Very strong gap winds developed between Chugwater and Wheatland in southeast Wyoming. West winds frequently gusted between 60 and 70 mph for several hours.
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The episode as NWS CYS wrote it up.
Very strong gap winds developed between Chugwater and Wheatland in southeast Wyoming. West winds frequently gusted between 60 and 70 mph for several hours.
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 Jan 24, 2:39 AM MST, 1 hour 16 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 239 AM MST SAT JAN 24 2015 .SHORT TERM...(TODAY THROUGH MONDAY NIGHT) ISSUED AT 139 AM MST SAT JAN 24 2015 WEST WINDS HAVE REALLY STARTED TO RAMP UP IN THE BORDEAUX AREA THIS MORNING. RECENT HIGHWAY OBSERVATIONS HAVE ALREADY SHOWN A FEW GUSTS APPROACHING 55 MPH WITH SUSTAINED WINDS HOVERING AROUND 40 MPH. THIS IS A BIT EARLIER THAN EXPECTED AS GRADIENTS ARE NOT EXPECTED TO PEAK UNTIL LATER THIS AM. THE NAM H85 CAG-CPR GRADIENT CONTINUES TO CLIMB THROUGH THE MORNING WITH A MAX OF 64 METERS AROUND 12Z. WEST-TO-EAST ORIENTED LLVL GRADIENTS MORE FAVORABLE FOR BORDEAUX REACH THEIR PEAK AROUND 18Z. EXPECT SUBSIDENCE TO GRADUALLY INCREASE THROUGH THE AFTN IN THE RFQ OF A 130 KT H25 JET SHIFTING INTO WESTERN NE. STILL SOME QUESTIONS AS MODELED DOWNWARD H85-H5 OMEGA NEVER SPREADS FAR ENOUGH EAST TO ENCOMPASS BORDEAUX...BUT BELIEVE CURRENT WINDS WOULD BE LESS IF THIS WAS A MAJOR INHIBITING FACTOR. WENT AHEAD AND ISSUED A HIGH WIND WARNING FOR BORDEAUX AS 50-55 KT FLOW ALOFT IS PROGGED TO STAY INTACT ALONG WITH GRADIENTS ONLY GETTING STRONGER. OTHER WIND PRONE AREAS WILL BE WINDY AS WELL...BUT GENERALLY EXPECT GUSTS TO BE A BIT LESS WITH AN UNFAVORABLE ORIENTATION OF HEIGHT/MSLP GRADIENTS. WILL NEED TO WATCH THE SOUTH LARAMIE RANGE THIS AFTERNOON AS MIXING COULD TAP INTO STRONGER FLOW ALOFT BEFORE CLOUDS INCREASE. MAV GUIDANCE AS WELL AS GFS BUFKIT SOUNDINGS ARE A BIT CONCERNING FOR THE INTERSTATE 80 CORRIDOR OVER THE PLAINS AS WELL WITH 40 TO 50 KT FLOW AT THE TOP OF THE MIXED LAYER AROUND MID AFTN. INCREASED WINDS...BUT DID NOT GO AS STRONG AS THE GFS WOULD SUGGEST AS CLOUDS COULD AFFECT LLVL LAPSE RATES. LATEST WATER VAPOR SATELLITE LOOP WAS INDICATIVE OF A STRONG MIDLVL SHORTWAVE OVER ALBERTA/BRITISH COLUMBIA AT 09Z. GFS/NAM/ECMWF ARE IN GOOD AGREEMENT WITH THIS FEATURE DEEPENING CONSIDERABLY AS IT DIVES INTO NORTHERN NE BY 00Z SUN. THIS WILL ALSO DRIVE A WEAK COLD FRONT ACROSS SOUTHEAST WY AND THE WESTERN NE PANHANDLE THIS AFTN. STILL A FEW QUESTIONS WITH JUST HOW STRONG THIS FRONT WILL BE...AND WHETHER IT WILL BE CAPABLE OF GENERATING WIDESPREAD SHOWERS. 00Z NAM SHOWS VERY LITTLE IN THE WAY OF QPF...WHILE THE THE GFS AND ECMWF PAINT A BAND OF VERY LIGHT QPF WITH GOOD FRONTOGENESIS. WILL SIDE TOWARD THE GFS AS PLENTY OF MID AND HIGH LEVEL MOISTURE IS EVIDENT UPSTREAM ON SATELLITE IMAGERY. ENOUGH CONFIDENCE TO BUMP UP POPS FOR ALL AREAS EAST OF THE LARAMIE RANGE THIS AFTERNOON. IN EITHER CASE...THIS WILL BE LOW IMPACT AS PRECIPITATION SHOULD BE RAIN WITH THE WARM THERMAL ENVIRONMENT IN PLACE OVER THE CWA. THE MODELS SUGGEST HIGH-AMPLITUDE RIDGING ENCOMPASSING MUCH OF THE WESTERN CONUS ON SUN AND MON. LARGE SCALE SUBSIDENCE AND VERY WARM TEMPERATURES ALOFT SUGGESTS A RECORD HIGHS COULD BE THREATENED ON MON. H7 TEMPS COULD APPROACH 5-6 DEG C AND MOST MOS GUIDANCE STILL SUGGESTS WIDESPREAD HIGHS IN THE MID 60S OVER THE PLAINS...SO EXPECT A VERY WARM AND PLEASANT DAY. A POSSIBLE LIMITING FACTOR FOR TEMPS WILL BE ANY HIGH CLOUDS THAT MAY ACCOMPANY THE RIDGE AXIS...BUT GFS H25 RH PROGS DO NOT SUGGEST THICKER CIRRUS UNTIL WELL BEYOND PEAK HEATING. CONTINUED TO TREND WARMER FOR HIGHS ON MON. .LONG TERM...(TUESDAY THROUGH FRIDAY) ISSUED AT 300 AM MST SAT JAN 24 2015 PRETTY NICE DAY TUESDAY WITH A RIDGE OF HIGH PRESSURE OVERHEAD. 700MB TEMPERATURES REMAIN WARM...GFS SHOWING +6 TO +7C...ECMWF A LITTLE COOLER WITH +5C. REGARDLESS...TUESDAY SHOULD BE WARM AND DRY WITH WIDESPREAD 60S EAST OF THE LARAMIE RANGE AND LOW TO MID 50S WEST. DID GO A LITTLE HIGHER THAN GUIDANCE ON TEMPERATURES. GOING TO BE WINDY WEST WITH 700MB WINDS 40 TO 45KTS...SO DOWNSLOPING OFF THE LARAMIE RANGE SHOULD HELP WITH WARMER TEMPERATURES. HAVE A SHORTWAVE TROUGH MOVING INTO THE AREA TUESDAY NIGHT THAT SHOULD BEGIN TO COOL THINGS OFF. GFS 700MB TEMPERATURES FALL TO -2 TO -4C WEDNESDAY AFTERNOON. GFS DRY WITH THE ASSOCIATED COLD FRONT MOVING THROUGH WHILE THE ECMWF HAS FAIRLY WIDESPREAD QPF OFF TO THE WEST IN CARBON AND ALBANY COUNTIES. DID INCREASE POPS OUT WEST AND IN THE MOUNTAINS. SOMETHING TO WATCH FOR...THE GFS HITTING US PRETTY HARD FOR THURSDAY NIGHT/FRIDAY WITH A POTENT SHORTWAVE MOVING IN FROM THE NORTHWEST. QUICK MOVING THOUGH WITH PRECIP ENDING BY SATURDAY MORNING. ECMWF HAS THIS SHORTWAVE PASSING OFF TO THE NORTH AND EAST OF OUR CWFA. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z SATURDAY NIGHT) ISSUED AT 1055 PM MST FRI JAN 23 2015 VFR CONDITIONS WILL PREVAIL AT AREA TERMINALS THRU THE PERIOD. THE ONLY EXCEPTION WILL BE AT KRWL WHERE MVFR CIGS ARE EXPECTED AFTER 22Z. EXPECT A MOSTLY CLEAR OVERNIGHT PERIOD WITH JUST SOME THIN CIRRUS CLOUDS PASSING THRU. NORTHWEST WINDS WILL BECOME BREEZY AGAIN AFTER 14Z ON SATURDAY WITH GUSTS OF 25-35 KNOTS EXPECTED. THERE WILL BE A FEW ISOLATED AFTERNOON SHOWERS POSSIBLE THIS AFTERNOON KBFF...KCDR AND KAIA. TOO ISOLATED TO GET SPECIFIC WITH TIMING OR LOCATION NOW...SO HAVE TRENDED TAFS INTO VCSH. && .FIRE WEATHER... ISSUED AT 139 AM MST SAT JAN 24 2015 NO MAJOR FIRE WEATHER CONCERNS. GUSTY WINDS ARE EXPECTED ACROSS MUCH OF THE AREA THIS WEEKEND...BUT ALL OTHER PARAMETERS ARE EXPECTED TO BE NON-CRITICAL. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...HIGH WIND WARNING UNTIL 5 PM MST THIS AFTERNOON FOR WYZ106. NE...NONE. && SHORT TERM...CLH LONG TERM...GCC AVIATION...GCC FIRE WEATHER...CLH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 320 AM MST SAT JAN 24 2015 NEZ002-003-019>021-054-055-095-096-251030- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 320 AM MST SAT JAN 24 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...TODAY AND TONIGHT WEST TO NORTHWEST WINDS OF 20 TO 30 MPH SUSTAINED WITH GUSTS TO 40 MPH ARE POSSIBLE THROUGH THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. WYZ101>119-251030- 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- 320 AM MST SAT JAN 24 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT WEST TO NORTHWEST WINDS OF 30 TO 40 MPH WITH GUSTS TO 50 MPH ARE LIKELY TODAY FOR THE WIND PRONE AREAS OF SOUTHEAST WYOMING AS WELL AS LARAMIE COUNTY. FOR INTERSTATE 25 NEAR BORDEAUX...WIND GUSTS TO 60 MPH ARE LIKELY. A HIGH WIND WARNING IS IN EFFECT THROUGH 5 PM THIS AFTERNOON FOR THE BORDEAUX AREA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NORTHWEST WINDS GUSTING TO 50 MPH WILL CONTINUE INTO SUNDAY. STRONG WINDS RETURN TO THE AREA TUESDAY NIGHT INTO WEDNESDAY WITH WEST WINDS GUSTING IN EXCESS OF 50 MPH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
211 AM MST SAT JAN 24 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 AM NON-TSTM WND GST BORDEAUX 41.95N 104.95W
01/24/2015 M56 MPH PLATTE WY DEPT OF HIGHWAYS
SUSTAINED WINDS OF 33 TO 45 MPH OVER THE PAST HOUR.
&&
GCLAYCOMThe national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
The WYDOT sensor at Bordeaux measured wind gusts of 58 mph or higher, with a peak gust of 69 mph at 24/0735 MST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2015Every state in 2015This day in weather historyWarnings in Wyoming, January 2015
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: 554241.