Alert archive / Wyoming / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 89, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 2, 1997, 3:19 PM MDT for Albany County, Wyoming. It was in force for 46 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, 1997, 3:19 PM MDT (21:19 UTC)
- Expired
- Aug 2, 1997, 4:05 PM MDT
- In force
- 46 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Albany County, WY
The radar
The Cheyenne radar (KCYS), 95 km from the middle of the area, began a volume at 21:22 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
Riverton, WY (KRIW), launched 12:00Z, 9.3 hours before the alert went out and 270 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
- 60 J/kg
- Mixed-layer CIN
- -341 J/kg
- Mixed-layer LCL
- 1901 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 76 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 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, 9:56 AM MDT, 5 hours 23 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-030000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 956 AM MDT SAT AUG 2 1997 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS LOW TODAY. SPOTTER ACTIVATION WILL NOT BE NECESSARY. DISCUSSION...THE AIRMASS WILL BE FAIRLY MOIST DURING THE AFTERNOON. A SCATTERED COVERAGE OF THUNDERSTORMS WILL DEVELOP BY 200 PM OVER THE FAR SOUTH CENTRAL AND SOUTHEAST PARTS OF WYOMING AND AFTER 300 PM IN THE SOUTHERN NEBRASKA PANHANDLE. THE REST OF THE AREA WILL SEE LESS THUNDERSTORMS. SOME OF THE THUNDERSTORMS IN THE FAR SOUTH PART OF THE AREA WILL PRODUCE HEAVY RAINFALL AS THEY MOVE SLOWLY TO THE NORTHEAST. WCJIN-WYSE-WYNE WEILAND
Special weather statement, Aug 2, 9:57 AM MDT, 5 hours 22 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-030000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 956 AM MDT FRI AUG 1 1997 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS LOW TODAY. SPOTTER ACTIVATION WILL NOT BE NECESSARY. DISCUSSION...THE AIRMASS WILL BE FAIRLY MOIST DURING THE AFTERNOON. A SCATTERED COVERAGE OF THUNDERSTORMS WILL DEVELOP BY 200 PM OVER THE FAR SOUTH CENTRAL AND SOUTHEAST PARTS OF WYOMING AND AFTER 300 PM IN THE SOUTHERN NEBRASKA PANHANDLE. THE REST OF THE AREA WILL SEE LESS THUNDERSTORMS. SOME OF THE THUNDERSTORMS IN THE FAR SOUTH PART OF THE AREA WILL PRODUCE HEAVY RAINFALL AS THEY MOVE SLOWLY TO THE NORTHEAST. WCJIN-WYSE-WYNhE WEILAND
Special weather statement, Aug 2, 10:02 AM MDT, 5 hours 17 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-040000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1002 AM MDT SAT AUG 2 1997 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS LOW TODAY. SPOTTER ACTIVATION WILL NOT BE NECESSARY. DISCUSSION...EVEN THOUGH THE AIR MASS IS GENERALLY DRIER THAN SATURDAY WIDELY SCATTERED THUNDERSTORMS WILL DEVELOP AFTER 200 PM OVER THE AREA. THE COVERAGE OF STORMS WILL BE LESS THAN ON SATURDAY...BUT A FEW OF THEM COULD BECOME STRONG WITH HEAVY RAIN AND HAIL DUE TO A LOW LEVEL UPSLOPE WIND FLOW. ANY STORMS WILL MOVE SLWOLY SOUTHEAST THIS AFTERNOON. WCJIN-WYSE-WYNE WEILAND
Special weather statement, Aug 2, 10:03 AM MDT, 5 hours 16 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-030000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 956 AM MDT SAT AUG 2 1997 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS LOW TODAY. SPOTTER ACTIVATION WILL NOT BE NECESSARY. DISCUSSION...THE AIRMASS WILL BE FAIRLY MOIST DURING THE AFTERNOON. A SCATTERED COVERAGE OF THUNDERSTORMS WILL DEVELOP BY 200 PM OVER THE FAR SOUTH CENTRAL AND SOUTHEAST PARTS OF WYOMING AND AFTER 300 PM IN THE SOUTHERN NEBRASKA PANHANDLE. THE REST OF THE AREA WILL SEE LESS THUNDERSTORMS. SOME OF THE THUNDERSTORMS IN THE FAR SOUTH PART OF THE AREA WILL PRODUCE HEAVY RAINFALL AS THEY MOVE SLOWLY TO THE NORTHEAST. WCJIN-WYSE-WYNE WEILAND
Special weather statement, Aug 2, 2:40 PM MDT, 39 minutes before
WYZ059-060-067-068-022145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 240 PM MDT SAT AUG 2 1997 ...HEAVY RAINS OVER PARTS OF EAST CENTRAL AND SOUTHEAST WYOMING... AT 237 PM MDT...THUNDERSTORMS WITH HEAVY RAINFALL HAD DEVELOPED OVER CONVERESE AND NORTHERN PLATTE COUNTIES. THESE STORMS WERE GENERALLY LOCATED FROM 15 MILES NORTH OF WHEATLAND TO NEAR DOUGLAS AND GLENROCK. THE STORMS WERE MOVING EAST AT 15 TO 20 MPH AND WILL IMPACT THE TOWNS OF DOUGLAS AND DEER CREEK THROUGH 3:30 PM. THESE STORMS WILL THEN MOVE INTO THE VICINITY OF KEELINE AND LUSK AND INTO NORTHERN SECTIONS OF GOSHEN COUNTY TOWARD 3:00 PM OR 3:30 PM. PEOPLE IN THESE AREAS SHOULD BE PREPARED FOR BRIEF HEAVY RAINFALL...POSSIBLE UP TO A HALF AN INCH IN LESS THAN 30 MINUTES...AND WIND GUSTS TO 35 MPH. THERE MAY ALSO BE SOME VERY SMALL HAIL WITH THE STRONGEST STORMS. WCJIN-WYSE DMM
Special weather statement, Aug 2, 2:41 PM MDT, 38 minutes before
WYZ059-060-067-068-022145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 240 PM MDT SAT AUG 2 1997 ...HEAVY RAINS OVER PARTS OF EAST CENTRAL AND SOUTHEAST WYOMING... AT 237 PM MDT...THUNDERSTORMS WITH HEAVY RAINFALL HAD DEVELOPED OVER CONVERESE AND NORTHERN PLATTE COUNTIES. THESE STORMS WERE GENERALLY LOCATED FROM 15 MILES NORTH OF WHEATLAND TO NEAR DOUGLAS AND GLENROCK. THE STORMS WERE MOVING EAST AT 15 TO 20 MPH AND WILL IMPACT THE TOWNS OF DOUGLAS AND DEER CREEK THROUGH 3:30 PM. THESE STORMS WILL THEN MOVE INTO THE VICINITY OF KEELINE AND LUSK AND INTO NORTHERN SECTIONS OF GOSHEN COUNTY TOWARD 3:00 PM OR 3:30 PM. PEOPLE IN THESE AREAS SHOULD BE PREPARED FOR BRIEF HEAVY RAINFALL...POSSIBLE UP TO A HALF AN INCH IN LESS THAN 30 MINUTES...AND WIND GUSTS TO 35 MPH. THERE MAY ALSO BE SOME VERY SMALL HAIL WITH THE STRONGEST STORMS. WCJIN-WYSE DMM
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 3:36 PM MDT | Tornado Warning | CYS | Laramie | 49 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1997Every severe thunderstorm warning in 1997
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.