Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 177, NWS North Platte, NE

August 3, 20125 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 3, 2012, 7:33 PM CDT for 5 counties in Nebraska. It was in force for 57 min. 2 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 3, 2012, 7:33 PM CDT (00:33 UTC)
Expired: Aug 3, 2012, 8:30 PM CDT
In force: 57 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Blaine County, NE, Brown County, NE, Cherry County, NE, Rock County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 40 km from the middle of the area, began a volume at 00:36 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 3, 8:15 PM CDT	HAIL 0.5	1 E Thedford, NE	REPORT WAS RELAYED THROUGH LAW ENFORCEMENT.
Aug 3, 8:15 PM CDT	HAIL 1	10 Sse Long Pine, 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 3, 7:11 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 118 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1191 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 2741 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

147 
WUUS53 KLBF 040033
SVRLBF
NEC009-017-031-149-171-040130-
/O.NEW.KLBF.SV.W.0177.120804T0033Z-120804T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
733 PM CDT FRI AUG 3 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BLAINE COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHEASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...
  CENTRAL ROCK COUNTY IN NORTH CENTRAL NEBRASKA...
  THOMAS COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 830 PM CDT

* AT 732 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 12 MILES SOUTH OF AINSWORTH TO
  6 MILES SOUTHEAST OF SENECA...AND MOVING SOUTHEAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  WILLOW LAKE STATE WILDLIFE MANAGEMENT AREA AROUND 740 PM CDT.
  THEDFORD AND ELSMERE AROUND 745 PM CDT.
  PURDUM AROUND 750 PM CDT.
  HIGHWAY 83 CROSSING THE DISMAL RIVER AROUND 820 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
HIGHWAY 83 MILE MARKER 140 AND HIGHWAY 2 MILE MARKER 220.

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 4246 9925 4174 10059 4174 10081 4202 10084
      4237 10015
TIME...MOT...LOC 0033Z 306DEG 20KT 4237 9984 4196 10077
WIND...HAIL 60MPH 1.00IN

$$

ROBERG

1 follow-up statement

109 
WWUS53 KLBF 040056
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
756 PM CDT FRI AUG 3 2012

NEC009-017-031-149-171-040130-
/O.CON.KLBF.SV.W.0177.000000T0000Z-120804T0130Z/
BLAINE NE-BROWN NE-ROCK NE-THOMAS NE-CHERRY NE-
756 PM CDT FRI AUG 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
CHERRY...THOMAS...CENTRAL ROCK...SOUTHERN BROWN AND NORTHWESTERN
BLAINE COUNTIES UNTIL 830 PM CDT...

AT 755 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
SOUTH OF LONG PINE...OR 12 MILES SOUTHEAST OF AINSWORTH...MOVING EAST
AT 20 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF CENTRAL
ROCK...NORTHWESTERN BLAINE...SOUTHEASTERN CHERRY...SOUTHERN BROWN AND
THOMAS COUNTIES...INCLUDING THE FOLLOWING LOCATIONS 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.

&&

LAT...LON 4240 9986 4246 9925 4174 10059 4174 10081
      4202 10084
TIME...MOT...LOC 0056Z 278DEG 16KT 4239 9975
WIND...HAIL 60MPH 1.00IN

$$

ROBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 7:45 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Holt, Rock	60 min
Aug 3, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Holt, Rock	47 min
Aug 3, 8:38 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	26 min
Aug 3, 9:22 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	38 min
Aug 3, 10:02 PM CDT	Severe Thunderstorm Warning	LBF	Logan, McPherson	43 min
Aug 3, 10:32 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	43 min
Aug 3, 11:07 PM CDT	Severe Thunderstorm Warning	LBF	Custer	53 min
Aug 3, 11:58 PM CDT	Severe Thunderstorm Warning	LBF	Custer	18 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2012 Every 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.