Alert archive / Wyoming / Tornado Warnings in 2007
Tornado Warning 9, NWS Riverton, WY
NWS Riverton, WY issued this tornado warning at Sep 5, 2007, 1:42 PM MDT for Lincoln County, Wyoming. It was in force for 38 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
- Sep 5, 2007, 1:42 PM MDT (19:42 UTC)
- Expired
- Sep 5, 2007, 2:20 PM MDT
- In force
- 38 min
- Issued by
- NWS Riverton, WY
- Area
- Counties, with a storm outline in the text
County Lincoln County, WY
The radar
The Pocatello radar (KSFX), 140 km from the middle of the area, began a volume at 19:46 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 |
|---|---|---|---|
| Sep 5, 12:51 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 7.7 hours before the alert went out and 208 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
- 1056 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS55 KRIW 051942
TORRIW
WYC023-052030-
/O.NEW.KRIW.TO.W.0009.070905T1942Z-070905T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
142 PM MDT WED SEP 5 2007
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN LINCOLN COUNTY IN WEST CENTRAL WYOMING...
* UNTIL 230 PM MDT
* AT 138 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
SOUTHWEST OF STEWART PEAK...OR ABOUT 20 MILES NORTHWEST OF AFTON...
MOVING NORTHEAST AT 20 MPH.
* THE TORNADO WILL BE NEAR...
STEWART PEAK BY 215 PM MDT...
U.S. HWY 26/89 MILE MARKER 120 BY 220 PM MDT...
U.S. HWY 26/89 MILE MARKER 130 BY 230 PM MDT...
MOVE INTO A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. ABANDON MOBILE HOMES AND VEHICLES.
REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.
LAT...LON 4324 11089 4327 11097 4320 11103 4307 11104
4299 11105 4298 11105 4295 11104 4319 11068
$$
SMITH2 follow-up statements
000
WWUS55 KRIW 051959
SVSRIW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
159 PM MDT WED SEP 5 2007
WYC023-052030-
/O.CON.KRIW.TO.W.0009.000000T0000Z-070905T2030Z/
LINCOLN WY-
159 PM MDT WED SEP 5 2007
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR
NORTHWESTERN LINCOLN COUNTY...
AT 154 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR STEWART PEAK...OR
ABOUT 26 MILES NORTH OF AFTON...MOVING NORTHEAST AT 15 MPH.
THE TORNADO WILL BE NEAR...
U.S. HWY 26/89 MILE MARKER 120 BY 210 PM MDT...
U.S. HWY 26/89 MILE MARKER 130 BY 230 PM MDT...
MOVE INTO A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. ABANDON MOBILE HOMES AND VEHICLES.
REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.
LAT...LON 4324 11089 4327 11097 4320 11103 4308 11103
4306 11102 4306 11097 4306 11094 4320 11071
4322 11078 4324 11084
$$
SMITH000
WWUS55 KRIW 052020
SVSRIW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
220 PM MDT WED SEP 5 2007
WYC023-052030-
/O.CAN.KRIW.TO.W.0009.000000T0000Z-070905T2030Z/
LINCOLN WY-
220 PM MDT WED SEP 5 2007
...THE TORNADO WARNING FOR NORTHWESTERN LINCOLN COUNTY IS
CANCELLED...
THE STORM HAS EXITED THE WARNED AREA. THEREFORE...THE WARNING HAS
BEEN CANCELLED.
REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.
LAT...LON 4324 11089 4327 11097 4320 11103 4308 11103
4306 11102 4306 11097 4306 11094 4320 11071
4322 11078 4324 11084
$$
SMITHThe office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 6:56 PM MDT | Severe Thunderstorm Warning | RIW | Teton | 49 min |
| Sep 5, 2:52 AM MDT | Flash Flood Watch | RIW | Big Horn, Fremont, Hot Springs, Johnson, Lincoln, Natrona and 5 more | 23 hr |
| Sep 5, 1:31 PM MDT | Severe Thunderstorm Warning | RIW | Lincoln | 44 min |
| Sep 5, 1:37 PM MDT | Severe Thunderstorm Warning | RIW | Lincoln | 38 min |
| Sep 5, 2:03 PM MDT | Flash Flood Warning | RIW | Lincoln, Sublette, Teton | 3 hr |
| Sep 5, 2:03 PM MDT | Tornado Warning | RIW | Teton | 27 min |
| Sep 5, 2:13 PM MDT | Severe Thunderstorm Warning | RIW | Lincoln, Sublette | 47 min |
| Sep 5, 2:30 PM MDT | Special Weather Statement | RIW | Teton | 60 min |
| Sep 5, 2:41 PM MDT | Severe Thunderstorm Warning | RIW | Teton | 43 min |
| Sep 5, 2:52 PM MDT | Flash Flood Warning | RIW | Park | 3 hr |
| Sep 5, 2:52 PM MDT | Severe Thunderstorm Warning | RIW | Sublette | 24 min |
| Sep 5, 3:00 PM MDT | Special Weather Statement | RIW | Sweetwater | 60 min |
| Sep 5, 3:19 PM MDT | Special Weather Statement | RIW | Sublette | 56 min |
| Sep 5, 4:08 PM MDT | Special Weather Statement | RIW | 67 min | |
| Sep 5, 4:30 PM MDT | Special Weather Statement | RIW | 60 min | |
| Sep 5, 4:41 PM MDT | Special Weather Statement | RIW | 64 min | |
| Sep 5, 5:33 PM MDT | Special Weather Statement | RIW | Fremont, Hot Springs | 57 min |
Nearby
Tornado Warnings in Wyoming, 2007Every tornado warning in 2007Tornadoes in 2007
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.