Alert archive / Wyoming / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 73, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 3, 1986, 6:10 PM MDT for Goshen County, Platte County, Wyoming. It was in force for 50 min. 1 report 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
- Aug 3, 1986, 6:10 PM MDT (00:10 UTC)
- Expired
- Aug 3, 1986, 7:00 PM MDT
- In force
- 50 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Goshen County, WY, Platte 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 |
|---|---|---|---|
| Aug 3, 6:12 PM MDT | Hail 1.75 | Platte, 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
Rapid City, SD (KRAP), launched 00:00Z, 0.2 hours before the alert went out and 261 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
- 1228 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1957 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 040011 SVRCYS WYC031-015-040100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 610 PM MDT SUN AUG 3 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST WYOMING..EASTERN PLATTE AND CENTRAL GOSHEN. THIS SEVERE THUNDERSTORM WARNING INCLUDES THE TOWNS OF GUERNSEY AND LINGLE. AT 605 PM RADAR INDICATED A SEVERE THUNDERSTORM OVER THE TOWN OF GUERNSEY OR ABOUT 80 MILES NORTH OF CHEYENNE. PEOPLE IN EXTREME EASTERN PLATTE COUNTY AND CENTRAL GOSHEN COUNTY OF SOUTHEAST WYOMING SHOULD SEEK A REINFORCED SHELTER IMMEDIATELY. THIS STORM WILL PRODUCE LARGE HAIL...HEAVY RAINS AND INTENSE LIGHTNING. HATTEN
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, Aug 3, 1:48 PM MDT, 4 hours 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 145 PM MDT SUN AUG 3 1986 A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF EASTERN WYOMING UNTIL 9 PM MDT THIS SUNDAY EVENING. TOWNS INCLUDED IN THIS WATCH ARE CHEYENNE...WHEATLAND...TORRINGTON....LUSK...AND NEWCASTLE. AT 130 PM THIS AFTERNOON...WEATHER RADAR INDICATED THAT THUNDERSHOWERS HAD ALREADY BEGUN TO DEVELOP OVER THE SOUTHEAST CORNER OF WYOMING. THESE SHOWERS WERE MOVING TOWARD THE SOUTHEAST AT 25 MILES PER HOUR. MOIST UPSLOPE LOW LEVEL FLOW COMBINED WITH SURFACE HEATING WILL CONTINUE TO TRIGGER THUNDERSHOWERS THROUGH THIS AFTERNOON AND EVENING. SOME OF THESE THUNDERSHOWERS WILL CONTAIN LARGE HAIL...DAMAGING WINDS... AND BRIEF HEAVY RAIN. REMEMBER...LIGHTNING ALSO IS VERY DANGEROUS. IF YOU SEE THREATENING WEATHER...SEEK SHELTER IMMEDIATELY. PLEASE INFORM YOUR LOCAL LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE OF ANY SEVERE WEATHER AFTER THE DANGER HAS PASSED. MENTZER
Special weather statement, Aug 3, 2:34 PM MDT, 3 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 230 PM MDT SUN AUG 3 1986 ...SEVERE THUNDERSTORMS WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE NEBRASKA PANHANDLE... AT 230 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 45 MILES NORTHWEST OF CHADRON NEBRASKA...NEAR HOT SPRINGS SOUTH DAKOTA...MOVING SOUTHEAST AT 25 MILES AN HOUR. THIS STORM WILL MOVE INTO THE NORTHERN PORTIONS OF DAWES AND SHERIDAN COUNTIES OF THE PANHANDLE AROUND 4PM MDT THIS AFTERNOON. LOCALLY HEAVY RAIN..STRONG GUSTY WIND AND HAIL ARE POSSIBLE WITH THIS THUNDERSTORM. THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING. PF EIFFER
Special weather statement, Aug 3, 3:44 PM MDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 343 PM MDT SUN AUG 3 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE NEBRASKA PANHANDLE... AT 340 PM MDT...RADAR INDICATED THUNDERSTORMS DEVELOPING ALONG THE FRONT RANGE OF THE ROCKIES...FROM NEAR FORT COLLINS COLORADO NORTHWARD TO EAST OF CASPER AND NEAR NEWCASTLE WYOMING. THESE STORMS WERE MOVING SLOWLY SOUTHEAST AT 10 TO 15 MILES AN HOUR AND ARE NOT EXPECTED TO ENTER THE NEBRASKA PANHANDLE UNTIL AFTER 5PM MDT THIS AFTERNOON. ISOLATED THUNDERSHOWERS IN THE SOUTHERN BLACK HILLS NEAR HOT SPRINGS SOUTH DAKOTA WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. THE SEVERE THUNDERSTORM WATCH NUMBER n463 REMAINS IN EFFECT FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING. PFEIFFER
Special weather statement, Aug 3, 4:40 PM MDT, 1 hour 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 440 PM MDT SUN AUG 3 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE NEBRASKA PANHANDLE... AT 435 PM MDT...THUNDERSTORMS CONTINUED TO DEVELOP ALONG THE FRONT RANGE OF THE ROCKIES...FROM EAST OF FORT COLLINS COLORADO NORTHWARD TO DOUGLAS AND NEAR NEWCASTLE WYOMING. THESE STORMS WERE MOVING SLOWLY SOUTHEAST AT 15 TO 20 MILES AN HOUR AND ARE NOT EXPECTED TO ENTER THE NEBRASKA PANHANDLE UNTIL AFTER 6PM MDT THIS AFTERNOON. ISOLATED THUNDERSHOWERS IN THE BLACK HILLS NEAR RAPID CITY SOUTH DAKOTA WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. OTHER THUNDERSHOWERS WERE DEVELOPING ALONG THE PINE RIDGE IN THE NEBRASKA PANHANDLE NEAR CRAWFORD. THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING. PFEIFFER
Special weather statement, Aug 3, 5:45 PM MDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 545 PM MDT SUN AUG 3 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE NEBRASKA PANHANDLE... AT 440 PM MDT...THUNDERSTORMS CONTINUED IN EASTERN WYOMING BETWEEN CHEYENNE AND LARAMIE NORTHWARD TO NEAR DOUGLAS AND LUSK WYOMING. THESE STORMS WERE MOVING SOUTHEAST AROUND 20 MILES AN HOUR AND WERE EXPECTED TO ENTER THE NEBRASKA PANHANDLE AFTER 6PM MDT THIS EVENING. ISOLATED THUNDERSHOWERS IN SOUTHWESTERN SOUTH DAKOTA EAST OF RAPID CITY WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. OTHER THUNDERSHOWERS WERE IN THE NORTHWESTERN PANHANDLE ALONG THE PINE RIDGE WEST OF CRAWFORD. THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING. PFEIFFER
Special weather statement, Aug 3, 5:47 PM MDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 545 PM MDT SUN AUG 3 1986 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE NEBRASKA PANHANDLE... AT 540 PM MDT...THUNDERSTORMS CONTINUED IN EASTERN WYOMING BETWEEN CHEYENNE AND LARAMIE NORTHWARD TO NEAR DOUGLAS AND LUSK WYOMING. THESE STORMS WERE MOVING SOUTHEAST AROUND 20 MILES AN HOUR AND WERE EXPECTED TO ENTER THE NEBRASKA PANHANDLE AFTER 6PM MDT THIS EVENING. ISOLATED THUNDERSHOWERS IN SOUTHWESTERN SOUTH DAKOTA EAST OF RAPID CITY WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. OTHER THUNDERSHOWERS WERE IN THE NORTHWESTERN PANHANDLE ALONG THE PINE RIDGE WEST OF CRAWFORD. THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING. PFEIFFER
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.