Alert archive / Nebraska / Flash Flood Warnings in 2003

Flash Flood Warning 4, NWS North Platte, NE

June 22, 2003Cherry County, Keya Paha County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jun 22, 2003, 12:58 AM MDT for Cherry County, Keya Paha County, Nebraska. It was in force for 2 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 22, 2003, 12:58 AM MDT (06:58 UTC)
Expired
Jun 22, 2003, 3:00 AM MDT
In force
2 hr
Issued by
NWS North Platte, NE
Area
Counties, with a storm outline in the text

Counties Cherry County, NE, Keya Paha County, NE

The radar

The North Platte radar (KLNX), 102 km from the middle of the area, began a volume at 06:59 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, 7.0 hours before the alert went out and 193 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 2003-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1967 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 2003-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
1967 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1792 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.2
Supercell composite
7.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLBF 220701
FFWLBF
NEC031-103-220900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
158 AM CDT SUN JUN 22 2003

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA
  NORTHEASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 400 AM CDT(300 AM MDT)

* AT 1249 AM MDT(149 AM CDT)...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED VERY HEAVY RAIN FROM 11 MILES SOUTH OF NENZEL TO
  SPRINGVIEW...OR FROM 25 MILES WEST OF VALENTINE TO 4 MILES   
  SOUTHEAST OF SPRINGVIEW...MOVING NORTHEAST AT 25 MPH.  2 TO 4 
  INCHES OF RAIN HAS FALLEN IN PARTS OF THE WARNED AREA INCLUDING 
  HIGHWAY 83 SOUTH OF VALENTINE AND HIGHWAY 12 BETWEEN VALENTINE AND 
  SPRINGVIEW.

* LOCATIONS IN THE WARNING INCLUDE BURTON...CROOKSTON...KILGORE...  
MERRITT RESERVOIR DAM...MILLS AND SPARKS...VALENTINE...

THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING FOR NORTHEAST 
CHERRY COUNTY WHICH WILL BE ALLOWED TO EXPIRE AS THE THREAT OF LARGE 
HAIL AND HIGH WINDS HAS SUBSIDED MOMENTARILY.

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. 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.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

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

LAT...LON 4296 10110 4263 10117 4264 10023 4288 10024
          4281 10007 4276 9965 4283 9929 4297 9930
          4297 10024

$$
CDC
2 follow-up statements
000 
WSUS73 KLBF 220808 CCA
FFSLBF
NEC031-103-220900-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
258 AM CDT SUN JUN 22 2003

...FLASH FLOOD WARNING THROUGH 4 AM CDT FOR NORTHEAST CHERRY AND 
KEYA PAHA COUNTIES...

* AT 249 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  CONTINUED TO INDICATE VERY HEAVY RAINFALL ALONG A LINE EXTENDING   
  FROM 11 MILES NORTHEAST OF CROOKSTON TO 20 MILES NORTHWEST OF   
  BURTON TO 11 MILES NORTHEAST OF MILLS.  RADAR INDICATES TWO VERY 
  IMPRESSIVE RAIN CENTERS DEVELOPING NORTH OF VALENTINE ALONG 
  HIGHWAY 83 NEAR THE SOUTH DAKOTA BORDER AND ANOTHER SOUTH OF 
  VALENTINE ALONG HIGHWAY 20 JUST EAST OF HIGHWAY 83 CUTOFF.  
  SEVERAL INCHES OF RAIN HAS FALLEN AT THESE LOCATIONS AND 
  FLOODING MAY BE ONGOING.  OTHER AREAS OF CONCERN IS ALONG HIGHWAY 
  12 BETWEEN VALENTINE AND SPRINGVIEW WHERE VERY HEAVY RAINFALL HAS 
  OCCURRED.

AT 3 AM CDT...THE THUNDERSTORMS COVERING NORTHEAST CHERRY AND KEYA 
PAHA COUNTIES HAVE CONTRACTED SOME BUT CONTINUE TO PRODUCE VERY 
HEAVY RAINFALL ACROSS THE WARNED AREA.  THROUGH 4 AM CDT THE 
THUNDERSTORMS SHOULD DIMINISH IN COVERAGE BUT CONTINUE STRONG IN 
SOME AREAS OF KEYA PAHA COUNTY PRODUCING FLOODING.

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. 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.

DO NOT DRIVE THROUGH FLOWING WATER. NEARLY HALF OF ALL FLOOD
FATALITIES ARE VEHICLE RELATED. AS LITTLE AS 6 INCHES OF WATER MAY
CAUSE YOU TO LOSE CONTROL OF YOUR VEHICLE. TWO FEET OF RUSHING WATER
CAN CARRY AWAY MOST VEHICLES INCLUDING SPORT UTILITY VEHICLES AND
PICKUPS.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TELEVISION AND RADIO
STATIONS FOR THE LATEST WEATHER INFORMATION.

$$

CDC
000 
WSUS73 KLBF 220837
FFSLBF
NEC031-103-220900-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
329 AM CDT SUN JUN 22 2003

..A FLASH FLOOD WARNING CONTINUES FOR KEYA PAHA AND NORTHEASTERN
CHERRY COUNTIES UNTIL 400 AM CDT(300 AM MDT)...

* AT 321 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
  INDICATE VERY HEAVY RAINFALL ALONG A LINE EXTENDING FROM 10 MILES
  SOUTHEAST OF SPARKS TO 9 MILES WEST OF SPRINGVIEW TO 7 MILES   
  EAST OF SPRINGVIEW TO 8 MILES SOUTHEAST OF MILLS.  MOVING   
  NORTHEAST AT 10 MPH. RADAR INDICATES TWO VERY IMPRESSIVE RAIN 
  CENTERS HAVE OCCRURRED NORTH OF VALENTINE ALONG HIGHWAY 83 NEAR 
  THE SOUTH DAKOTA BORDER AND ANOTHER SOUTH OF VALENTINE ALONG 
  HIGHWAY 20 JUST EAST OF HIGHWAY 83 CUTOFF.  SEVERAL INCHES OF 
  RAIN HAS FALLEN AT THESE LOCATIONS AND FLOODING MAY BE ONGOING.  
  OTHER AREAS OF CONCERN IS ALONG HIGHWAY 12 BETWEEN VALENTINE AND 
  SPRINGVIEW WHERE VERY HEAVY RAINFALL CONTINUES.

THROUGH 4 AM CDT...VERY HEAVY RAINFALL WILL CONTINUE ACROSS KEYA 
PAHA COUNTY.  CAMPERS ALONG THE NIOBRARA RIVER SHOULD MONITOR RIVER 
LEVELS AND PREPARE TO MOVE TO HIGHER GROUND IF THE RIVER BEGINS TO 
RISE QUICKLY.  AT 320 AM POLICE IN CHERRY COUNTY REPORTED NO 
FLOODING ALONG THE NIOBRARA BUT TREMENDOUS RAINFALL HAS FALLEN 
ELSEWHERE ALONG THE RIVER SO THE RIVER LEVEL IS UNCERTAIN.

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. 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.

DO NOT DRIVE THROUGH FLOWING WATER. NEARLY HALF OF ALL FLOOD
FATALITIES ARE VEHICLE RELATED. AS LITTLE AS 6 INCHES OF WATER MAY
CAUSE YOU TO LOSE CONTROL OF YOUR VEHICLE. TWO FEET OF RUSHING WATER
CAN CARRY AWAY MOST VEHICLES INCLUDING SPORT UTILITY VEHICLES AND
PICKUPS.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TELEVISION AND RADIO
STATIONS FOR THE LATEST WEATHER INFORMATION.

$$
CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 6:05 PM MDTSevere Thunderstorm WarningLBFGrant40 min
Jun 21, 6:32 PM MDTSevere Thunderstorm WarningLBFBrown, Cherry, Keya Paha58 min
Jun 21, 6:45 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan60 min
Jun 21, 7:34 PM MDTSevere Thunderstorm WarningLBFCherry, Keya Paha56 min
Jun 21, 10:19 PM MDTSevere Thunderstorm WarningLBFBrown, Rock41 min
Jun 21, 11:00 PM MDTSevere Thunderstorm WarningLBFBrown, Rock45 min
Jun 22, 12:22 AM MDTSevere Thunderstorm WarningLBFCherry38 min
Jun 22, 3:01 AM MDTFlash Flood WarningLBFCherry, Keya Paha119 min

Nearby

Flash Flood Warnings in Nebraska, 2003Every flash flood warning in 2003

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.