Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 151, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 2, 1996, 6:36 PM MDT for Laramie County, Wyoming. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 2, 1996, 6:36 PM MDT (00:36 UTC)
- Expired
- Aug 2, 1996, 7:15 PM MDT
- In force
- 39 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 00:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 0.6 hours before the alert went out and 341 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
- 918 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 3250 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 030038 SVRCYS WYC021-030115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 636 PM MDT FRI AUG 2 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...NORTHEASTERN LARAMIE COUNTY AT 634 DOPPLER RADAR IN CHEYENNE SHOWED A THUNDERSTORM PRODUCING WINDS IN EXCESS OF 50 MPH 25 MILES NORTHEAST OF CHEYENNE. THIS STORM PRODUCED 56 MPH WINDS AT AN AIR FORCE MISSILE SITE 24 MILES NORTHEAST OF CHEYENNE AT 620 PM MDT. THE STRONG WINDS FROM THIS STORM WILL LIKELY HIT THE ALBIN AREA BETWEEN 645 AN 655 PM MDT. THE STO4RM IS MOVING EAST-SOUTHEAST AT 25 MILES AN HOUR. THIS STORM HAS A HISTORY OF DAMAGING WIND. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! WCJIN-WYSE-WYNE JBS &
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 2, 2:05 PM MDT, 4 hours 31 minutes before
WYZ061-062-063-065-066-067-069-070-022100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 204 PM MDT FRI AUG 2 1996 ...THUNDERSTORMS DEVELOPING OVER SOUTHEAST WYOMING... AT 158 PM MDT...NATIONAL WEATHER SERVICE WEATHER RADAR INDICATED THUNDERSTORMS DEVELOPING 30 MILES WEST OF RAWLINS IN CARBON COUNTY AND ALSO IN EASTERN ALBANY COUNTY AND WESTERN LARAMIE COUNTY. THE STORMS WERE MOVING EAST AT 30 MPH. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING STRONG GUSTY WINDS AND FREQUENT DEADLY LIGHTNING. PEOPLE IN THE PATHS OF THESE STORMS SHOULD TAKE SHELTER INDOORS AND REMAIN AWAY FROM WINDOWS. WCJIN-WYSE ROBINSON
Special weather statement, Aug 2, 4:42 PM MDT, 1 hour 54 minutes before
WYZ065-066-069-022330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 441 PM MDT FRI AUG 2 1996 ...1/2 INCH HAIL REPORTED IN THE LARAMIE RANGE... AT 434 PM...A STORM SPOTTER NEAR THE AMES MONUMENT IN THE LARAMIE RANGE REPORTED 1/4 TO 1/2 INCH HAIL WITH A STORM THAT HAD JUST PASSED OVER THE AREA. DOPPLER RADAR IN CHEYENNE SHOWED THE STORM TO BE CENTERED ON INTERSTATE 80 BETWEEN MILE MARKERS 335 AND 348 WEST OF CHEYENNE AT 438 PM. THIS STORM WILL LIKELY CONTINUE TO PRODUCE 1/2 INCH HAIL AND WIND GUSTS TO AROUND 40 MILES AN HOUR AS IT MOVES EAST 35 MILES AN HOUR. IF YOU PLAN TO DRIVE ON I-80 WEST OF CHEYENNE...YOU SHOULD BE PREPARED FOR HAIL...STRONG WINDS ANDh HEAVY RAIN. IF NECESSARY...PULL OVER AND WAIT UNTIL AFTER THE STORM PASSES. THE STORM SHOULD APPROACH SOUTH CHEYENNE AROUND 5 PM. WCJIN-WYSE SULLIVAN
Special weather statement, Aug 2, 5:28 PM MDT, 1 hour 8 minutes before
WYZ065-066-069-022330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 527 PM MDT FRI AUG 2 1996 ...PEA TO MARBLE SIZED HAIL REPORTED REPORTED SOUTH OF CHEYENNE... AT 525 PM...DOPPLER RADAR IN CHEYENNE CONTINUED TO SHOW A STRONG THUNDERSTORM BETWEEN CHEYENNE AND THE COLORADO BORDER. PEA TO MARBLE SIZED HAIL WAS REPORTED NEAR THE HIGHWAY 85 PORT OF ENTRY AT 520 PM. THE STORM PRODUCING THIS HAIL WAS MOVING EAST-SOUTHEAST AT 30 MILES AN HOUR. IT WILL LIKELY CONTINUE TO PRODUCE SOME SMALL HAIL AND VERY HEAVY RAIN AS IT TRACKS EAST. WITH THE HEAVIER DOWNPOURS...SOME OTHERWISE DRY CREEKBEDS IN AND NEAR PORTER CREEK WILL LIKELY FILL RAPIDLY WITH WATER. NEVER ATTEMPT TO DRIVE ACROSS ANY WATER-COVERED ROADWAYS. MOST VEHICLES CAN BE WASHED AWAY BY LESS THAN 2 FEET OF RUNNING WATER. WCJIN-WYSE SULLIVAN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 6:43 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 32 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1996Every severe thunderstorm warning in 1996
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; radar from the NEXRAD Level II archive.