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 6, 3:47 AM MST, 6 hours 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 347 AM MST SAT MAR 6 2004 .TODAY THROUGH MONDAY NIGHT... SHORTWAVE OVER WEST/CENTRAL MONTANA EARLY THIS MORNING PRODUCING SOME SNOW IN THE WEST THIS MORNING. WINDS WERE CRANKING PRETTY GOOD AROUND THE CODY FOOTHILLS AND ABSAROKAS FRIDAY AFTERNOON AND EVENING...THOUGH HAVE DECREASED WELL BELOW HIGH WIND CRITERIA. WILL CANCEL THE WARNING THERE AT PACKAGE ISSUANCE. HIGH WINDS REPORTED IN THE GREEN MOUNTAINS AREA THROUGHOUT THE EVENING AND EARLY MORNING HOURS...AND CASPER HAS FINALLY BREACHED 35KT AND EXPECT IT TO CONTINUE THROUGH AT LEAST MID DAY. SWEETWATER COUNTY AND LINCOLN COUNTY WILL GET GOING DURING THE DAYLIGHT HOURS AS H7 GRADIENT TIGHTENS FURTHER WITH 50+KT WINDS OVER SOUTHWEST WYOMING. ROAD CLOSURES WERE REPORTED AROUND THE GREEN MOUNTAINS THIS MORNING DUE TO BLOWING AND DRIFTING SNOW. BLOWING SNOW ALSO LOWERING VIS AROUND CASPER AND ROCK SPRINGS...SO WILL EXPAND BLOWING SNOW IN THE GRIDS TO COVER THESE AREAS. SHORTWAVE TO QUICKLY MOVE THROUGH NORTHEAST WYOMING TODAY. SNOW WILL PERSIST IN THE WEST THIS MORNING...THOUGH SHOULD TAPER OFF TO SHOWERS AFTER 18Z WITH TROF PASSAGE. WILL LET THE WINTER WEATHER ADVISORIES CONTINUE THROUGH THE ORIGINAL 18Z EXPIRATION TIME. TROF PASSAGE WILL CAUSE WINDS TO INCREASE ACROSS THE CWA. JOHNSON COUNTY WILL PROBABLY GET CLOSE TO HIGH WIND CRITERIA...BUT WONT ISSUE ANY HIGHLIGHT THERE. TIGHT GRADIENT RELAXES GRADUALLY SATURDAY NIGHT AS HIGH PRESSURE BUILDS IN. GRADIENT STAYS TIGHT SUNDAY ESPECIALLY IN THE NORTHERN MOUNTAINS SUNDAY AS A SHORTWAVE MOVES OVER THE RIDGE ACROSS SOUTHERN CANADA. RIDGE BUILDS IN FROM THE SOUTHWEST UNITED STATES WITH WYOMING ON THE FRONT SIDE IN NORTHWEST FLOW. GOOD WARM AIR ADVECTION SUNDAY NIGHT. SNOW COVERED BASINS MAY NEED TO BE COOLED DOWN AS STRONG INVERSIONS A SURE BET. .TUESDAY THROUGH SATURDAY... UPPER LEVEL RIDGE CONTINUES TO INFLUENCE THE AREA WEATHER ON TUESDAY. THE UPPER FLOW BECOMES MORE ZONAL WEDNESDAY THROUGH FRIDAY. THE GFS IS GENERATING TO MUCH QPF AS IT ONLY INDICATES A WEAK 500 MB SHORT WAVE MOVING ACROSS THE AREA TUESDAY NIGHT AND WEDNESDAY. WILL GO WITH A DRY FORECAST...BESIDES SLGT CHC TO CHC POPS ACROSS THE WEST ON WEDNESDAY. TEMPS LOOK MILD THROUGH MUCH OF THE EXTENDED WITH 700 MB TEMPS OF MOSTLY IN THE -4 TO 2 DEG C RANGE. && .RIW WATCHES/WARNINGS/ADVISORIES... WINTER WEATHER ADVISORY THROUGH NOON TODAY FOR ZONES 1..12>15..23>25. HIGH WIND WARNING THROUGH THIS AFTERNOON FOR ZONES 19..20..22..27>30. && TWB/MC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 535 AM MST SAT MAR 6 2004 WYZ001>020-022>030-071400- 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- 535 AM MST SAT MAR 6 2004 ...WINTER WEATHER ADVISORIES FOR PORTIONS OF WESTERN WYOMING THROUGH NOON TODAY... ...HIGH WIND WARNING THROUGH THIS AFTERNOON FOR PORTIONS OF SOUTHERN AND CENTRAL WYOMING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT STRONG WINDS WILL CONTINUE ACROSS SOUTHERN AND PORTIONS OF CENTRAL WYOMING TODAY. WEST WINDS OF 40 TO 50 MPH WITH GUSTS TO 70 MPH WILL OCCUR IN THE WARNING AREAS...WITH LOCALLY HIGHER SPEEDS AROUND CASPER MOUNTAIN. WINDS WILL ALSO BE ON THE INCREASE ELSEWHERE AROUND THE AREA TODAY. SNOW WILL CONTINUE ACROSS THE FAR WEST THIS MORNING... TAPERING TO SNOW SHOWERS AROUND NOON. THE WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW WHERE LOOSE SNOW PACK EXISTS... CREATING LOCALLY WHITEOUT CONDITIONS AS WELL AS DRIFTED ROADWAYS IN SPOTS. THE WIND AND SNOW SHOWERS WILL TAPER OFF TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT WIND SPEEDS ABOVE 40 MPH AND ANY NEW SNOW ACCUMULATIONS. 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, 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: 5383741.