Alert archive / Wyoming / Special Weather Statements in 2013
Special Weather Statement, NWS Riverton, WY
NWS Riverton, WY issued this special weather statement at Aug 9, 2013, 3:36 PM MDT. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2013, 3:36 PM MDT (21:36 UTC)
- Expired
- Aug 9, 2013, 4:15 PM MDT
- In force
- 39 min
- Issued by
- NWS Riverton, WY
The radar
The Riverton/Lander radar (KRIW), 74 km from the middle of the area, began a volume at 21:38 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, 9.6 hours before the alert went out and 79 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
- 1 J/kg
- Mixed-layer CIN
- -264 J/kg
- Mixed-layer LCL
- 1948 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 9, 3:12 PM MDT, 24 minutes earlier.
Area forecast discussion, Aug 9, 3:12 PM MDT, 24 minutes before
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</html>Hazardous weather outlook, Aug 9, 5:00 AM MDT, 10 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 500 AM MDT FRI AUG 9 2013 WYZ001>020-022>030-101100- 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 FRI AUG 9 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED STRONG THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING...MAINLY NORTHEAST OF A LOVELL TO TO CASPER LINE. THE MAIN THREAT FROM ANY OF THESE STORMS WILL BE GUSTY WINDS TO 40 MPH AND POSSIBLY SOME PEA TO MARBLE SIZE HAIL. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SATURDAY...ISOLATED THUNDERSTORMS WEST...WIDELY SCATTERED THUNDERSTORMS CENTRAL. SUNDAY THROUGH WEDNESDAY...ISOLATED THUNDERSTORMS ACROSS THE NORTH AND EAST CENTRAL. .SPOTTER INFORMATION STATEMENT... PLEASE REPORT WINDS OVER 45 MPH AND HAIL OF ANY SIZE. THANK YOU. TEAM RIVERTON
In the hours before
Special weather statement, Aug 9, 2:21 PM MDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 221 PM MDT FRI AUG 9 2013 WYZ007-017-092115- OWL CREEK AND BRIDGER MOUNTAINS WY-WIND RIVER BASIN WY- 221 PM MDT FRI AUG 9 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FREMONT COUNTY UNTIL 315 PM MDT... AT 219 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES NORTH OF PAVILLION...MOVING EAST AT 10 MPH. PEA SIZED HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING. THIS STORM WILL BE NEAR... RURAL CENTRAL FREMONT COUNTY THROUGH 315 PM MDT IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. REPORT HAZARDOUS WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4342 10824 4310 10838 4325 10886 4349 10879 TIME...MOT...LOC 2021Z 276DEG 10KT 4333 10866 C. BAKER
Special weather statement, Aug 9, 2:39 PM MDT, 57 minutes before
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</html>Special weather statement, Aug 9, 2:43 PM MDT, 53 minutes before
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</html>Special weather statement, Aug 9, 3:31 PM MDT, 5 minutes before
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</html>Special weather statement, Aug 9, 3:32 PM MDT, 4 minutes before
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</html>Special weather statement, Aug 9, 3:36 PM MDT, 0 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 8, 6:34 PM MDT | Special Weather Statement | RIW | Big Horn | 26 min |
| Aug 8, 7:12 PM MDT | Special Weather Statement | RIW | Johnson | 48 min |
| Aug 9, 1:29 PM MDT | Special Weather Statement | RIW | Johnson | 46 min |
| Aug 9, 1:42 PM MDT | Special Weather Statement | RIW | Sublette | 48 min |
| Aug 9, 2:21 PM MDT | Special Weather Statement | RIW | Fremont | 54 min |
| Aug 9, 2:39 PM MDT | Special Weather Statement | RIW | 66 min | |
| Aug 9, 2:43 PM MDT | Special Weather Statement | RIW | Natrona | 47 min |
| Aug 9, 3:31 PM MDT | Special Weather Statement | RIW | Natrona | 44 min |
| Aug 9, 3:32 PM MDT | Special Weather Statement | RIW | Hot Springs | 43 min |
| Aug 9, 4:01 PM MDT | Special Weather Statement | RIW | Natrona | 44 min |
| Aug 9, 4:03 PM MDT | Special Weather Statement | RIW | Fremont | 42 min |
| Aug 9, 4:31 PM MDT | Special Weather Statement | RIW | Natrona | 44 min |
| Aug 9, 4:47 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 58 min |
| Aug 9, 4:54 PM MDT | Special Weather Statement | RIW | Hot Springs | 51 min |
| Aug 9, 4:55 PM MDT | Special Weather Statement | RIW | Natrona | 50 min |
| Aug 9, 4:57 PM MDT | Special Weather Statement | RIW | Natrona | 48 min |
| Aug 9, 5:39 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 51 min |
| Aug 9, 5:53 PM MDT | Special Weather Statement | RIW | 37 min |
Nearby
Special Weather Statements in Wyoming, 2013Every special weather statement in 2013
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.