Alert archive / Nebraska / Tornado Warnings in 1998
Tornado Warning 21, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jul 2, 1998, 9:33 PM MDT for Morrill County, Nebraska. It was in force for 27 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
- Jul 2, 1998, 9:33 PM MDT (03:33 UTC)
- Expired
- Jul 2, 1998, 10:00 PM MDT
- In force
- 27 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Morrill County, NE
The radar
The Cheyenne radar (KCYS), 162 km from the middle of the area, began a volume at 03:37 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 2, 9:39 PM MDT | Thunderstorm Wind 52 | Broadwater, NE | A storm produced wind gusts up to 60 mph 8 miles southeast of Broadwater. |
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, 3.6 hours before the alert went out and 206 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
- 881 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 2918 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
572 WFUS1 KCYS 030344 RRA TORCYS NEC123-030400- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 933 PM MDT THU JUL 2 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN MORRILL COUNTY IN THE NEBRASKA PANHANDLE * UNTIL 1000 PM MDT * AT 930 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A POSSIBLE TORNADO 5 MILES SOUTH OF BROADWATER... MOVING EAST AT 30 MPH. * THE POSSIBLE TORNADO IS EXPECTED TO BE NEAR... 5 SOUTHEAST OF BROADWATER BY 940 PM IF YOU ARE IN A MULTIPLE STORY BUILDING...GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS. DMM
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 7:32 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 53 min |
| Jul 2, 8:17 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 43 min |
| Jul 2, 8:24 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 46 min |
| Jul 2, 8:32 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 48 min |
| Jul 2, 9:00 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 45 min |
| Jul 2, 9:21 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 49 min |
| Jul 2, 9:43 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 47 min |
| Jul 2, 10:31 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 44 min |
| Jul 2, 11:12 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | |
| Jul 2, 11:44 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 51 min |
Nearby
Tornado Warnings in Nebraska, 1998Every tornado warning in 1998Tornadoes 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; radar from the NEXRAD Level II archive.