Alert archive / Nebraska / Flash Flood Warnings in 2008

Flash Flood Warning 3, NWS North Platte, NE

May 23, 2008Frontier County, Hayes County, Nebraska

NWS North Platte, NE issued this flash flood warning at May 23, 2008, 5:02 PM CDT for Frontier County, Hayes 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: May 23, 2008, 5:02 PM CDT (22:02 UTC)
Expired: May 23, 2008, 11:00 PM 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

The radar

The Grand Island radar (KUEX), 160 km from the middle of the area, began a volume at 22:01 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 12:00Z, 10.0 hours before the alert went out and 77 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 143 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 292 m²/s²
0-3 km storm-relative helicity: 253 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLBF 232204
FFWLBF
NEC063-085-240400-
/O.NEW.KLBF.FF.W.0003.080523T2202Z-080524T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
502 PM CDT FRI MAY 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...
  EXTREME EASTERN HAYES COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 1100 PM CDT

* AT 459 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS MOVING NORTH OUT OF KANSAS...CAPABLE OF PRODUCING 
FLOODING RAINFALL. FURTHERMORE...STORM SPOTTERS REPORTED WATER OVER 
COUNTY ROADS WEST OF MEDICINE CREEK.

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.

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.

LAT...LON 4034 10078 4070 10079 4070 9998 4069 9997
      4044 9997 4043 10007 4036 10007 4034 10009
      4033 10075
TIME...MOT...LOC 2202Z 214DEG 4KT 4088 9996

$$

GARNER

1 follow-up statement

000 
WGUS73 KLBF 240104
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
804 PM CDT FRI MAY 23 2008

NEC063-085-240400-
/O.CON.KLBF.FF.W.0003.000000T0000Z-080524T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAYES NE-FRONTIER NE-
804 PM CDT FRI MAY 23 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
FRONTIER AND EXTREME EASTERN HAYES COUNTIES...

AT 759 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING.  THIS STORM WAS
LOCATED NEAR STOCKVILLE...OR 15 MILES SOUTHEAST OF CURTIS...MOVING
NORTH AT 12 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MAYWOOD...EUSTIS AND MOOREFIELD

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.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING
FOR SOUTHWEST NEBRASKA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
100 AM CDT SATURDAY MORNING FOR THE PANHANDLE AND SOUTHWESTERN
NEBRASKA.

LAT...LON 4034 10078 4070 10079 4070 9998 4069 9997
      4044 9997 4043 10007 4036 10007 4034 10009
      4033 10075
TIME...MOT...LOC 0104Z 180DEG 10KT 4053 10028

$$

GARNER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 8:06 PM CDT	Tornado Warning	LBF	Frontier	39 min
May 23, 3:55 AM CDT	Flash Flood Watch	LBF	Chase, Custer, Frontier, Hayes, Keith, Lincoln and 1 more	24 hr
May 23, 8:07 AM CDT	Flash Flood Warning	LBF	Frontier, Hayes, Lincoln	9 hr
May 23, 2:00 PM CDT	Flash Flood Warning	LBF	Lincoln	6 hr
May 23, 2:26 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	49 min
May 23, 3:13 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	47 min
May 23, 3:18 PM CDT	Tornado Warning	LBF	Frontier	27 min
May 23, 4:03 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	42 min
May 23, 4:15 PM CDT	Wind Advisory	LBF	Arthur, Chase, Cherry, Deuel, Frontier, Garden and 10 more	10 hr
May 23, 4:31 PM CDT	Severe Thunderstorm Warning	LBF	Custer	29 min
May 23, 4:44 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	46 min

Nearby

Flash Flood Warnings in Nebraska, 2008 Every 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.