Wind gusts measuring 60 to 70 knots (70 to 80 mph) were recorded by Remote Automated Weather Stations and other automated equipment on the night of the 9th through the afternoon of the 10th. One mobile home was significantly damaged after it rolled while in transport along Highway 220 southwest of Casper.
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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.
Wind gusts measuring 60 to 70 knots (70 to 80 mph) were recorded by Remote Automated Weather Stations and other automated equipment on the night of the 9th through the afternoon of the 10th. One mobile home was significantly damaged after it rolled while in transport along Highway 220 southwest of Casper.
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 Jan 9, 3:25 PM MST, 5 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 325 PM MST MON JAN 9 2006 .SHORT TERM...TONIGHT THROUGH THURSDAY... UPDATE...RECEIVED REPORT FROM CLARK OF 40 TO 45 MPH SUSTAINED WINDS WITH GUSTS TO 55 MPH. EXPECT THESE WINDS TO CONTINUE THROUGH THE NIGHT AND TAPER OFF BETWEEN 15 AND 19Z TOMORROW WHEN MOUNTAIN TOP INVERSION RELAXES. STARTING TO SEE CAMP CREEK AND FALES ROCK RAWS GUSTING HIGH WIND...SO WILL BEGIN THEIR WARNING AT 9 PM AS WELL. AT THIS POINT...WILL PUSH NATRONA COUNTY WATCH UP UNTIL 5 AM TUESDAY AS THIS IS WHEN GRADIENT AND H7 WINDS MORE FAVORABLE. ANOTHER MAJOR WINTER STORM TO IMPACT THE WEST TUESDAY AFTERNOON THROUGH WEDNESDAY. BEFOREHAND...LEE TROUGH STRENGTHENING AS SHORTWAVE MOVING ACROSS ALBERTA CRASHES DOWN RIDGE THAT BROUGHT SHORT-LIVED SUNSHINE AND LIGHT WINDS TO THE AREA. INCREASING WESTERLY FLOW ALOFT AHEAD OF STRONG PACIFIC JET WILL PROVIDE SETUP FOR POSSIBLE DOWNSLOPE WINDSTORM IN CODY AREA TUESDAY MORNING. SUCCESSIVE MODEL RUNS MORE IMPRESSIVE OVER THIS AREA TUESDAY MORNING CHURNING OUT A FROUDE AROUND 1.0 WITH BUFKIT INVERSION TOP WINDS OVER 60 KNOTS...SO COULD EASILY SEE WIND GUSTS TO 80 MPH ALONG THE CODY FOOTHILLS. HAVE BACKED OFF A FEW HOURS ON HIGH WIND WATCH WITH BEST SETUP CENTERED BETWEEN 12Z AND 15Z. OTHER AREA OF HIGH WIND CONCERN WILL BE SOUTH CENTRAL FROM BEAVER RIM AREA TO CASPER LATE TONIGHT AND TUESDAY WITH HIGHEST WIND SPEEDS EXPECTED IN THIS AREA TUESDAY AFTERNOON. BACK TO WHAT HAS BEEN THE NORM FOR THE WEST AS OF LATE...ANOTHER SUSTAINED PERIOD OF SNOWFALL ON THE WAY TUESDAY AFTERNOON THROUGH WEDNESDAY. ON 295K SURFACE...ISENTROPIC LIFT AND CONDENSATION PRESSURE DEFICITS LESS THAN 5MB KICK IN TUESDAY AFTERNOON WHEN SNOWFALL TO SPREAD ACROSS THE WEST. TEMPERATURES WILL BE INITIALLY WARM WITH BACKING FLOW ADVECTING -4C 700 MB ISOTHERM INTO AREA. SO INITIALLY WET SNOW OR A RAIN AND SNOW MIX WILL BEGIN IN VALLEYS WITH HEAVIER ACCUMULATING SNOW IN THE MOUNTAINS TUESDAY AFTERNOON. PACIFIC COLD FRONT WILL MOVE ACROSS AREA LATE WEDNESDAY WITH A TRANSITION FROM WARM CONVEYOR BELT PRECIPITATION TO SNOW SHOWERS BEFORE TAPERING OFF WEDNESDAY NIGHT. EXPECTING WARNING CRITERIA TO BE A GOOD POSSIBILITY WITH 12 TO 18 INCHES IN THE WESTERN MOUNTAINS WITH 6 TO 10 IN THE STAR VALLEY...JACKSON HOLE AND PINEDALE AREAS. THE NORTHWEST CORNER OF WYOMING INCLUDING YELLOWSTONE NATIONAL PARK LOOK TO BE ON TRACK FOR ADVISORY AMOUNTS OF 6 TO 12 INCHES. MAIN PACIFIC TROUGH TO DIVE SOUTHEAST ACROSS IDAHO INTO THE CENTRAL ROCKIES TAKING A SIMILAR PATH AS STORM SYSTEM ON SUNDAY. MODELS TYPICALLY HAVE TROUBLE WITH LOW LEVEL FRONTOGENESIS AND PLACEMENT OF QPF EAST OF THE DIVIDE IN THESE SCENARIOS AND HAVE OPTED TO LET THE PAST BE THE BEST GUIDE...WITH CONVERGENCE AND PRECIPITATION DEVELOPING OVER CENTRAL WYOMING WEDNESDAY NIGHT AND PUSHING SOUTH THURSDAY BEFORE TAPERING OFF. .LONG TERM...THURSDAY NIGHT THROUGH MONDAY... EXTENDED FORECAST CONTINUES VERY PROGRESSIVE PATTERN WITH ZONAL FLOW OVER THE EASTERN PACIFIC THROUGH THE NORTHERN PLAINS. THIS WILL BRING A SERIES OF FAST MOVING LOW PRESSURE TROUGHS AND ASSOCIATED PACIFIC COLD FRONTS...AND WEAK HIGH PRESSURE RIDGES THROUGH WYOMING. FRIDAY SHOULD SEE PRECIPITATION LIMITED TO THE FAR WEST. THE PRECIPITATION WILL INCREASE IN THE WESTERN MOUNTAINS ON SATURDAY AHEAD OF ANOTHER LOW PRESSURE TROUGH AND COLD FRONT THAT WILL SPREAD MORE PRECIPITATION EAST OF THE DIVIDE SUNDAY AND SUNDAY NIGHT. THERE SHOULD BE ENOUGH MOISTURE IN THE FLOW FOR MOUNTAIN SHOWERS ON MONDAY WITH SOME SHOWERS IN NORTHWEST FLOW EAST OF THE DIVIDE AS WELL. WINDS WILL REMAIN RATHER STRONG IN THE MOUNTAINS AND THE SOUTH...AND ALONG THE EAST SLOPES OF THE MOUNTAINS AS WELL AS THROUGH THE WIND CORRIDOR. THE PRECIPITATION THROUGH THE EXTENDED SHOULD BE ALMOST ENTIRELY IN THE FORM OF SNOW. NOT MUCH CHANGE IN TEMPERATURES AND WILL BE RATHER DIFFICULT WITH PERIODS OF PRECIPITATION...CLOUD COVER AND WINDS HAVING SIGNIFICANT IMPACT ON DAILY TEMPERATURES. WITH THE FAT FLOW...CHANGES IN TIMING OF TROUGHS AND FRONTS WILL BE DIFFICULT AS WELL AND MAY SEE CHANGES IN TIMING THROUGH THE EXTENDED FORECAST THE NEXT SEVERAL DAYS. AT THIS TIME THE MODELS SEEM TO BE IN FAIR AGREEMENT AND TIMING FROM PREVIOUS FORECAST LOOKS FAIRLY CLOSE AS WELL. && .RIW WATCHES/WARNINGS/ADVISORIES...HIGH WIND WARNING FOR CODY FOOTHILLS...WYOMING ZONE 03...THROUGH NOON TUESDAY. HIGH WIND WARNING FOR THE GREEN MOUNTAINS...WYOMING ZONE 18... THROUGH EARLY TUESDAY EVENING. HIGH WIND WATCH FOR NATRONA COUNTY...WYOMING ZONE 20...MIDNIGHT TONIGHT THROUGH EARLY TUESDAY EVENING. WINTER STORM WATCH TUESDAY AFTERNOON THROUGH WEDNESDAY FOR WESTERN MOUNTAINS...WYOMING ZONES 12...14-15...24. WINTER STORM WATCH TUESDAY NIGHT THROUGH WEDNESDAY FOR WESTERN VALLEYS...WYOMING ZONES 13...23 AND 25. && SHORT TERM...AEM/LIPSON/TWB LONG TERM...C.BAKER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 404 PM MST MON JAN 9 2006 WYZ001>020-022>030-101201- 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- 404 PM MST MON JAN 9 2006 ...HIGH WIND WATCHES FOR CASPER AND CODY AREAS AS WELL AS BEAVER RIM AREA MIDNIGHT TONIGHT THROUGH TUESDAY... ...WINTER STORM WATCHES FOR MUCH OF WESTERN WYOMING TUESDAY AFTERNOON THROUGH WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT WINDS WILL INCREASE ACROSS CENTRAL WYOMING FROM EASTERN SWEETWATER COUNTY AND SOUTHERN FREMONT COUNTY...INTO NATRONA COUNTY OVERNIGHT. SUSTAINED WINDS COULD EXCEED 40 MPH WITH GUSTS TO 60 MPH TONIGHT AND TUESDAY. STRONG WIND ARE ALSO POSSIBLE ALONG THE CODY FOOTHILLS. THESE WINDS WILL MAKE TRAVEL DIFFICULT...AND WILL BLOW THE SNOW AROUND THAT FELL SUNDAY...CREATING REDUCED VISIBILITY AND DRIFTED SNOW OVER ROADS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY STRONG WINDS WILL LIKELY CONTINUE TUESDAY AND WEDNESDAY OVER MUCH OF THE AREA. AFTER A BRIEF RESPITE FROM THE SNOW MONDAY...A MOIST WESTERLY FLOW WILL DEVELOP BY TUESDAY AFTERNOON AND CONTINUE THROUGH WEDNESDAY NIGHT. THIS PATTERN IS EXPECTED TO BRING HEAVY SNOW TO WESTERN WYOMING ALONG WITH STRONG RIDGE TOP WINDS CREATING TREACHEROUS OR IMPOSSIBLE TRAVEL CONDITIONS OVER MOUNTAIN PASSES. SNOW WILL LIKELY SPREAD ACROSS CENTRAL WYOMING WEDNESDAY NIGHT BEFORE TAPERING OFF THURSDAY. .SPOTTER INFORMATION STATEMENT... REPORT STRONG WINDS...SUSTAINED WIND SPEEDS OVER 40 MPH OR GUSTS OVER 60 MPH TO THE NATIONAL WEATHER SERVICE IN RIVERTON. TRIW
The national radar mosaic for the moment the first event began.
3 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2006Every state in 2006This day in weather historyWarnings in Wyoming, January 2006
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: 5489395, 5489396, 5489397.