Alert archive / Wyoming / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 21, NWS Riverton, WY
NWS Riverton, WY issued this severe thunderstorm warning at Jun 5, 2015, 5:05 PM MDT for Fremont County, Wyoming. It was in force for 55 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
- Jun 5, 2015, 5:05 PM MDT (23:05 UTC)
- Expired
- Jun 5, 2015, 6:00 PM MDT
- In force
- 55 min
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Fremont County, WY
The radar
The Riverton/Lander radar (KRIW), 63 km from the middle of the area, began a volume at 23:07 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 4, 1:08 PM MDT | Severe Thunderstorm Watch | SPC | 112 days |
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 11.1 hours before the alert went out and 57 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
- 109 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
871
WUUS55 KRIW 052305
SVRRIW
WYC013-060000-
/O.NEW.KRIW.SV.W.0021.150605T2305Z-150606T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
505 PM MDT FRI JUN 5 2015
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL FREMONT COUNTY IN CENTRAL WYOMING...
* UNTIL 600 PM MDT
* AT 504 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MONETA...
WHICH IS 13 MILES EAST OF SHOSHONI...MOVING NORTH AT 10 MPH.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS...SIDING AND TREES.
* THIS SEVERE THUNDERSTORM WILL BE NEAR...
LYSITE AROUND 535 PM MDT.
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 OFFICE IN
RIVERTON.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4306 10754 4308 10803 4346 10803 4346 10754
TIME...MOT...LOC 2304Z 174DEG 8KT 4317 10784
HAIL...1.00IN
WIND...60MPH
$$
132 follow-up statements
008
WWUS55 KRIW 052329
SVSRIW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
529 PM MDT FRI JUN 5 2015
WYC013-060000-
/O.CON.KRIW.SV.W.0021.000000T0000Z-150606T0000Z/
FREMONT-
529 PM MDT FRI JUN 5 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM MDT
FOR EAST CENTRAL FREMONT COUNTY...
AT 528 PM MDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
MONETA...WHICH IS 13 MILES EAST OF SHOSHONI...MOVING NORTH AT 5 MPH.
A FLASH FLOOD WARNING IS ALSO IN EFFECT FOR THIS AREA UNTIL 1130 PM
MDT.
HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED.
IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
ROOFS...SIDING AND TREES.
THIS SEVERE STORM WILL BE NEAR...
LYSITE AROUND 600 PM MDT.
#
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON.
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4306 10754 4308 10803 4346 10803 4346 10754
TIME...MOT...LOC 2328Z 198DEG 5KT 4320 10784
HAIL...1.00IN
WIND...60MPH
$$
13946
WWUS55 KRIW 052353
SVSRIW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
553 PM MDT FRI JUN 5 2015
WYC013-060002-
/O.EXP.KRIW.SV.W.0021.000000T0000Z-150606T0000Z/
FREMONT-
553 PM MDT FRI JUN 5 2015
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FREMONT COUNTY
WILL EXPIRE AT 600 PM MDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER A FLASH
FLOOD WARNING IS IN EFFECT FOR THIS AREA UNTIL 1130 PM MDT.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
RIVERTON.
LAT...LON 4306 10754 4308 10803 4346 10803 4346 10754
TIME...MOT...LOC 2346Z 174DEG 8KT 4320 10784
$$
13The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 9:53 PM MDT | Special Weather Statement | RIW | Fremont | 52 min |
| Jun 4, 10:36 PM MDT | Special Weather Statement | RIW | Fremont | 39 min |
| Jun 4, 10:44 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 31 min |
| Jun 4, 10:56 PM MDT | Special Weather Statement | RIW | Hot Springs | 34 min |
| Jun 4, 11:10 PM MDT | Special Weather Statement | RIW | Fremont | 50 min |
| Jun 4, 11:15 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Hot Springs | 30 min |
| Jun 4, 11:44 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs | 34 min |
| Jun 5, 12:27 AM MDT | Special Weather Statement | RIW | Washakie | 48 min |
| Jun 5, 2:48 PM MDT | Special Weather Statement | RIW | Natrona | 42 min |
| Jun 5, 2:54 PM MDT | Areal Flood Advisory | RIW | Natrona | 3 hr |
| Jun 5, 3:03 PM MDT | Special Weather Statement | RIW | Natrona | 42 min |
| Jun 5, 3:16 PM MDT | Severe Thunderstorm Warning | RIW | Natrona | 59 min |
| Jun 5, 3:19 PM MDT | Flash Flood Warning | RIW | Natrona | 9 hr |
| Jun 5, 3:51 PM MDT | Special Weather Statement | RIW | Natrona | 39 min |
| Jun 5, 3:53 PM MDT | Special Weather Statement | RIW | Natrona | 52 min |
| Jun 5, 4:08 PM MDT | Special Weather Statement | RIW | Teton | 37 min |
| Jun 5, 4:14 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Natrona | 61 min |
| Jun 5, 4:29 PM MDT | Special Weather Statement | RIW | 61 min | |
| Jun 5, 4:41 PM MDT | Tornado Warning | RIW | Fremont | 34 min |
| Jun 5, 4:44 PM MDT | Special Weather Statement | RIW | Park | 46 min |
| Jun 5, 4:48 PM MDT | Special Weather Statement | RIW | Teton | 42 min |
| Jun 5, 4:51 PM MDT | Special Weather Statement | RIW | 39 min | |
| Jun 5, 4:59 PM MDT | Special Weather Statement | RIW | 46 min | |
| Jun 5, 5:14 PM MDT | Areal Flood Advisory | RIW | Fremont | 3 hr |
| Jun 5, 5:16 PM MDT | Special Weather Statement | RIW | Washakie | 44 min |
| Jun 5, 5:25 PM MDT | Flash Flood Warning | RIW | Fremont | 6 hr |
| Jun 5, 5:26 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 49 min |
| Jun 5, 5:34 PM MDT | Areal Flood Advisory | RIW | Johnson | 3 hr |
| Jun 5, 5:38 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs, Washakie | 67 min |
| Jun 5, 5:45 PM MDT | Areal Flood Advisory | RIW | Fremont, Hot Springs, Washakie | 3 hr |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2015Every severe thunderstorm warning in 2015
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.