Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 7, NWS North Platte, NE

May 30, 2011Brown County, Loup County, Rock County, Nebraska

NWS North Platte, NE issued this tornado warning at May 30, 2011, 5:24 PM CDT for Brown County, Loup County, Rock County, Nebraska. It was in force for 36 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
May 30, 2011, 5:24 PM CDT (22:24 UTC)
Expired
May 30, 2011, 6:00 PM CDT
In force
36 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon

Counties Brown County, NE, Loup County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 83 km from the middle of the area, began a volume at 22:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 30, 2:08 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.4 hours before the alert went out and 139 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.

Skew-T log-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2011-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1099 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2011-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 296 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1099 J/kg
Mixed-layer CIN
-360 J/kg
Mixed-layer LCL
2078 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
296 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

784 
WFUS53 KLBF 302224
TORLBF
NEC017-115-149-302300-
/O.NEW.KLBF.TO.W.0007.110530T2224Z-110530T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
524 PM CDT MON MAY 30 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHWESTERN LOUP COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHWESTERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 600 PM CDT

* AT 519 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 8 MILES NORTH OF ALMERIA MEADOW STATE WILDLIFE
  MANAGEMENT AREA...OR 12 MILES NORTHEAST OF BREWSTER...AND MOVING
  NORTH AT 45 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  ROSE AROUND 535 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.

&&

LAT...LON 4223 9937 4200 9962 4203 9969 4208 9968
      4208 9973 4209 9973 4232 9961
TIME...MOT...LOC 2224Z 202DEG 39KT 4210 9964

$$

TAYLOR
1 follow-up statement
587 
WWUS53 KLBF 302239
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
539 PM CDT MON MAY 30 2011

NEC017-115-149-302300-
/O.CON.KLBF.TO.W.0007.000000T0000Z-110530T2300Z/
BROWN NE-LOUP NE-ROCK NE-
539 PM CDT MON MAY 30 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN ROCK...
NORTHWESTERN LOUP AND SOUTHEASTERN BROWN COUNTIES UNTIL 600 PM CDT...

AT 538 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR ROSE...OR 25 MILES NORTHEAST OF BREWSTER...
MOVING NORTHEAST AT 20 MPH.

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHWESTERN
LOUP...SOUTHEASTERN BROWN AND SOUTHWESTERN ROCK COUNTIES.

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 4223 9937 4200 9962 4203 9969 4208 9968
      4208 9973 4209 9973 4232 9961
TIME...MOT...LOC 2239Z 205DEG 17KT 4218 9950

$$

TAYLOR

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 10:08 PM CDTSevere Thunderstorm WarningLBFHolt52 min
May 29, 10:59 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt30 min
May 30, 3:57 AM CDTWind AdvisoryLBFBlaine, Brown, Chase, Custer, Frontier, Garfield and 11 more14 hr
May 30, 3:03 PM CDTSevere Thunderstorm WarningLBFKeya Paha, Rock42 min
May 30, 3:09 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer36 min
May 30, 3:43 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown47 min
May 30, 4:08 PM CDTSevere Thunderstorm WarningLBFBrown, Rock52 min
May 30, 4:18 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Logan42 min
May 30, 4:28 PM CDTTornado WarningLBFRock32 min
May 30, 4:47 PM CDTTornado WarningLBFHolt, Rock28 min
May 30, 4:55 PM CDTTornado WarningLBFBlaine35 min
May 30, 5:01 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Logan44 min
May 30, 5:03 PM CDTSevere Thunderstorm WarningLBFBoyd16 min
May 30, 5:10 PM CDTTornado WarningLBFHolt35 min
May 30, 5:33 PM CDTFlash Flood WarningLBFBlaine3 hr
May 30, 5:37 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Rock38 min
May 30, 5:43 PM CDTTornado WarningLBFBoyd, Holt32 min
May 30, 5:46 PM CDTTornado WarningLBFHolt, Rock29 min
May 30, 5:50 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer40 min
May 30, 5:50 PM CDTSevere Thunderstorm WarningLBFArthur, Garden, Grant, Sheridan40 min
May 30, 6:11 PM CDTSevere Thunderstorm WarningLBFHolt, Rock49 min
May 30, 6:17 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Loup, Rock43 min
May 30, 6:22 PM CDTHigh Wind WarningLBFChase, Frontier, Hayes, Keith, Lincoln, Logan and 2 more98 min
May 30, 6:25 PM CDTSevere Thunderstorm WarningLBFCherry, Sheridan50 min
May 30, 6:33 PM CDTSevere Thunderstorm WarningLBFCuster42 min
May 30, 6:40 PM CDTTornado WarningLBFHolt35 min
May 30, 6:54 PM CDTTornado WarningLBFBoyd, Holt21 min
May 30, 6:56 PM CDTSevere Thunderstorm WarningLBFLoup49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.