Alert archive / Wyoming / Tornado Warnings in 1986
Tornado Warning 1, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at May 6, 1986, 10:40 PM MDT for Goshen County, Laramie County, Wyoming. It was in force for 23 min.
The area
The counties it named.
The facts
- Issued
- May 6, 1986, 10:40 PM MDT (04:40 UTC)
- Expired
- May 6, 1986, 11:03 PM MDT
- In force
- 23 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.
The nearest sounding before it
Rapid City, SD (KRAP), launched 00:00Z, 4.7 hours before the alert went out and 296 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
- 1419 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 154 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 tornado 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, May 6, 6:10 PM MDT, 4 hours 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 605 PM MDT TUE MAY 6 1986 ...A WEATHER ADVISORY FOR TRAVEL IS IN EFFECT TONIGHT AND WEDNESDAY FOR THE NORTHWEST MOUNTAINS OF WYOMING...WITH AN ADVISORY FOR LIVESTOCK IN EFFECT FOR SOUTHWEST SECTIONS TONIGHT AND WEDNESDAY... A DEVELOPING STORM SYSTEM OVER NEVADA WILL BRING SNOW TO THE MOUNTAINS OF FAR WESTERN AND NORTHWEST WYOMING TONIGHT INTO WEDNESDAY. MOST OF THE SNOWFALL WILL BE IN THE HIGHER ELEVATIONS...UP TO 8 INCHES...WITH ABOUT 2 TO 4 INCHES IN THE VALLEYS. TRAVELERS SHOULD USE CAUTION DUE TO SLICK ROADS TONIGHT AND WEDNESDAY. LIGHT RAIN AND SNOW IN SOUTHWEST WYOMING WILL BECOME MOSTLY SNOW THIS EVENING. THE COLD WET SNOW WILL PRESENT A HAZARD TO YOUNG LIVESTOCK THROUGH WEDNESDAY. SOME ACCUMULATIONS ARE LIKELY IN THE MOUNTAINS WEST OF EVANSTON...UP TO 4 INCHES. WITH THE START OF EVENING LIGHT RAIN WAS SCATTERED ABOUT SOUTHWEST WYOMING. LIGHT SNOW HAD SPREAD FROM THE MOUNTAINS INTO THE JACKSON HOLE AREA. THE MAIN PART OF THE STORM WILL NOT AFFECT THE REST OF WYOMING UNTIL LATE WEDNESDAY NIGHT INTO THURSDAY. AS COLDER AIR EDGES INTO EASTERN WYOMING...THERE IS A GOOD CHANCE THAT THE PRECIPITATION WILL BE WET SNOW ON THURSDAY. HOWEVER...THE TRACK OF THIS STORM IS STILL IN QUESTION. STAY TUNED TO THIS STATION FOR ADDITIIONAL DETAILS AS THE STORM DEVELOPS. COX
Special weather statement, May 6, 8:07 PM MDT, 2 hours 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 805 PM MDT TUE MAY 6 1986 ...A WEATHER ADVISORY FOR TRAVEL IS IN EFFECT TONIGHT AND WEDNESDAY FOR THE NORTHWEST MOUNTAINS OF WYOMING...WITH AN ADVISORY FOR LIVESTOCK IN EFFECT FOR SOUTHWEST SECTIONS TONIGHT AND WEDNESDAY... A DEVELOPING STORM SYSTEM SPRAWLED FROM NEVADA TO THE COLORADO ROCKIES WILL BRING SNOW TO FAR WEST WYOMING TONIGHT AND WEDNESDAY. MOST OF THE SNOWFALL WILL BE IN THE HIGHER ELEVATIONS...UP TO 8 INCHES...WITH ABOUT 2 TO 4 INCHES IN THE VALLEYS. TRAVELERS SHOULD USE CAUTION DUE TO SLICK ROADS TONIGHT AND WEDNESDAY. AT MID EVENING LIGHT SNOW CONTINUED TO FALL AT THE JACKSON AIRPORT AND AT SEVERAL LOCATIONS IN YELLOWSTONE NATIONAL PARK. SNOW HAD BEEN FALLING HEAVILY AT THE SOUTH ENTRANCE TO THE PARK FOR ABOUT A HALF AN HOUR. LIGHT RAIN AND SNOW IN SOUTHWEST WYOMING WILL BECOME MOSTLY SNOW THIS EVENING. THE COLD WET SNOW WILL PRESENT A HAZARD TO YOUNG LIVESTOCK THROUGH WEDNESDAY. SOME ACCUMULATIONS ARE LIKELY IN THE MOUNTAINS WEST OF EVANSTON...UP TO 4 INCHES. AT MID EVENING RADAR DETECTED SCATTERED LIGHT RAIN AND SNOW IN SOUTHWEST WYOMING. LIGHT RAIN WAS ALSO REPORTED AT SEVERAL LOCATIONS IN THE EAST AND NORTH CENTRAL PARTS. THE MAIN PORTION OF THE STORM WILL NOT AFFECT THE REST OF WYOMING UNTIL LATE WEDNESDAY NIGHT INTO THURSDAY. AS COLDER AIR EDGES INTO EASTERN WYOMING...THERE IS A GOOD CHANCE THAT THE PRECIPITATION WILL BE WET SNOW ON THURSDAY. STAY TUNED TO THIS STATION FOR FURTHER DEVELOPMENTS ON THE STORM. COX
Special weather statement, May 6, 10:05 PM MDT, 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1005 PM MDT TUE MAY 6 1986 ...A WEATHER ADVISORY FOR TRAVEL IS REMAINING IN EFFECT TONIGHT AND WEDNESDAY FOR THE NORTHWEST MOUNTAINS OF WYOMING..WITH AN ADVISORY FOR LIVESTOCK IN EFFECT FOR SOUTHWEST SECTIONS TONIGHT AND WEDNESDAY... A DEVELOPING STORM SYSTEM SPRAWLED FROM NEVADA TO THE COLORADO ROCKIES WILL BRING SNOW TO FAR WEST WYOMING TONIGHT AND WEDNESDAY. MOST OF THE SNOWFALL WILL BE IN THE HIGHER ELEVATIONS...UP TO 8 INCHES...WITH ABOUT 2 TO 4 INCHES IN THE VALLEYS. TRAVELERS SHOULD USE CAUTION DUE TO SLICK ROADS TONIGHT AND WEDNESDAY. SNOW WAS CONTINUING TO FALL IN THE NORTHWEST NEAR JACKSON. MEANWHILE CLOUDY SKIES AND SCATTERED SHOWERS WERE BECOMING MORE NUMEROUS ACROSS THE STATE FROM ROCK SPRINGS TO SHERIDAN. RADAR ALSO INDICATED LIGHT SHOWERS EXTENDED FROM SOUTHEAST TO EAST CENTRAL WYOMING. LIGHT RAIN AND SNOW IN SOUTHWEST WYOMING WILL BECOME MOSTLY SNOW LATER TONIGHT. THE COLD WET SNOW WILL PRESENT A HAZARD TO YOUNG LIVESTOCK THROUGH WEDNESDAY. SOME ACCUMULATIONS ARE LIKELY IN THE MOUNTAINS WEST OF EVANSTON...UP TO 4 INCHES. THE MAIN SECTION OF THE STORM WILL NOT AFFECT THE REST OF WYOMING UNTIL LATE WEDNESDAY NIGHT INTO THURSDAY. AS COLDER AIR SURGES INTO EASTERN WYOMING...THERE IS A GOOD CHANCE THAT THE PRECIPITATION WILL BE WET SNOW ON THURSDAY. STAY TUNED TO YOUR LOCAL MEDIA OR NOAA WEATHER RADIO FOR CONTINUING UiPDATES ON THIS DEVELOPING SPRING STORM. MCRANDAL
Nearby
Tornado Warnings in Wyoming, 1986Every tornado warning in 1986Tornadoes 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.