Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 313, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 21, 2011, 3:20 AM MDT for Cherry County, Nebraska. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 21, 2011, 3:20 AM MDT (09:20 UTC)
- Expired
- Aug 21, 2011, 4:15 AM MDT
- In force
- 55 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Cherry County, NE
The radar
The North Platte radar (KLNX), 106 km from the middle of the area, began a volume at 09:21 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.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 9.3 hours before the alert went out and 197 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
- 1301 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 991 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 353 m²/s²
- Significant tornado parameter
- 2.0
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
634 WUUS53 KLBF 210920 SVRLBF NEC031-211015- /O.NEW.KLBF.SV.W.0313.110821T0920Z-110821T1015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 420 AM CDT SUN AUG 21 2011 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL CHERRY COUNTY IN NORTH CENTRAL NEBRASKA... * UNTIL 515 AM CDT/415 AM MDT/ * AT 416 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 8 MILES NORTH OF NENZEL...OR 29 MILES NORTHWEST OF VALENTINE...AND MOVING SOUTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... KILGORE AROUND 345 AM MDT. CROOKSTON AROUND 510 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4291 10046 4269 10067 4300 10120 4301 10071 TIME...MOT...LOC 0919Z 304DEG 18KT 4304 10106 WIND...HAIL <50MPH 1.00IN $$ POWER
3 follow-up statements
210 WWUS53 KLBF 210942 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 442 AM CDT SUN AUG 21 2011 NEC031-211015- /O.CON.KLBF.SV.W.0313.000000T0000Z-110821T1015Z/ CHERRY NE- 442 AM CDT SUN AUG 21 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL CHERRY COUNTY UNTIL 515 AM CDT/415 AM MDT/... AT 341 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR KILGORE...OR 19 MILES WEST OF VALENTINE... MOVING SOUTHEAST AT 20 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... CROOKSTON AROUND 505 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4291 10046 4269 10067 4300 10120 4301 10071 TIME...MOT...LOC 0942Z 296DEG 19KT 4298 10090 WIND...HAIL <50MPH 1.00IN $$ POWER
075 WWUS53 KLBF 210958 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 458 AM CDT SUN AUG 21 2011 NEC031-211015- /O.CON.KLBF.SV.W.0313.000000T0000Z-110821T1015Z/ CHERRY NE- 458 AM CDT SUN AUG 21 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL CHERRY COUNTY UNTIL 515 AM CDT/415 AM MDT/... AT 455 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR CROOKSTON...OR 14 MILES NORTHWEST OF VALENTINE...MOVING SOUTHEAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... CROOKSTON AROUND 505 AM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4291 10046 4269 10067 4300 10120 4301 10071 TIME...MOT...LOC 0957Z 293DEG 20KT 4295 10079 WIND...HAIL <50MPH 1.00IN $$ POWER
337 WWUS53 KLBF 211014 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 514 AM CDT SUN AUG 21 2011 NEC031-211024- /O.EXP.KLBF.SV.W.0313.000000T0000Z-110821T1015Z/ CHERRY NE- 514 AM CDT SUN AUG 21 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CHERRY COUNTY WILL EXPIRE AT 515 AM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4291 10046 4269 10067 4300 10120 4301 10071 TIME...MOT...LOC 1014Z 293DEG 20KT 4291 10067 $$ POWER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 8:58 AM MDT | Severe Thunderstorm Warning | LBF | Brown, Rock | 62 min |
| Aug 21, 9:48 AM MDT | Severe Thunderstorm Warning | LBF | Garfield, Loup | 57 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.