June Snow for Western Wyoming Tonight

Snow level in Salt Range Monday afternoon

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
326 PM MDT Mon Jun 12 2017

...Late Season Accumulating Snow Expected for Western Wyoming
Late tonight and Tuesday...

.An unseasonably strong late Spring storm will produce significant
snowfall across the Western Wyoming Mountains late tonight and
into Tuesday. The low pressure center will be tracking northeast
across Yellowstone Park tonight. This low will be producing
numerous showers and thunderstorms this evening. Sharply colder
moisture laden air will be circulating around the back side of
this low as the low tracks northeast into Montana. This much
colder air will lower snow levels all the way down to the valley
floor at times by Tuesday morning. Snow amounts will likely range
anywhere from from 4 to 12 inches above 7500 feet along with some
isolated amounts of up to 14 inches in the Tetons by Tuesday
evening. 1 to 3 inches of snow is expected to accumulate in the
Western Wyoming Valleys by 12 noon Tuesday before melting off
Tuesday afternoon.


Star Valley-
Including the cities of Afton, Alpine, Star Valley Ranch,
and Thayne
326 PM MDT Mon Jun 12 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
NOON MDT TUESDAY...

The National Weather Service in Riverton has issued a Winter
Weather Advisory for the Star Valley, which is in effect from
midnight tonight to noon MDT Tuesday.

* TIMING...Numerous rain showers and thunderstorms will begin to
  mix with snow after midnight. The showers and thunderstorms will
  transition to more of a steady precipitation after midnight.
  Episodes of all snow will likely produce 1 to 3 inches of
  snowfall by 12 noon Tuesday. Mixed snow and rain will become
  mostly rain for the rest of Tuesday afternoon.

* SNOW TOTALS...1 to 3 inches with most of the snow in the
  northern portion of the valley.

* MAIN IMPACT...Highways will become slush covered late tonight
  and Tuesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter weather advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
and slick roads with limited visibilities. Slow down, and allow
extra time to reach your destination. Check the latest road
conditions at wyoroad.info or by dialing 5 1 1.