Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 13, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Apr 20, 2001, 6:43 PM MDT for Chase County, Perkins County, Nebraska. It was in force for 62 min. 3 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 20, 2001, 6:43 PM MDT (00:43 UTC)
- Expired
- Apr 20, 2001, 7:45 PM MDT
- In force
- 62 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Chase County, NE, Perkins County, NE
The radar
The Goodland radar (KGLD), 149 km from the middle of the area, began a volume at 00:43 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 |
|---|---|---|---|
| Apr 20, 6:50 PM MDT | Thunderstorm Wind 52 M | Imperial, NE | Wind blew power lines down in Imperial. |
| Apr 20, 7:00 PM MDT | Thunderstorm Wind 70 E | Imperial, NE | Thunderstorm wind blew down power lines and damaged trees. |
| Apr 20, 7:20 PM MDT | Hail 0.75 | Grant, 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.7 hours before the alert went out and 105 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
- 1439 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLBF 210045 SVRLBF NEC029-135-210145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 643 PM MDT FRI APR 20 2001 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PERKINS COUNTY IN SOUTHWEST NEBRASKA CHASE COUNTY IN SOUTHWEST NEBRASKA * UNTIL 745 PM MDT * AT 641 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES WEST OF BRANDON TO 5 MILES SOUTHWEST OF ENDERS...OR ALONG A LINE EXTENDING FROM 14 MILES WEST OF GRANT TO 7 MILES SOUTH OF IMPERIAL...MOVING EAST AT 35 MPH. * SEVERE THUNDERSTORMS WILL BE... OVER ENDERS AROUND 650 PM MDT OVER GRANT AROUND 710 PM MDT OVER MADRID AROUND 730 PM MDT OVER ELSIE AROUND 745 PM MDT IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER IN A SMALL INTERIOR ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION. THE PRIMARY THREAT POSED BY THIS STORM IS DAMAGING WINDS. QUICKLY SEEK SAFETY IN A BUILDING AND STAY AWAY FROM WINDOWS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. LAT...LON 4094 10200 4038 10190 4036 10139 4092 10133 $$ JWS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 6:04 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 56 min |
| Apr 20, 6:18 PM MDT | Severe Thunderstorm Warning | LBF | Wheeler | 57 min |
| Apr 20, 6:28 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 47 min |
| Apr 20, 6:53 PM MDT | Severe Thunderstorm Warning | LBF | Hayes | 67 min |
| Apr 20, 7:25 PM MDT | Severe Thunderstorm Warning | LBF | Frontier, Lincoln | 65 min |
| Apr 20, 7:53 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 67 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001
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.