Alert archive / Nebraska / Tornado Warnings in 2012

Tornado Warning 17, NWS North Platte, NE

April 14, 20124 counties in Nebraska

NWS North Platte, NE issued this tornado warning at Apr 14, 2012, 8:07 PM CDT for 4 counties in Nebraska. It was in force for 25 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
Apr 14, 2012, 8:07 PM CDT (01:07 UTC)
Expired
Apr 14, 2012, 8:32 PM CDT
In force
25 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon

Counties Garfield County, NE, Holt County, NE, Loup County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 102 km from the middle of the area, began a volume at 01:08 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

TimeReportWhereRemark
Apr 14, 8:32 PM CDTHAIL 1.519 Sw Chambers, 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.

IssuedProductOfficeLasted
Apr 14, 2:33 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.1 hours before the alert went out and 260 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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.

710 
WFUS53 KLBF 150107
TORLBF
NEC071-089-115-149-150145-
/O.NEW.KLBF.TO.W.0017.120415T0107Z-120415T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
807 PM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN GARFIELD COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHWESTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...
  LOUP COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHEASTERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 845 PM CDT

* AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR ALMERIA...OR 11 MILES NORTHWEST OF TAYLOR...
  AND MOVING NORTHEAST AT 40 MPH.

  IN ADDITION...HAIL TO THE SIZE OF BASEBALLS IS POSSIBLE WITH THIS  
  STORM.

* THIS DANGEROUS STORM WILL BE NEAR...
  HORSESHOE BEND LAKE AROUND 815 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS DANGEROUS STORM INCLUDE HIGHWAY 183
MILE MARKER 140.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

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 4228 9936 4201 9891 4175 9943 4192 9966
TIME...MOT...LOC 0107Z 230DEG 34KT 4191 9948

$$

JACOBS
1 follow-up statement
975 
WWUS53 KLBF 150132
SVSLBF

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

NEC071-089-115-149-150140-
/O.CAN.KLBF.TO.W.0017.000000T0000Z-120415T0145Z/
GARFIELD NE-HOLT NE-LOUP NE-ROCK NE-
832 PM CDT SAT APR 14 2012

...THE TORNADO WARNING FOR SOUTHEASTERN ROCK...LOUP...SOUTHWESTERN
HOLT AND NORTHWESTERN GARFIELD COUNTIES IS CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN 
EFFECT FOR THE AREA.  HOWEVER HAIL...GUSTY WINDS AND HEAVY RAIN ARE 
STILL POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...TORNADIC THUNDERSTORMS MAY REDEVELOP...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 11 PM CDT.

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 4228 9936 4201 9891 4175 9943 4192 9966
TIME...MOT...LOC 0130Z 230DEG 34KT 4205 9925

$$

JACOBS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 7:01 PM CDTTornado WarningLBFBlaine, Loup16 min
Apr 14, 7:05 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer40 min
Apr 14, 7:18 PM CDTSevere Thunderstorm WarningLBFLincoln42 min
Apr 14, 7:35 PM CDTSevere Thunderstorm WarningLBFCuster, Lincoln, Logan40 min
Apr 14, 7:41 PM CDTTornado WarningLBFBlaine, Custer, Loup34 min
Apr 14, 8:13 PM CDTSevere Thunderstorm WarningLBFCuster47 min
Apr 14, 8:15 PM CDTSevere Thunderstorm WarningLBFCuster33 min
Apr 14, 8:29 PM CDTSevere Thunderstorm WarningLBFGarfield, Holt, Loup, Rock, Wheeler46 min
Apr 14, 8:39 PM CDTSevere Thunderstorm WarningLBFCuster, Garfield, Loup51 min
Apr 14, 8:47 PM CDTSevere Thunderstorm WarningLBFKeith, Lincoln, McPherson43 min
Apr 14, 9:32 PM CDTSevere Thunderstorm WarningLBFCuster43 min
Apr 14, 11:18 PM CDTRiver Flood WarningLBFLincoln21 hr
Apr 15, 3:59 PM CDTHigh Wind WarningLBFBlaine, Boyd, Brown, Cherry, Custer, Garfield and 6 more6 hr

Nearby

Tornado Warnings in Nebraska, 2012Every tornado warning in 2012Tornadoes 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.