Alert archive / Wyoming / Tornado Warnings in 2002

Tornado Warning 1, NWS Cheyenne, WY

August 24, 2002Laramie County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Aug 24, 2002, 1:32 PM MDT for Laramie County, Wyoming. It was in force for 28 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: Aug 24, 2002, 1:32 PM MDT (19:32 UTC)
Expired: Aug 24, 2002, 2:00 PM MDT
In force: 28 min
Issued by: NWS Cheyenne, WY
Area: Counties, with a storm outline in the text

County Laramie County, WY

The radar

The Cheyenne radar (KCYS), 29 km from the middle of the area, began a volume at 19:32 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

Denver, CO (KDNR), launched 12:00Z, 7.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 80 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1878 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: -45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

288 
WFUS55 KCYS 241932
TORCYS
WYC021-242000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
131 PM MDT SAT AUG 24 2002

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN LARAMIE COUNTY IN SOUTHEAST WYOMING

* UNTIL 200 PM MDT

* AT 126 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO OVER WEST CENTRAL
  LARAMIE COUNTY...OR ABOUT 17 MILES NORTHWEST OF WARREN AFB...MOVING
  EAST AT 20 MPH.

THE TORNADO WARNING DOES NOT INCLUDE THE CITY OF CHEYENNE. 

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.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT SATURDAY EVENING 
FOR THE PANHANDLE OF NEBRASKA AND PORTIONS OF SOUTHEAST WYOMING.

STARK

WCJIN-WYSE

LAT...LON 4147 10523 4104 10523 4103 10486 4149 10488

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 23, 8:33 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	57 min
Aug 24, 4:25 PM MDT	Tornado Warning	CYS	Goshen	35 min
Aug 24, 5:29 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Laramie	31 min

Nearby

Tornado Warnings in Wyoming, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.