2 high wind, as filed by the National Weather Service.
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 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 Dec 1, 2:30 PM MST, 1 hour 15 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
230 PM MST SAT DEC 1 2001
UPR LOW MVG INTO THE PAC NW W/ ASSOC SFC LOW OVR SRN BRITISH
COLUMBIA. INCRG H5-H3 MSTR IN ADVANCE OF UPR FEATURE...NOW
SPREADING ACRS THE FA. SVRL LOCALES ALREADY CLOSE TO OR BARELY
EXCEEDING HIGH WIND CRITERIA OVR WRN PARTS OF THE FA. SFC LOW CONTS
TO MOVE ACRS SRN CANADA TONIGHT-SUNDAY W/ DECENT SFC PRES FALLS OVR
MT. AT THE SAME TIME...120KT JET HEADS TOWARD CENTRAL WY...W/ FA
SITTING ON ANTICYCLONIC SIDE W/ PLENTY OF SINKING MOTION. SFC LOW
MAY BE A BIT TOO FAR NORTH FOR A PERFECT HIGH WIND SET-UP...BUT W/
WATCH ALREADY IN PLACE AND CURRENT OBS...I WL UPGRADE TO A HIGH WIND
WARNING FOR MTNS AND WRN AREAS THRU SUN. GRADIENT WEAKENS SOME AFT
18Z SUN...BUT GOOD MIXING W/ 120KT JET ENERGY OVERHEAD SHOULD
TRANSLATE TO STRONG WINDS INTO THE AFTN HRS. I WL ALSO MENTION
BLOWING AND DRIFTING SNOW IN THE HIGH WIND CORRIDOR...WHICH MAY END
UP BEING THE MAIN TRAVEL PROBLEM. COULD BE ANOTHER HIGH WIND SET-UP
SUNDAY NIGHT AND ERLY MONDAY...AS NEXT SFC LOW TRACKS FROM THE PAC
NW INTO SRN MT. NOT WANTING TO CONFUSE THE PUBLIC W/ TOO MANY WIND
HIGH LIGHTS FOR DIFFERENT PERIODS...I WL FOCUS ON THE WARNING
TONIGHT-SUNDAY...BUT WL MENTION PSBL STRONG WINDS SUNDAY NITE AND
MONDAY. THIS NEXT SYSTEM LOOKS A LITTLE MORE FAVORABLE FOR HIGH
WINDS BASED ON H7 HGT FIELDS / SFC PRES FALLS AND BETTER SFC LOW
POSITION. UPR TROF SHARPENS UP MON NITE/TUE AS COLD FRONT SWINGS
ACRS THE FA. COMBO OF FORCING W/ FRONT AND OROGRAPHICS ARND MTNS
SHOULD PROVIDE FOR AT LEAST SCT SNW SHWRS. ALL OF THE MODELS SHOW
SFC LOW DVLPG OVR ERN CO TUE AFTN...W/ SHORT PERIOD OF UPSLOPE OVR
SE WY. WL MENTION CHC POPS OVR THE PLAINS...BUT WL NOT HIT THINGS
TOO HARD ATTM. WL TREND HIGH TEMPS LWR THAN GUIDANCE OVR SNOW
COVERED AREAS...WHERE HIGHS TODAY HAVE AVERAGED 5-10 DEGF BELOW
GUIDANCE.
.EXTENDED...PROGRESSIVE UPPER LEVEL PATTERN WITH A SHARP TROUGH OVER
REGION WED FOR CHANCE SNOW SHOWERS. UPPER TROUGH AXIS WILL MOVE
EAST THU WITH CONTINUING CYCLONIC CIRCULATION WARRANTING CHANCE
LINGERING SNOW SHOWERS. FAST NORTHWEST FLOW FRI WITH DOWNSLOPE
COMPONENT KEEPING THINGS DRY WITH MODERATING TEMPERATURES. FLOW
WILL BACK TO ZONAL SAT WITH DRY AND SEASONAL WEATHER. WINDY
CONDITIONS WILL BE THE DOMINANT FACTOR THROUGH THE EXTENDED PERIOD.
.CYS...
WY...HIGH WIND WARNING SOUTH CENTRAL AND MOUNTAINS TONIGHT AND
SUNDAY. ZONES 61>64..66.
NE...NONE.
JK/JMR2 high wind. Local standard time, as filed.
Very strong winds blew across the mountains of southeast Wyoming. Gusts to 83 mphwere recorded on Interstate 80 near Arlington, WY, while gusts to 66 mph were recordedat Esterbrook, WY.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2001Every state in 2001This day in weather historyWarnings in Wyoming, December 2001
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: 5273967, 5273968.