A mountain wave produced high winds in the northern portions of the Cody Foothills. The maximum winds were west of Clark where two gusts of 70 mph were reported during the overnight hours of February 15-16.
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The episode as NWS RIW wrote it up.
A mountain wave produced high winds in the northern portions of the Cody Foothills. The maximum winds were west of Clark where two gusts of 70 mph were reported during the overnight hours of February 15-16.
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 Feb 15, 10:12 PM MST, 1 hour 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 1012 PM MST SAT FEB 15 2014 .SHORT TERM...TONIGHT THROUGH SUNDAY THE MOUNTAINS OF THE WEST WILL SEE MORE SNOWFALL AND STRONG WINDS TONIGHT AND SUNDAY WITH A WINTER WEATHER ADVISORY IN PLACE. SNOWFALL OF 8 TO 12 INCHES IS EXPECTED IN THE HIGHER MOUNTAINS AND WEST FACING SLOPES WITH LOCAL AREAS UP TO 15 INCHES IN THE TETONS AND SOUTHERN YELLOWSTONE N.P. STRONG WINDS OF 25 TO 35 MPG WITH GUSTS FROM 45 TO 55 MPH LOCALLY AS HIGH AS 65 MPH OVER THE HIGHER RIDGES...PASSES AND PEAKS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. EAST OF THE CONTINENTAL DIVIDE STRONG WINDS WILL BLOWS ALONG AND NEAR THE EAST SLOPES OF THE MOUNTAINS AND PICK UP THROUGH THE WIND CORRIDOR FROM EASTERN SWEETWATER...SOUTHERN FREMONT AND NATRONA COUNTIES. THE CODY FOOTHILLS SHOULD SEE THE DEVELOPMENT OF A MOUNTAIN WAVE WITH HIGH WINDS POSSIBLE FROM 8 PM MST THIS EVENING THROUGH 11 AM MST SUNDAY. THE HIGHEST WINDS SHOULD BE FROM MIDNIGHT TO SUNRISE WITH GUSTS AROUND 75 MPH POSSIBLE IN AND AROUND CLARK ON HIGHWAY 120. TEMPERATURES WILL REMAIN MODERATED TONIGHT AND SUNDAY. .LONG TERM...SUNDAY NIGHT THROUGH SATURDAY IT LOOKS LIKE A BRIEF RESPITE FOLLOWED BY A MORE ACTIVE PATTERN AND THEN A RETURN TO COLDER WEATHER. THE SYSTEM THAT WILL BRING SNOW TO THE WEST FOR SUNDAY WILL CROSS THE DIVIDE FOR SUNDAY NIGHT AND BRING THE CHANCE OF SOME PRECIPITATION EAST OF THE DIVIDE. FOR NOW...WE HAVE KEPT POPS AND AMOUNTS FAIRLY LOW. LIKE ANY STORM WITH NORTHWESTERLY FLOW...WE WILL HAVE THE CHANCE OF THOSE PAIN IN THE NECK SNOW BANDS TO FORM THAT COULD BRING LOCALLY HIGHER AMOUNTS OF SNOW. BUT AGAIN...AS WE HAVE STATED MANY TIMES BEFORE...PINPOINTING THESE IS IMPOSSIBLE THIS FAR OUT. THESE SHOULD SHIFT OUT OF THE AREA LATER SUNDAY NIGHT WITH MAINLY DRY WEATHER AFTER MIDNIGHT. MONDAY STILL LOOKS TO BE MAINLY QUIET RAIN AND SNOW WISE DAY ACROSS THE STATE AS WE WILL BE IN BETWEEN SYSTEMS. THE NAM KEEPS SOME PRECIPITATION GOING IN THE NORTHWEST. HOWEVER...WE FEEL THE AMOUNT IS OVERDONE. THE GFS AND EUROPEAN ARE MAINLY DRY THOUGH. FOR NOW WE HAVE LEFT THE FORECAST MAINLY DRY. THE MAIN THREAT WILL BE WIND FOR THIS DAY. THE PRESSURE GRADIENT WILL CONTINUE TO TIGHTEN IN RESPONSE TO YET ANOTHER STORM APPROACHING FROM THE WEST. ALL THE MODELS CONTINUE TO SHOW 700 MILLIBAR WINDS CLIMBING TO OVER 50 KNOTS ACROSS MUCH OF THE AREA FOR MONDAY AFTERNOON AND EVENING. THERE COULD BE SOME ADDITIONAL DOWNWARD FORCING AS WELL FROM THE APPROACHING RIGHT FRONT QUAD OF A JET STREAM. AS OF NOW...WIND HIGHLIGHTS COULD BE A GOOD POSSIBILITY FOR MONDAY AFTERNOON AND EVENING. FOR TUESDAY...THE MODELS CONTINUE TO SHOW ONLY LIGHT PRECIPITATION IN THE WESTERN MOUNTAINS THROUGH THE DAY BEFORE THE NEXT SLUG OF PACIFIC MOISTURE MOVES IN FOR LATER TUESDAY NIGHT AND WEDNESDAY. WE WILL SEE A RETURN TO COLDER TEMPERATURES STARTING WEDNESDAY AS COLDER AIR BEGINS TO DRAIN IN FROM CANADA. AT THIS TIME...IT DOES NOT LOOK AS COLD AS EARLIER THIS MONTH. HOWEVER...GIVEN THE RECENT MILD CONDITIONS IT WILL BE A BIT OF A SHOCK TO THE SYSTEM. THERE WILL CONTINUE TO BE ADDITIONAL SNOW ACROSS THE WESTERN MOUNTAINS. AS FAR AS EAST OF THE MOUNTAINS...SOME SNOW IS POSSIBLE WEDNESDAY BUT CONTINUED DOWNSLOPING FLOW SHOULD KEEP AMOUNTS LIGHT. A MUCH BETTER CHANCE LOOKS TO ARRIVE FOR THURSDAY NIGHT AND FRIDAY WITH BETTER FORCING AND BETTER DYNAMICS MOVING IN. DETAILS AND AMOUNTS ARE STILL HIGHLY UNCERTAIN...AS WOULD BE EXPECTED THIS FAR OUT. HOWEVER...IT DOES LOOK FAIRLY CERTAIN THAT THERE WILL BE A RETURN TO MUCH COLDER WEATHER FOR THE AREA. && .AVIATION.../06Z ISSUANCE/ EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL ROUTES A STRONG COLD FRONT WILL PUSH EAST ACROSS CENTRAL WYOMING SUNDAY AFTERNOON. WINDS AND AREAS OF LLWS WILL CONTINUE TO INCREASE SUNDAY MORNING AHEAD OF THE FRONT. VFR CONDITIONS WILL PREVAIL THROUGH THE MORNING AND THEN A BAND OF SCT-NMRS MVFR/IFR -SHSN WILL ACCOMPANY THE FRONT PRIMARILY FROM 20Z SUN THROUGH 03Z MONDAY. MOST TERMINALS WILL SEE A QUICK PASSING OF THESE CONDITIONS FOR AN HOUR OR TWO...BUT MVFR/IFR CONDITIONS MAY LINGER LONGER VCNTY KCPR EARLY SUNDAY EVENING. VFR CONDITIONS WITH UNLIMITED CIGS WILL PREVAIL AFTER 03Z MONDAY. WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS ROUTES A STRONG COLD FRONT WILL PUSH THROUGH THE AREA 15Z-18Z SUNDAY. SNOW LEVELS WILL REMAIN MAINLY ABOVE 7KFT THROUGH 10Z WITH MTS MOSTLY OBSCURED IN -SN AND SCT MVFR -SHRASN OVER THE VALLEYS. SNOW WILL INCREASE AHEAD OF THE FRONT WITH WIDESPREAD IFR/LIFR CONDITIONS EXPECTED WITH THE FRONTAL PASSAGE FROM 15Z-19Z VCNTY AND NORTH OF KBPI. RAPID CLEARING WILL OCCUR BEHIND THE FRONT MID TO LATE AFTERNOON WITH MTS ABOVE 9KFT REMAINING MOSTLY OBSCURED IN -SHSN. THESE LINGERING SHSN SHOULD RAPIDLY DISSIPATED AFTER SUNSET SUNDAY EVENING. && .FIRE WEATHER... SNOW...WITH SOME RAIN IN THE VALLEYS WILL BE WIDESPREAD ACROSS THE WEST TONIGHT AND SUNDAY SPREADING ACROSS THE NORTH SUNDAY AFTERNOON. THE REST OF THE AREA WILL HAVE VARIABLE CLOUDS WITH A FEW SHOWERS POSSIBLE. MUCH OF THE AREA WILL EXPERIENCE STRONG WEST WINDS...ESPECIALLY THE HIGHER MOUNTAINS AND ALONG AND NEAR THE EAST SLOPES OF THE MOUNTAINS. HIGH WINDS ARE POSSIBLE FROM 8 PM THIS EVENING THROUGH 11 AM SUNDAY IN THE CODY FOOTHILLS WITH LOCAL GUSTS TO 75 MPH POSSIBLE. MOST AREAS WILL HAVE LOW MIXING HEIGHTS AND POOR SMOKE DISPERSAL EXCEPT THE WINDIER AREAS WHICH WILL HAVE BETTER MIXING AND MAY SEE FAIR TO GOOD SMOKE DISPERSAL SUNDAY AFTERNOON. && .RIW WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY FROM 5 PM THIS AFTERNOON TO 5 PM MST SUNDAY WYZ001-002-012-014-024. HIGH WIND WARNING FROM 8 PM THIS EVENING TO 11 AM MST SUNDAY WYZ003. && SHORT TERM...C.BAKER LONG TERM...HATTINGS AVIATION...AEM FIRE WEATHER...C.BAKER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 1042 AM MST SAT FEB 15 2014 WYZ001>020-022>030-161200- 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- 1042 AM MST SAT FEB 15 2014 ...WINTER WEATHER ADVISORY IN EFFECT FOR THE WESTERN MOUNTAINS FROM TONIGHT THROUGH SUNDAY... ...HIGH WIND WATCH IN EFFECT FOR THE CODY FOOTHILLS FROM TONIGHT THROUGH TOMORROW MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT ANOTHER POTENTIAL FOR HEAVY SNOWFALL IS EXPECTED IN THE TETON AND GROS VENTRE RANGE TONIGHT. PLEASE SEE THE WINTER WEATHER ADVISORY FOR DETAILS. HIGH WINDS ARE POSSIBLY IN THE FAVORED LOCATIONS IN CODY FOOTHILLS TONIGHT. PLEASE SEE THE HIGH WIND WATCH FOR DETAILS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SUNDAY...SIGNIFICANT SNOWFALL POSSIBLE MAINLY OVER THE TETON AND GROS VENTRE RANGES SUNDAY. STRONG TO POTENTIALLY DAMAGING WIND AT TIMES...MAINLY IN THE WIND CORRIDOR FROM ROCK SPRINGS TO CASPER...AS WELL AS THE EASTERN SLOPES OF THE ABSAROKA MOUNTAINS AND THE CODY FOOTHILLS ARE POSSIBLE MONDAY. TUESDAY NIGHT AND WEDNESDAY...SIGNIFICANT SNOWFALL POSSIBLE ACROSS THE WEST. THURSDAY NIGHT AND FRIDAY...A COLD STORM SYSTEM MAY BRING SIGNIFICANT SNOWFALL TO THE WEST AND STRONG WIND EAST OF THE DIVIDE. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS AND WIND SPEEDS OF AT LEAST 50 MPH. THANK YOU. TEAM RIVERTON
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Several wind gusts over 58 mph were recorded near Clark, including a maximum of 70 mph at 2343MST on the 15th and again at 0113MST on the 16th.
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, February 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: 489973.