Alert archive / Wyoming / Tornado Warnings in 2006
Tornado Warning 3, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at May 21, 2006, 12:33 PM MDT for Converse County, Wyoming. It was in force for 27 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
- May 21, 2006, 12:33 PM MDT (18:33 UTC)
- Expired
- May 21, 2006, 1:00 PM MDT
- In force
- 27 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), 193 km from the middle of the area, began a volume at 18:33 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 nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 6.6 hours before the alert went out and 234 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
- 279 J/kg
- Mixed-layer CIN
- -288 J/kg
- Mixed-layer LCL
- 1777 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 166 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 KCYS 211834 TORCYS WYC009-211900- /O.NEW.KCYS.TO.W.0003.060521T1833Z-060521T1900Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 1233 PM MDT SUN MAY 21 2006 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * TORNADO WARNING FOR... CENTRAL CONVERSE COUNTY IN EAST CENTRAL WYOMING... THIS INCLUDES THE CITY OF DOUGLAS... * UNTIL 100 PM MDT * AT 1226 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD ABOUT 5 TO 10 MILES WEST OF DOUGLAS...MOVING EAST AT 20 MPH. THE FUNNEL MAY BRIEFLY TOUCHDOWN THROUGH 1 PM. * THE POSSIBLE TORNADO IS EXPECTED TO BE NEAR... DOUGLAS BY 100 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. LAT...LON 4286 10575 4264 10567 4270 10521 4294 10534 $$
2 follow-up statements
000 WWUS55 KCYS 211846 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1245 PM MDT SUN MAY 21 2006 WYC009-211900- /O.CON.KCYS.TO.W.0003.000000T0000Z-060521T1900Z/ CONVERSE WY- 1245 PM MDT SUN MAY 21 2006 ...A TORNADO WARNING CONTINUES UNTIL 100 PM MDT FOR CENTRAL CONVERSE COUNTY... AT 1245 PM MDT...WEATHER SPOTTERS STILL CAN SEE A FUNNEL CLOUD JUST WEST OF DOUGLAS. NO REPORTS OF THE FUNNEL TOUCHING DOWN HAVE BEEN RECEIVED SO FAR. THE PARENT STORM WAS MOVING EAST AT 25 MPH. THE FUNNEL CLOUDY OR POSSIBLE TORNADO WILL BE NEAR... DOUGLAS BY 100 PM MDT... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4286 10575 4264 10567 4270 10521 4294 10534 $$
000 WWUS55 KCYS 211900 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 100 PM MDT SUN MAY 21 2006 WYC009-211910- /O.EXP.KCYS.TO.W.0003.000000T0000Z-060521T1900Z/ CONVERSE WY- 100 PM MDT SUN MAY 21 2006 ...THE TORNADO WARNING FOR CENTRAL CONVERSE COUNTY EXPIRES AT 100 PM MDT... AT 1257PM SPOTTERS REPORT THAT THE FUNNEL HAS DISSIPATED IN THE VICINITY OF DOUGLAS. THE PARENT STORM LOCATED JUST WEST OF DOUGLAS WAS ALSO WEAKENING. HENCE...THE WARNING WILL EXPIRE AT 1 PM. NO REPORTS OF A TOUCHDOWN HAVE BEEN RECEIVED HERE AT THE NATIONAL WEATHER SERVICE SO FAR. LAT...LON 4286 10575 4264 10567 4270 10521 4294 10534 $$
Nearby
Tornado Warnings in Wyoming, 2006Every tornado warning in 2006Tornadoes in 2006
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.