NOAA has issued a Flood Watch for Western Wyoming, including the Jackson Hole Area. Avalanche Warnings have also been issued and these are in effect until early Friday morning.
Heavy rain, high avalanche dangers, possible flooding, and heavy snow are all impacting Jackson Hole.
Snow levels are expected to rise throughout the day Thursday, giving way to precipitation that is going to fall in the form of rain. This rain will eat away at the snowpack and increase the risk of avalanches.
More Storm Information:
Jackson Hole: 1+” of Rain With Heavy Snowfall In The Morning
* Summary...Significant rainfall combined with melting snow may cause localized flooding in portions of the Jackson and Star Valleys through tonight. - NOAA Riverton, WY
Avalanche Warning For Jackson Hole:
WYZ012>014-023-024-100800- TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- WIND RIVER MOUNTAINS WEST-STAR VALLEY- SALT RIVER AND WYOMING RANGES- BULLETIN - EAS ACTIVATION REQUESTED AVALANCHE WARNING BRIDGER-TETON NATIONAL FOREST AVALANCHE CENTER RELAYED BY NATIONAL WEATHER SERVICE RIVERTON WY 615 PM MST WED FEB 8 2017 TIMING...1 AM ON FEBRUARY 9TH THROUGH 1 AM ON FEBRUARY 10TH. AFFECTED AREA...TETON, SNAKE RIVER, GROS VENTRE, WIND RIVER, WYOMING, AND SALT RIVER RANGES. THIS ALSO INCLUDES JACKSON HOLE AND STAR VALLEY. AVALANCHE DANGER...THE AVALANCHE DANGER WILL BE HIGH FOR THE AFFECTED AREA. REASONS AND IMPACTS...FORECAST HEAVY SNOW, AND RAIN THAT COULD RISE TO 8000 FEET, WILL CREATE WIDESPREAD AREAS OF UNSTABLE SNOW. NATURAL AVALANCHES ARE LIKELY AT ALL ELEVATIONS, COULD RUN LONG DISTANCES AND IMPACT ROADWAYS. DANGEROUS ROOF SLIDES ARE CERTAIN. PRECAUTIONARY / PREPAREDNESS...TRAVEL IN OR UNDER AVALANCHE TERRAIN IS NOT RECOMMENDED.
Flood Watch For Jackson Hole:
Flood Watch National Weather Service Riverton WY 1210 PM MST Thu Feb 9 2017 ...RAIN MAY BRING SOME FLOODING TO THE JACKSON AND STAR VALLEYS THROUGH TONIGHT... .A warm Pacific system will bring widespread rain to the area through tonight. The rain will change to snow by Friday morning though with heavy snow possible on Friday. Jackson Hole-Star Valley- Including the cities of Jackson, Afton, Alpine, Star Valley Ranch, and Thayne 1210 PM MST Thu Feb 9 2017 ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flood Watch continues for * Location...Portions of northwest Wyoming and west central Wyoming, including the following areas, in northwest Wyoming, Jackson Hole. In west central Wyoming, Star Valley. * Timing...Through late tonight * Summary...Significant rainfall combined with melting snow may cause localized flooding in portions of the Jackson and Star Valleys through tonight. Colder air will arrive quickly by sunrise Friday morning and will likely change all areas over to a heavy wet snow.
The warmer temperatures and rain will loosen up snow that is currently on homes. Watch out for Roof Avalanches!