Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 82, NWS North Platte, NE

May 5, 2012Custer County, Logan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 5, 2012, 11:28 PM CDT for Custer County, Logan County, Nebraska. It was in force for 47 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, 11:28 PM CDT (04:28 UTC)
Expired: May 6, 2012, 12:15 AM CDT
In force: 47 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Custer County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 65 km from the middle of the area, began a volume at 04:30 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
May 6, 12:15 AM CDT	HAIL 1	2 Se Anselmo, 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
May 5, 6:46 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 5, 10:03 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.5 hours before the alert went out and 67 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: 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.

325 
WUUS53 KLBF 060428
SVRLBF
NEC041-113-060515-
/O.NEW.KLBF.SV.W.0082.120506T0428Z-120506T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1128 PM CDT SAT MAY 5 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 1215 AM CDT

* AT 1125 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE       
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS      
  LOCATED 6 MILES NORTHWEST OF ARNOLD...AND MOVING NORTHEAST AT 25   
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ANSELMO AROUND 1215 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HIGHWAY
2 MILE MARKER 250.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4149 9960 4138 10024 4139 10030 4156 10042
      4175 10014 4174 9983
TIME...MOT...LOC 0427Z 241DEG 22KT 4150 10024
WIND...HAIL 60MPH 1.50IN

$$

TAYLOR

2 follow-up statements

823 
WWUS53 KLBF 060448
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1148 PM CDT SAT MAY 5 2012

NEC041-113-060515-
/O.CON.KLBF.SV.W.0082.000000T0000Z-120506T0515Z/
CUSTER NE-LOGAN NE-
1148 PM CDT SAT MAY 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
LOGAN AND NORTHWESTERN CUSTER COUNTIES UNTIL 1215 AM CDT...

AT 1144 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND 
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 9 MILES 
NORTHEAST OF ARNOLD...MOVING NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ANSELMO AROUND 1215 AM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE HIGHWAY 2
MILE MARKER 250.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4149 9960 4138 10024 4139 10030 4156 10042
      4175 10014 4174 9983
TIME...MOT...LOC 0448Z 241DEG 22KT 4156 10009
WIND...HAIL 60MPH 1.75IN

$$

TAYLOR

222 
WWUS53 KLBF 060514
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1214 AM CDT SUN MAY 6 2012

NEC041-113-060523-
/O.EXP.KLBF.SV.W.0082.000000T0000Z-120506T0515Z/
CUSTER NE-LOGAN NE-
1214 AM CDT SUN MAY 6 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOGAN AND 
NORTHWESTERN CUSTER COUNTIES IS BEING REISSUED FOR NORTHERN CUSTER 
COUNTY...

PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MOST 
PARTS OF NORTH CENTRAL NEBRASKA UNTIL 5 AM CDT.

LAT...LON 4149 9960 4138 10024 4139 10030 4156 10042
      4175 10014 4174 9983
TIME...MOT...LOC 0513Z 241DEG 22KT 4163 9991

$$

CDC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 8:43 PM CDT	Severe Thunderstorm Warning	LBF	Logan, Thomas	47 min
May 5, 8:59 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	46 min
May 5, 9:20 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan, McPherson	40 min
May 5, 9:20 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Holt, Rock	40 min
May 5, 9:29 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Logan, Thomas	46 min
May 5, 9:35 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry, Thomas	40 min
May 5, 9:36 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha, Rock	39 min
May 5, 9:42 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	48 min
May 5, 9:55 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Holt, Rock	35 min
May 5, 10:00 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan, McPherson	45 min
May 5, 10:06 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Logan	39 min
May 5, 10:10 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Holt, Loup, Rock	50 min
May 5, 10:24 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	51 min
May 5, 10:28 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Loup	47 min
May 5, 10:30 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Holt, Rock	60 min
May 5, 10:43 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln, Logan	47 min
May 5, 10:57 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Loup, Rock	48 min
May 5, 11:02 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Loup, Rock	29 min
May 5, 11:19 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	41 min
May 5, 11:29 PM CDT	Severe Thunderstorm Warning	LBF	Holt	46 min
May 6, 12:10 AM CDT	Severe Thunderstorm Warning	LBF	Custer	50 min
May 6, 12:23 AM CDT	Areal Flood Advisory	LBF	Lincoln, Logan, McPherson	7 hr
May 6, 12:59 AM CDT	Severe Thunderstorm Warning	LBF	Custer, Loup	31 min
May 6, 3:20 AM CDT	Wind Advisory	LBF	Chase, Custer, Frontier, Hayes, Lincoln, Perkins	7 hr

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.