Alert archive / Wyoming / Tornado Warnings in 1990
Tornado Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at May 24, 1990, 3:18 PM MDT for Goshen County, Laramie County, Wyoming. It was in force for 42 min. 4 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 24, 1990, 3:18 PM MDT (21:18 UTC)
- Expired
- May 24, 1990, 4:00 PM MDT
- In force
- 42 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Goshen County, WY, Laramie County, WY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 24, 3:45 PM MDT | Tornado F1 | Laramie, WY | |
| May 24, 3:55 PM MDT | Tornado F1 | Laramie, WY | |
| May 24, 4:05 PM MDT | Tornado F1 | Goshen, WY | |
| May 24, 4:10 PM MDT | Tornado F1 | Laramie, WY |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 9.3 hours before the alert went out and 230 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1956 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KCYS 242118
TORCYS
WYC015-021-242200-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
318 PM MDT THU MAY 24 1990
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 400 PM MDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHEAST WYOMING
...SOUTHERN GOSHEN...NORTHERN LARAMIE
AT 312 PM MDT A TORNADO WAS REPORTED BY THE HIGHWAY PARTOL
25 MILES NORTH OF CHEYENNE OR ABOUT 15 MILES SOUTH OF CHUGWATER.
ANOTHER TORNADO WAS REPORTED BY MILITARY PERSONNEL AT 314 PM MDT
IN EXTREME SOUTHWEST GOSHEN COUNTY ABOUT 20 MILES SOUTHWEST OF
TORRINGTON.
THE THUNDERSTORMS PRODUCING THE TORNADOES WERE MOVING NORTHEAST
AT 15 MILES AN HOUR.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
JLHThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 2:00 PM MDT | Tornado Warning | CYS | Platte | 45 min |
| May 24, 2:35 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 55 min |
| May 24, 2:50 PM MDT | Tornado Warning | CYS | Laramie | 25 min |
| May 24, 4:13 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 62 min |
| May 24, 4:49 PM MDT | Tornado Warning | CYS | Laramie | 56 min |
| May 24, 5:46 PM MDT | Tornado Warning | CYS | Goshen, Laramie | 59 min |
Nearby
Tornado Warnings in Wyoming, 1990Every tornado warning in 1990Tornadoes in 1990
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.