Alert archive / Nebraska / Tornado Warnings in 2011
Tornado Warning 56, NWS North Platte, NE
NWS North Platte, NE issued this tornado warning at Aug 17, 2011, 9:44 PM CDT for Brown County, Keya Paha County, Rock County, Nebraska. It was in force for 31 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 17, 2011, 9:44 PM CDT (02:44 UTC)
- Expired
- Aug 17, 2011, 10:15 PM CDT
- In force
- 31 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
Counties Brown County, NE, Keya Paha County, NE, Rock County, NE
The radar
The North Platte radar (KLNX), 99 km from the middle of the area, began a volume at 02:43 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 |
|---|---|---|---|
| Aug 17, 9:47 PM CDT | FUNNEL CLOUD | 17 Nnw Ainsworth, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 3:37 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.7 hours before the alert went out and 180 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
- 1270 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 7.5
The text
As transmitted, in the capitals the NWS used until 2016.
269 WFUS53 KLBF 180244 TORLBF NEC017-103-149-180315- /O.NEW.KLBF.TO.W.0056.110818T0244Z-110818T0315Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 944 PM CDT WED AUG 17 2011 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * TORNADO WARNING FOR... NORTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA... SOUTH CENTRAL KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA... WEST CENTRAL ROCK COUNTY IN NORTH CENTRAL NEBRASKA... * UNTIL 1015 PM CDT * AT 939 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR NORTH RIVER TRAIL...OR 13 MILES WEST OF SPRINGVIEW...AND MOVING SOUTHEAST AT 35 MPH. * THIS DANGEROUS STORM WILL BE NEAR... BOBCAT STATE WILDLIFE MANAGEMENT AREA AROUND 955 PM CDT. KELLER PARK STATE RECREATION AREA AROUND 1005 PM CDT. AINSWORTH AROUND 1010 PM CDT. LONG PINE AROUND 1015 PM CDT. OTHER LOCATIONS IMPACTED BY THIS DANGEROUS STORM INCLUDE HIGHWAY 7 MILE MARKER 40. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 4254 9945 4240 10006 4279 10010 4288 9991 TIME...MOT...LOC 0244Z 330DEG 30KT 4277 9997 $$ TAYLOR
3 follow-up statements
338 WWUS53 KLBF 180258 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 958 PM CDT WED AUG 17 2011 NEC017-103-149-180315- /O.CON.KLBF.TO.W.0056.000000T0000Z-110818T0315Z/ BROWN NE-KEYA PAHA NE-ROCK NE- 958 PM CDT WED AUG 17 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL ROCK...SOUTH CENTRAL KEYA PAHA AND NORTHERN BROWN COUNTIES UNTIL 1015 PM CDT... AT 957 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR KELLER PARK STATE RECREATION AREA...OR 10 MILES NORTH OF AINSWORTH...MOVING SOUTHEAST AT 35 MPH. THIS DANGEROUS STORM WILL BE NEAR... LONG PINE AND BASSETT AROUND 1015 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 4254 9945 4240 10006 4279 10010 4288 9991 TIME...MOT...LOC 0259Z 322DEG 32KT 4267 9977 $$ TAYLOR
163 WWUS53 KLBF 180306 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 1006 PM CDT WED AUG 17 2011 NEC103-180315- /O.CAN.KLBF.TO.W.0056.000000T0000Z-110818T0315Z/ KEYA PAHA NE- 1006 PM CDT WED AUG 17 2011 ...THE TORNADO WARNING FOR SOUTH CENTRAL KEYA PAHA COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4254 9945 4248 9982 4268 9990 4273 9978 TIME...MOT...LOC 0305Z 322DEG 32KT 4262 9972 $$ NEC017-149-180315- /O.CON.KLBF.TO.W.0056.000000T0000Z-110818T0315Z/ BROWN NE-ROCK NE- 1006 PM CDT WED AUG 17 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL ROCK AND NORTHEASTERN BROWN COUNTIES UNTIL 1015 PM CDT... AT 1001 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR KELLER PARK STATE RECREATION AREA...OR 9 MILES NORTHEAST OF AINSWORTH...MOVING SOUTHEAST AT 35 MPH. THIS DANGEROUS STORM WILL BE NEAR... LONG PINE AND BASSETT AROUND 1015 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 4254 9945 4248 9982 4268 9990 4273 9978 TIME...MOT...LOC 0305Z 322DEG 32KT 4262 9972 $$ TAYLOR
619 WWUS53 KLBF 180312 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 1012 PM CDT WED AUG 17 2011 NEC017-149-180322- /O.EXP.KLBF.TO.W.0056.000000T0000Z-110818T0315Z/ BROWN NE-ROCK NE- 1012 PM CDT WED AUG 17 2011 ...THE TORNADO WARNING FOR WEST CENTRAL ROCK AND NORTHEASTERN BROWN COUNTIES WILL EXPIRE AT 1015 PM CDT... THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA. LAT...LON 4254 9945 4248 9982 4268 9990 4273 9978 TIME...MOT...LOC 0312Z 322DEG 32KT 4257 9967 $$ TAYLOR
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 7:07 PM CDT | Tornado Warning | LBF | Cherry, Hooker | 38 min |
| Aug 17, 7:36 PM CDT | Severe Thunderstorm Warning | LBF | Chase | 39 min |
| Aug 17, 7:44 PM CDT | Tornado Warning | LBF | Hooker | 46 min |
| Aug 17, 8:13 PM CDT | Severe Thunderstorm Warning | LBF | Hooker, McPherson | 62 min |
| Aug 17, 9:10 PM CDT | Tornado Warning | LBF | Brown, Cherry, Keya Paha | 35 min |
| Aug 17, 10:09 PM CDT | Severe Thunderstorm Warning | LBF | Boyd, Brown, Holt, Keya Paha, Rock | 51 min |
| Aug 18, 4:22 PM CDT | Severe Thunderstorm Warning | LBF | Boyd | 53 min |
| Aug 18, 4:43 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 47 min |
| Aug 18, 4:54 PM CDT | Severe Thunderstorm Warning | LBF | Boyd, Holt | 66 min |
| Aug 18, 5:19 PM CDT | Tornado Warning | LBF | Holt | 26 min |
| Aug 18, 5:25 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 50 min |
| Aug 18, 5:53 PM CDT | Tornado Warning | LBF | Holt | 37 min |
| Aug 18, 6:39 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 66 min |
Nearby
Tornado Warnings in Nebraska, 2011Every tornado warning in 2011Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.