A tight low level pressure gradient ahead of a southward moving cold front produced strong west winds with gusts to around 70 mph through the wind corridors of southeast Wyoming.
Every event with a place to put it; 9 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 CYS wrote it up.
A tight low level pressure gradient ahead of a southward moving cold front produced strong west winds with gusts to around 70 mph through the wind corridors of southeast Wyoming.
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 Cheyenne, WY wrote its last area forecast discussion before the first event at Nov 6, 9:59 PM MST, 2 hours 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 959 PM MST THU NOV 6 2014 .SHORT TERM...(THIS EVENING THROUGH SATURDAY NIGHT) ISSUED AT 315 PM MST THU NOV 6 2014 MAIN FORECAST CONCERN OVER THE NEXT 48 HOURS WILL BE HIGH WINDS ASSOCIATED WITH A CANADIAN COLD FRONT AND ASSOCIATED UPPER LEVEL DISTURBANCE PUSHING SOUTHWARD ACROSS THE HIGH PLAINS LATE TONIGHT AND INTO FRIDAY. AHEAD OF THIS SYSTEM...A LEE SIDE TROUGH IS DEVELOPING LATE THIS AFTERNOON ACROSS THE GREAT PLAINS WITH OBS SHOWING STEADY PRESSURE FALLS OF 4 TO 7 MB THE LAST 3 HOURS. THIS WILL CONTINUE INTO TONIGHT WITH STRENGTHENING WINDS ALOFT SHOWN BY ALL MODELS. THE 700MB GRADIENT PEAKS BETWEEN 06Z TO 12Z ACROSS THE AREA AS WELL. THEREFORE...STRONG WINDS ARE ANTICIPATED OVER PORTIONS OF SOUTHEAST WYOMING BEGINNING LATE THIS EVENING AHEAD OF THE COLD FRONT. WINDS MAY GUST AS HIGH AS 65 MPH BY MIDNIGHT ACROSS THE WIND PRONE AREAS ALONG I25 AND I80. MODELS DO INDICATE STRONG 60 KNOTS WINDS AT 700 MB ALONG WITH GOOD SUBSIDENCE. EVENT APPEARS TO BEGIN AS A GAP WIND EVENT AND THEN SLOWLY TRANSITION TO A BORA-TYPE EVENT DURING AND AFTER FROPA. HOWEVER...DO NOT BELIEVE WINDS WILL BE AS STRONG AFTER THE FRONT PUSHES THROUGH THE AREA. ISSUED A HIGH WIND WARNING FOR THE WIND PRONE AREAS TO REPLACE THE WATCH. OUTSIDE OF THESE AREAS...WINDS WILL STILL BE GUSTY IN LOCATIONS ALONG AND WEST OF THE LARAMIE RANGE INCLUDING CHEYENNE AND LARAMIE BUT GUSTS SHOULD REMAIN BELOW 50 MPH. WINDS WILL ALSO INCREASE ACROSS THE HIGH PLAINS OF WESTERN NEBRASKA ON FRIDAY BEHIND THE FRONT...WITH GUSTS AROUND 40 MPH POSSIBLE. THOUGHT ABOUT ISSUING A WIND ADVISORY FOR PORTIONS OF THE WESTERN NEBRASKA PANHANDLE FOR FRIDAY...BUT MODELS NOT IN GOOD AGREEMENT ON WIND SPEEDS. GFS MOS GUIDANCE INDICATES SUSTAINED WINDS BETWEEN 25 TO 30 KNOTS AROUND SIDNEY...BUT THE GFS AND NAM SOUNDINGS DO NOT SUPPORT SUCH HIGH WINDS...SO HELD OFF ON THE ADVISORY FOR NOW. HIGH TEMPERATURES WILL REMAIN MILD ON FRIDAY EARLY...WITH HIGHS IN THE MID 50S TO MID 60S. TEMPERATURES WILL GRADUALLY LOWER INTO THE 40S AND LOW 50S BY MID AFTERNOON AS THE FRONT PUSHES SOUTHWARD. THE UPPER LEVEL DISTURBANCE WILL PUSH ACROSS THE FORECAST AREA LATE FRIDAY AND INTO FRIDAY NIGHT. WINDS WILL GRADUALLY DIMINISH...BUT PREVIOUS MODELS DID INDICATE SOME LIGHT RAIN/SNOW ACTIVITY DEVELOPING AND MOVING SOUTHWARD ACROSS THE AREA...MAINLY DUE TO LOW TO MIDLEVEL INSTABILITY. HOWEVER...THE NEW 12Z RUNS ARE MUCH DRIER WITH ONLY SOME LIGHT SPRINKLES AND FLURRIES ACROSS THE MOUNTAINS AND THE LARAMIE RANGE. THIS IS MOSTLY DUE TO HIGHER LLVL STABILITY THAT CURRENT MODELS ARE SHOWING. CONTINUED TO LOWER POP SLIGHTLY WITH VALUES AROUND 20 PERCENT FRIDAY EVENING. NORTHWEST FLOW WILL CONTINUE ON SATURDAY WITH HIGH TEMPERATURES IN THE 50S ACROSS THE AREA. SLIGHTLY WARMER TEMPERATURES ARE EXPECTED NEAR THE LARAMIE RANGE DUE TO LOCALIZED DOWNSLOPE FLOW. .LONG TERM...SUNDAY THROUGH WEDNESDAY... MAJOR CHANGES ARE STILL EXPECTED IN THE EXTENDED PERIOD TO A MUCH COLDER AND MORE UNSETTLED PATTERN. ZONAL FLOW ALOFT WILL STRENGTHEN ON SUNDAY IN ADVANCE OF STRONG SHORTWAVE DROPPING INTO IDAHO. PRESSURE FALLS WILL OCCUR DURING THE DAY TO THE EAST OF THE LARAMIE RANGE AND WITH THE CAG-CPR GRADIENT AROUND 50 METERS...MAY SEE SOME MARGINAL HIGH WIND CONDITIONS IN THE WIND PRONE AREAS. ONE MORE MILD DAY ON SUNDAY BEFORE THE CHANGES ARRIVE ON MONDAY. MODEL AGREEMENT IS GOOD AT SHOWING A STRONG SHORTWAVE MOVING FROM IDAHO INTO WYOMING ON MONDAY. COLD FRONTAL PASSAGE IS SOMETIME DURING THE MORNING TO EARLY AFTERNOON DEPENDING ON THE MODEL. MUCH OF THE CWA IS IN THE LEFT EXIT REGION OF THE UPPER JET WITH THE LARGEST QPF AMOUNTS STRETCHING FROM CONVERSE COUNTY INTO THE NORTHERN PANHANDLE...IN THE REGION OF BEST Q-VECTOR CONVERGENCE. AREAS ALONG THE COLORADO BORDER WILL LIKELY SEE LESSER AMOUNTS. PRECIP WILL COME TO AN END BY MON EVENING...SO IT IS A RELATIVELY QUICK 6-9 HR SHOT OF SNOW...WHICH WILL TEND TO LIMIT AMOUNTS. TEMPS WILL CONTINUE TO BE VERY COLD (AROUND 20 DEGREES BELOW NORMAL) THROUGH MIDWEEK AS BOTH THE GFS AND ECMWF DONT SHOW 700MB TEMPS GETTING MUCH ABOVE -8C. A WEAKER SHORTWAVE WILL MOVE TO THE NORTHEAST OF THE CWA ON TUES NIGHT AND WED TO REINFORCE THE COLD AIRMASS AND HIGHER PRESSURES OVER THE PLAINS. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z FRIDAY NIGHT) ISSUED AT 958 PM MST THU NOV 6 2014 VFR CONDITIONS EXPECTED WITH INCREASING WEST TO SOUTHWEST WINDS. STRONG WINDS EXPECTED BEGINNING AT KLAR AND KCYS AS EARLY AS 08Z AND COULD SPREAD OUT INTO THE PANHANDLE AIRPORTS LATE MORNING FRIDAY. && .FIRE WEATHER... ISSUED AT 156 PM MST THU NOV 6 2014 NO FIRE WEATHER CONCERNS THROUGH EARLY NEXT WEEK WITH RECENT PRECIPITATION...COOL TEMPERATURES AND MINIMUM HUMIDITIES ABOVE 25 PERCENT. ANOTHER PERIOD OF STRONG GUSTY WINDS ARE EXPECTED OVER SOUTHEAST WYOMING AHEAD OF A COLD FRONT TONIGHT AND INTO FRIDAY WHERE GUSTS AROUND 60 MPH ARE POSSIBLE...MAINLY OVER PORTIONS OF SOUTHEAST WYOMING. OTHERWISE...MUCH COLDER TEMPERATURES ARE POSSIBLE NEXT WEEK AS THE FIRST ARCTIC COLD FRONT OF THE SEASON PUSHES SOUTHWARD INTO THE GREAT PLAINS. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...HIGH WIND WARNING UNTIL 11 AM MST FRIDAY FOR WYZ106-110-116-117. NE...NONE. && SHORT TERM...TJT LONG TERM...ZF AVIATION...GCC FIRE WEATHER...TJT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 840 PM MST THU NOV 6 2014 WYZ101>119-080345- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 840 PM MST THU NOV 6 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TONIGHT WEST WINDS WILL INCREASE LATE THIS EVENING AHEAD OF AN UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT MOVING SOUTHEAST ACROSS WYOMING. SUSTAINED WESTERLY WINDS BETWEEN 30 TO 45 MPH WITH GUSTS AS HIGH AS 65 MPH ARE EXPECTED...MAINLY ACROSS THE WIND PRONE AREAS INCLUDING ARLINGTON...BORDEAUX AND VEDAUWOO. A HIGH WIND WARNING IS IN EFFECT FOR THESE AREAS THROUGH THE OVERNIGHT HOURS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY STRONG AND GUSTY WEST WINDS WILL CONTINUE FRIDAY MORNING THEN DIMINISH DURING THE AFTERNOON. HIGH WINDS WILL BE POSSIBLE ON SUNDAY FOR MUCH OF SOUTHEAST WYOMING IN ADVANCE OF A STRONGER COLD FRONT. MUCH COLDER TEMPERATURES AND WINTRY PRECIPITATION ARE EXPECTED EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT. NEZ002-003-019>021-054-055-095-096-080345- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 840 PM MST THU NOV 6 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY MUCH COLDER TEMPERATURES AND WINTRY PRECIPITATION ARE EXPECTED EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT.
The national radar mosaic for the moment the first event began.
9 high wind. Local standard time, as filed.
The WYDOT sensor at Arlington measured a peak wind gust of 58 mph.
The UPR sensor at Buford measured sustained winds of 40 mph or higher.
The UPR sensor at Emkay measured wind gusts of 58 mph or higher, with a peak gust of 70 mph at 07/0445 MST.
The WYDOT sensor at Halleck Ridge measured sustained winds of 40 mph or higher.
The UPR sensor at Buford measured a peak wind gust of 65 mph.
The WYDOT sensor at Bordeaux measured sustained winds of 40 mph or higher.
The WYDOT sensor at Strouss Hill measured a peak wind gust of 65 mph.
The UPR sensor at Buford measured wind gusts of 58 mph or higher, with a peak gust of 71 mph at 07/0730 MST.
The WYDOT sensor at Pumpkin Vine measured sustained winds of 40 mph or higher.
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, November 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: 545380, 545385, 545382, 545383, 545386, 545387, 545389, 545390, 545391.