Alert archive / Wyoming / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 12, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 8, 1986, 2:13 PM MDT for Platte County, Wyoming. It was in force for 47 min.
The area
The counties it named.
The facts
- Issued
- Jun 8, 1986, 2:13 PM MDT (20:13 UTC)
- Expired
- Jun 8, 1986, 3:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Platte County, WY
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 8.2 hours before the alert went out and 291 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
- 117 J/kg
- Mixed-layer CIN
- -286 J/kg
- Mixed-layer LCL
- 776 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 8, 10:27 AM MDT, 3 hours 46 minutes before
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</html>Special weather statement, Jun 8, 1:41 PM MDT, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 140 PM MDT SUN JUN 8 1986 THE FLASH FLOOD WATCH FOR EASTERN WYOMING IS NOT LONGER IN EFFECT. THE NATIONAL WEATHER SERVICE HAS LIFTED THE WATCH FOR THIS SUNDAY NIGHT. SCATTERED THUNDERSHOWERS ARE FORECAST FOR MUCH OF THE STATE THROUGH THE EVENING HOURS WITH ISOLATED THUNDERSTORMS IN CENTRAL AND EASTERN WYOMING UNTIL 10PM THIS SUNDAY EVENING. A FEW THUNDERSTORMS MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL AND GUSTY WINDS. THESE THUNDERSTORMS WILL BE MOVING TO THE EAST AND NORTHEAST. IF THREATENING WEATHER APPROACHS TAKE COVER IMMEDIATELY. REPORT ANY SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY. SGS=
Special weather statement, Jun 8, 2:05 PM MDT, 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 205 PM MDT SUN JUN 8 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR SOUTHEASTERN WYOMING UNTIL 8 PM MDT THIS EVENING INCLUDING THE FOLLOWING COUNTIES... ALL OF LARAMIE...PLATTE...AND GOSHEN COUNTIES THE SOUTHERN PARTS OF CONVERSE AND NIOBRARA COUNTIES THE SOUTHEAST PART OF NATRONA COUNTY THE EASTERN PART OF ALBANY COUNTY LOW LEVEL MOISTURE COMBINED WITH SURFACE HEATING AND UPSLOPE WINDS COULD CAUSE DANGEROUS THUNDERSHOWERS TO DEVELOP THROUGH THE AFTERNOON. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN TQHESE AREAS SHOULD BE AWARE OF THREATENING WEATHER CONDITIONS. ALSO... LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST STATEMENTS OR WARNINGS. MENTZER
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 8:37 PM MDT | Tornado Warning | CYS | Scotts Bluff, Sioux | 23 min |
| Jun 7, 9:02 PM MDT | Tornado Warning | CYS | Scotts Bluff, Sioux | 28 min |
| Jun 7, 6:15 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 45 min |
| Jun 7, 6:58 PM MDT | Tornado Warning | CYS | Goshen, Platte | 47 min |
| Jun 7, 7:50 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 55 min |
| Jun 7, 8:20 PM MDT | Tornado Warning | CYS | Goshen | 40 min |
| Jun 8, 5:08 PM MDT | Tornado Warning | CYS | Laramie | 52 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1986Every severe thunderstorm warning in 1986
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.