Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 49, NWS North Platte, NE

May 4, 2012Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 4, 2012, 3:34 PM CDT for Boyd County, Holt County, Nebraska. It was in force for 41 min. 3 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: May 4, 2012, 3:34 PM CDT (20:34 UTC)
Expired: May 4, 2012, 4:15 PM CDT
In force: 41 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Boyd County, NE, Holt County, NE

The radar

The Sioux Falls radar (KFSD), 170 km from the middle of the area, began a volume at 20:34 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
May 4, 3:50 PM CDT	HAIL 0.88	18 N Oneill, NE
May 4, 4:00 PM CDT	HAIL 1.75	18 Nne Oneill, NE
May 4, 4:03 PM CDT	HAIL 1.75	20 Ne Oneill, 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 4, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.6 hours before the alert went out and 235 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: 2705 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 584 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 98 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.

567 
WUUS53 KLBF 042034
SVRLBF
NEC015-089-042115-
/O.NEW.KLBF.SV.W.0049.120504T2034Z-120504T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
334 PM CDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 415 PM CDT

* AT 330 PM CDT...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
  MIDWAY...OR 12 MILES SOUTH OF SPENCER...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  REDBIRD STATE WILDLIFE MANAGEMENT AREA AND MONOWI.

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.

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

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4265 9869 4273 9874 4285 9831 4285 9830
      4278 9829 4266 9830
TIME...MOT...LOC 2034Z 258DEG 21KT 4271 9861
WIND...HAIL 60MPH 1.00IN

$$

JACOBS

3 follow-up statements

899 
WWUS53 KLBF 042050
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
350 PM CDT FRI MAY 4 2012

NEC015-089-042115-
/O.CON.KLBF.SV.W.0049.000000T0000Z-120504T2115Z/
BOYD NE-HOLT NE-
350 PM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
HOLT AND SOUTHEASTERN BOYD COUNTIES UNTIL 415 PM CDT...

AT 349 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 EAST OF MIDWAY...OR 14 MILES SOUTHEAST OF SPENCER...MOVING EAST
AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  REDBIRD STATE WILDLIFE MANAGEMENT AREA AND MONOWI.

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 IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF
SUPERCELLS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND POSSIBLY TORNADOES. BE PREPARED TO ACT QUICKLY SHOULD A
TORNADO OCCUR OR A TORNADO WARNING BE ISSUED.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4265 9869 4273 9874 4285 9831 4285 9830
      4278 9829 4266 9830
TIME...MOT...LOC 2050Z 261DEG 14KT 4271 9853
WIND...HAIL 60MPH 1.50IN

$$

JACOBS

299 
WWUS53 KLBF 042059
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
359 PM CDT FRI MAY 4 2012

NEC015-089-042115-
/O.CON.KLBF.SV.W.0049.000000T0000Z-120504T2115Z/
BOYD NE-HOLT NE-
359 PM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
HOLT AND SOUTHEASTERN BOYD COUNTIES UNTIL 415 PM CDT...

AT 358 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 NEAR
REDBIRD STATE WILDLIFE MANAGEMENT AREA...OR 16 MILES SOUTHEAST OF
SPENCER...MOVING EAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  REDBIRD STATE WILDLIFE MANAGEMENT AREA AND MONOWI.

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 IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF
SUPERCELLS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND POSSIBLY TORNADOES. BE PREPARED TO ACT QUICKLY SHOULD A
TORNADO OCCUR OR A TORNADO WARNING BE ISSUED.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4266 9861 4273 9867 4285 9831 4285 9830
      4278 9829 4266 9830
TIME...MOT...LOC 2059Z 261DEG 14KT 4271 9848
WIND...HAIL 60MPH 1.50IN

$$

JACOBS

981 
WWUS53 KLBF 042104
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
404 PM CDT FRI MAY 4 2012

NEC015-089-042115-
/O.CON.KLBF.SV.W.0049.000000T0000Z-120504T2115Z/
BOYD NE-HOLT NE-
404 PM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
HOLT AND SOUTHEASTERN BOYD COUNTIES UNTIL 415 PM CDT...

AT 358 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 NEAR
REDBIRD STATE WILDLIFE MANAGEMENT AREA...OR 16 MILES SOUTHEAST OF 
SPENCER...MOVING EAST AT 15 MPH.  

AT 359 PM CDT...GOLF BALL SIZE HAIL WAS REPORTED 18 MILES NORTH 
NORTHEAST OF ONEILL.

LOCATIONS IMPACTED INCLUDE...
  REDBIRD STATE WILDLIFE MANAGEMENT AREA AND MONOWI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

THIS IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF
SUPERCELLS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND POSSIBLY TORNADOES. BE PREPARED TO ACT QUICKLY SHOULD A
TORNADO OCCUR OR A TORNADO WARNING BE ISSUED.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4267 9856 4273 9860 4285 9831 4285 9830
      4278 9829 4266 9830
TIME...MOT...LOC 2103Z 261DEG 14KT 4271 9846
WIND...HAIL 60MPH 1.75IN

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 3:14 AM CDT	Dense Fog Advisory	LBF	Arthur, Chase, Custer, Deuel, Frontier, Hayes and 5 more	3 hr
May 4, 3:50 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker	40 min
May 4, 4:14 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	16 min
May 4, 4:35 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	40 min
May 4, 4:44 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	27 min
May 4, 5:10 PM CDT	Severe Thunderstorm Warning	LBF	Loup	50 min
May 4, 5:24 PM CDT	Tornado Warning	LBF	Loup	36 min
May 4, 5:41 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Loup	49 min
May 4, 5:50 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	29 min
May 4, 6:10 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	50 min
May 4, 6:32 PM CDT	Tornado Warning	LBF	Garfield, Wheeler	28 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.