Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 41, NWS North Platte, NE

April 14, 2012Custer County, Garfield County, Loup County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 14, 2012, 8:39 PM CDT for Custer County, Garfield County, Loup County, Nebraska. It was in force for 51 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: Apr 14, 2012, 8:39 PM CDT (01:39 UTC)
Expired: Apr 14, 2012, 9:30 PM CDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Custer County, NE, Garfield County, NE, Loup County, NE

The radar

The North Platte radar (KLNX), 120 km from the middle of the area, began a volume at 01:41 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
Apr 14, 2:33 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.7 hours before the alert went out and 239 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 871 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 483 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

773 
WUUS53 KLBF 150139
SVRLBF
NEC041-071-115-150230-
/O.NEW.KLBF.SV.W.0041.120415T0139Z-120415T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
839 PM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CUSTER COUNTY IN CENTRAL NEBRASKA...
  SOUTHERN GARFIELD COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHEASTERN LOUP COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 930 PM CDT

* AT 837 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 SOUTH OF ALMERIA TO 6 MILES EAST OF
  CALLAWAY...AND MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  TAYLOR...PRESSEY STATE WILDLIFE MANAGEMENT AREA AND BROKEN BOW
  AROUND 845 PM CDT.
  KENT DIVERSION DAM STATE WILDLIFE MANAGEMENT AREA...WEISSERT...
  SARGENT AND BERWYN AROUND 855 PM CDT.
  BURWELL...COMSTOCK AND WESTERVILLE AROUND 905 PM CDT.
  ARCADIA DIVERSION DAM STATE WILDLIFE MANAGEMENT AREA AND ANSLEY
  AROUND 910 PM CDT.
  MASON CITY AROUND 920 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
HIGHWAY 183 MILE MARKER 120...HIGHWAY 92 MILE MARKER 300 AND HIGHWAY
91 MILE MARKER 70.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4174 9888 4173 9920 4118 9920 4118 9996
      4188 9952 4187 9881
TIME...MOT...LOC 0139Z 271DEG 34KT 4174 9949 4126 9978
WIND...HAIL <50MPH 1.00IN

$$

JACOBS

3 follow-up statements

448 
WWUS53 KLBF 150201
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
901 PM CDT SAT APR 14 2012

NEC041-071-115-150230-
/O.CON.KLBF.SV.W.0041.000000T0000Z-120415T0230Z/
CUSTER NE-GARFIELD NE-LOUP NE-
901 PM CDT SAT APR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
LOUP...SOUTHERN GARFIELD AND NORTHEASTERN CUSTER COUNTIES UNTIL 930
PM CDT...

AT 855 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 KENT DIVERSION
DAM STATE WILDLIFE MANAGEMENT AREA TO 8 MILES SOUTHWEST OF BERWYN...
MOVING EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BURWELL...WESTERVILLE AND COMSTOCK AROUND 905 PM CDT.
  ARCADIA DIVERSION DAM STATE WILDLIFE MANAGEMENT AREA AROUND 910 PM
  CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HIGHWAY 91
MILE MARKER 70.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4174 9888 4173 9920 4134 9921 4136 9977
      4188 9952 4187 9881
TIME...MOT...LOC 0200Z 271DEG 34KT 4173 9922 4125 9952
WIND...HAIL <50MPH 1.00IN

$$

JACOBS

061 
WWUS53 KLBF 150220
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
920 PM CDT SAT APR 14 2012

NEC041-071-115-150230-
/O.CON.KLBF.SV.W.0041.000000T0000Z-120415T0230Z/
CUSTER NE-GARFIELD NE-LOUP NE-
920 PM CDT SAT APR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
LOUP...SOUTHERN GARFIELD AND NORTHEASTERN CUSTER COUNTIES UNTIL 930
PM CDT...

AT 918 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 FORT HARTSUFF
STATE PARK TO ARCADIA DIVERSION DAM STATE WILDLIFE MANAGEMENT AREA...
MOVING EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
CUSTER...SOUTHEASTERN LOUP AND SOUTHERN GARFIELD COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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.

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 THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4137 9941 4187 9935 4187 9881 4174 9888
      4173 9920 4134 9921
TIME...MOT...LOC 0220Z 271DEG 34KT 4172 9897 4143 9926
WIND...HAIL <50MPH 1.00IN

$$

JACOBS

771 
WWUS53 KLBF 150226
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
926 PM CDT SAT APR 14 2012

NEC041-071-115-150236-
/O.EXP.KLBF.SV.W.0041.000000T0000Z-120415T0230Z/
CUSTER NE-GARFIELD NE-LOUP NE-
926 PM CDT SAT APR 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOUP...SOUTHERN
GARFIELD AND NORTHEASTERN CUSTER COUNTIES WILL EXPIRE AT 930 PM
CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.

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

LAT...LON 4137 9941 4187 9935 4187 9881 4174 9888
      4173 9920 4134 9921
TIME...MOT...LOC 0226Z 271DEG 34KT 4171 9889 4143 9919

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:01 PM CDT	Tornado Warning	LBF	Blaine, Loup	16 min
Apr 14, 7:05 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer	40 min
Apr 14, 7:18 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	42 min
Apr 14, 7:35 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	40 min
Apr 14, 7:41 PM CDT	Tornado Warning	LBF	Blaine, Custer, Loup	34 min
Apr 14, 8:07 PM CDT	Tornado Warning	LBF	Garfield, Holt, Loup, Rock	25 min
Apr 14, 8:13 PM CDT	Severe Thunderstorm Warning	LBF	Custer	47 min
Apr 14, 8:15 PM CDT	Severe Thunderstorm Warning	LBF	Custer	33 min
Apr 14, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Loup, Rock, Wheeler	46 min
Apr 14, 8:47 PM CDT	Severe Thunderstorm Warning	LBF	Keith, Lincoln, McPherson	43 min
Apr 14, 9:32 PM CDT	Severe Thunderstorm Warning	LBF	Custer	43 min
Apr 14, 11:18 PM CDT	River Flood Warning	LBF	Lincoln	21 hr
Apr 15, 3:59 PM CDT	High Wind Warning	LBF	Blaine, Boyd, Brown, Cherry, Custer, Garfield and 6 more	6 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.