Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 191, NWS North Platte, NE

August 11, 2012Deuel County, Garden County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 11, 2012, 6:17 PM MDT for Deuel County, Garden County, Nebraska. It was in force for 43 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 11, 2012, 6:17 PM MDT (00:17 UTC)
Expired: Aug 11, 2012, 7:00 PM MDT
In force: 43 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Deuel County, NE, Garden County, NE

The radar

The North Platte radar (KLNX), 163 km from the middle of the area, began a volume at 00:18 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, 6:44 PM MDT	TSTM WND GST 70	12 Sse Oshkosh, NE	LOTS OF NICKEL TO QUARTER SIZE HAIL COVERING YARD. PERSON WHO RELAYED REPORT SAID HE HAD NEVER SEEN ANYTHING LIKE IT.
Aug 11, 6:44 PM MDT	HAIL 1	12 Sse Oshkosh, NE	HAIL OF NICKEL TO QUARTER SIZE COVERING YARD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.3 hours before the alert went out and 149 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: 17 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 2587 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 184 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.

374 
WUUS53 KLBF 120017
SVRLBF
NEC049-069-120100-
/O.NEW.KLBF.SV.W.0191.120812T0017Z-120812T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
617 PM MDT SAT AUG 11 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL DEUEL COUNTY IN THE PANHANDLE OF NEBRASKA...
  SOUTHERN GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 700 PM MDT

* AT 613 PM MDT...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 7 MILES
  SOUTHEAST OF LISCO...OR 9 MILES WEST OF OSHKOSH...AND MOVING
  SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OSHKOSH AROUND 630 PM MDT.
  INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD AROUND 640 PM MDT.
  ASH HOLLOW STATE HISTORICAL PARK AND LEWELLEN AROUND 655 PM MDT.
  WINDLASS HILL AROUND 700 PM MDT.

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 4152 10252 4129 10205 4126 10205 4104 10238
      4143 10261
TIME...MOT...LOC 0017Z 310DEG 25KT 4143 10248
WIND...HAIL 60MPH 1.00IN

$$

JACOBS

2 follow-up statements

603 
WWUS53 KLBF 120033
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
733 PM CDT SAT AUG 11 2012

NEC049-069-120100-
/O.CON.KLBF.SV.W.0191.000000T0000Z-120812T0100Z/
DEUEL NE-GARDEN NE-
633 PM MDT SAT AUG 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
GARDEN AND CENTRAL DEUEL COUNTIES UNTIL 700 PM MDT...

AT 631 PM MDT...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 NEAR
INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD...OR 8 MILES SOUTH OF
OSHKOSH...MOVING SOUTHEAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  WINDLASS HILL AROUND 650 PM MDT.

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 4143 10242 4129 10206 4126 10206 4105 10237
      4105 10238 4134 10249
TIME...MOT...LOC 0032Z 310DEG 25KT 4130 10233
WIND...HAIL 60MPH 1.00IN

$$

JACOBS

209 
WWUS53 KLBF 120057
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
757 PM CDT SAT AUG 11 2012

NEC049-069-120106-
/O.EXP.KLBF.SV.W.0191.000000T0000Z-120812T0100Z/
DEUEL NE-GARDEN NE-
657 PM MDT SAT AUG 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GARDEN AND
CENTRAL DEUEL COUNTIES WILL EXPIRE AT 800 PM CDT/700 PM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

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

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST 
CENTRAL DEUEL COUNTY UNTIL 730 PM MDT.

LAT...LON 4143 10242 4129 10206 4126 10206 4105 10237
      4105 10238 4134 10249
TIME...MOT...LOC 0056Z 310DEG 25KT 4119 10216

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 6:46 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith, Perkins	44 min
Aug 11, 7:53 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	37 min
Aug 11, 8:29 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	46 min
Aug 11, 9:06 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	39 min
Aug 11, 9:45 PM MDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	45 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.