Alert archive / Nebraska / Flash Flood Warnings in 2008

Flash Flood Warning 9, NWS North Platte, NE

June 4, 2008Chase County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jun 4, 2008, 5:22 PM MDT for Chase County, Nebraska. It was in force for 113 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
Jun 4, 2008, 5:22 PM MDT (23:22 UTC)
Expired
Jun 4, 2008, 7:15 PM MDT
In force
113 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Flood severity
None

County Chase County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.4 hours before the alert went out and 112 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 12:00Z on 2008-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 285 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 12:00Z on 2008-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 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
285 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
1268 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
82 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.

000 
WGUS53 KLBF 042324
FFWLBF
NEC029-050115-
/O.NEW.KLBF.FF.W.0009.080604T2322Z-080605T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
522 PM MDT WED JUN 4 2008

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHASE COUNTY IN SOUTHWEST NEBRASKA...
  THIS INCLUDES THE CITY OF IMPERIAL...

* UNTIL 715 PM MDT

* AT 516 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. INTENSE 
  RAINFALL WITH RATES OVER 2 INCHES PER HOUR WILL LIKELY PRODUCE 
  FLOODING IN THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CHAMPION   
  AND IMPERIAL

RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

LAT...LON 4038 10192 4052 10192 4069 10176 4070 10154
      4070 10153 4070 10135 4039 10135 4037 10176
TIME...MOT...LOC 2322Z 180DEG 0KT 4046 10180

$$

CDC
2 follow-up statements
000 
WGUS73 KLBF 042354
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
652 PM CDT WED JUN 4 2008

NEC029-050115-
/O.CON.KLBF.FF.W.0009.000000T0000Z-080605T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHASE NE-
552 PM MDT WED JUN 4 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM MDT FOR CHASE
COUNTY...

AT 549 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HIGHWAY 61 
MILE MARKER 50 AND MANY AREAS TO THE EAST OF THIS HIGHWAY.

RAINFALL AMOUNTS OF 2 TO 3 INCHES IN AN HOUR OR LESS IS LIKELY IN 
THE WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT WEDNESDAY EVENING
FOR THE PANHANDLE AND SOUTHWEST NEBRASKA.

LAT...LON 4038 10192 4052 10192 4069 10176 4070 10154
      4070 10153 4070 10135 4039 10135 4037 10176
TIME...MOT...LOC 2352Z 180DEG 0KT 4055 10153

$$

CDC
000 
WGUS73 KLBF 050111
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
808 PM CDT WED JUN 4 2008

NEC029-050118-
/O.EXP.KLBF.FF.W.0009.000000T0000Z-080605T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHASE NE-
708 PM MDT WED JUN 4 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 815 PM CDT/715 PM MDT/ FOR
CHASE COUNTY...

AT 708 PM MDT...RADAR INDICATED INTENSE RAINFALL HAS ENDED ACROSS 
CENTRAL AND NORTHERN CHASE COUNTY. ANOTHER INTENSE STORM ACROSS 
SOUTHERN CHASE COUNTY IS PRODUCING RAINFALL AT THE RATE OF 2 INCHES 
PER HOUR. THIS STORM IS EXPECTED TO EXIT THE COUNTY AT AROUND 730 
PM. THUS LOCALLY HEAVY RAINFALL AND MINOR FLOODING IS EXPECTED TO 
CONTINUE THROUGH 730 PM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM MDT WEDNESDAY EVENING
FOR THE PANHANDLE AND SOUTHWEST NEBRASKA.

LAT...LON 4038 10192 4052 10192 4069 10176 4070 10154
      4070 10153 4070 10135 4039 10135 4037 10176
TIME...MOT...LOC 0108Z 180DEG 0KT 4055 10153

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 3, 6:09 PM MDTTornado WarningLBFCherry, Hooker, Thomas51 min
Jun 3, 6:20 PM MDTTornado WarningLBFCherry, Hooker, Thomas40 min
Jun 3, 6:32 PM MDTTornado WarningLBFHooker, Thomas43 min
Jun 3, 6:57 PM MDTSevere Thunderstorm WarningLBFBlaine, Custer, Logan, Thomas24 min
Jun 3, 7:14 PM MDTTornado WarningLBFBlaine, Thomas46 min
Jun 3, 7:55 PM MDTSevere Thunderstorm WarningLBFCuster50 min
Jun 3, 8:44 PM MDTSevere Thunderstorm WarningLBFCuster46 min
Jun 4, 3:17 AM MDTFlash Flood WatchLBFBlaine, Boyd, Brown, Chase, Cherry, Custer and 15 more49 hr
Jun 4, 3:24 PM MDTSevere Thunderstorm WarningLBFFrontier, Lincoln39 min
Jun 4, 3:36 PM MDTTornado WarningLBFFrontier24 min
Jun 4, 3:57 PM MDTTornado WarningLBFFrontier, Lincoln33 min
Jun 4, 4:27 PM MDTTornado WarningLBFFrontier18 min
Jun 4, 4:36 PM MDTFlash Flood WarningLBFFrontier84 min
Jun 4, 4:38 PM MDTSevere Thunderstorm WarningLBFChase, Perkins52 min
Jun 4, 4:41 PM MDTTornado WarningLBFChase34 min
Jun 4, 5:14 PM MDTTornado WarningLBFChase31 min
Jun 4, 5:15 PM MDTAreal Flood WarningLBFHolt5 hr
Jun 4, 5:35 PM MDTTornado WarningLBFChase, Hayes25 min
Jun 4, 5:47 PM MDTTornado WarningLBFChase14 min
Jun 4, 5:50 PM MDTSevere Thunderstorm WarningLBFGarden, Grant, Sheridan55 min
Jun 4, 5:58 PM MDTTornado WarningLBFChase, Hayes32 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.