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 Mar 5, 2:41 PM MST, 4 hours 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 241 PM MST FRI MAR 5 2004 .TONIGHT THROUGH MONDAY... WELL DEFINED FAST MOVING SHORTWAVE NOW MOVING SOUTHEAST ACROSS THE PACIFIC NORTHWEST WILL TRACK RAPIDLY ACROSS MONTANA TONIGHT WHICH WILL AFFECTIVELY TIGHTEN THE PRESSURE GRADIENT SURFACE AND ALOFT TONIGHT AND SATURDAY. THE H7 WINDS ARE EXPECTED TO INCREASE TO 50 PLUS KNOTS TONIGHT AND SATURDAY. WITH THE TIGHTENING SURFACE PRESSURE GRADIENT AND RESULTING LEE SIDE TROUGH AND THE RIGHT FRONT EXIT REGION OF THE 135 KT JET DRIVING THOSE STRONG WINDS ALOFT TOWARD THE SURFACE...VERY STRONG WINDS ARE ANTICIPATED ALONG THE SOUTHERN WIND CORRIDOR TONIGHT AND SATURDAY. IN ADDITION THE POSSIBILITY OF A MOUNTAIN WAVE EVENT EXISTS...ESPECIALLY TONIGHT...OVER THE CODY FOOTHILLS WITH STRONG MTN TOP INVERSIONS ANTICIPATED THIS EVENING WITH TEH HELP OF TEH ABOVE MENTIONED DYNAMICS. AS A RESULT WE WILL BE ISSUING A HIGH WIND WARNING FOR TONIGHT AND SATURDAY FOR THE CODY FOOTHILLS AND THE SOUTHERN WIND CORRIDOR INCLUDING CPR RKS FOR TONIGHT AND SATURDAY. AS FAR AS HOW THIS SAME SHORTWAVE PLAYS OUT IN THE WEST...WILL KEEP THE SNOW ADVISORY GOING FROM MIDNIGHT TONIGHT UNTIL NOON SATURDAY. THE WINDS SHOULD BE STRONG ENOUGH TO CREATE ENOUGH BLOWING SNOW IN THE WEST TO WARRANT AN ADVISORY. SIX HOUR MESO ETA QPF AMTNS OF .40 SEEM REASONABLE IN SOME OF THE WESTERN MTN LOCATIONS GIVEN THE MARGINAL INSTABILITY...Q VECTOR FORCING AND UPPER DIFFLUENT FLOW. HOWEVER THE RELATIVELY FAST SPEED OF THIS SYSTEM AS WELL AS THE BULK OF THE ENERGY REMAINING TO THE NORTH IN MONTANA WILL KEEP AMOUNTS BELOW WARNING CRITERIA. 7 TO 14 INCHES OF STORM TOTAL SNOW IN SOME OF THE WESTERN MTNS STILL APPEARS LIKELY. DECIDED TO REMOVE MENTION OF BLOWING SNOW ANYWHERE EAST OF THE DIVIDE WITH THE EXCEPTION OF THE BIG HORN MTNS AND CPR MTN SINCE THE PRESENT SNOW COVER IN THESE AREAS ARE COATED WITH A SOLID CRUST. WILL HOWEVER MENTION DRIFTING SNOW IN THE HIGH WARNING AREA. HAVE KEPT SATURDAYS HIGHS BELOW GUIDANCE FOR THE SOUTH HALF OF THE STATE DUE TO THE EXTENSIVE SNOW COVER IN SPITE OF THE WARMING FACTOR OF THE ANTICIPATED CHINOOK. NORTHWEST WINDS SHOULD INCREASE BY SATURDAY AFTERNOON AND EVENING TO 30 TO 40 MPH IN JOHNSON COUNTY BEHIND THE ASSOCIATED PACIFIC COLD FRONT AS THE UPPER TROUGH DEEPENS AND THE RIGHT FRONT QUAD OF WHAT WILL THEN BE A 145 KT JET NOSES INTO THAT AREA. INCREASED THE SNOW AMOUNTS IN THE HIGHER BIG HORN MTNS TO AROUND 2 TO 4 INCHES FOR SATURDAY AND SATURDAY NIGHT. LIGHT SNOW WILL SLOWLY DISSIPATE THROUGH SUNDAY NIGHT IN THE WEST AS THE WEST NORTHWESTERLY FLOW SLOWLY DRIES OUT. EXPECT TEMPS TO WARM UP TO THE 40S IN MANY AREAS OF THE LOWER ELEVATIONS SUNDAY AS H7 TEMPS REBOUND QUICKLY FROM -13C TO -5C. DRY WEATHER IS EXPECTED MONDAY AS A FLAT UPPER RIDGE BUILDS INTO THE AREA AS DOES A 1039MB SFC HIGH OVER SW WY. .MONDAY NIGHT THROUGH FRIDAY... UPPER LEVEL RIDGE CONTINUES TO INFLUENCE THE AREA WEATHER ON TUESDAY. THE UPPER FLOW BECOMES MORE ZONAL WEDNESDAY AND THURSDAY. THE GFS IS PROBABLY ERRONEOUS AT MOVING AN UPPER LOW ACROSS THE AREA WEDNESDAY NIGHT AND THURSDAY. SYSTEM WILL PROBABLY BE MUCH WEAKER. WILL GO WITH A DRY FORECAST...BESIDES SLGT CHC TO CHC POPS ACROSS THE WEST ON WEDNESDAY AND THURSDAY. TEMPS LOOK MILD THROUGH MUCH OF THE EXTENDED WITH 700 MB TEMPS OF MOSTLY IN THE -2 TO 2 DEG C RANGE. && .RIW WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY LATE TONIGHT THROUGH NOON SATURDAY FOR ZONES 1..12>15..23>25. HIGH WIND WARNING FOR TONIGHT AND SATURDAY FOR ZONES 2..3..19..20..22..27>30. && LIPSON/MC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 348 PM MST FRI MAR 5 2004 WYZ001>020-022>030-061159- 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- 348 PM MST FRI MAR 5 2004 ...WINTER WEATHER ADVISORIES FOR PORTIONS OF WESTERN WYOMING LATE TONIGHT THROUGH NOON SATURDAY... ...HIGH WIND WARNING TONIGHT AND SATURDAY FOR PORTIONS OF SOUTHERN AND CENTRAL WYOMING...ABSAROKA MOUNTAINS AND CODY FOOTHILLS... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT A STRONG STORM SYSTEM WILL BRING STRONG WINDS TO PORTIONS OF CENTRAL AND SOUTHERN WYOMING BEGINNING THIS EVENING. SOUTHWEST TO WEST WINDS OF 35 TO 45 MPH WITH GUSTS TO 60 MPH ARE POSSIBLE IN THE LOWER ELEVATIONS...WHILE WINDS OF 50 TO 60 MPH WITH GUSTS TO 75 MPH ARE POSSIBLE IN THE ABSAROKA MOUNTAINS AND CASPER MOUNTAIN. VERY WINDY CONDITIONS WILL OCCUR IN MOST OTHER AREAS AS WELL. SNOW WILL ALSO FALL IN THE WEST...BECOMING POSSIBLY HEAVY AT TIMES AFTER MIDNIGHT THROUGH NOON SATURDAY. STRONG WINDS WILL CREATE SIGNIFICANT BLOWING AND DRIFTING SNOW IN THE MOUNTAINS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. STRONG WINDS WILL CONTINUE THROUGH SATURDAY NIGHT. THESE WINDS ARE EXPECTED TO PRODUCE SOME BLOWING AND DRIFTING SNOW THROUGHOUT THE AREA...MAINLY IN THE MOUNTAINS. THE ONLY EXCEPTION WILL BE THE BIG HORN BASIN WHERE LITTLE IF ANY SNOW EXISTS. SNOW WILL TAPER TO SNOW SHOWERS DURING SATURDAY AFTERNOON IN THE WEST...BUT IS EXPECTED TO CONTINUE THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY NEW SNOW ACCUMULATIONS. LIPSON
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, March 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: 5386204.