Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 42, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 20, 1997, 3:18 PM MDT for Dawes County, Nebraska. It was in force for 47 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
- Jun 20, 1997, 3:18 PM MDT (21:18 UTC)
- Expired
- Jun 20, 1997, 4:05 PM MDT
- In force
- 47 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Dawes County, NE
The radar
The Rapid City radar (KUDX), 158 km from the middle of the area, began a volume at 21:20 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 20, 2:30 PM MDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 9.3 hours before the alert went out and 152 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
- 1334 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 202119 RRA SVRCYS NEC045-202205- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 318 PM MDT FRI JUN 20 1997 * SEVERE THUNDERSTORM WARNING FOR SOUTHERN DAWES COUNTY IN NORTHWESTERN NEBRASKA PANHANDLE * UNTIL 405 PM MDT * SOME LOCATION AFFECTED MARSHLAND NOW * AT 315 PM RADAR INDICATED A SEVERE THUNDERSTORM OVER SOUTHEAST DAWES COUNTY MOVING TO THE EAST AT 35 MPH. THE THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL...STRONG DAMAGING WINDS AND HEAVY RAIN. A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. LARGE HAIL IS LIKELY WITH THIS STORM. SEEK SHELTER INSIDE A STURDY BUILDING AWAY FROM( ALL WINDOWS UNTIL THE STORM PASSES. LRE
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 20, 10:05 AM MDT, 5 hours 13 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-210000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1005 AM MDT FRI JUN 20 1997 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS MEDIUM TODAY...ESPECIALLY IN THE NEBRASKA PANHANDLE. SPOTTER ACTIVATION MAY BE REQUESTED...MAINLY IN THE PANHANDLE. DISCUSSION...A STATIONARY FRONT EXISTS ALONG THE SOUTHERN WYOMING BORDER THIS MORNING WHICH WILL BOW NORTH DURING THE AFTERNOON ACTING TO FOCUS THUNDERSTORM DEVELOPMENT OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE. DEW POINTS OVER THE NEBRASKA PANHANDLE AND THE SOUTHEAST WY PLAINS ARE IN THE MID 50S TO LOW 60S WHICH IS QUITE MOIST. SOME WIND SHEAR WILL ALSO BE AVAILABLE FOR THE FORMATION OF SOME SUPER CELLS OVER THE AREA THIS AFTERNOON. THEREFORE LARGE HAIL...DAMAGING WINDS...AND HEAVY RAIN WILL BE POSSIBLE WITH SOME STORMS LATER TODAY. THE BEST CHANCE FOR SEVERE STORMS WILL BE IN THE NEBRASKA PANHANDLE. WCJIN-WYSE-WYNE PAL
Special weather statement, Jun 20, 10:06 AM MDT, 5 hours 12 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-210000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1005 AM MDT FRI JUN 20 1997 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS MEDIUM TODAY...ESPECIALLY IN THE NEBRASKA PANHANDLE. SPOTTER ACTIVATION MAY BE REQUESTED...MAINLY IN THE PANHANDLE. DISCUSSION...A STATIONARY FRONT EXISTS ALONG THE SOUTHERN WYOMING BORDER THIS MORNING WHICH WILL BOW NORTH DURING THE AFTERNOON ACTING TO FOCUS THUNDERSTORM DEVELOPMENT OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE. DEW POINTS OVER THE NEBRASKA PANHANDLE AND THE SOUTHEAST WY PLAINS ARE IN THE MID 50S TO LOW 60S WHICH IS QUITE MOIST. SOME WIND SHEAR WILL ALSO BE AVAILABLE FOR THE FORMATION OF SOME SUPER CELLS OVER THE AREA THIS AFTERNOON. THEREFORE LARGE HAIL...DAMAGING WINDS...AND HEAVY RAIN WILL BE POSSIBLE WITH SOME STORMS LATER TODAY. THE BEST CHANCE FOR SEVERE STORMS WILL BE IN THE NEBRASKA PANHANDLE. p WCJIN-WYSE-WYNE PAL
Special weather statement, Jun 20, 2:29 PM MDT, 49 minutes before
WYZ060-068-NEZ001>003-019>021-054-055-210300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 230 PM MDT FRI JUN 20 1997 A TORNADO WATCH HAS BEEN ISSUED FOR THE NEBRASKA PANHANDLE AND PARTS OF SOUTHEAST WYOMING AND IS VALID UNTIL 9 PM. COUNTIES IN THE PANHANDLE INCLUDE SIOUX...DAWES...BOX BUTTE...MORRILL ...CHEYENNE...SCOTTS BLUFF...BANNER AND KIMBALL. SOME CITIES INCLUDED IN THE WATCH ARE HARRISON...CHADRON...ALLIANCE...BRIDGEPORT...SIDNEY ...KIMBALL...HARRISBURG...AND SCOTTSBLUFF/GERING. COUNTIES IN WYOMING INCLUDED IN THE WATCH ARE GOSHEN...AND SOUTHERN NIOBRARA. SOME CITIES AND TOWNS IN THE WATCH ARE LUSK...AND TORRINGTON. A MOIST AND UNSTABLE AIRMASS IS IN PLACE OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE. AN UPPER LEVEL DISTURBANCE MOVING THROUGH THE AREA WILL RESULT IN SOME STRONG THUNDERSTORMS. SOME OF THESE STORMS COULD COULD PRODUCE LARGE HAIL AND TORNADOES ALONG WITH HEAVY RAIN. PEOPLE IN THE WATCH AREA SHOULD BE ALERT TO APPROACHING STORMS AND BE PREPARED TO SEEK SHELTER. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL TELEVISION AND RADIO STATIONS AS WELL AS YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS AND WARNING. WCJIN-WYNE-WYSE LRE
Special weather statement, Jun 20, 2:30 PM MDT, 48 minutes before
WYZ060-068-NEZ001>003-019>021-054-055-210300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 230 PM MDT FRI JUN 20 1997 A TORNADO WATCH HAS BEEN ISSUED FOR THE NEBRASKA PANHANDLE AND PARTS OF SOUTHEAST WYOMING AND IS VALID UNTIL 9 PM. COUNTIES IN THE PANHANDLE INCLUDE SIOUX...DAWES...BOX BUTTE...MORRILL ...CHEYENNE...SCOTTS BLUFF...BANNER AND KIMBALL. SOME CITIES INCLUDED IN THE WATCH ARE HARRISON...CHADRON...ALLIANCE...BRIDGEPORT...SIDNEY ...KIMBALL...HARRISBURG...AND SCOTTSBLUFF/GERING. COUNTIES IN WYOMING INCLUDED IN THE WATCH ARE GOSHEN...AND SOUTHERN NIOBRARA. SOME CITIES AND TOWNS IN THE WATCH ARE LUSK...AND TORRINGTON. A MOIST AND UNSTABLE AIRMASS IS IN PLACE OVER SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE. AN UPPER LEVEL DISTURBANCE MOVING THROUGH THE AREA WILL RESULT IN SOME STRONG THUNDERSTORMS. SOME OF THESE STORMS COULD COULD PRODUCE LARGE HAIL AND TORNADOES ALONG WITH HEAVY RAIN. PEOPLE IN THE WATCH AREA SHOULD BE ALERT TO APPROACHING STORMS AND BE PREPARED TO SEEK SHELTER. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL TELEVISION AND RADIO STATIONS AS WELL AS YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS AND WARNING. WCJIN-WYNE-WYSE LRE
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 2:32 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 48 min |
| Jun 20, 2:47 PM MDT | Tornado Warning | CYS | Banner | 48 min |
| Jun 20, 3:27 PM MDT | Tornado Warning | CYS | Kimball | 33 min |
| Jun 20, 3:33 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 32 min |
| Jun 20, 3:39 PM MDT | Tornado Warning | CYS | Box Butte | 31 min |
| Jun 20, 4:02 PM MDT | Tornado Warning | CYS | Cheyenne, Kimball | 48 min |
| Jun 20, 4:08 PM MDT | Tornado Warning | CYS | Box Butte | 17 min |
| Jun 20, 4:13 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 47 min |
| Jun 20, 4:42 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 33 min |
| Jun 20, 4:45 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 45 min |
| Jun 20, 5:20 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 45 min |
| Jun 20, 5:27 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 43 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 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.