Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 211, NWS North Platte, NE

July 10, 2011Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 10, 2011, 8:02 PM CDT for Custer County, Nebraska. It was in force for 58 min. 5 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
Jul 10, 2011, 8:02 PM CDT (01:02 UTC)
Expired
Jul 10, 2011, 9:00 PM CDT
In force
58 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

County Custer County, NE

The radar

The North Platte radar (KLNX), 71 km from the middle of the area, began a volume at 01:05 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

TimeReportWhereRemark
Jul 10, 8:15 PM CDTTSTM WND GST 603 Nnw Arnold, NE
Jul 10, 8:15 PM CDTHAIL 1.753 Nnw Arnold, NEALSO ESTIMATED 60 MILE PER HOUR WIND GUSTS WITH SMALL BRANCH DAMAGE.
Jul 10, 8:28 PM CDTHAIL 1.58 Ne Arnold, NE
Jul 10, 8:50 PM CDTHAIL 1.59 Nne Callaway, NE
Jul 10, 9:05 PM CDTHAIL 2.56 W Broken Bow, NESAID THERE WAS TREE DAMAGE WITH SPIKED HAILSTONES THE SIZE OF TENNIS BALLS.

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.

IssuedProductOfficeLasted
Jul 10, 7:24 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.0 hours before the alert went out and 69 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 00:00Z on 2011-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2656 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2011-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 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
2656 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1844 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.2
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

785 
WUUS53 KLBF 110102
SVRLBF
NEC041-110200-
/O.NEW.KLBF.SV.W.0211.110711T0102Z-110711T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
802 PM CDT SUN JUL 10 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CUSTER COUNTY IN CENTRAL NEBRASKA...

* UNTIL 900 PM CDT

* AT 801 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 5
  MILES EAST OF TARBOZ LAKE...OR 9 MILES NORTHWEST OF ARNOLD...AND
  MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ARNOLD...ANSELMO...MERNA...VICTORIA SPRINGS STATE RECREATION
  AREA...HIGHWAY 92 MILE MARKER 260 AND HIGHWAY 2 MILE MARKER 250.

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.

&&

LAT...LON 4141 9965 4141 10025 4142 10026 4173 10025
      4173 9968
TIME...MOT...LOC 0103Z 250DEG 27KT 4153 10028
WIND...HAIL 70MPH 1.00IN

$$

SPRINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 7:03 PM CDTSevere Thunderstorm WarningLBFMcPherson42 min
Jul 10, 7:30 PM CDTSevere Thunderstorm WarningLBFLogan, McPherson60 min
Jul 10, 8:33 PM CDTSevere Thunderstorm WarningLBFCuster31 min
Jul 10, 8:44 PM CDTSevere Thunderstorm WarningLBFFrontier, Hayes46 min
Jul 10, 8:52 PM CDTSevere Thunderstorm WarningLBFChase, Hayes38 min
Jul 10, 9:00 PM CDTSevere Thunderstorm WarningLBFCuster60 min
Jul 10, 9:26 PM CDTSevere Thunderstorm WarningLBFFrontier, Lincoln49 min
Jul 10, 9:31 PM CDTSevere Thunderstorm WarningLBFChase, Hayes, Lincoln, Perkins44 min
Jul 10, 9:58 PM CDTSevere Thunderstorm WarningLBFCuster62 min
Jul 10, 10:02 PM CDTSevere Thunderstorm WarningLBFLincoln43 min
Jul 10, 11:07 PM CDTSevere Thunderstorm WarningLBFGarfield, Wheeler38 min
Jul 11, 4:19 PM CDTSevere Thunderstorm WarningLBFSheridan56 min
Jul 11, 5:04 PM CDTFlash Flood WarningLBFSheridan6 hr
Jul 11, 5:12 PM CDTSevere Thunderstorm WarningLBFSheridan63 min
Jul 11, 6:14 PM CDTSevere Thunderstorm WarningLBFCherry, Sheridan61 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.