Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 131205
SPSRIW

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
604 AM MDT MON APR 13 2015

WYZ013-023-025-026-132200-
JACKSON HOLE-STAR VALLEY-UPPER GREEN RIVER BASIN-
UPPER GREEN RIVER BASIN FOOTHILLS-
604 AM MDT MON APR 13 2015

AFTER A WARM AND WINDY DAY ON TUESDAY...A STORM SYSTEM WILL MOVE
QUICKLY IN LATE IN THE DAY TUESDAY WITH RAIN CHANGING TO SNOW ACROSS
THE AREA BY EVENING. MOST AREAS WILL SEE A QUICK 1 TO 2 INCHES OF
SNOW TUESDAY NIGHT ALONG WITH AREAS OF STRONG WIND AND BLOWING SNOW.
ISOLATED THUNDERSTORMS WILL ACCOMPANY THE INITIAL COLD FRONT LATE
TUESDAY.

$$

WYZ027>030-132200-
EAST SWEETWATER COUNTY-FLAMING GORGE-ROCK SPRINGS AND GREEN RIVER-
SOUTH LINCOLN COUNTY-
604 AM MDT MON APR 13 2015

AFTER A WARM AND VERY WINDY DAY ON TUESDAY...A STORM SYSTEM WILL MOVE
QUICKLY IN LATE IN THE DAY TUESDAY INTO TUESDAY EVENING WITH RAIN
CHANGING TO SNOW ACROSS THE AREA. MOST AREAS WILL SEE A QUICK 1 TO 2
INCHES TUESDAY NIGHT ALONG WITH AREAS OF STRONG WIND AND BLOWING
SNOW. AFTER POTENTIAL HIGH WINDS DURING THE DAY TUESDAY...STRONG
WINDS MAY PERSIST THROUGH THE NIGHT WHICH WHEN COMBINED WITH
OCCASIONAL SNOW SHOWERS MAY HAMPER TRAVEL. SNOW MAY CONTINUE INTO
WEDNESDAY AS WINDS TURN TO THE NORTHEAST. STAY TUNED FOR THE LATEST
FORECAST ON THIS UPCOMING CHANGE.

$$

WYZ010-011-132200-
NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
604 AM MDT MON APR 13 2015

AFTER A WARM AND WINDY TUESDAY...A STRONG COLD FRONT WILL USHER IN
SHARPLY COLDER WEATHER AND SNOW LATE TUESDAY NIGHT THROUGH
WEDNESDAY. SNOWFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE ALONG
WITH A NORTH WIND OF 25 TO 35 MPH WITH GUSTS OF 50 MPH. STAY TUNED
FOR THE LATEST FORECAST ON THIS DRAMATIC CHANGE BACK TO SNOW...WIND
AND COLD LATE TUESDAY NIGHT THROUGH WEDNESDAY.

$$

WYZ001-002-007-012-014-024-132200-
ABSAROKA MOUNTAINS-OWL CREEK AND BRIDGER MOUNTAINS-
SALT RIVER AND WYOMING RANGES-TETON AND GROS VENTRE MOUNTAINS-
WIND RIVER MOUNTAINS WEST-YELLOWSTONE NATIONAL PARK-
604 AM MDT MON APR 13 2015

A DEVELOPING STORM SYSTEM WILL MOVE INTO THE MOUNTAINS AS EARLY AS
TUESDAY AFTERNOON IN THE FAR WEST AND TUESDAY NIGHT ALONG THE
CONTINENTAL DIVIDE. AFTER A RELATIVELY MILD AND WINDY TUESDAY...
TEMPERATURES WILL PLUMMET AND SNOWFALL WILL DEVELOP. THE COMBINATION
OF SNOW...WIND AND SHARPLY COLDER CONDITIONS WILL CAUSE POTENTIAL
PROBLEMS FOR THOSE CAUGHT UNPREPARED. EARLY INDICATIONS POINT TO
GENERAL SNOWFALL OF 4 TO 6 INCHES WITH LOCALLY HIGHER AMOUNTS.
PLEASE STAY ABREAST OF THE LATEST WEATHER FORECAST AND PREPARE NOW
FOR THE SHARP CHANGE BACK TO COLD AND SNOW IN THE MOUNTAINS BY
TUESDAY NIGHT AND CONTINUING THROUGH WEDNESDAY.

$$

WYZ015>020-022-132200-
CASPER MOUNTAIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE-
LANDER FOOTHILLS-NATRONA COUNTY LOWER ELEVATIONS-
UPPER WIND RIVER BASIN-WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-
604 AM MDT MON APR 13 2015

AFTER A WARM AND WINDY TUESDAY...A STRONG STORM SYSTEM WILL USHER IN
SHARPLY COLDER WEATHER...WINDY AND SNOWY WEATHER TUESDAY NIGHT INTO
WEDNESDAY. UNCERTAINTY REMAINS ON EXACT SNOWFALL AMOUNTS AND
LOCATION OF THE BEST SNOW BUT MANY AREAS WILL SEE AT LEAST 1 TO 2
INCHES OF SNOW WITH MORE POSSIBLE IN THE UPSLOPE FAVORED LOCATIONS
ALONG THE LANDER FOOTHILLS AND NEAR CASPER MOUNTAIN. STAY TUNED FOR
THE LATEST FORECAST ON THIS DRAMATIC CHANGE BACK TO SNOW...WIND AND
COLD LATE TUESDAY NIGHT AND WEDNESDAY.

$$

WYZ008-009-132200-
BIGHORN MOUNTAINS SOUTHEAST-BIGHORN MOUNTAINS WEST-
604 AM MDT MON APR 13 2015

A DEVELOPING STORM SYSTEM WILL MOVE INTO THE BIGHORN MOUNTAINS AS
EARLY AS TUESDAY EVENING AND CONTINUE THROUGH WEDNESDAY. AFTER A
RELATIVELY MILD AND WINDY TUESDAY...TEMPERATURES WILL PLUMMET AND
SNOWFALL WILL DEVELOP. THE COMBINATION OF SNOW...WIND AND SHARPLY
COLDER CONDITIONS WILL CAUSE POTENTIAL PROBLEMS FOR THOSE CAUGHT
UNPREPARED. EARLY INDICATIONS POINT TO GENERAL SNOWFALL OF 5 TO 10
INCHES WITH LOCALLY HIGHER AMOUNTS. PLEASE STAY ABREAST OF THE LATEST
WEATHER FORECAST AND PREPARE NOW FOR THE SHARP CHANGE BACK TO COLD
AND SNOW IN THE BIGHORN MOUNTAINS TUESDAY NIGHT AND WEDNESDAY.

$$

WYZ003>006-132200-
CODY FOOTHILLS-NORTH BIG HORN BASIN-SOUTHEAST BIG HORN BASIN-
SOUTHWEST BIG HORN BASIN-
604 AM MDT MON APR 13 2015

AFTER A WARM AND WINDY TUESDAY...A STRONG STORM SYSTEM WILL USHER IN
SHARPLY COLDER WEATHER...WINDY AND SNOWY WEATHER TUESDAY NIGHT AND
WEDNESDAY. UNCERTAINTY REMAINS ON EXACT SNOWFALL AMOUNTS AND
LOCATION OF THE BEST SNOW BUT MANY AREAS WILL SEE AT LEAST 1 TO 3
INCHES OF SNOW WITH MORE POSSIBLE IN THE UPSLOPE FAVORED LOCATIONS
ALONG THE CODY FOOTHILLS AND SOUTH OF TEN SLEEP NEAR BIG TRAILS.THE
SNOW WILL COMBINE WITH A NORTH WIND OF 20 TO 30 MPH WITH SOME AREAS
SEEING WIND GUSTS TO 50 MPH. STAY TUNED FOR THE LATEST FORECAST ON
THIS DRAMATIC CHANGE BACK TO SNOW...WIND AND COLD LATE TUESDAY NIGHT
AND WEDNESDAY.

$$

TEAM RIVERTON



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