Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 173, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 2, 2012, 7:30 PM MDT for Chase County, Perkins County, Nebraska. It was in force for 45 min. 1 report 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
- Aug 2, 2012, 7:30 PM MDT (01:30 UTC)
- Expired
- Aug 2, 2012, 8:15 PM MDT
- In force
- 45 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 70.0 mph
Counties Chase County, NE, Perkins County, NE
The radar
The Goodland radar (KGLD), 138 km from the middle of the area, began a volume at 01:25 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 |
|---|---|---|---|
| Aug 2, 7:45 PM MDT | HAIL 1 | 12 E Venango, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.5 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
- 1601 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 2010 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
401 WUUS53 KLBF 030130 SVRLBF NEC029-135-030230- /O.NEW.KLBF.SV.W.0173.120803T0130Z-120803T0230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 730 PM MDT THU AUG 2 2012 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHASE COUNTY IN SOUTHWEST NEBRASKA... SOUTHWESTERN PERKINS COUNTY IN SOUTHWEST NEBRASKA... * UNTIL 830 PM MDT * AT 727 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED 7 MILES SOUTHEAST OF BRANDON...OR 12 MILES SOUTHWEST OF GRANT...AND MOVING SOUTHEAST AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... IMPERIAL...CHAMPION AND HIGHWAY 61 MILE MARKER 50. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...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 DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4057 10137 4041 10174 4071 10204 4079 10168 TIME...MOT...LOC 0130Z 320DEG 18KT 4069 10186 WIND...HAIL 70MPH 1.75IN $$ SPRINGER
2 follow-up statements
586 WWUS53 KLBF 030157 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 857 PM CDT THU AUG 2 2012 NEC135-030206- /O.CAN.KLBF.SV.W.0173.000000T0000Z-120803T0230Z/ PERKINS NE- 757 PM MDT THU AUG 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PERKINS COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF PERKINS COUNTY. OTHER STORMS IN NORTHEAST PERKINS COUNTY COULD STRENGTHEN. LAT...LON 4069 10202 4070 10155 4057 10137 4041 10174 TIME...MOT...LOC 0156Z 315DEG 16KT 4065 10180 $$ NEC029-030230- /O.CON.KLBF.SV.W.0173.000000T0000Z-120803T0230Z/ CHASE NE- 757 PM MDT THU AUG 2 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CHASE COUNTY UNTIL 830 PM MDT... AT 755 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED 11 MILES NORTHEAST OF LAMAR...OR 13 MILES NORTHWEST OF IMPERIAL...MOVING SOUTHEAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... IMPERIAL...CHAMPION AND HIGHWAY 61 MILE MARKER 50. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...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 DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4069 10202 4070 10155 4057 10137 4041 10174 TIME...MOT...LOC 0156Z 315DEG 16KT 4065 10180 WIND...HAIL 70MPH 1.75IN $$ SPRINGER
930 WWUS53 KLBF 030215 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 915 PM CDT THU AUG 2 2012 NEC029-030225- /O.CAN.KLBF.SV.W.0173.000000T0000Z-120803T0230Z/ CHASE NE- 815 PM MDT THU AUG 2 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CHASE COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN NORTH PLATTE. LAT...LON 4069 10202 4070 10155 4057 10137 4041 10174 TIME...MOT...LOC 0215Z 315DEG 16KT 4059 10172 $$ JACOBS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 6:00 PM MDT | Tornado Warning | LBF | Deuel | 30 min |
| Aug 2, 6:27 PM MDT | Severe Thunderstorm Warning | LBF | Deuel, Keith, Perkins | 30 min |
| Aug 2, 6:40 PM MDT | Tornado Warning | LBF | Deuel, Perkins | 25 min |
| Aug 2, 6:55 PM MDT | Severe Thunderstorm Warning | LBF | Perkins | 49 min |
| Aug 2, 7:04 PM MDT | Tornado Warning | LBF | Perkins | 26 min |
| Aug 3, 12:19 AM MDT | Severe Thunderstorm Warning | LBF | Boyd, Brown, Holt, Keya Paha, Rock | 56 min |
| Aug 3, 4:53 PM MDT | Severe Thunderstorm Warning | LBF | Boyd, Keya Paha | 67 min |
| Aug 3, 5:40 PM MDT | Severe Thunderstorm Warning | LBF | Brown, Rock | 65 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.