Hazardous Weather Outlook
Issued by NWS Riverton, WY

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FLUS45 KRIW 222048
HWORIW

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
247 PM MDT TUE APR 22 2014

WYZ001>020-022>030-231200-
ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST-
BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS-
EAST SWEETWATER COUNTY-FLAMING GORGE-
GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS-
NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN-
NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS-
ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES-
SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN-
SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY-
TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN-
WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST-
YELLOWSTONE NATIONAL PARK-
247 PM MDT TUE APR 22 2014

...SEVERE THUNDERSTORM WATCH FOR PARK...TETON AND LINCOLN COUNTIES
UNTIL 10 PM THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING.

.DAY ONE...TODAY AND TONIGHT

...STRONG TO POTENTIALLY SEVERE STORMS POSSIBLE IN THE NORTHWEST
THIS AFTERNOON...

INCREASING RAIN SHOWERS AND THUNDERSTORMS...MAINLY IN THE WEST. SOME
OF THE STRONGER CELLS COULD PRODUCE STRONG WIND GUSTS AND HAIL. A
COUPLE THUNDERSTORMS COULD BECOME VERY STRONG TO EVEN SEVERE IN THE
FAR WEST INCLUDING...THE STAR VALLEY...JACKSON AND NORTH TO
YELLOWSTONE NATIONAL PARK.

VERY WARM AND WINDY CONDITIONS WILL RESULT IN ELEVATED FIRE
DANGER IN THE CENTRAL AND SOUTH. ALSO MINOR TO MODERATE RISES ON
STREAMS COULD OCCUR LATE THIS AFTERNOON INTO TONIGHT IN THE MOUNTAIN
FOOTHILLS...BUT FLOODING IS NOT EXPECTED.

SNOW AND RAIN WILL INCREASE THIS EVENING AS A STRONG COLD FRONT
APPROACHES THE WEST AND RAPIDLY MOVES EAST OVERNIGHT...LEADING TO A
WIND SHIFT TO THE WEST AND SOME STRONG GUSTY WINDS WITH THE FRONT.
THERE COULD BE A FEW BURSTS OF HEAVY SNOW WITH THE FRONT AS WELL...
ESPECIALLY ACROSS THE HIGHER ELEVATION PASSES. TRAVEL OVER HIGH
MOUNTAIN PASSES COULD BE DIFFICULT OVERNIGHT WITH THIS SUDDEN CHANGE
IN CONDITIONS. THOSE WHO ARE STILL DEALING WITH CALVING MAY REQUIRE
EXTRA PROTECTION OVERNIGHT AS TEMPERATURES DIP...HUMIDITY AND PRECIP
CHANCES RISE AND WINDS REMAIN GUSTY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

WEDNESDAY AND WEDNESDAY NIGHT...SNOW ACCUMULATIONS POSSIBLE IN THE
NORTHERN AND WESTERN MOUNTAINS. STRONG DOWNSLOPE WINDS LIKELY ACROSS
CENTRAL AND SOUTHERN WYOMING DURING THE DAY WEDNESDAY.

SATURDAY AND SUNDAY...SIGNIFICANT MOUNTAIN SNOWFALL POSSIBLE.
ISOLATED THUNDERSTORMS ARE ALSO POSSIBLE SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT WIND GUSTS OVER 45 MPH...HAIL OF
ANY SIZE...HEAVY RAINFALL...OR ANY OTHER SIGNIFICANT WEATHER
PHENOMENA.

$$

TEAM RIVERTON



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