Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 66, NWS North Platte, NE

May 5, 2012Brown County, Holt County, Rock County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 5, 2012, 9:20 PM CDT for Brown County, Holt County, Rock County, Nebraska. It was in force for 40 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
May 5, 2012, 9:20 PM CDT (02:20 UTC)
Expired
May 5, 2012, 10:00 PM CDT
In force
40 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brown County, NE, Holt County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 105 km from the middle of the area, began a volume at 02:21 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.

What was reported inside it

TimeReportWhereRemark
May 5, 9:45 PM CDTHAIL 110 Sw Bassett, NEDELAYED REPORT FROM PUBLIC. EVENT TIME WAS ESTIMATED AS THE HAIL CAME IN SEVERAL ROUNDS.

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
May 5, 5:31 PM CDTTornado WatchSPC5 hr
May 5, 6:46 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.3 hours before the alert went out and 179 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 2012-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2096 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2012-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
2096 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
1143 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
430 m²/s²
Significant tornado parameter
1.1
Supercell composite
32.7

Open this sounding in Storm Lab

The text

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

264 
WUUS53 KLBF 060220 RRA
SVRLBF
NEC017-089-149-060300-
/O.NEW.KLBF.SV.W.0066.120506T0220Z-120506T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
920 PM CDT SAT MAY 5 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BROWN COUNTY IN NORTH CENTRAL NEBRASKA...
  WEST CENTRAL HOLT COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 1000 PM CDT

* AT 917 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 10
  MILES WEST OF TWIN LAKES STATE WILDLIFE MANAGEMENT AREA...OR 17
  MILES SOUTHEAST OF AINSWORTH...AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BASSETT...LONG PINE...NEWPORT...STUART AND HIGHWAY 183 MILE MARKER
  170.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4273 9969 4264 9901 4226 9964 4236 9984
TIME...MOT...LOC 0220Z 207DEG 18KT 4235 9968
WIND...HAIL 60MPH 1.00IN

$$

JACOBS
1 follow-up statement
608 
WWUS53 KLBF 060233
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
933 PM CDT SAT MAY 5 2012

NEC017-089-149-060300-
/O.CON.KLBF.SV.W.0066.000000T0000Z-120506T0300Z/
BROWN NE-HOLT NE-ROCK NE-
933 PM CDT SAT MAY 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
ROCK...WEST CENTRAL HOLT AND EAST CENTRAL BROWN COUNTIES UNTIL 1000
PM CDT...

AT 930 PM CDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM PRODUCING
QUARTER SIZE HAIL.  THIS STORM WAS LOCATED 10 MILES SOUTH OF LONG
PINE...OR 14 MILES SOUTHWEST OF BASSETT...MOVING NORTHEAST AT 20 MPH.

IN ADDITION...AT 930 PM CDT QUARTER SIZE HAIL WAS REPORTED 16 MILES 
EAST OF ELSMERE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  BASSETT...LONG PINE...NEWPORT...STUART AND HIGHWAY 183 MILE MARKER
  170.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4273 9969 4264 9901 4226 9964 4236 9984
TIME...MOT...LOC 0233Z 207DEG 18KT 4241 9964
WIND...HAIL <50MPH 1.00IN

$$

JACOBS

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 8:43 PM CDTSevere Thunderstorm WarningLBFLogan, Thomas47 min
May 5, 8:59 PM CDTSevere Thunderstorm WarningLBFBrown, Rock46 min
May 5, 9:20 PM CDTSevere Thunderstorm WarningLBFLincoln, Logan, McPherson40 min
May 5, 9:29 PM CDTSevere Thunderstorm WarningLBFBlaine, Logan, Thomas46 min
May 5, 9:35 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Cherry, Thomas40 min
May 5, 9:36 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt, Keya Paha, Rock39 min
May 5, 9:42 PM CDTSevere Thunderstorm WarningLBFBrown, Rock48 min
May 5, 9:55 PM CDTSevere Thunderstorm WarningLBFBrown, Holt, Rock35 min
May 5, 10:00 PM CDTSevere Thunderstorm WarningLBFLincoln, Logan, McPherson45 min
May 5, 10:06 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Logan39 min
May 5, 10:10 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Holt, Loup, Rock50 min
May 5, 10:24 PM CDTSevere Thunderstorm WarningLBFLincoln51 min
May 5, 10:28 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer, Loup47 min
May 5, 10:30 PM CDTSevere Thunderstorm WarningLBFBrown, Holt, Rock60 min
May 5, 10:43 PM CDTSevere Thunderstorm WarningLBFLincoln, Logan47 min
May 5, 10:57 PM CDTSevere Thunderstorm WarningLBFHolt, Loup, Rock48 min
May 5, 11:02 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Loup, Rock29 min
May 5, 11:19 PM CDTSevere Thunderstorm WarningLBFLincoln41 min
May 5, 11:28 PM CDTSevere Thunderstorm WarningLBFCuster, Logan47 min
May 5, 11:29 PM CDTSevere Thunderstorm WarningLBFHolt46 min
May 6, 12:10 AM CDTSevere Thunderstorm WarningLBFCuster50 min
May 6, 12:23 AM CDTAreal Flood AdvisoryLBFLincoln, Logan, McPherson7 hr
May 6, 12:59 AM CDTSevere Thunderstorm WarningLBFCuster, Loup31 min
May 6, 3:20 AM CDTWind AdvisoryLBFChase, Custer, Frontier, Hayes, Lincoln, Perkins7 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2012Every severe thunderstorm warning in 2012

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.