Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 169, NWS North Platte, NE

August 2, 2012Garden County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 2, 2012, 4:11 PM MDT for Garden County, Nebraska. It was in force for 44 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: Aug 2, 2012, 4:11 PM MDT (22:11 UTC)
Expired: Aug 2, 2012, 4:55 PM MDT
In force: 44 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Garden County, NE

The radar

The North Platte radar (KLNX), 170 km from the middle of the area, began a volume at 22:14 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 2, 4:14 PM MDT	HAIL 0.75	Lisco, NE

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 12:00Z, 10.2 hours before the alert went out and 166 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: 452 J/kg
Mixed-layer CIN: -322 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 0 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.

397 
WUUS53 KLBF 022211
SVRLBF
NEC069-022315-
/O.NEW.KLBF.SV.W.0169.120802T2211Z-120802T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
411 PM MDT THU AUG 2 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 515 PM MDT

* AT 409 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
  LISCO...OR 14 MILES NORTHWEST OF OSHKOSH...AND MOVING EAST AT 15
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  OSHKOSH...DOGTOWN FLATS AND HIGHWAY 26 MILE MARKER 100.

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 4151 10264 4160 10264 4159 10221 4134 10225
      4141 10265 4151 10265
TIME...MOT...LOC 2211Z 278DEG 11KT 4150 10257
WIND...HAIL 60MPH 1.00IN

$$

SPRINGER

2 follow-up statements

155 
WWUS53 KLBF 022242
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
542 PM CDT THU AUG 2 2012

NEC069-022315-
/O.CON.KLBF.SV.W.0169.000000T0000Z-120802T2315Z/
GARDEN NE-
442 PM MDT THU AUG 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL GARDEN
COUNTY UNTIL 515 PM MDT...

AT 437 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH.  THIS STORM WAS LOCATED 8 MILES EAST OF LISCO...OR 8 MILES
NORTHWEST OF OSHKOSH...MOVING EAST AT 15 MPH. PENNY SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  OSHKOSH...DOGTOWN FLATS AND HIGHWAY 26 MILE MARKER 100.

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.

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4151 10264 4160 10264 4159 10221 4134 10225
      4141 10265 4151 10265
TIME...MOT...LOC 2242Z 278DEG 11KT 4149 10244
WIND...HAIL 70MPH 0.75IN

$$

SPRINGER

194 
WWUS53 KLBF 022255
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
555 PM CDT THU AUG 2 2012

NEC069-022304-
/O.CAN.KLBF.SV.W.0169.000000T0000Z-120802T2315Z/
GARDEN NE-
455 PM MDT THU AUG 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GARDEN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
SOUTHERN GARDEN COUNTY UNTIL 5 PM MDT.

REMEMBER...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN GARDEN 
COUNTY UNTIL 5 PM MDT.

LAT...LON 4151 10264 4160 10264 4159 10221 4134 10225
      4141 10265 4151 10265
TIME...MOT...LOC 2254Z 278DEG 11KT 4148 10239

$$

SPRINGER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 6:06 PM MDT	Severe Thunderstorm Warning	LBF	Keith	23 min
Aug 1, 6:19 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	56 min
Aug 1, 6:28 PM MDT	Severe Thunderstorm Warning	LBF	Holt, Rock	62 min
Aug 1, 6:38 PM MDT	Severe Thunderstorm Warning	LBF	Garfield	52 min
Aug 1, 7:18 PM MDT	Severe Thunderstorm Warning	LBF	Lincoln	42 min
Aug 1, 7:23 PM MDT	Severe Thunderstorm Warning	LBF	Holt, Wheeler	52 min
Aug 2, 4:17 PM MDT	Severe Thunderstorm Warning	LBF	Garden	43 min
Aug 2, 4:23 PM MDT	Tornado Warning	LBF	Garden	37 min
Aug 2, 4:59 PM MDT	Tornado Warning	LBF	Deuel, Garden	31 min
Aug 2, 5:29 PM MDT	Tornado Warning	LBF	Deuel, Garden	31 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.