Alert archive / Nebraska / Flash Flood Warnings in 2010

Flash Flood Warning 2, NWS North Platte, NE

June 11, 2010McPherson County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jun 11, 2010, 12:02 AM CDT for McPherson County, Nebraska. It was in force for 5 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 11, 2010, 12:02 AM CDT (05:02 UTC)
Expired
Jun 11, 2010, 4:32 AM CDT
In force
5 hr
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Flood severity
None

County McPherson County, NE

The radar

The North Platte radar (KLNX), 59 km from the middle of the area, began a volume at 05:04 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, 5.0 hours before the alert went out and 61 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 2010-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3897 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 2010-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.19395878Sfc1 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
3897 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
800 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
3.1
Supercell composite
14.5

Open this sounding in Storm Lab

The text

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

759 
WGUS53 KLBF 110502
FFWLBF
NEC117-111100-
/O.NEW.KLBF.FF.W.0002.100611T0502Z-100611T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1202 AM CDT FRI JUN 11 2010

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MCPHERSON COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 600 AM CDT

* AT 1201 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TRYON...DIAMOND BAR LAKE...RINGGOLD...SAND BEACH LAKE AND          
  SCHNICK LAKE.

LAT...LON 4173 10071 4139 10071 4139 10136 4140 10140
      4174 10140

$$

TAYLOR
2 follow-up statements
972 
WGUS73 KLBF 110732
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
232 AM CDT FRI JUN 11 2010

NEC117-111100-
/O.CON.KLBF.FF.W.0002.000000T0000Z-100611T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCPHERSON NE-
232 AM CDT FRI JUN 11 2010

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MCPHERSON COUNTY UNTIL
600 AM CDT...

AT 232 AM CDT...THE HEAVY RAINFALL HAD ENDED OVER THE AREA. 
HOWEVER...ADDITIONAL RUNOFF FROM THE RAIN THAT DID OCCUR IS LIKELY 
TO CONTINUE FOR 3 TO 4 HOURS AND FLOODING IS STILL POSSIBLE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...TRYON...
DIAMOND BAR LAKE...RINGGOLD...SAND BEACH LAKE AND SCHNICK LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4173 10071 4139 10071 4139 10136 4140 10140
      4174 10140

$$

SPRINGER
434 
WGUS73 KLBF 110932
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
432 AM CDT FRI JUN 11 2010

NEC117-110947-
/O.CAN.KLBF.FF.W.0002.000000T0000Z-100611T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCPHERSON NE-
432 AM CDT FRI JUN 11 2010

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR MCPHERSON COUNTY IS
CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

THIS WARNING HAS BEEN REPLACED BY A FLOOD ADVISORY IN EFFECT UNTIL 
830 AM CDT...730 AM MDT.

LAT...LON 4173 10071 4139 10071 4139 10136 4140 10140
      4174 10140

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 8:14 PM CDTSevere Thunderstorm WarningLBFSheridan27 min
Jun 10, 8:23 PM CDTSevere Thunderstorm WarningLBFGarden, Sheridan54 min
Jun 10, 9:21 PM CDTSevere Thunderstorm WarningLBFArthur, McPherson39 min
Jun 10, 9:45 PM CDTSevere Thunderstorm WarningLBFHooker, McPherson45 min
Jun 10, 9:53 PM CDTSevere Thunderstorm WarningLBFKeith, Lincoln52 min
Jun 10, 9:56 PM CDTSevere Thunderstorm WarningLBFArthur, McPherson49 min
Jun 10, 10:00 PM CDTSevere Thunderstorm WarningLBFLincoln45 min
Jun 10, 10:13 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Cherry, Thomas47 min
Jun 10, 10:36 PM CDTTornado WarningLBFLincoln24 min
Jun 10, 10:39 PM CDTSevere Thunderstorm WarningLBFLogan, McPherson51 min
Jun 10, 10:52 PM CDTSevere Thunderstorm WarningLBFHayes, Lincoln38 min
Jun 10, 10:53 PM CDTAreal Flood AdvisoryLBFHayes, Lincoln3 hr
Jun 10, 10:57 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown, Rock, Thomas48 min
Jun 10, 10:59 PM CDTSevere Thunderstorm WarningLBFLogan, McPherson46 min
Jun 10, 11:07 PM CDTSevere Thunderstorm WarningLBFCuster38 min
Jun 10, 11:12 PM CDTAreal Flood AdvisoryLBFLincoln, Logan, McPherson5 hr
Jun 10, 11:18 PM CDTSevere Thunderstorm WarningLBFKeith42 min
Jun 10, 11:24 PM CDTAreal Flood AdvisoryLBFBlaine, Brown, Cherry, Thomas5 hr
Jun 10, 11:24 PM CDTSevere Thunderstorm WarningLBFBlaine, Loup, Rock51 min
Jun 10, 11:33 PM CDTSevere Thunderstorm WarningLBFHolt, Keya Paha, Rock42 min
Jun 10, 11:38 PM CDTSevere Thunderstorm WarningLBFKeith, Lincoln37 min
Jun 10, 11:47 PM CDTSevere Thunderstorm WarningLBFCuster, Loup43 min
Jun 10, 11:52 PM CDTFlash Flood WarningLBFBrown5 hr
Jun 11, 12:07 AM CDTSevere Thunderstorm WarningLBFGarfield, Holt, Loup, Rock38 min
Jun 11, 12:20 AM CDTFlash Flood WarningLBFLincoln4 hr
Jun 11, 12:40 AM CDTSevere Thunderstorm WarningLBFHolt50 min
Jun 11, 1:31 AM CDTAreal Flood AdvisoryLBFBrown, Holt, Rock7 hr
Jun 11, 3:19 AM CDTFlood WatchLBFArthur, Chase, Cherry, Custer, Deuel, Frontier and 11 more4 days
Jun 11, 4:09 AM CDTAreal Flood AdvisoryLBFBlaine, Brown, Custer, Hooker, Keith, Lincoln and 3 more4 hr
Jun 11, 10:03 AM CDTAreal Flood AdvisoryLBFBlaine, Brown, Cherry, Holt, Logan, Rock and 1 more8 hr

Nearby

Flash Flood Warnings in Nebraska, 2010Every flash flood warning in 2010

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.