Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 83, NWS North Platte, NE

May 5, 2012Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 5, 2012, 11:29 PM CDT for Holt County, Nebraska. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 5, 2012, 11:29 PM CDT (04:29 UTC)
Expired: May 6, 2012, 12:15 AM CDT
In force: 46 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Holt County, NE

The radar

The North Platte radar (KLNX), 166 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.

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, 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 223 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.

542 
WUUS53 KLBF 060429
SVRLBF
NEC089-060515-
/O.NEW.KLBF.SV.W.0083.120506T0429Z-120506T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1129 PM CDT SAT MAY 5 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HOLT COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 1215 AM CDT

* AT 1125 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 9 MILES SOUTHWEST OF HULL LAKE
  STATE WILDLIFE MANAGEMENT AREA TO 8 MILES NORTH OF EMMET TO 9 MILES
  NORTH OF AMELIA...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ONEILL...EMMET...MIDWAY...INMAN...REDBIRD STATE WILDLIFE MANAGEMENT
  AREA...HIGHWAY 11 MILE MARKER 170...HIGHWAY 281 MILE MARKER 190 AND
  HIGHWAY 281 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 4234 9847 4210 9907 4254 9898 4282 9919
      4288 9897 4280 9875 4275 9837 4262 9836
TIME...MOT...LOC 0429Z 257DEG 26KT 4278 9897 4260 9878
          4237 9892
WIND...HAIL 60MPH 1.00IN

$$

ROBERG

2 follow-up statements

690 
WWUS53 KLBF 060450
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1150 PM CDT SAT MAY 5 2012

NEC089-060515-
/O.CON.KLBF.SV.W.0083.000000T0000Z-120506T0515Z/
HOLT NE-
1150 PM CDT SAT MAY 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL HOLT
COUNTY UNTIL 1215 AM CDT...

AT 1148 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM SPENCER DAM TO
7 MILES SOUTH OF MIDWAY TO INMAN...MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF CENTRAL HOLT
COUNTY.

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 4234 9847 4210 9907 4240 9901 4254 9898
      4282 9882 4281 9879 4280 9875 4279 9870
      4278 9864 4275 9837 4262 9836
TIME...MOT...LOC 0450Z 257DEG 26KT 4278 9864 4260 9861
          4242 9851
WIND...HAIL <50MPH 1.00IN

$$

ROBERG

627 
WWUS53 KLBF 060512
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1212 AM CDT SUN MAY 6 2012

NEC089-060521-
/O.EXP.KLBF.SV.W.0083.000000T0000Z-120506T0515Z/
HOLT NE-
1212 AM CDT SUN MAY 6 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HOLT COUNTY WILL
EXPIRE AT 1215 AM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED
OUT OF THE WARNED AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 AM CDT.

LAT...LON 4234 9847 4210 9907 4240 9901 4254 9898
      4282 9882 4281 9879 4280 9875 4279 9870
      4278 9864 4275 9837 4262 9836
TIME...MOT...LOC 0511Z 257DEG 26KT 4281 9844 4263 9841
          4245 9831

$$

ROBERG

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, 11:28 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	47 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.