Alert archive / Wyoming / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 44, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Aug 21, 2006, 2:29 PM MDT for Johnson County, Natrona County, Wyoming. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 21, 2006, 2:29 PM MDT (20:29 UTC)
- Expired
- Aug 21, 2006, 3:13 PM MDT
- In force
- 44 min
- Issued by
- NWS Riverton, WY
- Area
- Counties, with a storm outline in the text
Counties Johnson County, WY, Natrona County, WY
The radar
The Riverton/Lander radar (KRIW), 152 km from the middle of the area, began a volume at 20:32 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Aug 21, 2:06 PM MDT, 23 minutes earlier.
Area forecast discussion, Aug 21, 2:06 PM MDT, 23 minutes before
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</html>Hazardous weather outlook, Aug 21, 1:58 PM MDT, 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 158 PM MDT MON AUG 21 2006 WYZ001>020-022>030-221300- 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- 158 PM MDT MON AUG 21 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE OVER MUCH OF WESTERN AND CENTRAL WYOMING THROUGH THIS EVENING. THE STRONGEST STORMS WILL OCCUR IN JOHNSON AND NATRONA COUNTIES. ATMOSPHERIC INSTABILITY AND AVAILABLE MOISTURE ARE THE GREATEST IN THIS AREA ALONG WITH FAVORABLE LOWER AND MID LEVEL WINDS. SOME SEVERE THUNDERSTORMS WILL BE POSSIBLE SOUTH AND EAST OF THE BIGHORN MOUNTAINS. THE MAIN THREAT WITH OTHER STORMS ACROSS THE REGION WILL BE WIND GUSTS TO 40 MPH ALONG WITH DANGEROUS CLOUD TO GROUND LIGHTNING. NEW FIRES WILL BE POSSIBLE AS FUEL CONDITIONS REMAIN RIPE FOR FIRE STARTS FROM LIGHTNING STRIKES. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE CHANCE OF THUNDERSTORMS CONTINUES TUESDAY AND WEDNESDAY ACROSS THE NORTHERN PART OF THE STATE...ALONG WITH ISOLATED THUNDERSTORM ACTIVITY ACROSS THE EXTREME SOUTHERN PORTIONS OF OUR AREA. THESE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING DANGEROUS CLOUD TO GROUND LIGHTNING AND GUSTY WINDS. ISOLATED THUNDERSTORM ACTIVITY WILL REMAIN POSSIBLE ACROSS THE AREA THURSDAY AND FRIDAY... PRODUCING SIMILAR THREATS. SPOTTER INFORMATION STATEMENT... SPOTTERS IN JOHNSON AND NATRONA COUNTIES ARE ASKED TO PLEASE RELAY ANY REPORTS OF LARGE HAIL OR SEVERE WIND GUSTS TO THE NATIONAL WEATHER SERVICE. SPOTTERS ACROSS THE REMAINDER OF WESTERN AND CENTRAL WYOMING ARE ASKED TO REPORT WIND GUSTS IN EXCESS OF 40 MPH TODAY. THANK YOU. TRIW
In the hours before
Local storm report, Aug 21, 2:15 PM MDT, 14 minutes before
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</html>The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 1:48 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 42 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2006Every severe thunderstorm warning in 2006
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.