Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 91, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jun 21, 2002, 12:19 AM MDT for Cherry County, Sheridan County, Nebraska. It was in force for 56 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 21, 2002, 12:19 AM MDT (06:19 UTC)
- Expired
- Jun 21, 2002, 1:15 AM MDT
- In force
- 56 min
- Issued by
- NWS North Platte, NE
- Area
- Counties, with a storm outline in the text
Counties Cherry County, NE, Sheridan County, NE
The radar
The North Platte radar (KLNX), 112 km from the middle of the area, began a volume at 06:19 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 |
|---|---|---|---|
| Jun 21, 12:20 AM MDT | Hail 1 | Hay Spgs, NE | |
| Jun 21, 1:00 AM MDT | Hail 1 | Hay Spgs, 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, 6.3 hours before the alert went out and 179 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
- 1486 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1641 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLBF 210619 SVRLBF NEC031-161-210715- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 1218 AM MDT FRI JUN 21 2002 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SHERIDAN COUNTY IN THE PANHANDLE OF NEBRASKA... CHERRY COUNTY IN NORTH CENTRAL NEBRASKA... * UNTIL 115 AM MDT(215 AM CDT)... * AT 1209 AM MDT(109 AM CDT)...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM 6 MILES SOUTH OF HAY SPRINGS TO 21 MILES NORTHEAST OF BROWNLEE...OR ALONG A LINE EXTENDING FROM 6 MILES SOUTH OF HAY SPRINGS TO 24 MILES WEST OF AINSWORTH...MOVING NORTH AT 35 MPH. * SEVERE THUNDERSTORMS WILL BE... OVER MERRITT RESERVOIR DAM AROUND 125 AM CDT... OVER CLINTON AROUND 1230 AM MDT... OVER GORDON AROUND 1235 AM MDT... OVER VALENTINE AROUND 150 AM CDT... OVER NENZEL AROUND 1255 AM MDT... OVER SPARKS AROUND 200 AM CDT... 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. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. LAT...LON 4221 10267 4227 10023 4294 10026 4294 10272 $$ CDC
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 9:23 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 52 min |
| Jun 20, 9:38 PM MDT | Severe Thunderstorm Warning | LBF | Keith, Perkins | 67 min |
| Jun 20, 10:59 PM MDT | Severe Thunderstorm Warning | LBF | Logan | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2002Every severe thunderstorm warning in 2002
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.