Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 40, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 19, 1998, 9:39 PM MDT for Cheyenne County, Nebraska. It was in force for 31 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
- May 19, 1998, 9:39 PM MDT (03:39 UTC)
- Expired
- May 19, 1998, 10:10 PM MDT
- In force
- 31 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Cheyenne County, NE
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 19, 10:04 PM MDT | Hail 1.75 | Dalton, NE |
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.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 3.7 hours before the alert went out and 151 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
- 22 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 3900 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
901 WUUS1 KCYS 200341 RRA SVRCYS NEC033-200410- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 939 PM MDT TUE MAY 19 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CHEYENNE COUNTY IN WESTERN NEBRASKA PANHANDLE * UNTIL 1010 PM MDT * AT 938 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES NORTH NORTHWEST OF SIDNEY... MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... DALTON AT 945 PM MDT SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL... DEADLY LIGHTNING... AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DONT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. PAL
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 19, 8:02 PM MDT, 1 hour 37 minutes before
NEZ001-019-020-054-WYZ060-068-070-200215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 802 PM MDT TUE MAY 19 1998 THE TORNADO WATCH HAS BEEN CANCELED FOR NIOBRARA...GOSHEN AND EASTERN LARAMIE COUNTIES IN EASTERN WYOMING AND FOR SIOUX...SCOTTS BLUFFS...BANNER AND KIMBALL COUNTIES IN THE NEBRASKA PANHANDLE. THE TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM MDT FOR DAWES... BOX BUTTE...MORRILL...AND CHEYENNE COUNTIES IN THE NEBRASKA PANHANDLE. WCJIN-WYNE-WYSE PAL
Special weather statement, May 19, 8:02 PM MDT, 1 hour 37 minutes before
NEZ001-019-020-054-WYZ060-068-070-200215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 802 PM MDT TUE MAY 19 1998 THE TORNADO WATCH HAS BEEN CANCELED FOR NIOBRARA...GOSHEN AND EASTERN LARAMIE COUNTIES IN EASTERN WYOMING AND FOR SIOUX...SCOTTS BLUFFS...BANNER AND KIMBALL COUNTIES IN THE NEBRASKA PANHANDLE. THE TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM MDT FOR DAWES... BOX BUTTE...MORRILL...AND CHEYENNE COUNTIES IN THE NEBRASKA PANHANDLE. WCJIN-WYNE-WYSE PAL
Special weather statement, May 19, 9:15 PM MDT, 24 minutes before
NEZ002-003-021-055-200335- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 915 PM MDT TUE MAY 19 1998 THE TORNADO WATCH FOR DAWES...BOX BUTTE...MORRILL AND CHEYENNE COUNTIES OF THE NEBRASKA PANHANDLE EXPIRED AT 9 PM. PAL
Special weather statement, May 19, 9:15 PM MDT, 24 minutes before
NEZ002-003-021-055-200335- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 915 PM MDT TUE MAY 19 1998 THE TORNADO WATCH FOR DAWES...BOX BUTTE...MORRILL AND CHEYENNE COUNTIES OF THE NEBRASKA PANHANDLE EXPIRED AT 9 PM. PAL
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 6:09 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 46 min |
| May 19, 6:27 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 33 min |
| May 19, 6:38 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 32 min |
| May 19, 6:56 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 29 min |
| May 19, 7:26 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 44 min |
| May 19, 9:19 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 31 min |
| May 20, 4:13 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 32 min |
| May 20, 4:46 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 34 min |
| May 20, 5:28 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 32 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning in 1998
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.