Alert archive / Wyoming / Tornado Warnings in 2002

Tornado Warning 8, NWS Cheyenne, WY

August 27, 2002Albany County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Aug 27, 2002, 8:13 PM MDT for Albany County, Wyoming. It was in force for 32 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 27, 2002, 8:13 PM MDT (02:13 UTC)
Expired: Aug 27, 2002, 8:45 PM MDT
In force: 32 min
Issued by: NWS Cheyenne, WY
Area: Counties, with a storm outline in the text

County Albany County, WY

The radar

The Cheyenne radar (KCYS), 80 km from the middle of the area, began a volume at 02:12 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 27, 8:18 PM MDT	Tornado F0	Laramie, WY	Brief tornado touchdown in open country.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.2 hours before the alert went out and 273 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: 872 J/kg
Mixed-layer CIN: -168 J/kg
Mixed-layer LCL: 1850 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

366 
WFUS55 KCYS 280213
TORCYS
WYC001-280245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
813 PM MDT TUE AUG 27 2002

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ALBANY COUNTY IN SOUTHEAST WYOMING

* UNTIL 845 PM MDT

* AT 810 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO OVER CENTRAL ALBANY
  COUNTY...OR ABOUT 17 MILES NORTH OF LARAMIE...MOVING SOUTHEAST AT
  20 MPH.

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.

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE
IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

THIS TORNADO WARNING IS AN EXTENSION OF THE PREVIOUS TORNADO WARNING 
FOR CENTRAL ALBANY COUNTY WHICH WAS SET TO EXPIRE AT 815 PM.

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

LAT...LON 4156 10578 4138 10566 4147 10529 4177 10550

COX

WCJIN-WYSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 7:05 PM MDT	Severe Thunderstorm Warning	CYS	Albany	40 min
Aug 27, 7:41 PM MDT	Tornado Warning	CYS	Albany	34 min
Aug 27, 8:45 PM MDT	Tornado Warning	CYS	Albany	45 min
Aug 27, 9:30 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie	45 min
Aug 28, 5:19 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	41 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.