1 high wind, as filed by the National Weather Service.
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 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 6, 2:16 PM MST, 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 216 PM MST TUE JAN 6 2004 TONIGHT THROUGH FRIDAY...THE COLD ARCTIC AIRMASS STILL IN PLACE TODAY HAS BEEN MODERATING SLOWLY. TEMPS AT 20Z IN WRL AND GEY WERE -11 AND -12F RESPECTIVELY...UP FROM -30 OR SO THIS MORNING. TEMPERATURES WILL BE COLD ONCE AGAIN TONIGHT...BUT AN INCREASE IN CLOUD COVER WILL KEEP TEMPS FROM FALLING TO LAST NIGHTS LOWS. STRONG INVERSION WILL WEAKEN TOMORROW AS CLOUDS INCREASE ACROSS THE AREA THE AND PRESSURE GRADIENT STRENGTHENS...INCREASING MIXING DUE TO SURFACE WINDS. AN UPPER LEVEL WAVE WILL MOVE THROUGH TOMORROW GIVING THE WEST A CHANCE FOR SOME MEASURABLE SNOWFALL. AN UPPER LEVEL RIDGE BUILDS IN FOR THURSDAY...HELPING TEMPERATURES REBOUND BACK TO NEAR NORMAL. AN UPPER LEVEL TROUGH WILL BE MOVING INTO THE PAC NW FRIDAY. OTHER THAN A SLIGHT CHANCE FOR SNOW SHOWERS IN THE FAR WESTERN MOUNTAINS... FRIDAY LOOKS TO BE FAIR. .FRIDAY NIGHT THROUGH TUESDAY... LATEST GFS...ECMWF AND NCEP ENSEMBLES SHOWING GENERAL AGREEMENT OF UPPER TROUGH BREAKING DOWN RIDGE OVER THE WEEKEND AS IT DROPS DOWN THE BACKSIDE OF AMPLIFYING RIDGE ALONG WEST COAST. OVERALL DOWNSLOPING NORTHWEST FLOW...NOT EXPECTING MUCH MOISTURE WITH SYSTEM WITH BETTER DYNAMICS REMAINING NORTHEAST OF AREA. WILL ADD POPS TO HIGHER ELEVATIONS SATURDAY AND LINGER LOW POPS MUCH OF AREA SATURDAY NIGHT BEFORE SYSTEM DEPARTS...WHICH MATCHES WELL WITH SURROUNDING OFFICES. ENSEMBLES SHOWING LOTS OF SOLUTIONS FOR EARLY NEXT WEEK AND WHAT HAPPENS TO RIDGE TO THE WEST. WILL GO ALONG LINES OF GFS AND MAINTAIN DRIER NORTHWEST FLOW. SOME MINOR FLUCTUATIONS ANTICIPATED FOR TEMPERATURES. CURRENT GRIDS LOOK OK WITH ONLY MINORS MODIFICATIONS. && .RIW WATCHES/WARNINGS/ADVISORIES...NONE. && RK/FRIEDERS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 500 AM MST TUE JAN 6 2004 WYZ001>020-022>030-071200- 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- 500 AM MST TUE JAN 6 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT THE COLDEST AIRMASS OF THE SEASON WILL RESULT IN A BITTERLY COLD MORNING ACROSS THE AREA...ESPECIALLY IN THE BIG HORN BASIN WHERE TEMPERATURES WILL BE CLOSE TO 30 BELOW ZERO AT SUNRISE. WITH TEMPERATURES STARTING OUT THE DAY AT OR BELOW ZERO IN MOST LOCATIONS...LOCALLY BREEZY CONDITIONS WILL PRODUCE WIND CHILL READINGS AS COLD AS 20 TO 30 BELOW ZERO. DAYTIME HIGHS WILL ONLY REACH THE SINGLE DIGITS AT BEST IN THE CENTRAL BASINS BEFORE FALLING BELOW ZERO AGAIN TONIGHT. HOWEVER TEMPERATURES WILL NOT BE AS COLD TONIGHT AS THEY ARE THIS MORNING. PACIFIC MOISTURE IS EXPECTED TO BRING SNOW TO WESTERN WYOMING MAINLY TONIGHT THROUGH WEDNESDAY EVENING WITH MOST OF THE SNOWFALL IN THE HIGHER MOUNTAINS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT IN WITH ANY EXTREME LOW TEMPERATURE READINGS THIS MORNING. LIPSON
SPECIAL WEATHER STATEMENT...CORRECTED SPELLING NATIONAL WEATHER SERVICE RIVERTON WY 919 AM MST TUE JAN 6 2004 WYZ001>020-022>030-070100- 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- 1037 AM MST TUE JAN 6 2004 ...FRIGID TEMPERATURES THIS MORNING ACROSS WESTERN AND CENTRAL WYOMING... AN ARCTIC FRONT SWEPT THROUGH WYOMING SUNDAY BRINGING THE COLDEST AIRMASS OF THE SEASON. SKIES WERE CLEAREST THIS MORNING...ALLOWING THE TEMPERATURES TO REACH THEIR LOWEST YET. HERE IS A LIST OF LOW TEMPERATURES FROM AROUND THE AREA FOR JANUARY 6, 2004. WORLAND... 32 BELOW ZERO. FARSON... 32 BELOW ZERO. BONDURANT... 31 BELOW ZERO. CLARK... 30 BELOW ZERO. GREYBULL... 30 BELOW ZERO. BOULDER... 29 BELOW ZERO. KIRBY... 28 BELOW ZERO. LAKE YELLOWSTONE... 24 BELOW ZERO. BIG PINEY... 23 BELOW ZERO. HUDSON... 23 BELOW ZERO. RIVERTON 8 MILES NORTH... 23 BELOW ZERO. WAPITI... 23 BELOW ZERO. COKEVILLE... 22 BELOW ZERO. MOOSE... 22 BELOW ZERO. POWELL FIELD STATION... 21 BELOW ZERO. SHOSHONI... 21 BELOW ZERO. SIXTH CROSSING (SWEETWATER STATION)... 21 BELOW ZERO. SOUTH PASS CITY... 21 BELOW ZERO. SUNLIGHT BASIN... 21 BELOW ZERO. LANDER (DOWN TOWN)... 20 BELOW ZERO. RIVERTON AIRPORT... 20 BELOW ZERO. RIVERTON (DOWN TOWN)... 19 BELOW ZERO. YELLOWSTONE EAST ENTRANCE... 19 BELOW ZERO. PAVILLION... 18 BELOW ZERO. CODY AIRPORT... 18 BELOW ZERO. PINEDALE... 16 BELOW ZERO. LANDER AIRPORT... 14 BELOW ZERO. BUFFALO AIRPORT... 13 BELOW ZERO. THERMOPOLIS... 12 BELOW ZERO. AFTON... 11 BELOW ZERO. JACKSON AIRPORT... 11 BELOW ZERO. STAR VALLEY RANCH... 11 BELOW ZERO. CASPER AIRPORT... 9 BELOW ZERO. DUBOIS... 8 BELOW ZERO. ROCK SPRINGS AIRPORT... 4 BELOW ZERO. EVANSTON... 2 BELOW ZERO. JEFFREY CITY... ZERO. THANK YOU TO ALL THE SPOTTERS WITH THEIR TIMELY REPORTS. TWB
SPECIAL WEATHER STATEMENT...UPDATED NATIONAL WEATHER SERVICE RIVERTON WY 1126 AM MST TUE JAN 6 2004 WYZ001>020-022>030-070100- 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- 1126 AM MST TUE JAN 6 2004 ...FRIGID TEMPERATURES THIS MORNING ACROSS WESTERN AND CENTRAL WYOMING... AN ARCTIC FRONT SWEPT THROUGH WYOMING SUNDAY BRINGING THE COLDEST AIRMASS OF THE SEASON. SKIES WERE CLEAREST THIS MORNING...ALLOWING THE TEMPERATURES TO REACH THEIR LOWEST YET. HERE IS AN UPDATED LIST OF LOW TEMPERATURES FROM AROUND THE AREA FOR JANUARY 6, 2004. FARSON... 32 BELOW ZERO. GREYBULL... 32 BELOW ZERO. WORLAND... 32 BELOW ZERO. BONDURANT... 31 BELOW ZERO. CLARK... 30 BELOW ZERO. BOULDER... 29 BELOW ZERO. KIRBY... 28 BELOW ZERO. BIG PINEY... 26 BELOW ZERO. LAKE YELLOWSTONE... 24 BELOW ZERO. HUDSON... 23 BELOW ZERO. RIVERTON 8 MILES NORTH... 23 BELOW ZERO. WAPITI... 23 BELOW ZERO. COKEVILLE... 22 BELOW ZERO. MOOSE... 22 BELOW ZERO. POWELL FIELD STATION... 21 BELOW ZERO. SHOSHONI... 21 BELOW ZERO. SIXTH CROSSING (SWEETWATER STATION)... 21 BELOW ZERO. SOUTH PASS CITY... 21 BELOW ZERO. SUNLIGHT BASIN... 21 BELOW ZERO. LANDER (DOWN TOWN)... 20 BELOW ZERO. RIVERTON AIRPORT... 20 BELOW ZERO. RIVERTON (DOWN TOWN)... 19 BELOW ZERO. YELLOWSTONE EAST ENTRANCE... 19 BELOW ZERO. JACKSON AIRPORT... 18 BELOW ZERO. LANDER AIRPORT... 18 BELOW ZERO. PAVILLION... 18 BELOW ZERO. CODY AIRPORT... 18 BELOW ZERO. PAHASKA... 16 BELOW ZERO. PINEDALE 1 MILE NORTH... 16 BELOW ZERO. BUFFALO AIRPORT... 13 BELOW ZERO. THERMOPOLIS... 12 BELOW ZERO. AFTON... 11 BELOW ZERO. STAR VALLEY RANCH... 11 BELOW ZERO. CASPER AIRPORT... 9 BELOW ZERO. DUBOIS... 8 BELOW ZERO. ROCK SPRINGS AIRPORT... 5 BELOW ZERO. EVANSTON... 2 BELOW ZERO. JEFFREY CITY... ZERO. THANK YOU TO ALL THE SPOTTERS WITH THEIR TIMELY REPORTS. TWB
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2004Every state in 2004This day in weather historyWarnings in Wyoming, January 2004
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: 5380774.