Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 36, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 19, 1998, 6:38 PM MDT for Dawes County, Nebraska. It was in force for 32 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 19, 1998, 6:38 PM MDT (00:38 UTC)
- Expired
- May 19, 1998, 7:10 PM MDT
- In force
- 32 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 00:46 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 274 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
- 1851 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1719 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
955 WUUS1 KCYS 200040 RRA SVRCYS NEC045-200110- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 638 PM MDT TUE MAY 19 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN DAWES COUNTY IN NORTHWESTERN NEBRASKA PANHANDLE * UNTIL 710 PM MDT * AT 635 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES SOUTH SOUTHWEST OF CHADRON... MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE... OVER OPEN COUNTRY GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. THIS STORM HAS A HISTORY OF PRODUCING GOLF BALL SIZE HAIL. 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
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, 6:56 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 19, 9:39 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.