Alert archive / Wyoming / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 37, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Jul 1, 2006, 2:13 PM MDT for Johnson County, Wyoming. It was in force for 47 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
- Jul 1, 2006, 2:13 PM MDT (20:13 UTC)
- Expired
- Jul 1, 2006, 3:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Riverton, WY
- Area
- Counties, with a storm outline in the text
County Johnson County, WY
The radar
The Riverton/Lander radar (KRIW), 187 km from the middle of the area, began a volume at 20:16 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.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.2 hours before the alert went out and 182 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1824 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 1, 2:33 AM MDT, 11 hours 40 minutes earlier.
Area forecast discussion, Jul 1, 2:33 AM MDT, 11 hours 40 minutes before
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</html>Hazardous weather outlook, Jul 1, 5:00 AM MDT, 9 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 500 AM MDT SAT JUL 1 2006 WYZ001>020-022>030-021100- 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 MDT SAT JUL 1 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT ANOTHER AFTERNOON AND NIGHT OF THUNDERSTORMS EXPECTED FOR WESTERN AND CENTRAL WYOMING. SOME OF THE STORMS ACROSS CENTRAL WYOMING COULD BE QUITE STRONG PRODUCING HAIL LARGER THAN THREE QUARTERS OF AN INCH AND WIND GUSTS OVER 60 MPH. RAIN COULD BE VERY HEAVY WITH SOME OF THESE STORMS...CAUSING WATER TO POND ON ROAD SURFACES. SMALL STREAM FLOODING IS ALSO POSSIBLE. THE STORMS WILL LIKELY PERSIST PAST MIDNIGHT TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE THREAT OF AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE THROUGH TUESDAY. SUNDAY IS EXPECTED TO BE SIMILAR TO TODAY WITH SOME SEVERE THUNDERSTORMS POSSIBLE. ON THE FOURTH OF JULY... THUNDERSTORMS ARE EXPECTED TO BE MAINLY CONCENTRATED ALONG A STATIONARY FRONTAL BOUNDARY AGAINST THE EAST SLOPES OF THE ABSAROKA AND WIND RIVER RANGES IN THE AFTERNOON AND EVENING...WITH THESE THUNDERSTORMS PRODUCING GUSTY OUTFLOW WINDS THROUGH THE EVENING. SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT ANY HAIL...WIND GUSTS OVER 50 MPH OR ANY FLOODING THIS AFTERNOON AND TONIGHT. THANK YOU. TEAM RIW
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 7:08 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs | 52 min |
| Jun 30, 7:40 PM MDT | Severe Thunderstorm Warning | RIW | Washakie | 20 min |
| Jun 30, 7:59 PM MDT | Severe Thunderstorm Warning | RIW | Washakie | 46 min |
| Jun 30, 8:47 PM MDT | Severe Thunderstorm Warning | RIW | Washakie | 43 min |
| Jun 30, 10:10 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 50 min |
| Jun 30, 10:58 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 47 min |
| Jul 1, 1:55 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs | 50 min |
| Jul 1, 2:51 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 54 min |
| Jul 1, 4:17 PM MDT | Flash Flood Warning | RIW | Hot Springs | 118 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.