Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 39, NWS North Platte, NE

April 20, 2007Frontier County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 20, 2007, 8:23 PM CDT for Frontier County, Lincoln County, Nebraska. It was in force for 67 min. 10 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
Apr 20, 2007, 8:23 PM CDT (01:23 UTC)
Expired
Apr 20, 2007, 9:30 PM CDT
In force
67 min
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

Counties Frontier County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 147 km from the middle of the area, began a volume at 01:24 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 20, 8:23 PM CDTHAIL 114 S Maywood, NEPEA TO QUARTER SIZED HAIL. NO WIND.
Apr 20, 8:58 PM CDTHAIL 0.882 S Curtis, NENICKEL SIZED HAIL.
Apr 20, 9:00 PM CDTHAIL 0.7518 N Curtis, NE
Apr 20, 9:23 PM CDTTORNADO3 S Moorefield, NETORNADO ON GROUND. POWER LINES DOWN.
Apr 20, 9:23 PM CDTTORNADO5 Se Moorefield, NETORNADO TOUCHED DOWN AND DESTROYED A FARMSTEAD 5 MILES SOUTHEAST OF MOOREFIELD.
Apr 20, 9:26 PM CDTTORNADO10 Ne Curtis, NETORNADO CONFIRMED ON THE GROUND BY ROGER HILL.
Apr 20, 9:26 PM CDTTORNADO3 E Moorefield, NEA TORNADO DAMAGED A FARMSTEAD 3 MILES EAST OF MOOREFIELD.
Apr 20, 9:27 PM CDTTORNADO3 Ene Moorefield, NEA TORNADO DAMAGED A FARMSTEAD 3 MILES EAST NORTHEAST OF MOORFIELD.
Apr 20, 9:30 PM CDTTORNADO20 E Wellfleet, NE*** 2 INJ *** A TORNADO DESTROYED A FARMSTEAD 20 MILES EAST OF WELLFLEET. THREE PEOPLE WERE IN THE HOME AT THE TIME THE TORNADO HIT. TWO PEOPLE WERE REPORTED INJURED AND THROWN FROM THE HOME.
Apr 20, 9:32 PM CDTTORNADOMoorefield, NELARGE TORNADO NEAR MOOREFIELD.

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 00:00Z, 1.4 hours before the alert went out and 55 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, N. Platte/Lee Bi, NE at 00:00Z on 2007-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 333 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2007-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.193958Sfc1 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
333 J/kg
Mixed-layer CIN
-161 J/kg
Mixed-layer LCL
1187 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 210123
SVRLBF
NEC063-111-210230-
/O.NEW.KLBF.SV.W.0039.070421T0123Z-070421T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
823 PM CDT FRI APR 20 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN FRONTIER COUNTY IN SOUTHWEST NEBRASKA...
  THIS INCLUDES THE CITY OF CURTIS...
  SOUTHEASTERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 930 PM CDT

* AT 815 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM
  WAS LOCATED 14 MILES SOUTHWEST OF STOCKVILLE...OR ABOUT 15 MILES
  NORTH OF MCCOOK...AND MOVING NORTH AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MAYWOOD AND CURTIS BY 845 PM CDT...
  8 MILES WEST OF MOOREFIELD BY 850 PM CDT...
  HANSEN MEMORIAL RESERVE STATE WILDLIFE MANAGEMENT AREA AND 9 MILES
  EAST OF WELLFLEET BY 855 PM CDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4041 10076 4041 10048 4071 10027 4092 10023
      4091 10065 4071 10076

$$

CDC
3 follow-up statements
000 
WWUS53 KLBF 210134
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
834 PM CDT FRI APR 20 2007

NEC063-111-210230-
/O.CON.KLBF.SV.W.0039.000000T0000Z-070421T0230Z/
LINCOLN NE-FRONTIER NE-
834 PM CDT FRI APR 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR WESTERN FRONTIER AND SOUTHEASTERN LINCOLN COUNTIES...

AT 828 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
 THIS STORM WAS LOCATED NEAR HANSEN MEMORIAL RESERVE STATE WILDLIFE
MANAGEMENT AREA...OR ABOUT 9 MILES NORTHWEST OF CURTIS...MOVING NORTH
AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL CENTRAL LINCOLN COUNTY AT 850 PM CDT

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4041 10076 4041 10048 4071 10027 4092 10023
      4091 10065 4071 10076

$$

CDC
000 
WWUS53 KLBF 210143
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
843 PM CDT FRI APR 20 2007

NEC063-111-210230-
/O.CON.KLBF.SV.W.0039.000000T0000Z-070421T0230Z/
LINCOLN NE-FRONTIER NE-
843 PM CDT FRI APR 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR WESTERN FRONTIER AND SOUTHEASTERN LINCOLN COUNTIES...

AT 837 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING NICKEL SIZE HAIL.  THIS STORM WAS LOCATED 6 MILES WEST OF
STOCKVILLE...OR ABOUT 7 MILES SOUTH OF CURTIS...MOVING NORTHEAST AT
25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CURTIS BY 850 PM CDT...
  MOOREFIELD AND 7 MILES SOUTHEAST OF HANSEN MEMORIAL RESERVE STATE
  WILDLIFE MANAGEMENT AREA BY 900 PM CDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT
SATURDAY MORNING FOR WESTERN NEBRASKA.

LAT...LON 4041 10076 4041 10048 4071 10027 4092 10023
      4091 10065 4071 10076

$$

CDC
000 
WWUS53 KLBF 210202
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
901 PM CDT FRI APR 20 2007

NEC063-111-210230-
/O.CON.KLBF.SV.W.0039.000000T0000Z-070421T0230Z/
LINCOLN NE-FRONTIER NE-
901 PM CDT FRI APR 20 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR WESTERN FRONTIER AND SOUTHEASTERN LINCOLN COUNTIES...

AT 854 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED NEAR CURTIS...MOVING NORTH AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL SOUTHEASTERN LINCOLN COUNTY AT 920 PM CDT

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

HAIL UP TO NICKEL SIZE IN DIAMETER HAS BEEN REPORTED NEAR CURTIS 
WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE 
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT
SATURDAY MORNING FOR WESTERN NEBRASKA.

LAT...LON 4041 10076 4041 10048 4071 10027 4092 10023
      4091 10065 4071 10076

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 7:36 PM CDTSevere Thunderstorm WarningLBFHayes, Lincoln54 min
Apr 20, 9:11 PM CDTSevere Thunderstorm WarningLBFLincoln64 min
Apr 20, 9:23 PM CDTTornado WarningLBFFrontier, Lincoln37 min
Apr 20, 9:50 PM CDTSevere Thunderstorm WarningLBFCuster40 min
Apr 20, 9:53 PM CDTTornado WarningLBFLincoln37 min
Apr 20, 10:00 PM CDTSevere Thunderstorm WarningLBFLincoln30 min
Apr 20, 10:19 PM CDTSevere Thunderstorm WarningLBFCuster26 min
Apr 20, 10:26 PM CDTTornado WarningLBFCuster34 min
Apr 20, 10:30 PM CDTSevere Thunderstorm WarningLBFMcPherson45 min
Apr 20, 10:52 PM CDTSevere Thunderstorm WarningLBFCuster53 min
Apr 20, 10:57 PM CDTTornado WarningLBFCuster48 min
Apr 20, 11:07 PM CDTSevere Thunderstorm WarningLBFLogan, McPherson, Thomas53 min
Apr 20, 11:12 PM CDTSevere Thunderstorm WarningLBFHooker33 min
Apr 20, 11:27 PM CDTSevere Thunderstorm WarningLBFCuster63 min
Apr 20, 11:35 PM CDTSevere Thunderstorm WarningLBFCherry55 min
Apr 21, 12:03 AM CDTSevere Thunderstorm WarningLBFCuster27 min
Apr 21, 12:27 AM CDTTornado WarningLBFCherry33 min
Apr 21, 12:58 AM CDTSevere Thunderstorm WarningLBFGarfield47 min
Apr 21, 3:54 AM CDTWind AdvisoryLBFBlaine, Boyd, Brown, Chase, Custer, Frontier and 13 more9 hr
Apr 21, 4:55 PM CDTSevere Thunderstorm WarningLBFCherry50 min
Apr 21, 4:59 PM CDTSevere Thunderstorm WarningLBFCherry46 min
Apr 21, 5:34 PM CDTTornado WarningLBFCherry26 min
Apr 21, 5:35 PM CDTTornado WarningLBFCherry25 min
Apr 21, 5:39 PM CDTSevere Thunderstorm WarningLBFBrown, Keya Paha51 min
Apr 21, 5:40 PM CDTSevere Thunderstorm WarningLBFDeuel50 min
Apr 21, 5:57 PM CDTTornado WarningLBFGarden, Sheridan33 min
Apr 21, 5:59 PM CDTSevere Thunderstorm WarningLBFCherry31 min
Apr 21, 6:00 PM CDTSevere Thunderstorm WarningLBFCherry60 min
Apr 21, 6:10 PM CDTSevere Thunderstorm WarningLBFGarden35 min
Apr 21, 6:26 PM CDTSevere Thunderstorm WarningLBFBrown, Keya Paha64 min
Apr 21, 6:27 PM CDTSevere Thunderstorm WarningLBFCherry48 min
Apr 21, 6:27 PM CDTTornado WarningLBFGarden, Sheridan33 min
Apr 21, 6:28 PM CDTSevere Thunderstorm WarningLBFDeuel32 min
Apr 21, 6:35 PM CDTSevere Thunderstorm WarningLBFArthur25 min
Apr 21, 6:53 PM CDTSevere Thunderstorm WarningLBFGrant52 min
Apr 21, 6:57 PM CDTSevere Thunderstorm WarningLBFDeuel, Garden, Keith63 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2007Every severe thunderstorm warning in 2007

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.