Alert archive / Nebraska / Flash Flood Warnings in 2008

Flash Flood Warning 21, NWS North Platte, NE

June 23, 2008Frontier County, Hayes County, Lincoln County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jun 23, 2008, 11:30 PM CDT for Frontier County, Hayes County, Lincoln County, Nebraska. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 23, 2008, 11:30 PM CDT (04:30 UTC)
Expired
Jun 24, 2008, 5:30 AM CDT
In force
6 hr
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Flood severity
None

Counties Frontier County, NE, Hayes County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 04:30 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.5 hours before the alert went out and 62 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 2008-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1839 joules per kilogram.LCLLFCEL10008507005003002001001 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, N. Platte/Lee Bi, NE at 00:00Z on 2008-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
1839 J/kg
Mixed-layer CIN
-110 J/kg
Mixed-layer LCL
1349 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.5
Supercell composite
9.9

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLBF 240431
FFWLBF
NEC063-085-111-241030-
/O.NEW.KLBF.FF.W.0021.080624T0430Z-080624T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1130 PM CDT MON JUN 23 2008

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FRONTIER COUNTY IN SOUTHWEST NEBRASKA...
  THIS INCLUDES THE CITY OF CURTIS...
  EASTERN HAYES COUNTY IN SOUTHWEST NEBRASKA...
  THIS INCLUDES THE CITY OF HAYES CENTER...
  SOUTHERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 530 AM CDT

* AT 1125 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM THUNDERSTORMS ALONG A LINE EXTENDING FROM 6
  MILES NORTH OF DICKENS TO HAYES CENTER...OR ALONG A LINE EXTENDING
  FROM 18 MILES SOUTHWEST OF NORTH PLATTE TO HAYES CENTER...MOVING
  EAST AT 20 MPH.

* THUNDERSTORMS PRODUCING FLASH FLOODING WILL BE NEAR...
  WELLFLEET BY MIDNIGHT CDT...
  RED WILLOW RESERVOIR STATE RECREATION AREA BY 1210 AM CDT...
  MAYWOOD BY 1215 AM CDT...
  HANSEN MEMORIAL RESERVE STATE WILDLIFE MANAGEMENT AREA BY 1225 AM
  CDT...
  CURTIS BY 1230 AM CDT...
  STOCKVILLE AND MOOREFIELD BY 1250 AM CDT...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS...OR LOW LYING AREAS 
SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO 
NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN 
DEPTH BY FOOT OR BY AUTOMOBILE.

LAT...LON 4034 10111 4105 10116 4106 10027 4103 10021
      4070 10020 4068 9998 4044 9997 4044 9999
      4044 10007 4035 10008 4033 10016
TIME...MOT...LOC 0430Z 292DEG 20KT 4090 10094 4050 10093

$$

JWS
1 follow-up statement
000 
WGUS73 KLBF 240719
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
218 AM CDT TUE JUN 24 2008

NEC063-085-111-241030-
/O.CON.KLBF.FF.W.0021.000000T0000Z-080624T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN NE-HAYES NE-FRONTIER NE-
218 AM CDT TUE JUN 24 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM CDT FOR
FRONTIER...EASTERN HAYES AND SOUTHERN LINCOLN COUNTIES...

AT 211 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 12 MILES SOUTHEAST OF EUSTIS TO
27 MILES SOUTHEAST OF MEDICINE CREEK RESERVOIR STATE RECREATION
AREA...OR ALONG A LINE EXTENDING FROM 16 MILES SOUTH OF LEXINGTON TO
31 MILES SOUTHWEST OF HOLDREGE...MOVING EAST AT 23 MPH.

ADDITIONAL RAINFALL OF UP TO AN INCH IS POSSIBLE IN THE WARNED AREA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN NORTH
PLATTE.

LAT...LON 4034 10111 4105 10116 4106 10027 4103 10021
      4070 10020 4068 9998 4044 9997 4044 9999
      4044 10007 4035 10008 4033 10016
TIME...MOT...LOC 0718Z 292DEG 20KT 4055 9980 4015 9979

$$

SPRINGER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 7:00 PM CDTSevere Thunderstorm WarningLBFCherry45 min
Jun 23, 7:44 PM CDTSevere Thunderstorm WarningLBFCherry61 min
Jun 23, 7:58 PM CDTSevere Thunderstorm WarningLBFDeuel, Garden47 min
Jun 23, 8:44 PM CDTSevere Thunderstorm WarningLBFCherry61 min
Jun 23, 8:49 PM CDTSevere Thunderstorm WarningLBFCherry, Grant, Sheridan56 min
Jun 23, 8:58 PM CDTTornado WarningLBFCherry47 min
Jun 23, 9:43 PM CDTTornado WarningLBFCherry47 min
Jun 23, 9:47 PM CDTSevere Thunderstorm WarningLBFCherry43 min
Jun 23, 10:10 PM CDTSevere Thunderstorm WarningLBFChase, Hayes35 min
Jun 23, 10:30 PM CDTSevere Thunderstorm WarningLBFCherry, Grant30 min
Jun 23, 10:42 PM CDTSevere Thunderstorm WarningLBFHayes63 min
Jun 23, 11:01 PM CDTSevere Thunderstorm WarningLBFCherry, Grant, Hooker29 min
Jun 23, 11:05 PM CDTSevere Thunderstorm WarningLBFLincoln40 min
Jun 23, 11:19 PM CDTSevere Thunderstorm WarningLBFFrontier, Hayes56 min
Jun 23, 11:31 PM CDTSevere Thunderstorm WarningLBFGrant, Hooker29 min
Jun 23, 11:41 PM CDTTornado WarningLBFGrant, Hooker34 min
Jun 24, 12:12 AM CDTTornado WarningLBFGrant, Hooker, McPherson33 min
Jun 24, 12:22 AM CDTTornado WarningLBFGrant, Hooker, McPherson23 min
Jun 24, 12:38 AM CDTSevere Thunderstorm WarningLBFLincoln34 min
Jun 24, 12:50 AM CDTSevere Thunderstorm WarningLBFCuster40 min

Nearby

Flash Flood Warnings in Nebraska, 2008Every flash flood warning in 2008

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.