Tuesday, September 27, 2016

Final Summary of 3-day Rainfall

Slow-Moving Weather System Produces Widespread Heavy Rain
A slow-moving weather system produced impressive rainfall totals across western and central Wyoming between Wednesday night and Saturday night. Wednesday night saw heavy rain fall across the far western valleys and mountains, and from Sweetwater County north into Fremont County. Late Friday and Friday night saw widespread heavy rain, especially across northern Wyoming. The rain continued in these areas through early Saturday afternoon before tapering off by sunset Saturday. In addition to the heavy rain, colder temperatures in the mountains allowed for snow to fall. The heaviest snow fell in the Bighorn Range, where amounts ranged from 4 inches at 7800 feet to 15 inches near 9800 feet








72-hour Rainfall Reports from Wednesday night through Saturday
Location                             Rainfall
Lincoln County... 
 Afton...                          2.61 Inches.
 3 NW Etna...                      2.55 Inches.
 5 SSE Smoot...                    2.43 Inches.
 3 SE Bedford...                   2.34 Inches.
 5 NNE Thayne...                   2.04 Inches.
 Star Valley Ranch...              1.96 Inches.
 2 SE Thayne...                    1.74 Inches.
 15 NNE Cokeville...               1.40 Inches.
 3 E Freedom...                    1.29 Inches.
 21 NNW Kemmerer...                0.84 Inch.
 Kemmerer...                       0.73 Inch.
 Fossil Butte...                   0.67 Inch.
 5 SSE La Barge...                 0.43 Inch.
Big Horn County... 5 ENE Hyattville... 2.87 Inches. Greybull ASOS... 2.17 Inches. Greybull... 2.09 Inches. Basin... 1.99 Inches. Lovell... 1.91 Inches. 2 SSW Lovell... 1.75 Inches. 9 NNW Shell... 1.70 Inches. 11 SE Lovell... 1.55 Inches. 30 E Greybull... 1.38 Inches. Deaver... 0.81 Inch. Fremont County... Boysen Dam... 1.94 Inches. 3 NNE South Pass City... 1.93 Inches. Atlantic City... 1.77 Inches. Riverton NWS Office... 1.76 Inches. 2 S Riverton... 1.69 Inches. Riverton ASOS... 1.63 Inches. 2 W Riverton... 1.61 Inches. 2 W Riverton... 1.60 Inches. 8 W South Pass City... 1.57 Inches. Riverton... 1.49 Inches. 2 NNE Lander... 1.46 Inches. Boysen Reservoir... 1.39 Inches. 6 SW Lander... 1.30 Inches. 6 N Riverton... 1.26 Inches. 9 SSE Lander... 1.25 Inches. 9 SSE Lander... 1.24 Inches. 7 SW Muddy Gap... 1.21 Inches. 1 N Lander... 1.20 Inches. 3 NNW Hudson... 1.19 Inches. 11 W Crowheart... 1.18 Inches. 6 SW Lander... 1.17 Inches. Burris... 1.17 Inches. Lander... 1.12 to 1.14 Inches. Dubois... 1.12 Inches. 9 SW Lander... 1.11 Inches. Lander ASOS... 1.10 Inches. Jeffrey City... 1.07 Inches. Shoshoni... 1.00 Inches. 7 SE Lander... 0.99 Inch. 6 WNW Fort Washakie... 0.78 Inch. 10 WNW Dubois... 0.78 Inch. 6 NW Dubois... 0.77 Inch. 10 SE Crowheart... 0.68 Inch. 14 NW Riverton... 0.60 Inch. 14 NE Dubois... 0.55 Inch. 7 SE Lander... 0.45 Inch. Hot Springs County... 3 NE Thermopolis... 2.23 Inches. Thermopolis... 2.02 to 2.12 Inches. Kirby... 1.82 Inches. 29 W Thermopolis... 1.76 Inches. Johnson County... 7 WSW Buffalo... 3.07 Inches. 4 SSW Buffalo... 2.61 Inches. Buffalo... 2.58 Inches. 17 NNW Kaycee... 2.53 Inches. Buffalo ASOS... 2.27 Inches. 7 NW Mayoworth... 2.17 Inches. 7 SW Barnum... 2.11 Inches. 12 NW Buffalo... 2.11 Inches. 15 W Buffalo... 2.02 Inches. 18 NW Buffalo... 2.01 Inches. 10 SW Kaycee... 1.97 Inches. 7 NE Buffalo... 1.84 Inches. 18 E Ten Sleep... 1.72 Inches. 17 E Kaycee... 1.64 Inches. Sussex... 1.63 Inches. 18 WNW Buffalo... 1.44 Inches. 14 SW Kaycee... 1.43 Inches. Natrona County... 12 NE Lysite... 2.10 Inches. 5 SSW Casper... 1.55 Inches. Midwest... 1.32 Inches. Casper Mountain... 1.17 Inches. Powder River... 1.07 Inches. 10 WSW Casper... 0.98 Inch. 16 S Hiland... 0.79 Inch. 4 WSW Casper... 0.43 to 0.71 Inch. 11 WSW Casper... 0.68 Inch. Casper Mountain... 0.66 Inch. Casper ASOS... 0.64 Inch. 4 SW Casper... 0.63 Inch. 3 WSW Casper... 0.55 Inch. Independence Rock... 0.47 Inch. Pathfinder Dam... 0.42 Inch. Pathfinder Reservoir... 0.42 Inch. Park County... Cody... 1.42 to 1.52 Inches. 5 NE Cody... 1.52 Inches. 4 SE Cody... 1.50 Inches. 2 WSW Cody... 1.40 Inches. 5 ESE Cody... 1.33 Inches. 7 SW Cody... 1.13 Inches. 9 SW Powell... 1.10 Inches. 4 ENE Powell... 1.01 Inches. 3 E Wapiti... 0.90 Inch. Roosevelt Lodge YNP... 0.89 Inch. Powell... 0.89 Inch. 3 N Powell... 0.83 Inch. 4 SW Powell... 0.83 Inch. 26 SW Cody... 0.66 Inch. Pahaska... 0.50 Inch. 2 SSW Ralston... 0.50 Inch. 3 NE Sunshine... 0.33 Inch. 3 NE Clark... 0.33 Inch. 1 ENE Wapiti... 0.03 Inch. Sublette County... 15 WNW Daniel... 1.38 Inches. Bondurant... 1.04 to 1.10 Inches. Daniel Fish Hatchery... 0.99 Inch. 11 NNW Daniel... 0.88 Inch. 14 NW Pinedale... 0.73 Inch. Boulder Lake... 0.52 Inch. Big Piney ASOS... 0.49 Inch. Pinedale... 0.30 to 0.38 Inch. 7 SE Pinedale... 0.28 Inch. 13 NE Big Piney... 0.26 Inch. Sweetwater County... 15 SE Rock Springs... 2.01 Inches. Rock Springs... 1.83 to 1.95 Inches. Henry's Fork... 1.89 Inches. 4 NNW Rock Springs... 1.52 Inches. Green River... 1.17 to 1.36 Inches. 4 NE Bitter Creek... 1.35 Inches. 4 NE Bitter Creek... 1.35 Inches. Rock Springs ASOS... 1.23 Inches. Buckboard Marina... 0.81 Inch. Wamsutter... 0.68 Inch. 4 N Farson... 0.62 Inch. 5 N Farson... 0.61 Inch. Teton County... 1 NNW Alta... 2.70 Inches. Jackson Dam... 1.52 to 1.63 Inches. Jackson... 1.53 to 1.55 Inches. 5 NW Jackson... 1.46 Inches. 12 NE Jackson... 1.42 Inches. 2 NE Teton Village... 1.41 Inches. Moose... 1.30 Inches. Lake Village... 1.05 Inches. Washakie County... 2 SE Ten Sleep... 3.50 Inches. 5 NNW Ten Sleep... 3.05 Inches. 15 SSW Big Trails... 2.66 Inches. Ten Sleep... 2.60 Inches. 16 SSE Ten Sleep... 2.18 Inches. 12 ENE Ten Sleep... 2.07 Inches. 27 WSW Kaycee... 1.98 Inches. 12 S Worland... 1.94 Inches. 2 NE Worland... 1.90 Inches. 27 S Ten Sleep... 1.85 Inches. Worland ASOS... 1.78 Inches. Winchester... 1.70 Inches. 8 SW Worland... 1.61 Inches. Yellowstone National Park... Yellowstone South Entrance... 2.07 Inches. Snake River Ranger Station... 2.06 Inches. Old Faithful Ranger Station... 1.24 Inches. Lake Yellowstone ASOS... 1.14 Inches. Old Faithful... 1.13 Inches. Bechler River Ranger Station... 1.02 Inches. Tower Falls Ranger Station... 0.97 Inch. Yellowstone East Entrance... 0.76 Inch. 1 NNE Mammoth... 0.75 Inch

Sunday, September 25, 2016

Final Rainfall Totals for September 21-24 2016 Western and Central Wyoming

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
0538 AM MDT Sun Sep 25 2016


Below are the rainfall totals from Wednesday night through Saturday.
Please note that some locations will be updated later today to
accurately reflect Saturday`s total precipitation. Bouts of heavy
rain occurred Thursday evening across southwest/central Sweetwater
County north to South Pass and early Friday morning across central
Fremont County and western Natrona County. Steady...moderate rain
occurred over Johnson County and into the Big Horn Basin Saturday.
This also caused moderate to heavy snow to fall in the
Bighorns...with 4 inches falling around 7800 feet to 15 inches
falling near 9800 feet.

Location                             Rainfall

Lincoln County...
 3 NW Etna...                      2.55 Inches.
 Afton...                          2.52 Inches.
 5 SSE Smoot...                    2.43 Inches.
 3 SE Bedford...                   2.34 Inches.
 5 NNE Thayne...                   2.03 Inches.
 Star Valley Ranch...              1.89 Inches.
 2 SE Thayne...                    1.71 Inches.
 15 NNE Cokeville...               1.40 Inches.
 3 E Freedom...                    1.29 Inches.
 21 NNW Kemmerer...                0.84 Inch.
 Kemmerer...                       0.73 Inch.
 Fossil Butte...                   0.67 Inch.
 5 SSE La Barge...                 0.43 Inch.
Big Horn County... 5 ENE Hyattville... 2.87 Inches. Greybull ASOS... 2.17 Inches. Greybull... 1.85 Inches. Basin... 1.83 Inches. 2 SSW Lovell... 1.75 Inches. 9 NNW Shell... 1.70 Inches. Lovell... 1.60 Inches. 11 SE Lovell... 1.55 Inches. 30 E Greybull... 1.38 Inches. Deaver... 0.81 Inch. Fremont County... 3 NNE South Pass City... 1.93 Inches. Riverton Weather Office... 1.76 Inches. 2 S Riverton... 1.69 Inches. Riverton ASOS... 1.63 Inches. 2 W Riverton... 1.60 Inches. 8 W South Pass City... 1.57 Inches. Atlantic City... 1.56 Inches. Riverton... 1.49 Inches. Boysen Reservoir... 1.39 Inches. Boysen Dam... 1.36 Inches. 6 SW Lander... 1.30 Inches. 6 N Riverton... 1.26 Inches. 2 W Riverton... 1.25 Inches. 7 SW Muddy Gap... 1.21 Inches. 3 NNW Hudson... 1.19 Inches. 11 W Crowheart... 1.18 Inches. 9 SW Lander... 1.11 Inches. Lander ASOS... 1.10 Inches. Dubois... 1.10 Inches. Shoshoni... 1.00 Inches. 7 SE Lander... 0.99 Inch. Jeffrey City... 0.89 Inch. 2 NNE Lander... 0.89 Inch. Burris... 0.87 Inch. Lander... 0.56-0.81 Inch. 10 WNW Dubois... 0.78 Inch. 6 WNW Fort Washakie... 0.78 Inch. 6 NW Dubois... 0.77 Inch. 9 SSE Lander... 0.73 Inch. 6 SW Lander... 0.71 Inch. 9 SSE Lander... 0.70 Inch. 10 SE Crowheart... 0.68 Inch. 14 NW Riverton... 0.60 Inch. 1 N Lander... 0.60 Inch. 14 NE Dubois... 0.55 Inch. 7 SE Lander... 0.45 Inch. Hot Springs County... 29 W Thermopolis... 1.76 Inches. Kirby... 1.56 Inches. 3 NE Thermopolis... 1.54 Inches. Thermopolis... 0.67-1.35 Inches. Johnson County... 7 WSW Buffalo... 3.07 Inches. 17 NNW Kaycee... 2.31 Inches. Buffalo ASOS... 2.27 Inches. 7 NW Mayoworth... 2.17 Inches. 7 SW Barnum... 2.11 Inches. 12 NW Buffalo... 2.11 Inches. 4 SSW Buffalo... 2.10 Inches. 15 W Buffalo... 2.02 Inches. 18 NW Buffalo... 2.01 Inches. 10 SW Kaycee... 1.97 Inches. Buffalo... 1.97 Inches. 7 NE Buffalo... 1.84 Inches. 18 E Ten Sleep... 1.72 Inches. Sussex... 1.63 Inches. 18 WNW Buffalo... 1.44 Inches. 14 SW Kaycee... 1.43 Inches. 17 E Kaycee... 1.38 Inches. Kaycee... 0.53 Inch. Natrona County... 12 NE Lysite... 1.70 Inches. Midwest... 1.32 Inches. Casper Mountain... 1.17 Inches. 5 SSW Casper... 1.00 Inches. Powder River... 0.87 Inch. 10 WSW Casper... 0.81 Inch. 16 S Hiland... 0.79 Inch. Casper ASOS... 0.64 Inch. 4 SW Casper... 0.63 Inch. 11 WSW Casper... 0.57 Inch. 4 WSW Casper... 0.48 Inch. Independence Rock... 0.47 Inch. Casper... 0.11-0.43 Inch. Pathfinder Dam... 0.42 Inch. Pathfinder Reservoir... 0.42 Inch. 1 S Casper... 0.36 Inch. 3 WSW Casper... 0.36 Inch. Casper Mountain... 0.24 Inch. 1 SW Casper... 0.15 Inch. Park County... Cody... 1.05-1.43 Inches. 5 NE Cody... 1.38 Inches. 4 SE Cody... 1.22 Inches. 5 ESE Cody... 1.12 Inches. 9 SW Powell... 1.10 Inches. 2 WSW Cody... 1.10 Inches. 3 E Wapiti... 0.90 Inch. Roosevelt Lodge YNP... 0.89 Inch. 4 SW Powell... 0.83 Inch. 4 ENE Powell... 0.83 Inch. 7 SW Cody... 0.83 Inch. Powell... 0.81 Inch. 3 N Powell... 0.79 Inch. 26 SW Cody... 0.66 Inch. 2 SSW Ralston... 0.50 Inch. Pahaska... 0.41 Inch. 3 NE Sunshine... 0.33 Inch. 3 NE Clark... 0.33 Inch. Sublette County... 15 WNW Daniel... 1.38 Inches. Bondurant... 1.04-1.10 Inches. Daniel Fish Hatchery... 0.95 Inch. 11 NNW Daniel... 0.88 Inch. 14 NW Pinedale... 0.71 Inch. Boulder Lake... 0.52 Inch. Big Piney ASOS... 0.49 Inch. Pinedale... 0.30-0.38 Inch. 13 NE Big Piney... 0.26 Inch. 7 SE Pinedale... 0.26 Inch. Boulder Rearing Station... 0.06 Inch. Sweetwater County... 15 SE Rock Springs... 2.01 Inches. Rock Springs... 1.07-1.91 Inches. Henry`s Fork... 1.89 Inches. 4 NNW Rock Springs... 1.46 Inches. 4 NE Bitter Creek... 1.35 Inches. Rock Springs ASOS... 1.23 Inches. Green River... 1.05-1.21 Inches. Buckboard Marina... 0.81 Inch. Wamsutter... 0.68 Inch. 4 N Farson... 0.62 Inch. 5 N Farson... 0.51 Inch. Teton County... 1 NNW Alta... 2.70 Inches. Jackson Dam... 1.62 Inches. Jackson... 1.52-1.55 Inches. Jackson Lake Dam... 1.52 Inches. 5 NW Jackson... 1.46 Inches. 12 NE Jackson... 1.41 Inches. 2 NE Teton Village... 1.39 Inches. Moose... 1.30 Inches. Lake Village... 1.05 Inches. Washakie County... 2 SE Ten Sleep... 3.50 Inches. 15 SSW Big Trails... 2.66 Inches. 5 NNW Ten Sleep... 2.26 Inches. 12 ENE Ten Sleep... 2.07 Inches. 27 WSW Kaycee... 1.98 Inches. 12 S Worland... 1.94 Inches. Ten Sleep... 1.83 Inches. Worland ASOS... 1.78 Inches. 16 SSE Ten Sleep... 1.56 Inches. 2 NE Worland... 1.45 Inches. Winchester... 1.36 Inches. 8 SW Worland... 1.17 Inches. Worland... 0.88-1.00 Inches. 27 S Ten Sleep... 0.82 Inch. Yellowstone National Park... Yellowstone South Entrance... 2.07 Inches. Snake River Ranger Station... 2.02 Inches. Old Faithful Ranger Station... 1.23 Inches. Lake Yellowstone ASOS... 1.14 Inches. Old Faithful... 1.13 Inches. Bechler River Ranger Station... 1.02 Inches. Tower Falls Ranger Station... 0.97 Inch. 1 NNE Mammoth... 0.75 Inch. Yellowstone East Entrance... 0.74 Inch.

Saturday, September 24, 2016

Star Valley Storm Precipitation Totals

The three day storm has moved on east leaving substantial amounts of precipitation over a large part of the intermountain west. Locally in Star Valley rain turned to snow early this morning with the greatest report 3 inches just south of Smoot and about a half inch or so in upper reaches of Star Valley Ranch.  Following is the 3 day rainfall totals around Star Valley.

Afton                      2.43
5 SE Smoot            2.43
Star Valley Ranch  2.03
2 S Bedford            1.73
1.5 SE Thayne        1.71
Thayne                    1.42
Alpine                     1.42
Etna                         1.34

In the nearby mountains

Willow Creek Snotel    3.00
Cottonwood Snotel       2.40
Salt River Summit         2.00

Friday, September 23, 2016

Storm Rainfall Totals-Friday 8am


Public Information Statement
National Weather Service Riverton WY
618 AM MDT Fri Sep 23 2016

Here are some rainfall reports from Wednesday night
through 600 AM Friday morning across Western and Central
Wyoming.

Location                     Amount     Elevation (ft.)
...Star Valley...
1 NW Afton                   1.66 in    6211
3 NW Etna                    1.55 in    5676
Afton                        1.54 in    6267
Star Valley Ranch            1.31 in    6300   
1 S Bedford                  1.05 in    6279
1.5 SE Thayne                0.98 in    6000   
Etna                         0.91 in    5823
Thayne                       0.74 in    5928

...South Lincoln County...
Cokeville                    0.68 in    6191
Kemmerer                     0.54 in    6980

...Salt River and Wyoming Ranges...
Smiths Fork Near Border      0.96 in    6650
15 NE Cokeville              0.94 in    8470
21 W Big Piney               0.52 in    8200
...Yellowstone National Park... South Entrance Ynp 1.37 in 6900 Madison 1.26 in 6870 8 WSW Mammoth 1.25 in 8963 15 WSW Mammoth 1.10 in 7900 Extreme Sw Yellowstone 1.06 in 6400 Old Faithful 1.03 in 7320 Lake Village 0.84 in 7875 Lake Yellowstone 0.83 in 7835 14 S Sylvan Pass 0.80 in 8650 1 SW Canyon 0.79 in 7900 Mammoth 0.73 in 6300 Gardner River Nr Mammoth, Ye 0.71 in 5624 Tower Falls 0.54 in 6266 Hoyt Peak 0.52 in 9800 6 ENE Tower Junction 0.42 in 6700 ...Wind River Mountains West... 3 NNE South Pass City 1.63 in 8540 19 WSW Dubois 0.69 in 8833 Boulder Lake 0.07 in 7350 7 NE Pinedale 0.04 in 8530 Pine Creek Above Fremont Lak 0.02 in 7480 ...Wind River Mountains East... 9 SW Lander 0.64 in 7085 10 W Dubois 0.53 in 8432 10 W Fort Washakie 0.33 in 9235 ...Wind River Basin... Riverton Forecast Office 1.00 in 5576 Riverton Airport 0.90 in 5525 2 S Riverton 0.77 in 4901 Boysen Reservoir 0.75 in 4710 3 NNW Hudson 0.38 in 5555 10 SE Crowheart 0.21 in 5654 ...Upper Wind River Basin... 6 NW Dubois 0.57 in 7189 11 W Crowheart 0.48 in 6520 Crowheart 0.24 in 6099 ...Upper Green River Basin... Big Piney Airport 0.36 in 6975 5 SSE La Barge 0.33 in 6530 9 E Big Piney 0.01 in 6803 ...Upper Green River Basin Foothills... 2 NW Bondurant 1.08 in 6726 Bondurant 0.91 in 6650 Pinedale 0.07 in 7310 ...Teton and Gros Ventre Mountains... Alta 1.27 in 6430 17 N Alta 1.20 in 6830 5 ESE Hoback Junction 1.12 in 6210 Alta - Coop 0.50 in 6435 ...Southeast Johnson County... 10 SW Kaycee 0.82 in 4900 2 NW Mayoworth 0.67 in 5404 3 SSE Barnum 0.60 in 5075 17 E Kaycee 0.22 in 4362 Kaycee 0.06 in 4681 ...Southeast Big Horn Basin... Worland Airport 0.54 in 4245 10 SSE Worland 0.40 in 4520 ...South Lincoln County... Cokeville 0.68 in 6191 Kemmerer 0.54 in 6980 ...Salt River and Wyoming Ranges... Smiths Fork Near Border 0.96 in 6650 15 NE Cokeville 0.94 in 8470 21 W Big Piney 0.52 in 8200 ...Rock Springs and Green River... Green River 0.75 in 6060 Mckinnon 0.15 in 7086 ...Owl Creek and Bridger Mountains... 10 S Meeteetse 0.57 in 7127 ...Northeast Johnson County... 7 NE Buffalo 0.73 in 4370 Buffalo Airport 0.48 in 4970 8 S Story 0.32 in 5279 ...North Big Horn Basin... Greybull Airport 0.30 in 3934 Basin 0.27 in 3821 11 ESE Lovell 0.21 in 3660 ...Natrona County Lower Elevations... Casper Airport 0.27 in 5320 Midwest 0.25 in 4865 Casper - N Platte River 0.11 in 5100 ...Lander Foothills... Middle Fork Popo Agie River 0.56 in 6555 Lander Airport 0.36 in 5587 ...Jackson Hole... Jackson 1.23 in 6240 Snake River At Jackson Lake 1.07 in 6779 7 E Moran Jct 1.03 in 7251 4 N Moose 0.92 in 6730 4 SW Jackson 0.83 in 6073 Kelly 0.78 in 6653 Jackson Hole Airport 0.78 in 6445 ...Green Mountains and Rattlesnake Range... 7 SW Muddy Gap 0.75 in 7380 16 S Hiland 0.55 in 6380 Independence Rock 0.19 in 5920 Pathfinder Reservoir 0.18 in 5858 ...Flaming Gorge... 3 NE Manila Ut 1.57 in 6060 ...East Sweetwater County... 15 SE Rock Springs 1.85 in 7550 4 NE Bitter Creek 1.21 in 6720 Rock Springs Airport 1.19 in 6760 ...Cody Foothills... 20 SW Cody 0.07 in 5843 3 SW Ralston 0.06 in 4575 3 E Wapiti 0.04 in 5400 ...Casper Mountain... 8 S Casper 0.19 in 7740 ...Bighorn Mountains West... 12 ENE Ten Sleep 0.98 in 8202 15 SSW Big Trails 0.94 in 6554 30 E Greybull 0.64 in 8898 5 ENE Hyattville 0.42 in 5670 ...Bighorn Mountains Southeast... 7 NW Mayoworth 0.88 in 5720 7 SW Barnum 0.70 in 6440 7 WSW Buffalo 0.69 in 5745 20 NW Mayoworth 0.66 in 8180 16 SE Big Trails 0.63 in 7220 14 W Buffalo 0.52 in 8400 18 NW Buffalo 0.52 in 8604 18 WNW Buffalo 0.48 in 8580 ...Absaroka Mountains... 10 N Dubois 0.49 in 8085 Pahaska 0.18 in 6800 10 WNW Cody 0.16 in 8401 NE Entrance Yellowstone 0.15 in 7360 3 E Pahaska 0.13 in 7500 19 SSW Wapiti 0.05 in 6200 Crandall 0.04 in 6640 Observations are collected from a variety of sources with varying equipment and exposures. Not all data listed are considered official.

Wednesday, September 21, 2016

Flash Flooding Possible in the Mountains Thursday

FLOOD WATCH
NATIONAL WEATHER SERVICE RIVERTON WY
1232 PM MDT WED SEP 21 2016

...SIGNIFICANT RAINFALL IS EXPECTED OVER THE WESTERN MOUNTAINS
THURSDAY AFTERNOON THROUGH THURSDAY NIGHT WHICH MAY LEAD TO SOME
FLASH FLOODING OR MUD SLIDES...

.A LARGE UPPER LEVEL LOW WILL MOVE SLOWLY EAST TOWARDS WYOMING
THURSDAY INTO THURSDAY NIGHT. A VERY MOIST AIRMASS WILL BE DRAWN
NORTHWARD AHEAD OF THIS STORM SYSTEM WHICH WILL INCREASE THE POTENTIAL
FOR SIGNIFICANT RAINFALL IN THE WESTERN MOUNTAINS THURSDAY INTO
THURSDAY NIGHT. EVEN THE LOWER ELEVATIONS WEST OF THE CONTINENTAL DIVIDE
WILL HAVE THE POTENTIAL FOR SIGNIFICANT RAINFALL. RECENT FIRE BURN
SCARS WILL BE ESPECIALLY SUSCEPTIBLE TO FLASH FLOODING.


YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-
TETON AND GROS VENTRE MOUNTAINS-WIND RIVER MOUNTAINS WEST-
WIND RIVER MOUNTAINS EAST-SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL
1232 PM MDT WED SEP 21 2016

...FLASH FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
LATE THURSDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL AND WESTERN
  WYOMING...INCLUDING THE FOLLOWING AREAS...WIND RIVER
  MOUNTAINS...ABSAROKA MOUNTAINS...TETON AND GROS VENTRE
  MOUNTAINS...YELLOWSTONE NATIONAL PARK AND THE SALT RIVER AND
  WYOMING RANGES.

* FROM THURSDAY AFTERNOON THROUGH LATE THURSDAY NIGHT

* ONE TO TWO INCHES OF RAIN WITH LOCALLY HIGHER AMOUNTS ARE
  POSSIBLE ACROSS ALL OF THE WESTERN MOUNTAINS.

* SIGNIFICANT RAINFALL ON RECENT BURN SCARS WILL BE HIGHLY
  SUSCEPTIBLE TO FLASH FLOODING BUT OTHER AREAS WILL ALSO HAVE
  THE POTENTIAL TO FLOOD IF HEAVY RAIN PERSISTS OVER ONE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

HUNTERS HEADING TO THE BACKCOUNTRY NEED TO BE PREPARED FOR MUCH
WETTER AND COOLER CONDITIONS.

Thursday, September 15, 2016

Much Needed Rain Across Star Valley

The weather system currently exiting Wyoming has provided much need precipitation  to  Star Valley.  After 3 summer  months of generally less than 2 inches the past 3 days has seen anywhere from 1/2 to 1.5 inches of rain all of Star Valley.  Following is a list of measured rainfall across the valley.

1.5 SE Thayne        1.46

Star Valley Ranch   1.30

5 SSE Smoot             .97

7 S Alpine                 .96

Afton                         .85

Alpine Airport           .61

Saturday, September 10, 2016

Tin Cup Fire /Critical Fire Weather Conditions this Weekend

The Tin Cup Fire which was initiated the end of August due to a lightning strike has shown an increase in coverage the last several days.  Following are the observed smoke from the fire from the Star Valley Ranch Cam at 4pm each day.

4pm 9/10/16

4pm 9/9/16
4pm 9/7/16

4pm 9/6/16

The video from the Star Valley Ranch cam for Saturday 9/10/16 dramatically shows the increase activity as the winds and temperatures rise during the day.

video


Much stronger winds along with very low humidities  on Sunday are expected prompting the Weather Forecast Offices at both Pocatello and Riverton to forecast  Critical Fire Weather conditions through Sunday evening.


NATIONAL WEATHER SERVICE RIVERTON WY
205 PM MDT SAT SEP 10 2016

...CRITICAL FIRE WEATHER CONDITIONS THIS WEEKEND...

.A DRY WEST FLOW ALOFT WILL INCREASE OVER WESTERN AND CENTRAL
WYOMING TODAY. THIS PATTERN WILL BRING DRY WARM AND WINDY
CONDITIONS ACROSS THE AREA...WITH CRITICAL FIRE BEHAVIOR EXPECTED
THIS AFTERNOON. AFTER AN OVERNIGHT LULL...CONDITIONS WILL REPEAT
ON SUNDAY. ADDITIONAL LOCATIONS IN CENTRAL AND NORTHERN WYOMING
WILL SEE THE THREAT FOR CRITICAL FIRE CONDITIONS SUNDAY AFTERNOON
AND EVENING...WARRANTING THE ISSUANCE OF THE FIRE WEATHER WATCH
FOR ADDITIONAL AREAS NOT ALREADY COVERED BY THE RED FLAG WARNING.

WYZ278-414-110900-
/O.CON.KRIW.FW.W.0029.000000T0000Z-160912T0300Z/
UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM-
SALT AND WYOMING RANGES/WEST ZONE BRIDGER TETON NF-
205 PM MDT SAT SEP 10 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SUNDAY FOR
VERY LOW HUMIDITY WARM TEMPERATURES AND GUSTY WIND FOR FIRE
WEATHER ZONES 278 AND 414...

* WIND...WEST TO SOUTHWEST 12 TO 18 WITH GUSTS TO 25 MPH THIS
  AFTERNOON. WIND GUSTS UP TO AROUND 30 MPH EXPECTED ON SUNDAY
  AFTERNOON.

* HUMIDITY...10 TO 15 PERCENT DURING THE AFTERNOON HOURS.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

Update on Tin Cup Fire

Lincoln County Sheriff's Office, WY EIIFC FIRE UPDATE - Increased Fire Activity on Tin Cup Fire
Idaho Falls, ID – Fire activity has increased on the Tin Cup Fire located approximately eight miles northwest of Freedom, Wyoming on the Soda Springs Ranger District. The lightning-caused fire was reported August 29, 2016 and is highly visible from Highway 34. Forest Officials ask individuals refrain from calling dispatch to report this wildfire.

Following is the video of the associated smoke from the fire on Friday viewed from the cam at Star Valley Ranch
video


Tin Cup Fire

The fire is burning along the ridgeline between Jack Knife Creek and Marshall Canyon, spreading slowly to the southeast. A local Type 3 Incident Management Team is carefully monitoring this fire and preparing fuels in case a more aggressive suppression strategy is needed. The Caribou-Targhee National Forest (CTNF) is allowing this fire to play its historic role in the forest ecosystem. Wildfires provide a natural disturbance event that encourages and supports aspen rejuvenation. Aspen stand are a vital and necessary component for healthy wildlife habitat.
This does not mean the fire is burning without human intervention; rather, fire resources are available to take action on fire spread at predetermined management action points. As the fire shows more or less activity, the staffing on the incident will grow or shrink accordingly. Advanced modeling programs are used to predict fire spread and the probability of that outcome. Firefighters use these models to determine where pre-treatment would be most beneficial and effective.
Tin Cup Fire
Engines and handcrews are hard at work conducting fuels abatement work along power lines located near the bottom of the drainage and near the Highway. Crews are wrapping poles with a fire protective wrap and assessing private properties near the fire area. Reducing fuels will decrease fire spread and intensity should the fire progress that direction. In addition to firefighters patrolling the vicinity to monitor fire behavior, a remote camera was placed on a ridge overlooking the fire area. The camera allows fire managers to monitor fire activity at any time during daylight hours and monitor its progress.
The Tin Cup Fire is likely to burn until a major precipitation event occurs or until it snows. CTNF has posted a caution to forest visitors on Forest Trail #463, Marshall Canyon. Fire managers urge individuals to use caution and stay out of the area due to fire hazards.

Tuesday, September 6, 2016

Growing Season Ends Western Wyoming

Widespread freezing temperatures were observed across Western Wyoming at sunrise effectively ending the 2016 growing season.
Attemping to protect crops at the Robinson's Farm in Bedford

Sunrise over Afton WY September 6, 2016


Not surprisingly the coldest was in the Bondurant area with a frigid  15.

Observed minimums Sept 6 2016

Monday, September 5, 2016

Finally Some Precipitation in Western Wyoming



The first precipitation in most areas of Western Wyoming in over two weeks.

Some snow in higher elevations of Yellowstone NP

View from Mt Washburn in YNP Monday Afternoon


PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
0702 PM MDT MON SEP 05 2016

...Rainfall Reports through Labor Day morning...

Here are rainfall reports from Friday through Monday morning.


LOCATION                             RAINFALL
LINCOLN COUNTY... 
 5 SSE LA BARGE...                 0.41 INCH.
 5 SSE SMOOT...                    0.20 INCH.
 15 NE COKEVILLE...                0.15 INCH.
 AFTON...                          0.14 INCH.
 3 SE BEDFORD...                   0.13 INCH.
 KEMMERER...                       0.12 INCH.
 3 NW ETNA...                      0.11 INCH.
 15 NNE COKEVILLE...               0.10 INCH.
 2 SE THAYNE...                    0.06 INCH.
 STAR VALLEY RANCH...              0.05 INCH.
 5 NNE THAYNE...                   0.04 INCH.
BIG HORN COUNTY... 30 E GREYBULL... 0.71 INCH. 9 NNW SHELL... 0.60 INCH. 11 SE LOVELL... 0.44 INCH. GREYBULL... 0.27 INCH. GREYBULL AIRPORT... 0.24 INCH. 2 SSW LOVELL... 0.20 INCH. LOVELL... 0.06 INCH. FREMONT COUNTY... JEFFREY CITY... 0.69 INCH. DUBOIS... 0.64 INCH. 11 W CROWHEART... 0.58 INCH. 10 WNW DUBOIS... 0.53 INCH. 6 NW DUBOIS... 0.48 INCH. BURRIS... 0.43 INCH. 6 WNW FORT WASHAKIE... 0.43 INCH. 19 WSW DUBOIS... 0.39 INCH. 7 WNW LANDER... 0.23 INCH. ATLANTIC CITY... 0.22 INCH. 6 SW LANDER... 0.21 INCH. 9 SSE LANDER... 0.18 INCH. 3 NNE SOUTH PASS CITY... 0.18 INCH. 9 SSE LANDER... 0.16 INCH. 10 SE CROWHEART... 0.16 INCH. 7 SW MUDDY GAP... 0.15 INCH. LANDER... 0.10-0.15 INCH. HUDSON... 0.14 INCH. LANDER AIRPORT... 0.12 INCH. 6 SW LANDER... 0.12 INCH. 9 SW LANDER... 0.08 INCH. 3 NNW HUDSON... 0.07 INCH. BOYSEN DAM... 0.06 INCH. RIVERTON AIRPORT... 0.04 INCH. 2 S RIVERTON... 0.04 INCH. BOYSEN RESERVOIR... 0.02 INCH. HOT SPRINGS COUNTY... 10 S MEETEETSE... 0.44 INCH. THERMOPOLIS... 0.38 INCH. 3 NE THERMOPOLIS... 0.37 INCH. 9 NE THERMOPOLIS... 0.31 INCH. JOHNSON COUNTY... 7 WSW BUFFALO... 0.72 INCH. BUFFALO... 0.56 INCH. 18 E TEN SLEEP... 0.55 INCH. 15 W BUFFALO... 0.54 INCH. 4 SSW BUFFALO... 0.50 INCH. 18 NW BUFFALO... 0.49 INCH. 7 SW BARNUM... 0.47 INCH. SUSSEX... 0.47 INCH. 10 SW KAYCEE... 0.42 INCH. 17 NNW KAYCEE... 0.39 INCH. 14 SW KAYCEE... 0.32 INCH. 17 E KAYCEE... 0.30 INCH. 7 NW MAYOWORTH... 0.27 INCH. 12 NW BUFFALO... 0.27 INCH. BUFFALO AIRPORT... 0.26 INCH. NATRONA COUNTY... CASPER MOUNTAIN... 0.75 INCH. 10 WSW CASPER... 0.64 INCH. CASPER... 0.40-0.60 INCH. 4 WSW CASPER... 0.47 INCH. CASPER AIRPORT... 0.45 INCH. 16 S HILAND... 0.38 INCH. 4 SW CASPER... 0.36 INCH. 11 WSW CASPER... 0.32 INCH. 5 SSW CASPER... 0.32 INCH. POWDER RIVER... 0.29 INCH. INDEPENDENCE ROCK... 0.28 INCH. PATHFINDER RESERVOIR... 0.11 INCH. PARK COUNTY... 3 NE SUNSHINE... 0.44 INCH. PAHASKA... 0.36 INCH. 26 SW CODY... 0.31 INCH. 12 SE CODY... 0.30 INCH. CRANDALL... 0.28 INCH. 3 E WAPITI... 0.28 INCH. 10 WNW CODY... 0.27 INCH. CODY... 0.15-0.25 INCH. 19 SSW WAPITI... 0.20 INCH. 9 SW POWELL... 0.20 INCH. POWELL... 0.18 INCH. 7 SW CODY... 0.16 INCH. 4 ENE POWELL... 0.16 INCH. 3 NE CLARK... 0.15 INCH. ROOSEVELT LODGE YNP... 0.11 INCH. 5 ESE CODY... 0.11 INCH. SUBLETTE COUNTY... PINEDALE... 0.25-0.50 INCH. BIG PINEY AIRPORT... 0.19 INCH. 7 SE PINEDALE... 0.19 INCH. BOULDER LAKE... 0.15 INCH. 12 NNE PINEDALE... 0.14 INCH. DANIEL FISH HATCHERY... 0.10 INCH. BONDURANT... 0.09 INCH. 21 W BIG PINEY... 0.07 INCH. BOULDER REARING STATION... 0.05 INCH. SWEETWATER COUNTY... 4 NNW ROCK SPRINGS... 0.27 INCH. HENRY'S FORK... 0.23 INCH. GREEN RIVER... 0.10-0.20 INCH. ROCK SPRINGS... 0.09-0.13 INCH. 15 SE ROCK SPRINGS... 0.12 INCH. 4 NE BITTER CREEK... 0.12 INCH. 5 N FARSON... 0.11 INCH. ROCK SPRINGS AIRPORT... 0.08 INCH. 4 N FARSON... 0.08 INCH. BUCKBOARD MARINA... 0.06 INCH. 7 SE ROCK SPRINGS... 0.04 INCH. 3 NNE FONTENELLE... 0.02 INCH. TETON COUNTY... JACKSON DAM... 0.36 INCH. 7 E MORAN JCT... 0.34 INCH. JACKSON LAKE DAM... 0.30 INCH. LAKE VILLAGE... 0.26 INCH. 4 W SOUTH ENTRANCE YNP... 0.20 INCH. 17 N ALTA... 0.19 INCH. 2 NE TETON VILLAGE... 0.16 INCH. JACKSON... 0.05-0.13 INCH. 5 NW JACKSON... 0.09 INCH. 12 NE JACKSON... 0.08 INCH. MOOSE... 0.05 INCH. WASHAKIE COUNTY... TEN SLEEP... 0.65 INCH. 5 NNW TEN SLEEP... 0.42 INCH. WINCHESTER... 0.31 INCH. 2 NE WORLAND... 0.30 INCH. 8 SW WORLAND... 0.30 INCH. 16 SSE TEN SLEEP... 0.30 INCH. 27 S TEN SLEEP... 0.19 INCH. 15 SSW BIG TRAILS... 0.15 INCH. 27 WSW KAYCEE... 0.01 INCH. YELLOWSTONE NATIONAL PARK... YELLOWSTONE NE ENTRANCE... 0.76 INCH. LAMAR RANGER STATION... 0.48 INCH. YELLOWSTONE EAST ENTRANCE... 0.45 INCH. 15 WSW MAMMOTH... 0.32 INCH. YELLOWSTONE SOUTH ENTRANCE... 0.30 INCH. MAMMOTH... 0.29 INCH. 14 S SYLVAN PASS... 0.24 INCH. LAKE YELLOWSTONE... 0.21 INCH. EXTREME SW YELLOWSTONE... 0.18 INCH. 1 SW CANYON... 0.15 INCH. TOWER FALLS RANGER STATION... 0.15 INCH. 1 NNE MAMMOTH... 0.14 INCH. SNAKE RIVER RANGER STATION... 0.13 INCH. OLD FAITHFUL... 0.09 INCH.

Thursday, September 1, 2016

Dry Summer in Star Valley

As all who live in Star Valley know the 3 summer months (June-Aug) of 2016 were dry. The one long term climate station n the valley is Bedford 3SE.  Following is a graphic for Bedford with average monthly precipitation.


Compare this with the daily precipitation reported  at http://www.cocorahs.org at sites near Star Valley Ranch, Thayne and Smoot.  As can be seen it generally was about half what would normally be expected for those  3 months.  July and August are typically the two driest of the year, with  this year being particularly dry.



Stations:
WY-LN-17
Thayne 4.7 NNE
Lat: 42.976495
Lon: -110.949658 
WY-LN-18
Thayne 1.5 SE
Lat: 42.9019251
Lon: -110.9847486 
WY-LN-2
Smoot 4.9 SSE
Lat: 42.5519166
Lon: -110.8884333 
* indicates Multi-Day Accumulation Report
Station        WY-LN-17 WY-LN-18 WY-LN-2
DatePrecip in.  Precip in.  Precip in.
06/01/20160.00  0.00  0.00
06/02/20160.00  0.00  0.00
06/03/20160.00  0.00  0.00
06/04/20160.00  0.00  0.00
06/05/20160.00  0.00  0.00
06/06/20160.00  0.00  0.00
06/07/20160.05  0.00  0.00
06/08/2016T  0.02  0.02
06/09/20160.00  0.00  0.00
06/10/20160.00  0.00  0.00
06/11/20160.00  0.00  0.00
06/12/20160.05  0.03  0.04
06/13/20160.03  0.09  0.07
06/14/20160.41  0.50  0.23
06/15/20160.05  0.05  0.06
06/16/20160.00  0.00  0.00
06/17/20160.00  0.00  0.00
06/18/20160.00  0.00  0.00
06/19/20160.00  0.00  0.00
06/20/20160.00  0.00  0.00
06/21/20160.00  0.00  0.00
06/22/20160.00  0.00  0.00
06/23/20160.00  0.00  0.00
06/24/20160.00  0.00  0.00
06/25/20160.00  --  0.00
06/26/20160.00  0.00  0.00
06/27/20160.00  --  0.00
06/28/20160.00  0.00  0.00
06/29/2016T  0.00  0.00
06/30/20160.00  0.00  0.00
07/01/20160.43  0.16  0.00
07/02/2016T  0.00  0.13
07/03/20160.00  0.00  0.00
07/04/20160.01  0.06  0.03
07/05/2016T  0.04  0.03
07/06/20160.00  --  0.00
07/07/20160.00  0.00  0.00
07/08/20160.00  --  0.00
07/09/20160.00  --  0.00
07/10/20160.00  --  0.00
07/11/20160.47  0.61  0.07
07/12/2016T  0.00  0.00
07/13/20160.00  0.00  0.00
07/14/20160.00  0.00  0.00
07/15/20160.00  0.00  0.00
07/16/20160.00  0.00  0.00
07/17/20160.00  0.00  0.00
07/18/20160.00  0.00  0.00
07/19/20160.00  --  0.00
07/20/20160.00  0.00  0.00
07/21/20160.00  0.00  0.00
07/22/20160.00  0.00  0.00
07/23/20160.12  0.12  0.00
07/24/20160.00  0.00  0.00
07/25/20160.00  0.00  0.00
07/26/20160.00  0.00  0.00
07/27/20160.00  0.00  0.00
07/28/20160.00  0.00  0.00
07/29/20160.00  0.00  0.00
07/30/20160.00  0.00  0.00
07/31/2016T  T  0.02
08/01/2016T  0.03  0.04
08/02/20160.00  0.00  0.00
08/03/2016T  T  0.04
08/04/20160.00  0.00  0.00
08/05/20160.00  0.00  0.00
08/06/20160.08  0.04  0.00
08/07/2016T  0.02  0.04
08/08/20160.22  0.18  0.14
08/09/20160.00  0.00  0.00
08/10/20160.00  0.00  0.00
08/11/2016T  0.00  0.00
08/12/20160.00  0.00  0.00
08/13/20160.00  0.00  0.00
08/14/20160.00  --  0.00
08/15/20160.00  0.00  0.00
08/16/2016T  0.02  0.00
08/17/2016T  0.00  0.00
08/18/2016T  T  0.14
08/19/20160.00  0.12  0.03
08/20/20160.00  0.00  0.00
08/21/20160.00  0.00  0.00
08/22/20160.00  0.00  0.00
08/23/20160.00  0.00  0.00
08/24/20160.00  0.00  0.00
08/25/20160.00  0.00  0.00
08/26/20160.03  T  0.13
08/27/20160.00  0.00  0.04
08/28/20160.00  0.00  0.00
08/29/20160.00  0.00  0.00
08/30/20160.00  0.00  0.00
08/31/20160.00  0.00  0.00
09/01/20160.00  0.00  0.00
Totals :1.95 in.  2.09 in.  1.30 in.