Alert archive / Wyoming / Tornado Warnings in 2005
Tornado Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Aug 12, 2005, 7:02 PM MDT for Converse County, Wyoming. It was in force for 43 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
- Aug 12, 2005, 7:02 PM MDT (01:02 UTC)
- Expired
- Aug 12, 2005, 7:45 PM MDT
- In force
- 43 min
- Issued by
- NWS Cheyenne, WY
- Area
- Counties, with a storm outline in the text
County Converse County, WY
The radar
The Cheyenne radar (KCYS), 202 km from the middle of the area, began a volume at 01:03 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 |
|---|---|---|---|
| Aug 12, 7:05 PM MDT | TORNADO | 13 N Douglas, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 12, 4:05 PM MDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 1.0 hours before the alert went out and 232 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
- 580 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 226 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KCYS 130104 TORCYS WYC009-130145- /O.NEW.KCYS.TO.W.0013.050813T0102Z-050813T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 702 PM MDT FRI AUG 12 2005 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * TORNADO WARNING FOR... EAST CENTRAL CONVERSE COUNTY IN EAST CENTRAL WYOMING * UNTIL 745 PM MDT * AT 653 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR RED ROCK SPRING...OR ABOUT 14 MILES NORTH OF DOUGLAS...MOVING EAST SOUTHEAST AT 20 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... RURAL CENTRAL CONVERSE COUNTY AT 720 PM MDT RURAL EASTERN CONVERSE COUNTY AT 730 PM MDT THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT FRIDAY EVENING FOR SOUTHEASTERN WYOMING. LAT...LON 4303 10554 4287 10557 4276 10491 4297 10491 $$ SOWKO
2 follow-up statements
000 WWUS55 KCYS 130112 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 710 PM MDT FRI AUG 12 2005 WYC009-130145- /O.CON.KCYS.TO.W.0013.000000T0000Z-050813T0145Z/ CONVERSE WY- 710 PM MDT FRI AUG 12 2005 ...A TORNADO WARNING CONTINUES UNTIL 745 PM MDT FOR EAST CENTRAL CONVERSE COUNTY... AT 705 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 13 MILES NORTH OF DOUGLAS NEAR RED ROCK SPRING...MOVING EAST SOUTHEAST AT 20 MPH. THE TORNADO WILL BE NEAR... RURAL CENTRAL CONVERSE COUNTY AT 720 PM MDT RURAL EASTERN CONVERSE COUNTY AT 740 PM MDT THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT FRIDAY EVENING FOR SOUTHEASTERN WYOMING. LAT...LON 4303 10554 4287 10557 4276 10491 4297 10491 $$ SOWKO
000 WWUS55 KCYS 130143 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 740 PM MDT FRI AUG 12 2005 WYC009-130150- /O.EXP.KCYS.TO.W.0013.000000T0000Z-050813T0145Z/ CONVERSE WY- 740 PM MDT FRI AUG 12 2005 ...THE TORNADO WARNING FOR EAST CENTRAL CONVERSE COUNTY EXPIRES AT 745 PM MDT... AT 742 PM WEATHER SERVICE RADAR INDICATED THAT THE ROTATION IN THE STORM HAD WEAKENED SIGNIFICANTLY. NO FURTHER REPORTS OF A TORNADO TOUCHDOWN HAVE BEEN RECEIVED...THUS THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT FRIDAY EVENING FOR SOUTHEASTERN WYOMING. LAT...LON 4303 10554 4287 10557 4276 10491 4297 10491 $$ SOWKO
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 6:32 PM MDT | Tornado Warning | CYS | Converse | 31 min |
| Aug 12, 6:57 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 33 min |
Nearby
Tornado Warnings in Wyoming, 2005Every tornado warning in 2005Tornadoes in 2005
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.