Strong westerly flow aloft and a tightening pressure gradient led to the development of a mountain wave lee of the Absaroka Range. The strongest winds were centered around Clark, where a maximum wind gust of 80 mph was registered 5 miles west-northwest of town.
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The episode as NWS RIW wrote it up.
Strong westerly flow aloft and a tightening pressure gradient led to the development of a mountain wave lee of the Absaroka Range. The strongest winds were centered around Clark, where a maximum wind gust of 80 mph was registered 5 miles west-northwest of town.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before the first event at Mar 6, 2:46 AM MST, 28 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 246 AM MST THU MAR 6 2014 .SHORT TERM...THURSDAY THROUGH SATURDAY NIGHT FEW MOUNTAIN SHOWERS THIS EVENING...WILL BEGIN TO INCREASE OVERNIGHT AS A RIDGE RIDING SW BUMPS INTO THE WESTERN MOUNTAINS BY 08Z. TEMPS THIS MORNING WILL BRING A VARIETY OF LIQUID/FROZEN AND MIXED PRECIP. TOUGH CALL IN PLACES LIKE JACKSON WITH H7 TEMPS AROUND -3 TO -4 BUT S TO SW SFC WINDS TRYING TO WARM THINGS A BIT DOWN LOW. ADDITIONALLY...WINDS WILL PICK OVERNIGHT TO NEAR OR ABOVE WARNING CRITERIA IN ZONE 03 - THE CODY FOOTHILLS AS TIGHT P AND T GRADS FROM SFC TO MID LVLS DEVELOP AND H7 WINDS INCREASE TO 50-60KTS. ADDITIONALLY...OMEGA FIELDS IN THE DRY ATMOSPHERE CONTINUE TO INDICATE HIGH WIND POTENTIAL AND THE ABILITY TO BRING DOWN SOME OF THE UPR FLOW WITH MOUNTAIN WAVE DEVELOPMENT. LEE BREAKING WAVE CLOUDS ARE NOW JUST STARTING TO SHOW UP IN SAT IMAGERY. SEVERAL SPOTS IN THE CODY FOOTHILLS HAVE STARTED TO GUST BETWEEN 45 AND 55 MPH AND SHOULD INCREASE THROUGH THE MORNING...MOST LIKELY PEAKING BY MID MORNING. HIGH WIND WARNING FOR CODY FOOTHILLS HAS FOLLOWED THE WATCH AND STRETCHES FROM 03Z TONIGHT UNTIL 18Z THIS MORNING. WINDS ARE ALSO PICKING UP AND GUSTING 40-50 MPH ACROSS THE SE WIND CORRIDOR OF ZONES 19 AND 20 AND ALSO 15 AND 16. THROUGH THE SHORT TERM...THE STRONGEST UPR LVL SUPPORT WILL ARRIVE IN A FEW HOURS AS STATED ABOVE...WITH DECENT AMOUNTS OF PAC MOISTURE IN TOW. HOWEVER...THIS WILL BE A HARD BUT ALSO RATHER QUICK HITTER...AS EVEN THE MAIN WAVE AXIS WILL BE THRU THE CWA BY FRI MORNING. STAYING AHEAD OF THIS WAVE... AN IMMATURE FRONT WILL ALSO ROLL THRU THE REGION BY THIS EVENING...BECOMING MUCH BETTER ORGANIZED ONCE IT GETS TO OUR SOUTH. THIS AFTERNOON MUCH OF THE ACTIVITY WILL LIKELY BECOME CONVECTIVE AND MORE SCATTERED...AND REMAIN SO UNTIL AFTER THE MAIN TROF AXIS PASSES. OVERALL...THE MOUNTAINS OF THE WEST WILL MAKE OUT WELL. HOWEVER...NOW IT NOW LOOKS TO BE A SYSTEM THAT REMAINS AOB ADVISORY LEVEL IN THE WRN MOUNTAINS...WITH THE BULK OF STRONGER ACTIVITY COMING BETWEEN SUNRISE AND NOON IN PARK AND TETON COUNTIES AND THE WESTERN WIND RIVER MOUNTAINS...SHIFTING SWD INTO LINCOLN COUNTY THIS AFTERNOON. GENERAL SNOWFALL AMOUNTS SHOULD TOTAL OUT BY THIS EVENING AT BETWEEN 3 AND 6 INCHES WITH LOCALIZED HIGHER AMOUNTS FROM 7 TO 10 INCHES IN THE TETONS N INTO THE SRN PORTION OF YELLOWSTONE. THEN... POST FRONTAL LIGHT CONVECTIVE PRECIP WILL LINGER THROUGH TONIGHT NIGHT AND FRIDAY WITH LITTLE ADDITIONAL ACCUMULATING SNOW. TODAY MAY END UP BEING THE WARMEST DAY OF THE WEEK ACROSS MUCH OF THE CWA...PARTICULARLY E OF THE DIVIDE...WITH TEMPS CLIMBING INTO THE 50S AND LOWER LOWER 60S IN THE BASINS AND OVR THE ERN HIGH PLAINS OF JOHNSON AND NATRONA COUNTIES. FROM FRI NIGHT ON THROUGH SUN MORNING...IT DRIES OUT STATE WIDE WITH BRIGHT SUN BREAKING OUT EVERYWHERE WITH HIGH TEMPS CLIMBING BACK INTO THE UPPER 40S AND 50S E OF THE DIVIDE AND MOSTLY 40S WEST. SAT NIGHT...W TO SW WINDS WILL ALSO BEGIN TO INCREASE OVR AND IN THE LEE OF THE ABSAROKA MOUNTAINS...POSSIBLY GETTING DOWN INTO THE CODY FOOTHILL REGION. .LONG TERM...SUNDAY THROUGH THURSDAY FAIRLY LARGE DISCREPANCIES BETWEEN THE OPERATIONAL GFS AND ECMWF MODELS TONIGHT. THE OP ECMWF IS FASTER THAN THE OP GFS WITH OUR NEXT POTENTIAL WEATHER MAKER MONDAY AND TUESDAY. SUNDAY IS DRY WITH THE FLOW GENERALLY FLATTENING WITH INCREASING WIND AND MILD TEMPERATURES FOR MUCH OF THE AREA AS H7 TEMPERATURES GET TO NEAR 0C AT H7 OR POSSIBLY WARMER. AFTER THAT...THE GFS HAS A LEAD SHORTWAVE THAT PRODUCES A QUICK SHOT OF SNOW OUT WEST WEDNESDAY WITH A COLD FRONT DROPPING SOUTH ACROSS THE NORTH WITH RAIN POTENTIALLY CHANGING TO SNOW MONDAY NIGHT. THE GFS THEN HAS THE MAIN TROUGH MOVING IN FROM THE WEST TUESDAY INTO TUESDAY NIGHT POTENTIALLY CLOSING OFF OVER SRN IDAHO BEFORE IT TRACKS ACROSS SRN WYOMING TUESDAY NIGHT FOR A POTENTIAL SIGNIFICANT SNOWSTORM FOR CENTRAL WYOMING. THE OP ECMWF HAS THE RIDGE AXIS DEVELOPING SLIGHTLY FURTHER EWD AND HAS MOST OF THE ENERGY WITH THE FIRST SHORTWAVE LATE MONDAY INTO MONDAY NIGHT AND TUESDAY MORNING. THIS SOLUTION WOULD RESULT IN RAIN CHANGING TO SNOW OUT WEST BY MONDAY AFTERNOON INTO MONDAY EVENING WITH SNOW DEVELOPING AND DROPPING SOUTH ACROSS CENTRAL WYOMING MONDAY NIGHT AND TUESDAY WITH THE SECONDARY SHORTWAVE DROPPING DOWN FROM THE NORTH TUESDAY AFTERNOON AND EVENING. THE ECMWF ENSEMBLE HAVE THE RIDGE AXIS SLIGHTLY FURTHER WEST LIKE THE GFS. TOUGH TO PICK THE BETTER SOLUTION RIGHT NOW AS THEY ARE BOTH POSSIBLE WITH ONLY SUBTLE SHIFTS IN THE PATTERN MAKING ONE RIGHT OR WRONG. BOTTOM LINE INDICATES AN UNSETTLED PERIOD FOR THE FIRST HALF OF THE WEEK WITH A POTENTIAL DECENT SNOW EVENT FOR ESPECIALLY CENTRAL WYOMING AS EARLY AS MONDAY NIGHT OR AS LATE AS TUESDAY NIGHT. HOWEVER...BOTH HAVE TWO SYSTEMS INVOLVED WITH A CHANCE OF RAIN/SNOW EITHER AT THE BEGINNING OR END OF THE PERIOD. GENERALLY HAVE LIKELY POPS OUT WEST MONDAY WITH CHANCE POPS EAST OF THE DIVIDE MUCH OF THE PERIOD MONDAY NIGHT THROUGH TUESDAY NIGHT WITH FALLING TEMPERATURES. GFS DRIES US OUT WEDNESDAY NIGHT AND THURSDAY WHILE THE OP ECMWF HAS A SYSTEM MOVING IN FROM THE WEST THURSDAY AND THURSDAY NIGHT WITH A DECENT SHOT OF RAIN AND SNOW ACROSS THE AREA. THE ECMWF ENSEMBLES SUPPORT MORE OF THE GFS IDEA OF BUILDING HEIGHTS TO THE WEST WITH A DRY END OF THE MEDIUM RANGE PERIOD AND THIS WAS FOLLOWED. && .AVIATION.../12Z ISSUANCE/ EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL ROUTES STRONG WESTERLY FLOW AHEAD OF A DISTURBANCE WILL RESULT IN DOWNSLOPING AND MAINLY DRY /VFR/ CONDITIONS IN THE LOWER ELEVATIONS TODAY. THE MAIN IMPACT WILL BE VERY WINDY CONDITIONS IN THE DUBOIS AREA...SOUTH PASS TO CASPER...AS WELL AS THE CODY FOOTHILLS. HOWEVER MOUNTAINS WILL SEE SOME SNOW...ESPECIALLY ALONG THE DIVIDE WHERE MOUNTAINS WILL BE SOCKED IN WITH IFR CONDITIONS MUCH OF TIME. A COLD FRONT WILL PUSH ACROSS THE AREA TONIGHT...SHIFTING WINDS TO THE NORTHWEST AND NORTH. SOME SHOWER ACTIVITY COULD IMPACT THE LOWER ELEVATIONS TONIGHT WITH THE FRONTAL PASSAGE WITH THE BEST SHOT OVER JOHNSON AND NATRONA COUNTIES. WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS ROUTES SCATTERED TO NUMEROUS MOUNTAIN SNOW...VALLEY RAIN AND SNOW SHOWERS WILL BE ONGOING AT 12Z ACROSS THE WEST AND NORTHWEST WYOMING. THIS ACTIVITY WILL EXPAND AND PUSH SOUTHEAST DURING THE DAY AFFECTING MUCH OF THE AREA AS A COLD FRONT PUSHES ACROSS THE REGION THIS AFTERNOON AND EVENING. ALTHOUGH THE COVERAGE AND INTENSITY WILL DECREASE IN WAKE OF THE FRONT...SOME SNOW SHOWER ACTIVITY WILL REMAIN OUT WEST THROUGH THE NIGHT. THE HEAVIEST ACTIVITY IS EXPECTED TO IMPACT KJAC BETWEEN 14Z AND 19Z...KBPI AND KPNA BETWEEN 17Z AND 22Z...AND THEN KRKS BETWEEN 22Z AND 03Z. MVFR/IFR CONDITIONS ARE LIKELY AT THE ABOVE SITES AT THE TIMES MENTIONED ABOVE...WITH MVFR CONDITIONS EXPECTED MUCH OF THE TIME OVER THE FAR WESTERN VALLEYS INCLUDING THE KJAC TERMINAL. MOUNTAINS WILL BE OBSCURED THROUGH THE TAF FORECAST PERIOD. && .FIRE WEATHER... NO FIRE WEATHER CONCERNS THROUGH THE REST OF THE WEEK. HOWEVER...DRY AND WARMER WEATHER CONTINUES TODAY EAST THE DIVIDE WITH HIGH TEMPERATURES AT THE LOWER ELEVATIONS REACHING INTO THE 50S AND LOWER 60S. OTHERWISE...WEST TO SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS NEAR 50 CAN BE EXPECTED THROUGH THIS MORNING ACROSS THE SOUTHEASTERN DISPATCH ZONES. STRONG WEST WINDS WITH GUSTS OVER 60 MPH AT TIMES WILL ALSO BLOW IN THE CODY FOOT HILLS THROUGH THIS MORNING UNTIL AFTER A WEAK COLD FRONT PASSES BY. ADDITIONALLY...THE NEXT IN A SERIES OF UPPER LEVEL DISTURBANCES COMBINING WITH PACIFIC MOISTURE HAS PUSHED INTO THE WESTERN ZONES THIS MORNING WITH PRECIPITATION INCREASING. GENERALLY...3 TO 6 INCHES OF NEW SNOWFALL CAN BE EXPECTED ABOVE 6500 FEET WITH SOME LOCALIZED FAVORED AREAS RECEIVING UP TO 10 INCHES OF NEW SNOW BY SUNDOWN TONIGHT. TONIGHT THROUGH FRIDAY...WIDESPREAD LIGHT SHOWER ACTIVITY WILL CONTINUE ACROSS THE WESTERN DISPATCH ZONES...BUT WITH ONLY A FEW INCHES OF ADDITIONAL SNOWFALL BY THE END OF THE DAY FRIDAY. && .RIW WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING UNTIL 11 AM MST THIS MORNING WYZ003. && SHORT TERM...BRAUN LONG TERM...SKRBAC AVIATION...WM FIRE WEATHER...BRAUN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 312 PM MST WED MAR 5 2014 WYZ001>020-022>030-061200- 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- 312 PM MST WED MAR 5 2014 ...FLOOD ADVISORY FOR MELTING SNOW FOR NORTHWESTERN LINCOLN COUNTY IN WEST CENTRAL WYOMING... ...HIGH WIND WARNING FOR THE CODY FOOTHILLS TONIGHT THROUGH THURSDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...REMAINDER OF THIS AFTERNOON AND TONIGHT MINOR FLOODING CAN BE EXPECTED THROUGHOUT THE STAR VALLEY THROUGH TONIGHT...ESPECIALLY BEFORE MIDNIGHT AS A RESULT OF A HEAVY SNOWPACK MELTING AS TEMPERATURES HAVE RISEN ABOVE FREEZING. PLEASE SEE THE LATEST FLOOD ADVISORY FOR FURTHER INFORMATION AND UPDATES. SCATTERED LIGHT SNOW SHOWERS ACROSS THE WESTERN MOUNTAINS WILL INCREASE IN INTENSITY TONIGHT AS ANOTHER UPPER LEVEL DISTURBANCE APPROACHES. ADDITIONALLY...WEST TO SOUTHWEST WINDS WILL BECOME STRONG IN THE CODY FOOTHILLS TONIGHT WITH GUSTS GREATER THAN 60 MPH AT TIMES. PLEASE SEE THE LATEST HIGH WIND WARNING FOR MORE INFORMATION. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH SUNDAY THURSDAY AND FRIDAY...SNOW WILL CONTINUE AND BECOME HEAVY AT TIMES IN THE WESTERN MOUNTAINS THURSDAY MORNING BEFORE DECREASING IN INTENSITY AND BECOMING MORE SHOWERY IN NATURE LATER THURSDAY AFTERNOON THROUGH FRIDAY. MINOR FLOODING IS EXPECTED TO CONTINUE IN THE STAR VALLEY THURSDAY AS TEMPERATURE CLIMB ABOVE FREEZING AND SOME RAINFALL FALLS ON THE MELTING SNOWPACK IN THE VALLEY. VERY STRONG WINDS WILL CONTINUE INTO THURSDAY MORNING ACROSS THE CODY FOOTHILLS. AN ISOLATED LIGHTNING STRIKE IS POSSIBLE MAINLY IN WESTERN WYOMING THURSDAY AND FRIDAY AFTERNOONS. SUNDAY NIGHT AND MONDAY...A CHANCE FOR SNOW IN THE WESTERN MOUNTAINS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE URGED TO REPORT ANY SNOWFALL TOTALS...ANY FLOODING AND WIND GUSTS OF OVER 50 MPH BY PHONE...EMAIL...OR SOCIAL MEDIA. THANK YOU. TEAM RIVERTON
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 921 PM MST WED MAR 5 2014 WYZ019-020-061000- GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 921 PM MST WED MAR 5 2014 STRONG SOUTHWEST WINDS BETWEEN 25 AND 40 MPH WILL OCCUR TONIGHT ACROSS PORTIONS OF SOUTHEAST FREMONT INTO MUCH OF NATRONA COUNTY TONIGHT. A FEW GUSTS NEAR 50 MPH COULD OCCUR. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE CAUTIOUS IF TRAVELING THROUGH THESE AREAS TONIGHT. WYZ015-016-061000- UPPER WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST- 921 PM MST WED MAR 5 2014 STRONG WEST TO SOUTHWEST WIND BETWEEN 20 AND 40 MPH...WITH GUSTS TO 55 MPH WILL OCCUR AROUND DUBOIS AND SOUTH PASS TONIGHT. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE ESPECIALLY CAUTIOUS IF TRAVELING OVER SOUTH PASS...AND BETWEEN DUBOIS AND TOGWOTEE PASS TONIGHT DUE TO STRONG WIND AND REDUCED VISIBILITY FROM BLOWING SNOW. 21
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 120 AM MST THU MAR 6 2014 WYZ019-020-061900- GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 120 AM MST THU MAR 6 2014 SOUTHWEST WINDS BETWEEN 25 AND 40 MPH WILL CONTINUE THIS MORNING ACROSS PORTIONS OF SOUTHEAST FREMONT INTO MUCH OF NATRONA COUNTY. A FEW GUSTS NEAR 50 MPH COULD OCCUR. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE CAUTIOUS IF TRAVELING THROUGH THESE AREAS TONIGHT. WYZ014-015-061900- WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- 120 AM MST THU MAR 6 2014 WEST TO SOUTHWEST WIND BETWEEN 20 AND 40 MPH...WITH GUSTS TO 55 MPH WILL OCCUR THIS MORNING. ADDITIONALLY...LIGHT SNOW WILL BEGIN TO FALL AFTER SUNRISE AND INCREASE IN EXTENT AND INTENSITY BY LATE THIS MORNING...BEFORE DECREASING LATER THIS AFTERNOON INTO THIS EVENING. BELOW 6500 FEET...A RAIN AND SNOW MIX IS EXPECTED. OTHERWISE...3 TO 6 INCHES OF SNOW IS EXPECTED ABOVE 7000 FEET...WITH ISOLATED HIGHER AMOUNTS. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE ESPECIALLY CAUTIOUS IF TRAVELING OVER SOUTH PASS...DUE TO STRONG WIND AND REDUCED VISIBILITY FROM SNOW AND BLOWING SNOW. WYZ016-061900- UPPER WIND RIVER BASIN- 120 AM MST THU MAR 6 2014 WEST TO SOUTHWEST WIND BETWEEN 20 AND 35 MPH...WITH GUSTS TO 50 MPH WILL CONTINUE AROUND DUBOIS THIS MORNING. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE ESPECIALLY CAUTIOUS IF TRAVELING BETWEEN DUBOIS AND TOGWOTEE PASS DUE TO STRONG WIND AND REDUCED VISIBILITY FROM BLOWING SNOW. WYZ001-061900- YELLOWSTONE NATIONAL PARK- 120 AM MST THU MAR 6 2014 SNOW WILL DEVELOP EARLY THIS MORNING...AND BECOME HEAVY AT TIMES BY SUNRISE...BEFORE DECREASING IN COVERAGE AND INTENSITY THURSDAY AFTERNOON. BELOW 6500 FEET...A RAIN AND SNOW MIX OR ALL RAIN IS EXPECTED. OTHERWISE...3 TO 6 INCHES OF SNOW IS EXPECTED ABOVE 7000 FEET...WITH ISOLATED HIGHER AMOUNTS OVER THE SOUTHWEST PORTION OF YELLOWSTONE. WYZ012-013-061900- JACKSON HOLE-TETON AND GROS VENTRE MOUNTAINS- 120 AM MST THU MAR 6 2014 PRECIPITATION WILL BREAK OUT ACROSS JACKSON HOLE AND THE SURROUNDING MOUNTAINS THIS MORNING. SNOW IS EXPECTED ABOVE 6500 FEET...WHILE BOTH RAIN AND SNOW ARE EXPECTED BELOW 6500 FEET. SNOWFALL COULD BE HEAVY AT TIMES THIS MORNING... WITH SNOWFALL RATES AROUND ONE INCH AN HOUR POSSIBLE...BEFORE DECREASING IN COVERAGE AND INTENSITY IN THE AFTERNOON. GENERALLY...3 TO 6 INCHES OF SNOW IS EXPECTED ACROSS THE MOUNTAINS...WITH ISOLATED HIGHER AMOUNTS OVER THE TETONS. NORTHERN JACKSON HOLE...AND AROUND WILSON COULD RECEIVE 2 TO 3 INCHES OF SNOW...WHILE THE TOWN OF JACKSON SHOULD RECEIVE AN INCH OR LESS. TRAVEL OVER TETON AND TOGWOTEE PASSES COULD BE DIFFICULT AT TIMES DURING BURSTS OF HEAVIER SNOW. WYZ024-061900- SALT RIVER AND WYOMING RANGES- 120 AM MST THU MAR 6 2014 SNOW WILL BEGIN TO FALL AND INCREASE THIS MORNING ACROSS THE SALT RIVER AND WYOMING MOUNTAIN RANGES. SNOW COULD BECOME HEAVY AT TIMES ROUGHLY BETWEEN 10 AM AND 3 PM. THE SNOW IS THEN EXPECTED TO DECREASE IN COVERAGE AND INTENSITY LATE THIS AFTERNOON INTO THIS EVENING. GENERALLY...3 TO 6 INCHES OF SNOW IS EXPECTED IN THE MOUNTAINS. WYZ025-061900- UPPER GREEN RIVER BASIN FOOTHILLS- 120 AM MST THU MAR 6 2014 SNOW WILL BREAK OUT ACROSS THE UPPER GREEN RIVER BASIN BY MID MORNING. SNOW COULD BE MODERATE IN INTENSITY AT TIMES ESPECIALLY NEAR BONDURANT...AND COULD BRIEFLY MIX WITH OR CHANGE TO RAIN. AROUND 1 INCH IS EXPECTED NEAR PINEDALE...WHILE 2 TO 4 INCHES COULD OCCUR NEAR BONDURANT. THE SNOW IS THEN EXPECTED TO DECREASE IN COVERAGE AND INTENSITY LATER THIS AFTERNOON INTO THIS EVENING. JB/21
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 156 AM MST THU MAR 6 2014 WYZ019-020-061900- GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 156 AM MST THU MAR 6 2014 SOUTHWEST WINDS BETWEEN 25 AND 40 MPH WILL CONTINUE THIS MORNING ACROSS PORTIONS OF SOUTHEAST FREMONT INTO MUCH OF NATRONA COUNTY. A FEW GUSTS NEAR 50 MPH COULD OCCUR. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE CAUTIOUS IF TRAVELING THROUGH THESE AREAS TONIGHT. WYZ014-015-061900- WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- 156 AM MST THU MAR 6 2014 WEST TO SOUTHWEST WIND BETWEEN 20 AND 40 MPH...WITH GUSTS TO 55 MPH WILL OCCUR THIS MORNING. ADDITIONALLY...LIGHT SNOW WILL BEGIN TO FALL AFTER SUNRISE AND INCREASE IN EXTENT AND INTENSITY BY LATE THIS MORNING...BEFORE DECREASING LATER THIS AFTERNOON INTO THIS EVENING. BELOW 6500 FEET...A RAIN AND SNOW MIX IS EXPECTED. OTHERWISE...3 TO 6 INCHES OF SNOW IS EXPECTED ABOVE 7000 FEET...WITH ISOLATED HIGHER AMOUNTS. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE ESPECIALLY CAUTIOUS IF TRAVELING OVER SOUTH PASS...DUE TO STRONG WIND AND REDUCED VISIBILITY FROM SNOW AND BLOWING SNOW. WYZ016-061900- UPPER WIND RIVER BASIN- 156 AM MST THU MAR 6 2014 WEST TO SOUTHWEST WIND BETWEEN 20 AND 35 MPH...WITH GUSTS TO 50 MPH WILL CONTINUE AROUND DUBOIS THIS MORNING. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE ESPECIALLY CAUTIOUS IF TRAVELING BETWEEN DUBOIS AND TOGWOTEE PASS DUE TO STRONG WIND AND REDUCED VISIBILITY FROM BLOWING SNOW. WYZ001-061900- YELLOWSTONE NATIONAL PARK- 156 AM MST THU MAR 6 2014 SNOW WILL DEVELOP EARLY THIS MORNING...AND BECOME HEAVY AT TIMES BY SUNRISE...BEFORE DECREASING IN COVERAGE AND INTENSITY THURSDAY AFTERNOON. BELOW 6500 FEET...A RAIN AND SNOW MIX OR ALL RAIN IS EXPECTED. OTHERWISE...3 TO 6 INCHES OF SNOW IS EXPECTED ABOVE 7000 FEET...WITH ISOLATED HIGHER AMOUNTS OVER THE SOUTHWEST PORTION OF YELLOWSTONE. WYZ012-013-061900- JACKSON HOLE-TETON AND GROS VENTRE MOUNTAINS- 156 AM MST THU MAR 6 2014 PRECIPITATION WILL BREAK OUT ACROSS JACKSON HOLE AND THE SURROUNDING MOUNTAINS THIS MORNING. SNOW IS EXPECTED ABOVE 6500 FEET...WHILE BOTH RAIN AND SNOW ARE EXPECTED BELOW 6500 FEET. SNOWFALL COULD BE HEAVY AT TIMES THIS MORNING... WITH SNOWFALL RATES AROUND ONE INCH AN HOUR POSSIBLE...BEFORE DECREASING IN COVERAGE AND INTENSITY IN THE AFTERNOON. GENERALLY...3 TO 6 INCHES OF SNOW IS EXPECTED ACROSS THE MOUNTAINS...WITH ISOLATED HIGHER AMOUNTS OVER THE TETONS. NORTHERN JACKSON HOLE...AND AROUND WILSON COULD RECEIVE 2 TO 3 INCHES OF SNOW...WHILE THE TOWN OF JACKSON SHOULD RECEIVE AN INCH OR LESS. TRAVEL OVER TETON AND TOGWOTEE PASSES COULD BE DIFFICULT AT TIMES DURING BURSTS OF HEAVIER SNOW. WYZ024-061900- SALT RIVER AND WYOMING RANGES- 156 AM MST THU MAR 6 2014 SNOW WILL BEGIN TO FALL AND INCREASE THIS MORNING ACROSS THE SALT RIVER AND WYOMING MOUNTAIN RANGES. SNOW COULD BECOME HEAVY AT TIMES ROUGHLY BETWEEN 10 AM AND 3 PM. THE SNOW IS THEN EXPECTED TO DECREASE IN COVERAGE AND INTENSITY LATE THIS AFTERNOON INTO THIS EVENING. GENERALLY...3 TO 6 INCHES OF SNOW IS EXPECTED IN THE MOUNTAINS. WYZ025-061900- UPPER GREEN RIVER BASIN FOOTHILLS- 156 AM MST THU MAR 6 2014 SNOW WILL BREAK OUT ACROSS THE UPPER GREEN RIVER BASIN BY MID MORNING. SNOW COULD BE MODERATE IN INTENSITY AT TIMES ESPECIALLY NEAR BONDURANT...AND COULD BRIEFLY MIX WITH OR CHANGE TO RAIN. AROUND 1 INCH IS EXPECTED NEAR PINEDALE...WHILE 2 TO 4 INCHES COULD OCCUR NEAR BONDURANT. THE SNOW IS THEN EXPECTED TO DECREASE IN COVERAGE AND INTENSITY LATER THIS AFTERNOON INTO THIS EVENING. WYZ002-061900- ABSAROKA MOUNTAINS- 156 AM MST THU MAR 6 2014 WEST TO SOUTHWEST WIND BETWEEN 30 AND 50 MPH...WITH A FEW GUSTS TO 75 MPH WILL OCCUR THROUGH THIS MORNING. ADDITIONALLY...LIGHT SNOW WILL BEGIN TO FALL AFTER SUNRISE AND INCREASE IN EXTENT AND INTENSITY BY LATE THIS MORNING...BEFORE DECREASING EARLY THIS AFTERNOON. BELOW 6500 FEET...A RAIN AND SNOW MIX IS EXPECTED. OTHERWISE...3 TO 6 INCHES OF SNOW IS EXPECTED ABOVE 7000 FEET...WITH ISOLATED HIGHER AMOUNTS. LIGHTWEIGHT AND HIGH PROFILE VEHICLES SHOULD BE ESPECIALLY CAUTIOUS...DUE TO STRONG WIND AND REDUCED VISIBILITY FROM SNOW AND BLOWING SNOW. JB/21
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Consistent wind gusts above 60 mph and in many cases 70 mph were recorded at a sensor 5 miles west-northwest of Clark. The maximum wind gust was 80 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2014Every state in 2014This day in weather historyWarnings in Wyoming, March 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 496862.