Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 93, NWS North Platte, NE

May 19, 2012Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 19, 2012, 3:54 PM CDT for Custer County, Nebraska. It was in force for 51 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 19, 2012, 3:54 PM CDT (20:54 UTC)
Expired: May 19, 2012, 4:45 PM CDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Custer County, NE

The radar

The North Platte radar (KLNX), 76 km from the middle of the area, began a volume at 20:53 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 19, 4:14 PM CDT	HAIL 1	3 W Merna, 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, 8.9 hours before the alert went out and 71 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: 177 J/kg
Mixed-layer CIN: -495 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 423 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

878 
WUUS53 KLBF 192054
SVRLBF
NEC041-192145-
/O.NEW.KLBF.SV.W.0093.120519T2054Z-120519T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
354 PM CDT SAT MAY 19 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CUSTER COUNTY IN CENTRAL NEBRASKA...

* UNTIL 445 PM CDT

* AT 349 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 10
  MILES SOUTH OF ARNOLD TO 6 MILES WEST OF CALLAWAY TO CALLAWAY...AND
  MOVING NORTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MERNA AND BROKEN BOW AROUND 420 PM CDT.
  VICTORIA SPRINGS STATE RECREATION AREA AROUND 435 PM CDT.
  ANSELMO AROUND 440 PM CDT.
  GATES AROUND 445 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
HIGHWAY 92 MILE MARKER 260.

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 4172 10010 4173 9963 4164 9938 4116 9981
      4125 10007 4125 10023
TIME...MOT...LOC 2054Z 214DEG 29KT 4131 10017 4133 10000
          4132 10000 4128 9985
WIND...HAIL <50MPH 1.00IN

$$

POWER

4 follow-up statements

482 
WWUS53 KLBF 192112
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
412 PM CDT SAT MAY 19 2012

NEC041-192145-
/O.CON.KLBF.SV.W.0093.000000T0000Z-120519T2145Z/
CUSTER NE-
412 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CUSTER COUNTY
UNTIL 445 PM CDT...

AT 407 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 6 MILES EAST OF
ARNOLD TO 9 MILES NORTH OF CALLAWAY TO 8 MILES NORTH OF CALLAWAY TO 7
MILES WEST OF BROKEN BOW...MOVING NORTHEAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  MERNA AND BROKEN BOW AROUND 420 PM CDT.
  VICTORIA SPRINGS STATE RECREATION AREA AROUND 435 PM CDT.
  ANSELMO AROUND 440 PM CDT.
  GATES AROUND 445 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HIGHWAY 92
MILE MARKER 260.

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 4172 10010 4173 9963 4164 9938 4116 9981
      4125 10007 4125 10023
TIME...MOT...LOC 2112Z 214DEG 29KT 4143 10006 4145 9989
          4144 9989 4140 9974
WIND...HAIL <50MPH 1.00IN

$$

POWER

253 
WWUS53 KLBF 192124
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
424 PM CDT SAT MAY 19 2012

NEC041-192145-
/O.CON.KLBF.SV.W.0093.000000T0000Z-120519T2145Z/
CUSTER NE-
424 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
CUSTER COUNTY UNTIL 445 PM CDT...

AT 421 PM CDT...THE PUBLIC REPORTED A LINE OF SEVERE THUNDERSTORMS
PRODUCING QUARTER SIZE HAIL.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTHWEST OF ANSELMO TO VICTORIA SPRINGS STATE
RECREATION AREA TO 7 MILES NORTHEAST OF MERNA...MOVING NORTHEAST AT
45 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  GATES AROUND 430 PM CDT.

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

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 4172 10010 4173 9963 4164 9938 4136 9966
      4145 9989 4147 10016
TIME...MOT...LOC 2124Z 211DEG 38KT 4159 9994 4161 9977
          4160 9977 4156 9962
WIND...HAIL <50MPH 1.00IN

$$

POWER

992 
WWUS53 KLBF 192133
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
433 PM CDT SAT MAY 19 2012

NEC041-192145-
/O.CON.KLBF.SV.W.0093.000000T0000Z-120519T2145Z/
CUSTER NE-
433 PM CDT SAT MAY 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
CUSTER COUNTY UNTIL 445 PM CDT...

AT 430 PM CDT...THE PUBLIC REPORTED A LINE OF SEVERE THUNDERSTORMS
PRODUCING QUARTER SIZE HAIL.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ANSELMO TO VICTORIA SPRINGS STATE RECREATION AREA TO
GATES...MOVING NORTHEAST AT 45 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF NORTHERN
CUSTER 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 4172 10010 4173 9963 4164 9938 4136 9966
      4145 9989 4147 10016
TIME...MOT...LOC 2133Z 211DEG 38KT 4168 9988 4169 9971
          4168 9971 4164 9956
WIND...HAIL <50MPH 1.00IN

$$

POWER

739 
WWUS53 KLBF 192143
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
443 PM CDT SAT MAY 19 2012

NEC041-192153-
/O.EXP.KLBF.SV.W.0093.000000T0000Z-120519T2145Z/
CUSTER NE-
443 PM CDT SAT MAY 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CUSTER COUNTY WILL
EXPIRE AT 445 PM CDT/345 PM MDT/...

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

LAT...LON 4172 10010 4173 9963 4164 9938 4136 9966
      4145 9989 4147 10016
TIME...MOT...LOC 2143Z 211DEG 38KT 4177 9981 4178 9963
          4177 9963 4173 9948

$$

POWER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:25 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Grant	50 min
May 19, 8:52 AM CDT	Severe Thunderstorm Warning	LBF	McPherson	38 min
May 19, 9:32 AM CDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	43 min
May 19, 1:16 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Frontier, Hayes	44 min
May 19, 1:42 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln	31 min
May 19, 1:58 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	47 min
May 19, 2:39 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	51 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.