Alert archive / Nebraska / Flash Flood Warnings in 2007
Flash Flood Warning 31, NWS North Platte, NE
NWS North Platte, NE issued this flash flood warning at Jun 12, 2007, 1:23 AM MDT for Perkins County, Nebraska. It took effect at Jun 12, 2007, 1:28 AM MDT. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 12, 2007, 1:23 AM MDT (07:23 UTC)
- In effect from
- Jun 12, 2007, 1:28 AM MDT
- Expired
- Jun 12, 2007, 5:30 AM MDT
- In force
- 4 hr
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Perkins County, NE
The radar
The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 07:26 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, 7.4 hours before the alert went out and 93 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.
- Mixed-layer CAPE
- 2552 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 1479 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KLBF 120728 FFWLBF NEC135-121130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 123 AM MDT TUE JUN 12 2007 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * FLASH FLOOD WARNING FOR... PERKINS COUNTY IN SOUTHWEST NEBRASKA... THIS INCLUDES THE CITY OF GRANT... * UNTIL 530 AM MDT * AT 117 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. SCATTERED THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS AREAS FLOODED EARLIER TONIGHT. LESS THAN AN INCH OF RAIN IN AN HOUR WILL PRODUCE FLOODING. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VENANGO...BRANDON...GRAINTON. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES IS POSSIBLE IN THE WARNED AREA. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. UNPAVED ROADS AND SOME SECONDARY ROADS MAY BE STRUCTURALLY UNSAFE FOR TRAVEL. TRAVEL IS NOT ADVISED ACROSS SOUTHWEST PERKINS COUNTY WHERE UPWARDS TO 4 TO 6 INCHES OF RAIN HAS FALLEN. ALSO 2 TO 3 INCHES OF RAIN MAY HAVE FALLEN ACROSS FAR SOUTHEAST PERKINS COUNTY SOUTH OF GRAINTON. 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. 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. IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN NORTH PLATTE. LAT...LON 4071 10203 4070 10125 4099 10126 4099 10204 $$ CDC
3 follow-up statements
000 WGUS73 KLBF 120850 FFSLBF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 343 AM CDT TUE JUN 12 2007 NEC135-121130- PERKINS NE- 243 AM MDT TUE JUN 12 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM MDT FOR PERKINS COUNTY... AT 239 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE SCATTERED TO NUMEROUS THUNDERSTORMS PRODUCING HEAVY RAINFALL ACROSS PARTS OF WESTERN PERKINS COUNTY. STRONGEST STORMS WILL BE CAPABLE OF RAINFALL RATES NEAR 1 INCH PER HOUR. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRANT...BRANDON AND VENANGO. THROUGH 530 AM MDT...ADDITIONAL RAINFALL OF 1 TO 3 INCHES IS LIKELY IN THE WARNED AREA AS STORMS CONTINUE TO TRACK ACROSS AREAS ALREADY WET OR FLOODED FROM HEAVY RAIN EARLIER TONIGHT. TRAVEL IS DISCOURAGED ON ANY COUNTY OR SECONDARY ROADS FOR THE REMAINDER OF TONIGHT...AS ROADS MAY BE UNDERWATER OR IMPASSABLE DUE TO WASHOUTS OR STRUCTURAL PROBLEMS. FLOOD WATERS ARE LIKELY MOVING DOWN SPRING CREEK AND SAND CREEK SOUTH OF BRANDON AND EAST OF VENANGO. THE DEPTH OF THESE WATERS IS UNCERTAIN BUT RADAR ESTIMATES OVER 6 INCHES OF RAINFALL HAS FALLEN IN THIS AREA. THIS WILL LIKELY PRODUCE EXTENSIVE LOWLAND FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. LAT...LON 4071 10203 4070 10125 4099 10126 4099 10204 $$ CDC
000 WGUS73 KLBF 121033 FFSLBF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 529 AM CDT TUE JUN 12 2007 NEC135-121130- PERKINS NE- 429 AM MDT TUE JUN 12 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM MDT FOR PERKINS COUNTY... AT 423 AM MDT...ALL INDICATIONS ARE THE HEAVY RAIN HAS ENDED AND NO SIGNIFICANT RAINFALL IS EXPECTED FOR SEVERAL HOURS THIS MORNING. ANOTHER POWERFUL UPPER LEVEL DISTURBANCE WILL BE APPROACHING SOUTHWEST NEBRASKA LATER THIS MORNING OR THIS AFTERNOON AND MORE HEAVY RAINFALL COULD DEVELOP. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WILD HORSE SPRING...VENANGO...BRANDON...GRANT AND MADRID WHERE 6 INCHES OF RAIN MAY HAVE FALLEN. ADDITIONAL RAINFALL AMOUNTS OF 1/4 INCH OR LESS IS POSSIBLE EARLY THIS MORNING IN THE WARNED AREA. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. FLOOD WATERS ARE LIKELY MOVING DOWN SPRING CREEK AND SAND CREEK SOUTH OF BRANDON AND EAST OF VENANGO. THE DEPTH OF THESE WATERS IS UNCERTAIN BUT RADAR ESTIMATES OVER 6 INCHES OF RAINFALL HAS FALLEN IN THIS AREA. THIS WILL LIKELY PRODUCE EXTENSIVE LOWLAND FLOODING. 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. TRAVEL COULD BE HAZARDOUS ON COUNTY OR SECONDARY ROADS THIS MORNING. AS ROADS MAY BE UNDERWATER OR IMPASSABLE DUE TO WASHOUTS OR STRUCTURAL PROBLEMS. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN NORTH PLATTE. LAT...LON 4071 10203 4070 10125 4099 10126 4099 10204 $$ CDC
000 WGUS73 KLBF 121134 FFSLBF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 632 AM CDT TUE JUN 12 2007 NEC135-121142- PERKINS NE- 532 AM MDT TUE JUN 12 2007 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR PERKINS COUNTY... THE THREAT OF HEAVY RAIN AND FLOODING HAS ENDED FOR NOW. HEAVY RAIN COULD REDEVELOP LATER TODAY. USE CAUTION TRAVELING THIS MORNING. THE STRUCTURAL INTEGRITY OF SOME ROADS EXPOSED TO RUSHING FLOOD WATERS LAST NIGHT MAY BE COMPROMISED. THIS MEANS SLOW DOWN UNLESS YOUR CERTAIN THE ROAD IS SAFE. LAT...LON 4071 10203 4070 10125 4099 10126 4099 10204 $$ CDC
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:28 PM MDT | Severe Thunderstorm Warning | LBF | Chase | 62 min |
| Jun 11, 7:01 PM MDT | Flash Flood Warning | LBF | Chase | 119 min |
| Jun 11, 7:11 PM MDT | Flash Flood Warning | LBF | Chase, Hayes | 6 hr |
| Jun 11, 8:34 PM MDT | Severe Thunderstorm Warning | LBF | Perkins | 41 min |
| Jun 11, 9:31 PM MDT | Flash Flood Warning | LBF | Perkins | 4 hr |
| Jun 12, 12:00 AM MDT | Severe Thunderstorm Warning | LBF | Chase | 60 min |
| Jun 12, 12:17 AM MDT | Tornado Warning | LBF | Chase | 43 min |
| Jun 12, 1:10 AM MDT | Flash Flood Warning | LBF | Chase | 6 hr |
| Jun 12, 2:39 AM MDT | Flash Flood Watch | LBF | Arthur, Blaine, Boyd, Brown, Chase, Cherry and 20 more | 48 hr |
| Jun 12, 6:54 AM MDT | Flash Flood Warning | LBF | Chase | 4 hr |
| Jun 12, 11:19 AM MDT | Flash Flood Warning | LBF | Chase, Perkins | 6 hr |
| Jun 12, 11:41 AM MDT | Severe Thunderstorm Warning | LBF | Cherry | 34 min |
| Jun 12, 12:23 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 40 min |
| Jun 12, 1:28 PM MDT | Flash Flood Warning | LBF | Keith | 6 hr |
| Jun 12, 1:46 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 30 min |
| Jun 12, 2:43 PM MDT | Flash Flood Warning | LBF | Hayes | 6 hr |
| Jun 12, 3:22 PM MDT | Flash Flood Warning | LBF | Lincoln | 6 hr |
| Jun 12, 3:29 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 61 min |
Nearby
Flash Flood Warnings in Nebraska, 2007Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.