Strong winds aloft combined with a tightening pressure gradient ahead of an approaching area of low pressure to produce strong wind gusts in the foothills of the Absaroka Range. The strongest winds were near Clark where frequent gusts in excess of 60 mph occurred for about nine hours.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS RIW wrote it up.
Strong winds aloft combined with a tightening pressure gradient ahead of an approaching area of low pressure to produce strong wind gusts in the foothills of the Absaroka Range. The strongest winds were near Clark where frequent gusts in excess of 60 mph occurred for about nine hours. A peak speed of 83 mph was recorded west of Clark at 1206MST.
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 Oct 25, 2:25 PM MST, 14 hours 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 325 PM MDT SAT OCT 25 2014 .SHORT TERM...TONIGHT THROUGH SUNDAY THE LEAD VORT LOBE WITHIN THE APPROACHING TROUGH NOW OVER IDAHO WILL APPROACH THE CWA TONIGHT AND TRACK ACROSS THE AREA SUNDAY. THE PRESSURE GRADIENT WILL INCREASE AS IT DOES. IT WILL GET WINDY AS A RESULT. NOW TO DECIPHER WHERE...WHEN AND HOW STRONG. AS FAR AS ANY MTN WAVE POTENTIAL...LOCAL WRF CROSS SECTIONS INDICATE THAT 60 KNOT WINDS WILL SURFACE ONTO THE CODY FOOTHILLS ALONG WITH A MTN WAVE SIGNATURE...ALBEIT WITHOUT A CRITICAL LAYER. THERE IS A FROUDE NUMBER CLOSE TO ONE CORRELATING WITH THE FAVORED TIME FRAME LATE TONIGHT. AS FAR AS ANY CONTRIBUTION TO GAP FLOW...H7 WRF TEMP GRADIENT NOT OVERLY IMPRESSIVE FROM YNP TO THE CODY FOOTHILLS. SO WILL GO AHEAD AN UPGRADE THE HIGH WIND WATCH FOR ZONES 2 AND 3 TO A LOW END WARNING. THE OVERALL GRADIENT AT THE SFC TO H7 IS NOT THAT TIGHT BUT BL WINDS ARE PROGGED TO BE 35 KNOTS FROM THE GREEN MTNS TO CASPER SUNDAY SO THESE WINDS WILL PROBABLY BE SPS WORTHY...ESPECIALLY FOR PLACES LIKE OUTER DRIVE JUST SOUTH OF CASPER FOR SUNDAY. IN ADDITION...UNLIKE THE LAST EVENT...THERE WILL BE NO SIGNIFICANT HOOK UP WIND COMPONENT FROM RIGHT FRONT QUAD JET DYNAMICS TO DRAW THE STRONGER WINDS ALOFT TO THE SFC SO THE WINDS ALONG THE SOUTHERN WIND CORRIDOR SHOULD NOT GET TOO CRAZY. THE INCREASING VEERING WSW FLOW WILL INCREASE UPSLOPE POTENTIAL COMBINED WITH WEAK INSTABILITY WEST OF THE DIVIDE TONIGHT AND SUNDAY AND WILL RESULT IN INCREASING RAIN AND SNOW SHOWERS ALONG WITH SOME UPSLOPE IN THE BIG HORN MTNS. WITH THE SNOW LEVEL DROPPING TO 7000 FEET IN THE BIG HORN MTNS SUNDAY WITH RAIN TURNING TO MOSTLY ALL SNOW BY LATE AFTERNOON IN THE WEST. MOST SNOW ACCUMULATIONS WILL BE RELATIVELY LIGHT BEFORE INCREASING AFTER SUNSET CLOSER TO THE TIME OF THE TROUGHPA WITH ELEVATIONS ABOVE 10K SEEING AN INCH OR TWO BY SUNSET SUNDAY. TEMPERATURES SUNDAY WILL RUN ROUGHLY 10 DEGREES COOLER THAN TODAY GIVEN THE COLD AIR ADVECTION WITH THE TROUGH...ADDED CLOUDS AND SHOWERS. .LONG TERM...SUNDAY NIGHT THROUGH SATURDAY A PASSING WAVE OF LOW PRESSURE WILL KEEP SHOWERS...RAIN AND SNOW...OVER THE WESTERN MOUNTAINS AND VALLEYS SUNDAY NIGHT...WHICH WILL LINGER INTO MONDAY MORNING. COOLING TEMPERATURES WILL BE ANTICIPATED WITH MUCH COOLER H7 TEMPERATURES ASSOCIATED WITH THE PASSAGE OF THE TROUGH. THE TROUGH AXIS WILL PASS THROUGH THE CWA BY MONDAY AFTERNOON...WITH BUILDING NORTHWEST FLOW ANTICIPATED OVER THE AREA. LINGERING MOISTURE WILL KEEP SOME SHOWER ACTIVITY ACROSS THE WESTERN AND NORTHERN MOUNTAINS INTO TUESDAY MORNING. A FLATTENED RIDGE OF HIGH PRESSURE WILL MOVE OVER THE AREA BY TUESDAY AFTERNOON...WITH GENERALLY DRY CONDITIONS EXPECTED. THIS TRANSITORY RIDGE WILL BE SHORT LIVED AS ANOTHER SWATH OF MOISTURE MOVES THROUGH THE INTERMOUNTAIN WEST TUESDAY AFTERNOON AND EVENING. MODELS SHOW THAT MOISTURE COULD BE STALLED FROM REACHING NORTHWESTERN WYOMING UNTIL LATE WEDNESDAY MORNING...THOUGH SOME ISOLATED ACTIVITY MAY BE AROUND EARLIER. A FEW SHOWERS WILL BE POSSIBLE WEDNESDAY AFTERNOON...BUT THE PRESENCE OF SHOWER ACTIVITY WILL BE SHORT LIVED. A RIDGE OF HIGH PRESSURE WILL AMPLIFY OVER THE AREA ON THURSDAY...HELPING TO TAPER OFF LINGERING SHOWERS...AND PROVIDING THE POTENTIAL FOR WARMING TEMPERATURES FOR THE HOLIDAY WEEKEND. THE RIDGE OF HIGH PRESSURE REMAINS OVER THE AREA THROUGH SATURDAY EVENING...WITH ANOTHER WAVE OF LOW PRESSURE MOVING THROUGH THE WESTERN UNITED STATES...POTENTIALLY IMPACTING THE STATE SUNDAY AFTERNOON AND INTO MONDAY. && .AVIATION.../00Z ISSUANCE/ VFR CONDITIONS UNDER SKC CONDITIONS ARE EXPECTED THROUGH 00Z. BREEZY TO WINDY SOUTH TO SOUTHWEST WIND IN TYPICAL AREAS...WITH AN APPROACH OF A STORM SYSTEM. AFTER 00Z...AREAS WEST OF THE DIVIDE WILL SEE QUICKLY INCREASING MID LEVEL CLOUDINESS WITH SOME SHOWER ACTIVITY POSSIBLE AFTER 03Z. MOUNTAIN TOPS WILL BECOME OBSCURED OVER THE FAR WEST BETWEEN 03Z AND 06Z. SOME MVFR CONDITIONS COULD OCCUR IN OR NEAR THIS CONVECTION. HOWEVER OF MORE CONCERN...WILL BE CONSIDERABLE MOUNTAIN TURBULENCE TONIGHT...AS WELL AS LLWS ON THE LEE SIDE OF MOUNTAIN RANGES...ESPECIALLY AT COD AND LND. PLEASE SEE THE AVIATION WEATHER CENTER FOR THE LATEST INFORMATION ON TURBULENCE FORECASTS. && .FIRE WEATHER... FIRE DANGER WILL BE ELEVATED FOR THE REST OF THIS AFTERNOON...MAINLY IN THE LEE OF THE MOUNTAIN RANGES OVER THE BASINS EAST OF THE DIVIDE AS MINIMUM RH VALUES ACROSS THESE AREAS FALL INTO THE LOW TEENS WHILE WINDS INCREASE OUT OF THE SOUTHWEST TO 15 TO 25 MPH WITH GUSTS OF 25 TO TO 50 MPH AT TIMES. SUNDAY...MOISTURE WILL INCREASE ACROSS THE ENTIRE REGION WITH A BETTER CHANCE FOR SHOWERS ACROSS THE WEST AND NORTH...LOWERING FIRE DANGER ONCE AGAIN. && .RIW WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING FROM MIDNIGHT TONIGHT TO NOON MDT SUNDAY WYZ002-003. && SHORT TERM...LIPSON LONG TERM...BRANHAM AVIATION...LIPSON/WM FIRE WEATHER...LIPSON
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</html>The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The CWOP weather sensor 5 miles WNW of Clark recorded several wind gusts past 58 mph with a maximum wind gust of 83 mph at 1206MST.
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, October 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 2026-09-30. Each event’s entry at NCEI: 542057.