Alert archive / Nebraska / Tornado Warnings in 2011
Tornado Warning 49, NWS North Platte, NE
NWS North Platte, NE issued this tornado warning at Aug 11, 2011, 9:50 PM CDT for Blaine County, Cherry County, Thomas County, Nebraska. It was in force for 25 min. 3 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
- Aug 11, 2011, 9:50 PM CDT (02:50 UTC)
- Expired
- Aug 11, 2011, 10:15 PM CDT
- In force
- 25 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
Counties Blaine County, NE, Cherry County, NE, Thomas County, NE
The radar
The North Platte radar (KLNX), 35 km from the middle of the area, began a volume at 02:53 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 11, 9:53 PM CDT | TORNADO | 1 Wnw Purdum, NE | TORNADO SNAPPED OFF SEVERAL LARGE LIMBS FROM ELM TREES THAT WERE DISPLACED UP TO 300 FEET TO THE SOUTH. FOUR POWER POLES WERE BROKEN ON THE SOUTH SIDE OF THE ROAD AND AROUND 250 FEET OF BARB WIRE FENCING ON THE NORTH AND SOUTH SIDES OF THE ROAD WAS DAMAGED. |
| Aug 11, 10:02 PM CDT | HAIL 1.25 | 1 E Purdum, NE | NOTED WINDS WERE FROM THE SOUTH THEN RAPIDLY SWITCHED AROUND FROM THE NORTH AS THE STORM PASSED. |
| Aug 11, 10:22 PM CDT | FUNNEL CLOUD | 5 Se Purdum, 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 11, 4:38 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.8 hours before the alert went out and 111 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
- 2513 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 1288 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 19.6
The text
As transmitted, in the capitals the NWS used until 2016.
102
WFUS53 KLBF 120250
TORLBF
NEC009-031-171-120315-
/O.NEW.KLBF.TO.W.0049.110812T0250Z-110812T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
950 PM CDT THU AUG 11 2011
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN BLAINE COUNTY IN NORTH CENTRAL NEBRASKA...
SOUTHEASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...
NORTHEASTERN THOMAS COUNTY IN NORTH CENTRAL NEBRASKA...
* UNTIL 1015 PM CDT
* AT 950 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PURDUM...OR 17 MILES NORTHEAST OF
THEDFORD...AND MOVING SOUTHEAST AT 25 MPH.
* LOCATIONS IMPACTED INCLUDE...
PURDUM...HALSEY...HIGHWAY 2 MILE MARKER 230 AND HIGHWAY 91 MILE
MARKER 10.
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.
&&
LAT...LON 4216 10016 4209 10017 4209 10008 4192 9987
4185 10036 4212 10044 4221 10022
TIME...MOT...LOC 0250Z 332DEG 21KT 4209 10027
$$
SCHULTZ3 follow-up statements
678
WWUS53 KLBF 120258
SVSLBF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
958 PM CDT THU AUG 11 2011
NEC009-031-171-120315-
/O.CON.KLBF.TO.W.0049.000000T0000Z-110812T0315Z/
BLAINE NE-THOMAS NE-CHERRY NE-
958 PM CDT THU AUG 11 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN CHERRY...
NORTHEASTERN THOMAS AND NORTHWESTERN BLAINE COUNTIES UNTIL 1015 PM
CDT...
AT 957 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PURDUM...OR 17 MILES EAST OF THEDFORD...MOVING
SOUTH AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
HALSEY...HIGHWAY 2 MILE MARKER 230 AND HIGHWAY 91 MILE MARKER 10.
THIS IS AN EXTREMELY DANGEROUS SITUATION. DO NOT WAIT UNTIL YOU SEE
OR HEAR A TORNADO...TAKE COVER IMMEDIATELY!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4216 10016 4209 10017 4209 10008 4192 9987
4185 10036 4212 10044 4221 10022
TIME...MOT...LOC 0257Z 350DEG 22KT 4204 10026
$$
SCHULTZ061
WWUS53 KLBF 120305
SVSLBF
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1005 PM CDT THU AUG 11 2011
NEC009-031-171-120315-
/O.CON.KLBF.TO.W.0049.000000T0000Z-110812T0315Z/
BLAINE NE-THOMAS NE-CHERRY NE-
1005 PM CDT THU AUG 11 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN CHERRY...
NORTHEASTERN THOMAS AND NORTHWESTERN BLAINE COUNTIES UNTIL 1015 PM
CDT...
AT 1005 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PURDUM...OR 17 MILES EAST OF THEDFORD...MOVING
SOUTH AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
HALSEY...HIGHWAY 2 MILE MARKER 230 AND HIGHWAY 91 MILE MARKER 10.
THIS IS AN EXTREMELY DANGEROUS SITUATION. DO NOT WAIT UNTIL YOU SEE
OR HEAR A TORNADO...TAKE COVER IMMEDIATELY!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
&&
LAT...LON 4216 10016 4209 10017 4209 10008 4192 9987
4185 10036 4212 10044 4221 10022
TIME...MOT...LOC 0305Z 350DEG 22KT 4199 10025
$$
SCHULTZ154 WWUS53 KLBF 120311 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 1011 PM CDT THU AUG 11 2011 NEC031-120321- /O.CAN.KLBF.TO.W.0049.000000T0000Z-110812T0315Z/ CHERRY NE- 1011 PM CDT THU AUG 11 2011 ...THE TORNADO WARNING FOR SOUTHEASTERN CHERRY COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF SOUTHEASTERN CHERRY COUNTY. LAT...LON 4208 10008 4192 9987 4185 10036 4209 10043 TIME...MOT...LOC 0311Z 326DEG 10KT 4199 10023 $$ NEC009-171-120315- /O.CON.KLBF.TO.W.0049.000000T0000Z-110812T0315Z/ BLAINE NE-THOMAS NE- 1011 PM CDT THU AUG 11 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN THOMAS AND NORTHWESTERN BLAINE COUNTIES UNTIL 1015 PM CDT... AT 1010 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR PURDUM...OR 17 MILES EAST OF THEDFORD...MOVING SOUTHEAST AT 10 MPH. LOCATIONS IMPACTED INCLUDE... HALSEY...HIGHWAY 2 MILE MARKER 230 AND HIGHWAY 91 MILE MARKER 10. THIS IS AN EXTREMELY DANGEROUS SITUATION. DO NOT WAIT UNTIL YOU SEE OR HEAR A TORNADO...TAKE COVER IMMEDIATELY! PRECAUTIONARY/PREPAREDNESS ACTIONS... TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 4208 10008 4192 9987 4185 10036 4209 10043 TIME...MOT...LOC 0311Z 326DEG 10KT 4199 10023 $$ SCHULTZ
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 7:03 PM CDT | Severe Thunderstorm Warning | LBF | Boyd, Holt, Keya Paha, Rock | 42 min |
| Aug 11, 7:46 PM CDT | Severe Thunderstorm Warning | LBF | Boyd, Holt, Keya Paha, Rock | 44 min |
| Aug 11, 7:48 PM CDT | Tornado Warning | LBF | Brown, Cherry | 27 min |
| Aug 11, 7:55 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Keya Paha, Rock | 50 min |
| Aug 11, 8:02 PM CDT | Severe Thunderstorm Warning | LBF | Chase, Perkins | 28 min |
| Aug 11, 8:07 PM CDT | Tornado Warning | LBF | Brown, Cherry | 23 min |
| Aug 11, 8:21 PM CDT | Tornado Warning | LBF | Cherry | 39 min |
| Aug 11, 8:30 PM CDT | Severe Thunderstorm Warning | LBF | Chase | 45 min |
| Aug 11, 8:30 PM CDT | Tornado Warning | LBF | Brown, Cherry | 30 min |
| Aug 11, 8:40 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Holt, Keya Paha, Rock | 51 min |
| Aug 11, 8:58 PM CDT | Tornado Warning | LBF | Brown | 32 min |
| Aug 11, 8:59 PM CDT | Tornado Warning | LBF | Cherry | 31 min |
| Aug 11, 9:30 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Cherry, Thomas | 45 min |
| Aug 11, 10:14 PM CDT | Tornado Warning | LBF | Blaine, Thomas | 31 min |
| Aug 11, 10:29 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Loup | 46 min |
| Aug 11, 10:38 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Cherry | 52 min |
| Aug 11, 10:45 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 45 min |
| Aug 11, 11:17 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Garfield, Loup | 43 min |
| Aug 11, 11:25 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Cherry, Thomas | 65 min |
| Aug 12, 12:09 AM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Loup | 51 min |
| Aug 12, 1:00 AM CDT | Severe Thunderstorm Warning | LBF | Custer, Loup | 45 min |
| Aug 12, 1:24 AM CDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 66 min |
| Aug 12, 1:57 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 27 min |
| Aug 12, 2:41 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 49 min |
| Aug 12, 3:02 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 32 min |
| Aug 12, 3:57 AM CDT | Areal Flood Advisory | LBF | Brown, Cherry, Rock | 6 hr |
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.