Alert archive / Wyoming / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 21, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Jun 4, 2014, 2:20 PM MDT for Fremont County, Wyoming. It was in force for 40 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 4, 2014, 2:20 PM MDT (20:20 UTC)
- Expired
- Jun 4, 2014, 3:00 PM MDT
- In force
- 40 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Fremont County, WY
The radar
The Riverton/Lander radar (KRIW), 12 km from the middle of the area, began a volume at 20:22 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 4, 2:20 PM MDT | TSTM WND GST 63 | Lander, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.3 hours before the alert went out and 17 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
- 4 J/kg
- Mixed-layer CIN
- -194 J/kg
- Mixed-layer LCL
- 2025 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
683 WUUS55 KRIW 042020 SVRRIW WYC013-042100- /O.NEW.KRIW.SV.W.0021.140604T2020Z-140604T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE RIVERTON WY 220 PM MDT WED JUN 4 2014 THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL FREMONT COUNTY IN CENTRAL WYOMING... * UNTIL 300 PM MDT * AT 218 PM MDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM MILFORD TO U.S. HWY 287 MILE MARKER 70...AND MOVING NORTHEAST AT 25 MPH. HAZARD...60 MPH WIND GUSTS. SOURCE...RADAR INDICATED. IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. * SEVERE THUNDERSTORMS WILL BE NEAR... HWY JCT 287 AND 132 AROUND 225 PM MDT. ETHETE AND HUDSON AROUND 240 PM MDT. ARAPAHOE AROUND 255 PM MDT. RIVERTON AND STATE HWY 135 MILE MARKER 10 AROUND 300 PM MDT. OTHER LOCATIONS IN THE WARNING INCLUDE ST. STEPHENS...U.S. HWY 26 MILE MARKER 130 AND FREMONT COUNTY FAIRGROUNDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN RIVERTON. WIND DAMAGE WITH THESE STORMS WILL OCCUR BEFORE ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4325 10855 4292 10818 4258 10862 4291 10899 TIME...MOT...LOC 2020Z 223DEG 23KT 4291 10882 4272 10861 HAIL...<.75IN WIND...60MPH $$ SKRBAC
2 follow-up statements
032 WWUS55 KRIW 042030 SVSRIW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 230 PM MDT WED JUN 4 2014 WYC013-042100- /O.CON.KRIW.SV.W.0021.000000T0000Z-140604T2100Z/ FREMONT WY- 230 PM MDT WED JUN 4 2014 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL FREMONT COUNTY UNTIL 300 PM MDT... AT 227 PM MDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM HWY JCT 287 AND 132 TO U.S. HWY 287 MILE MARKER 70...AND MOVING NORTHEAST AT 25 MPH. AROUND 225 PM MDT...THE LANDER AIRPORT REPORTED A WIND GUST OF 63 MPH. HAZARD...60 TO 65 MPH WIND GUSTS. SOURCE...RADAR INDICATED. IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. SEVERE THUNDERSTORMS WILL BE NEAR... ETHETE AROUND 240 PM MDT. HUDSON AROUND 245 PM MDT. STATE HWY 135 MILE MARKER 10 AND RIVERTON AROUND 300 PM MDT. OTHER LOCATIONS IN THE WARNING INCLUDE ST. STEPHENS...U.S. HWY 26 MILE MARKER 130 AND FREMONT COUNTY FAIRGROUNDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN RIVERTON. WIND DAMAGE WITH THESE STORMS WILL OCCUR BEFORE ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4325 10855 4292 10818 4258 10862 4291 10899 TIME...MOT...LOC 2030Z 223DEG 23KT 4293 10875 4272 10852 HAIL...<.75IN WIND...60MPH $$ SKRBAC
049 WWUS55 KRIW 042054 SVSRIW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 254 PM MDT WED JUN 4 2014 WYC013-042104- /O.EXP.KRIW.SV.W.0021.000000T0000Z-140604T2100Z/ FREMONT WY- 254 PM MDT WED JUN 4 2014 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FREMONT COUNTY WILL EXPIRE AT 300 PM MDT... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER...GUSTY WINDS TO 45 MPH ARE STILL POSSIBLE WITH THESE DYING SHOWERS. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4325 10855 4292 10818 4258 10862 4291 10899 TIME...MOT...LOC 2054Z 223DEG 23KT 4304 10861 4283 10838 $$ SKRBAC
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 8:43 PM MDT | Special Weather Statement | RIW | Washakie | 47 min |
| Jun 4, 10:02 AM MDT | Special Weather Statement | RIW | Park | 58 min |
| Jun 4, 11:30 AM MDT | Special Weather Statement | RIW | Big Horn | 60 min |
| Jun 4, 12:12 PM MDT | Special Weather Statement | RIW | Johnson | 48 min |
| Jun 4, 12:32 PM MDT | Special Weather Statement | RIW | Natrona | 43 min |
| Jun 4, 1:12 PM MDT | Special Weather Statement | RIW | Natrona | 63 min |
| Jun 4, 1:31 PM MDT | Special Weather Statement | RIW | Big Horn | 44 min |
| Jun 4, 1:51 PM MDT | Special Weather Statement | RIW | 24 min | |
| Jun 4, 1:56 PM MDT | Special Weather Statement | RIW | Johnson | 19 min |
| Jun 4, 2:05 PM MDT | Special Weather Statement | RIW | Johnson | 40 min |
| Jun 4, 2:17 PM MDT | Special Weather Statement | RIW | Big Horn | 43 min |
| Jun 4, 2:27 PM MDT | Special Weather Statement | RIW | Johnson | 63 min |
| Jun 4, 2:36 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 54 min |
| Jun 4, 2:50 PM MDT | Special Weather Statement | RIW | Teton | 55 min |
| Jun 4, 3:01 PM MDT | Special Weather Statement | RIW | Big Horn | 44 min |
| Jun 4, 3:20 PM MDT | Special Weather Statement | RIW | Big Horn | 40 min |
| Jun 4, 3:28 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 33 min |
| Jun 4, 3:30 PM MDT | Special Weather Statement | RIW | 45 min | |
| Jun 4, 3:49 PM MDT | Special Weather Statement | RIW | Teton | 41 min |
| Jun 4, 4:32 PM MDT | Special Weather Statement | RIW | Hot Springs | 43 min |
| Jun 4, 4:45 PM MDT | Tornado Warning | RIW | Hot Springs | 30 min |
| Jun 4, 5:12 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs, Washakie | 23 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2014Every severe thunderstorm warning in 2014
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.