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 30, 2:30 AM MST, 7 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 230 AM MST FRI JAN 30 2004 .TODAY THROUGH SUNDAY NIGHT... LIGHT SNOW CONTINUING IN THE WESTERN MOUNTAINS AND AT TIMES WESTERN VALLEYS OVERNIGHT. ISENTROPIC ANALYSIS CONTINUES TO SHOW POTENTIAL FOR MORE LIGHT TO OCCASIONAL MODERATE SNOW THIS MORNING BEFORE DYNAMICS FROM APPROACHING COLD FRONT INTENSIFY THE SNOW AND SPREAD ACROSS THE REST OF THE WEST. ETA/MSO-ETA HAD GOOD ANALYSIS AND WAS GENERALLY FOLLOWED THIS MORNING. WILL ADD IN ALL OF THE WESTERN MOUNTAINS TO THE WINTER WEATHER ADVISORY THROUGH THIS EVENING AND WESTERN VALLEYS AFTER 10 AM THROUGH THIS EVENING. SNOW SHOULD INTENSIFY AFTER 18Z OR SO AS JET DYNAMICS AND MID LEVEL FRONTOGENESIS DEVELOPS ACROSS THE WEST. LAPSE RATES STEEPEN CONSIDERABLY THIS AFTERNOON AND EVENING APPROACHING 7.5-8C/KM. BURSTS OF HEAVIER SNOW QUITE POSSIBLE IN THIS SCENARIO LATER THIS AFTERNOON AND EARLY EVENING WITH EVEN THUNDERSNOW NOT OUT OF THE REALM OF POSSIBILITY. SOUTHWEST WINDS WILL ALSO INCREASE AND CAUSE PROBLEMS EVEN IN THE WESTERN VALLEYS. AS SURFACE LOW MOVES ACROSS MONTANA PRESSURE GRADIENT ACROSS THE WIND CORRIDOR INCREASES ENOUGH TO WARRANT A HIGH WIND WARNING FOR THE RATTLESNAKE/GREEN MOUNTAINS FOR THE LATE MORNING THROUGH EVENING TIMEFRAME. CASPER SHOULD ALSO INCREASE SIGNIFICANTLY BUT BELIEVE WINDS WILL STAY BELOW CRITERIA BUT STILL GUST AROUND 50 MPH. STILL WORTH MONITORING CLOSELY THOUGH. FRONT SHOULD MOVE QUICKLY THROUGH THE CENTRAL BASINS AFTER 00Z AND BE OUT OF THE STATE AFTER MIDNIGHT. MOST AREAS WILL MIX OUT TODAY (IF THEYRE NOT ALREADY) AND IT WILL BE WINDY MANY AREAS THIS AFTERNOON AND OR EVENING. ARCTIC BOUNDARY LURKING JUST TO THE NORTH AND EAST OF JOHNSON COUNTY AND MAY SNEAK BACK IN BEHIND THIS COLDER FRONT ON SATURDAY OR SATURDAY NIGHT. COLD UNSTABLE CYCLONIC FLOW CONTINUES THROUGH SATURDAY AT LEAST WITH LIGHT MOUNTAIN SNOW OR SNOW SHOWERS AND POSSIBLY A FEW SNOW SHOWERS LOWER ELEVATIONS OF THE NORTH... ESPECIALLY AFTERNOON HOURS. OVERNIGHT LOWS SHOULD PLUMMET AGAIN OVER THE NEXT COUPLE NIGHTS WITH -15 TO -18C AIR AT H7 OVER US. HAVE DROPPED LOWS QUITE A BIT ESPECIALLY SUNDAY MORNING. NEXT DISTURBANCE ON SUNDAY MAY JUST CLIP THE SOUTHWEST AND HAVE BEEFED UP POPS TO MATCH BETTER. SOME MODERATION IN H7 TEMPERATURES MONDAY BUT THAT SHOULD ONLY HELP WARM UP THE HIGHER ELEVATIONS WITH BASINS/VALLEYS TRAPPED. .MONDAY THROUGH FRIDAY... NEXT WEATHER MAKER WILL BE A DEEP TROUGH INTO THE WEST COAST BY MONDAY AND PROGRESSING ACROSS THE ROCKIES TUESDAY. THIS SCENARIO SIMILAR TO YESTERDAYS RUN AND SO A BIT MORE CONFIDENCE IN FORECAST. MOIST SOUTHWESTERLY FLOW BEGINS TO PUSH INTO SOUTHWEST WYOMING BY LATE MONDAY INTO MONDAY NIGHT AHEAD OF SYSTEM. HAVE CONTINUED TO INCREASE POPS ACROSS MAINLY SOUTHWEST WYOMING INTO THE WIND RIVER MOUNTAINS THROUGH MONDAY NIGHT. HAVE ALSO INCREASED POPS INTO THE CENTRAL BASINS BY TUES/TUES NIGHT WITH A PERIOD OF NORTHEAST UPSLOPE POTENTIAL. OTHERWISE...NORTHWEST FLOW TO PERSIST BEHIND SYSTEM AND HAVE DRIED OUT MOST AREAS WITH THE EXCEPTION OF SOME LOW POPS IN WESTERN MOUNTAINS. && .RIW WATCHES/WARNINGS/ADVISORIES...WINTER WEATHER ADVISORY WESTERN MOUNTAINS TODAY THROUGH THIS EVENING. WINTER WEATHER ADVISORY WESTERN VALLEYS LATE THIS MORNING THROUGH THIS EVENING. HIGH WIND WARNING GREEN MOUNTAINS/RATTLESNAKE RANGE ZONE 19 FOR LATE THIS MORNING THROUGH THIS EVENING. && SKRBAC/FRIEDERS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 500 AM MST FRI JAN 30 2004 WYZ001>020-022>030-311200- 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 FRI JAN 30 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT... THE NATIONAL WEATHER SERVICE HAS ISSUED A WINTER WEATHER ADVISORY THROUGH THIS EVENING FOR THE WESTERN MOUNTAINS AND FOR LATE THIS MORNING THROUGH THIS EVENING FOR THE FAR WEST VALLEYS. NEW SNOWFALL OF 4 TO 8 INCHES IS EXPECTED BY LATER THIS EVENING IN THE MOUNTAINS AND UP TO 5 INCHES IN THE FAR WEST VALLEYS. STRONG SOUTHWEST WINDS WILL CAUSE CONSIDERABLE BLOWING AND DRIFTING SNOW THIS AFTERNOON AND EVENING...ESPECIALLY AT PASS AND PEAK LEVEL. HOWEVER...STRONGER WINDS ARE EVEN EXPECTED ACROSS THE JACKSON AND STAR VALLEYS WHERE SOUTHWEST WINDS UP TO 35 OR 40 MPH WILL HAMPER TRAVEL DUE TO REDUCED VISIBILITY IN BLOWING SNOW. THIS SAME STORM SYSTEM WILL ALSO BRING HIGH WINDS TO THE RATTLESNAKE RANGE AND GREEN MOUNTAINS OF CENTRAL WYOMING TODAY. SOUTHWEST WINDS WILL INCREASE TO 35 TO 45 MPH WITH GUSTS TO 65 MPH FROM LATE THIS MORNING THROUGH THIS EVENING. TRAVELLERS HEADING FROM RIVERTON OR LANDER TOWARDS BEAVER RIM...SWEETWATER STATION OR JEFFREY CITY SHOULD BE PREPARED FOR THESE VERY STRONG SOUTHWEST WINDS TODAY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ANOTHER POTENTIAL STORM SYSTEM IS EXPECTED TO DEVELOP OVER THE WEST TUESDAY INTO WEDNESDAY. THIS STORM SYSTEM HAS THE CAPABILITY OF BRINGING SNOW TO MUCH OF THE STATE. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS IN THE WEST TODAY AND STRONG WIND REPORTS FROM EAST CENTRAL WYOMING. SKRBAC
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: 5380778.