Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 9, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 22, 1996, 2:18 PM MDT for Laramie County, Wyoming. It was in force for 42 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
- May 22, 1996, 2:18 PM MDT (20:18 UTC)
- Expired
- May 22, 1996, 3:00 PM MDT
- In force
- 42 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 20:20 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
Denver, CO (KDNR), launched 12:00Z, 8.3 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
- 1706 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 73 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 222028 COR SVRCYS WYC021-222100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTION NATIONAL WEATHER SERVICE CHEYENNE WY 218 PM MDT WED MAY 22 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...EASTERN LARAMIE COUNTY AT 215 PM MDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM IN CENTRAL LARAMIE COUNTY 15 MILES NORTHEAST OF CHEYENNE. THE STORM WAS MOVING EAST AT 20 MPH AND WILL PASS NEAR BURNS BY 230 PM AND NEAR ALBIN AROUND 245 PM. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! CPORRECTED LOCATION OF STORM IN FIRST SENTENCE HARRISON
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, May 22, 10:08 AM MDT, 4 hours 10 minutes before
WYZ059>070-NEZ001>03-019>021-054-055-192300-
SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
1007 AM MDT TUE MAY 21 1996
THE SEVERE WEATHER POTENTIAL IN THE COUNTY WARNING AREA OF THE CHEYENNE
NATIONAL WEATHER SERVICE OFFICE IS MODERATE THIS AFTERNOON AND EVENING.
SPOTTER ACTIVATION MAY BE NECESSARY.
DISCUSSION...A DEVELOPING SPRING STORM SYSTEM OVER THE WEST WAS
GIVING A SOUTHWEST FLOW ALOFT OVER THE AREA WITH INCREASING
MOISTURE. AT THE SURFACE...A LOW PRESSURE SYSTEM WILL DEVELOP INTO
EAST CENTRAL COLORADO AND NORTHWEST KANSAS IN THE AFTERNOON PROVIDING
A SOUTHTEAST FLOW INTO THE NEBRASKA PANHANDLE AND SOUTHEAST WYOMING.
THE AIRMASS WILL BECOME UNSTABLE WITH A SLIGHT RISK FOR SEVERE
THUNDERSTORMS EXPECTED LATER THIS AFTERNOON AND THIS EVENING.
THIS OUTLOOK IS FOR THE FOLLOWING COUNTIES IN SOUTHEAST WYOMING AND
THE NEBRASKA PANHANDLE:
>
WY...ALBANY...CONVERSE...GOSHEN...LARAMIE...NIOBRARA...PLATTE.
NE..@.BANNER BOX BUTTE CHEYENNE DAWES KIMBALL MORRILL SIOUX
SCOTTS BLUFF
WCJIN-WYSE-WYNE
PALSpecial weather statement, May 22, 1:23 PM MDT, 55 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-222030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 122 PM MDT TUE MAY 22 1996 AT 120 PM...DOPPLER RADAR IN CHEYENNE INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS DEVELOPING OVER SOUTHEAST WYOMING INTO THE NEBRASKA PANHANDLE. THE STRONGEST STORM WAS LOCATED 4 MILES NORTHWEST OF CHUGWATER IN SOUTHEAST PLATTE COUNTY WYOMING. THE STORM WAS MOVING NORTHEAST AT 20 MILES AN HOUR. SMALL HAIL...BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING CAN BE EXPECTED FROM THIS STORM. PAL
Special weather statement, May 22, 1:48 PM MDT, 30 minutes before
WYZ059>070-NEZ001>03-019>021-054-055-222300-
SEVERE WEATHER OUTLOOK...CORRECTED THE DATE AND EXPIRATION TIME
NATIONAL WEATHER SERVICE CHEYENNE WY
147 PM MDT WED MAY 22 1996
THE SEVERE WEATHER POTENTIAL IN THE COUNTY WARNING AREA OF THE CHEYENNE
NATIONAL WEATHER SERVICE OFFICE IS MODERATE THIS AFTERNOON AND EVENING.
SPOTTER ACTIVATION MAY BE NECESSARY.
DISCUSSION...A DEVELOPING SPRING STORM SYSTEM OVER THE WEST WAS
GIVING A SOUTHWEST FLOW ALOFT OVER THE AREA WITH INCREASING
MOISTURE. AT THE SURFACE...A LOW PRESSURE SYSTEM WILL DEVELOP INTO
EAST CENTRAL COLORADO AND NORTHWEST KANSAS IN THE AFTERNOON PROVIDING
A SOUTHTEAST FLOW INTO THE NEBRASKA PANHANDLE AND SOUTHEAST WYOMING.
THE AIRMASS WILL BECOME UNSTABLE WITH A SLIGHT RISK FOR SEVERE
THUNDERSTORMS EXPECTED LATER THIS AFTERNOON AND THIS EVENING.
THIS OUTLOOK IS FOR THE FOLLOWING COUNTIES IN SOUTHEAST WYOMING AND
THE NEBRASKA PANHANDLE:
>
WY...ALBANY...CONVERSE...G@OSHEN...LARAMIE...NIOBRARA...PLATTE.
NE...BANNER BOX BUTTE CHEYENNE DAWES KIMBALL MORRILL SIOUX
SCOTTS BLUFF
WCJIN-WYSE-WYNE
PALSpecial weather statement, May 22, 2:05 PM MDT, 13 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-222115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 200 PM MDT WED MAY 22 1996 SHOWERS AND THUNDERSTORMS WERE BECOMING FAIRLY WIDESPREAD OVER SOUTHEAST WYOMING AND PARTS OF THE NEBRASKA PANHANDLE. AT 155 PM ONE STRONG STORM WAS DEVELOPING 5 MILES NORTHEAST OF CHEYENNE. THE SOUTHERN EDGE OF THIS STORM PRODUCED PEA SIZE HAIL OVER NORTHEAST CHEYENNE. THE STORM WAS MOVING EAST AT 20 MPH. THIS STORM COULD PRODUCE PEA TO MARBLE SIZE HAIL AS IT MOVES THROUGH EASTERN LARAMIE COUNTY. OTHER THUNDERSTORM ACTIVITY ACROSS SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE WAS WEAK AT 155 PM. STORMS ARE EXPECTED TO CONTINUE TO DEVELOP THIS AFTERNOON AND SOME COULD BECOME RATHER STRONG. JMH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 3:00 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 30 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.