Alert archive / Wyoming / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 49, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 29, 1992, 7:37 PM MDT for Laramie County, Wyoming. It was in force for 53 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
- Jun 29, 1992, 7:37 PM MDT (01:37 UTC)
- Expired
- Jun 29, 1992, 8:30 PM MDT
- In force
- 53 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 29, 7:45 PM MDT | Hail 0.75 | 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 00:00Z, 1.6 hours before the alert went out and 202 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
- NaN m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 55 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 300138 SVRCYS WYC021-300230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 737 PM MDT MON JUN 29 1992 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...SOUTHEASTERN LARAMIE COUNTY THIS INCLUDES THE CITIES OF CARPENTER...BURNS...EGBERT AND PINE BLUFFS. AT 735 PM...RADAR INDICATED A SEVERE THUNDERSTORM JUST SOUTHWEST OF CARPERNTER...OR 22 MILES SOUTHEAST OF CHEYENNE. THE SEVERE STORM WAS MOVING TO THE NORTHEAST AT 25 MILES AN HOUR. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. WEILAND
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 29, 1:59 PM MDT, 5 hours 38 minutes before
WYZ001-002-003-004-005-006-007-018-019-050-051-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 155 PM MDT MON JUN 29 1992 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR NORTHWEST AND NORTH CENTRAL WYOMING UNTIL 800 PM... THE NATIONAL SEVERE STORMS FORECAST CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR MUCH OF NORTHWEST AND NORTH CENTRAL WYOMING UNTIL 800 PM. THE WATCH INCLUDES THE CITIES OF SHERIDAN...WORLAND... CODY AND LOVELL AS WELL AS ALL OF YELLOWSTONE NATIONAL PARK. THIS SEVERE THUNDERSTORM WATCH MEANS THAT WEATHER CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS TO DEVELOP. A SEVERE THUNDERSTORM IS ONE THAT PRODUCES THREE QUARTER OF AN INCH OR LARGER DIAMETER HAIL AND WIND GUSTS TO 58 MILES AN HOUR OR MORE. SHORTLY BEFORE 100 PM...THE JACKSON AIRPORT RECORDED A WIND GUST TO 54 MILES AN HOUR FROM NEARBY THUNDERSTORMS. AT 130 PM THUNDERSTORMS WERE WIDESPREAD OVER THE NORTHWEST PART OF THE STATE. THESE STORMS WERE MOVING TO THE NORTHEAST AT 25 MILES AN HOUR. IN ADDITION...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR NORTHWEST AND NORTH CENTRAL WYOMING UNTIL 1000 PM THIS EVENING. PEOPLE IN NORTHWEST AND NORTH CENTRAL WYOMING SHOULD BE ALERT TO THE POSSIBILITY OF INTENSE THUNDERSTORMS THROUGH THE EVENING HOURS. THE STORMS MAY PRODUCE HEAVY RAIN...LARGE HAIL...STRONG WIND GUSTS AND DANGEROUS LIGHTNING. WHEN A STORM APPROACHES MOVE INDOORS OR TO AN APPROPRIATE SHELTER. WEILAND
Special weather statement, Jun 29, 2:50 PM MDT, 4 hours 47 minutes before
WYZ051>055-057-058>062-066>073-292300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 250 PM MDT MON JUN 29 1992 ...A TORNADO WATCH HAS BEEN ISSUED FOR MUCH OF EASTERN WYOMING UNTIL
Special weather statement, Jun 29, 4:30 PM MDT, 3 hours 7 minutes before
WYZ069-300030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 430 PM MDT MON JUN 29 1992 ...MORE STRONG THUNDERSTORMS HAVE DEVELOPED SOUTHWEST OF WHEATLAND... AT 415 PM...INTENSE THUNDERSTORMS WERE LOCATED 20 MILES SOUTHWEST OF WHEATLAND. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. THE STORMS WILL MOVE OVER A SIMILAR PATH OF THE STORMS THAT OCCURRED AROUND 330 PM. THE STORMS WILL PRODUCE HEAVY RAIN...HAIL...STRONG WIND GUSTS AND DANGEROUS LIGHTNING. IN ADDITION...DUE TO THE SAME PATH OF THESE STORMS...FLOODING OF SYBILLE CREEK IS POSSIBLE. PEOPLE TO THE SOUTHWEST OF WHEATLAND AND IN RHE WHEATLAND AREA SHOULD EXPECT MORE THUNDERSTORMS BY 500 PM. BE PREPARED FOR FLOODING...AND MOVE TO HIGHER GROUND IF STREAMS BEGIN TO RISE. WEILAND
Special weather statement, Jun 29, 6:18 PM MDT, 1 hour 19 minutes before
WYZ001-002-300120- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 620 PM MDT MON JUN 29 1992 ...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR YELLOWSTONE NATIONAL PARK... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE SEVERE THUNDERSTORM WATCH FOR YELLOWSTONE NATIONAL PARK. THUNDERSTORM ACTIVITY HAD DECREASED IN COVERAGE AND INTENSITY ACROSS THIS AREA AS OF 6 PM. HOWEVER...A FLASH FLOOD WATCH REMAINS IN EFFECT FOR NORTHWEST AND NORTH CENTRAL WYOMING UNTIL 1000 PM THIS EVENING. PEOPLE IN FAR NORTHWEST WYOMING SHOULD REMAIN ALERT TO THE POSSIBILITY OF STRONG THUNDERSTORMS THE REST OF THE EVENING. A FEW OF THESE STORMS MAY PRODUCE LOCALLY HEAVY RAIN AND GUSTY WINDlS AND DANGEROUS LIGHTNING. WHEN A STORM APPROACHES MOVE INDOORS OR TO AN APPROPRIATE SHELTER. AR/SGS
Special weather statement, Jun 29, 7:22 PM MDT, 15 minutes before
WYZ072-073-300220- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 720 PM MDT MON JUN 29 1992 ...AN INTENSE THUNDERSTORM HAS DEVELOPED RAPIDLY JUST TO THE SOUTH OF EXTREME SOUTHEAST WYOMING... AN INTENSE THUNDERSTORM HAS DEVELOPED RAPIDLY SINCE 710 PM...20 MILES SOUTHEAST OF CHEYENNE. THE STORM WAS STILL IN COLORADO...BUT WILL MOVE ACROSS THE CITIES OF CARPENTER AND PINE BLUFFS BY BETWEEN 730 PM AND 815 PM. THIS THUNDERSTORM WILL LIKELY PRODUCE HAIL...GUSTY WINDS...HEAVY RAIN AND DANGEROUS LIGHTNING AS IT MOVES ACROSS EXTREME SOUTHEAST WYOMING. IN ADDITION...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN WYOMING UNTIL 900 PM. PEOPLE IN THE CITIES OF CARP#ENTER AND PINE BLUFFS SHOULD BE PREPARED FOR THE INTENSE THUNDERSTORM. WHEN THE STORM APPROACHES...MOVE INDOORS TO A SAFE SHELTER. WEILAND
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 6:03 PM MDT | Severe Thunderstorm Warning | CYS | Sheridan | 27 min |
| Jun 29, 6:59 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 46 min |
| Jun 29, 7:55 PM MDT | Tornado Warning | CYS | Platte | 35 min |
| Jun 29, 8:31 PM MDT | Tornado Warning | CYS | Goshen, Platte | 29 min |
| Jun 30, 12:51 PM MDT | Severe Thunderstorm Warning | CYS | Big Horn | 32 min |
| Jun 30, 2:56 PM MDT | Severe Thunderstorm Warning | CYS | Johnson | 26 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1992Every severe thunderstorm warning in 1992
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.