Alert archive / Wyoming / Tornado Warnings in 2007
Tornado Warning 2, NWS Riverton, WY
NWS Riverton, WY issued this tornado warning at Jun 16, 2007, 5:16 PM MDT for Johnson County, Wyoming. It was in force for 29 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 16, 2007, 5:16 PM MDT (23:16 UTC)
- Expired
- Jun 16, 2007, 5:45 PM MDT
- In force
- 29 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), 228 km from the middle of the area, began a volume at 23:18 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 |
|---|---|---|---|
| Jun 16, 4:10 PM MDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 11.3 hours before the alert went out and 223 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
- 460 J/kg
- Mixed-layer CIN
- -302 J/kg
- Mixed-layer LCL
- 1749 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KRIW 162316 TORRIW WYC019-162345- /O.NEW.KRIW.TO.W.0002.070616T2316Z-070616T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE RIVERTON WY 516 PM MDT SAT JUN 16 2007 THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A * TORNADO WARNING FOR... EAST CENTRAL JOHNSON COUNTY IN NORTH CENTRAL WYOMING... * UNTIL 545 PM MDT * AT 514 PM MDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM WITH STRONG ROTATION 6 MILES NORTH OF I90 EXIT 82...OR ABOUT 21 MILES EAST OF BUFFALO...MOVING EAST AT 35 MPH. * THE TORNADO WILL BE NEAR... I90 EXIT 91 BY 525 PM MDT... I90 MILE MARKER 95 BY 530 PM MDT... IF YOU ARE NEAR THE PATH OF THIS TORNADO...TAKE COVER IN AN INTERIOR ROOM ON THE LOWEST FLOOR. PROTECT YOUR HEAD AND BODY FROM FLYING DEBRIS. THIS IS A DANGEROUS STORM ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO THE LOWEST FLOOR OF A STURDY BUILDING. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4437 10634 4419 10633 4416 10603 4440 10603 $$ JONES
2 follow-up statements
000 WWUS55 KRIW 162332 SVSRIW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 532 PM MDT SAT JUN 16 2007 WYC019-162345- /O.CON.KRIW.TO.W.0002.000000T0000Z-070616T2345Z/ JOHNSON WY- 532 PM MDT SAT JUN 16 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR EAST CENTRAL JOHNSON COUNTY... AT 527 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR I90 EXIT 91...OR ABOUT 30 MILES EAST OF BUFFALO...MOVING EAST AT 35 MPH. IF YOU ARE NEAR THE PATH OF THIS TORNADO...TAKE COVER IN AN INTERIOR ROOM ON THE LOWEST FLOOR. PROTECT YOUR HEAD AND BODY FROM FLYING DEBRIS. THIS IS A DANGEROUS STORM ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO THE LOWEST FLOOR OF A STURDY BUILDING. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4437 10634 4419 10633 4416 10603 4440 10603 $$ JONES
000 WWUS55 KRIW 162344 SVSRIW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 544 PM MDT SAT JUN 16 2007 WYC019-162353- /O.EXP.KRIW.TO.W.0002.000000T0000Z-070616T2345Z/ JOHNSON WY- 543 PM MDT SAT JUN 16 2007 ...THE TORNADO WARNING FOR EAST CENTRAL JOHNSON COUNTY EXPIRES AT 545 PM MDT... THE STORM HAS EXITED THE WARNED AREA. THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE. ANOTHER TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN JOHNSON COUNTY UNTIL 615 PM MDT. THIS SOUTHERN STORM REMAINS DANGEROUS AND PEOPLE IN THE WARNED AREA AROUND AND SOUTH OF KAYCEE SHOULD SEEK IMMEDIATE SHELTER. REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT 1-800-211-1448. LAT...LON 4437 10634 4419 10633 4416 10603 4440 10603 $$ JONES
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 5:23 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 67 min |
| Jun 16, 5:30 PM MDT | Tornado Warning | RIW | Johnson | 45 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.