Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 4, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Apr 18, 2000, 8:35 PM MDT for Cheyenne County, Morrill County, Nebraska. It was in force for 40 min. 4 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Apr 18, 2000, 8:35 PM MDT (02:35 UTC)
- Expired
- Apr 18, 2000, 9:15 PM MDT
- In force
- 40 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Cheyenne County, NE, Morrill County, NE
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 18, 8:50 PM MDT | Hail 1.75 | Dalton, NE | |
| Apr 18, 9:00 PM MDT | Thunderstorm Wind 60 E | Broadwater, NE | High winds blew a garage door out in Broadwater, NE. |
| Apr 18, 9:10 PM MDT | Thunderstorm Wind 60 E | Bridgeport, NE | High winds damaged roofs and irrigation equipment in and near Bridgeport, NE. |
| Apr 18, 9:20 PM MDT | Thunderstorm Wind 60 E | Bridgeport, 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, 2.6 hours before the alert went out and 193 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
- 12 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 4616 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
018 WUUS55 KCYS 190235 SVRCYS NEC033-123-190315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 835 PM MDT TUE APR 18 2000 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA CENTRAL AND SOUTHERN MORRILL COUNTY IN THE PANHANDLE OF NEBRASKA * UNTIL 915 PM MDT * AT 835 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES NORTHWEST OF SIDNEY...MOVING NORTHEAST AT 35 MPH. THIS SEVERE THUNDERSTORM WILL PRODUCE DIME SIZE HAIL AND WINDS IN EXCESS OF 60 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE DALTON BY 840 PM BRIDGEPORT BY 9 PM IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. LAT...LON 4157 10337 4127 10312 4161 10265 4197 10281 JAD
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 7:13 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 32 min |
| Apr 18, 9:15 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 45 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2000Every severe thunderstorm warning in 2000
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.