Alert archive / Nebraska / Flash Flood Warnings in 2016

Flash Flood Warning 4, NWS North Platte, NE

May 22, 2016Brown County, Keya Paha County, Nebraska

NWS North Platte, NE issued this flash flood warning at May 22, 2016, 8:36 PM CDT for Brown County, Keya Paha 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 22, 2016, 8:36 PM CDT (01:36 UTC)
Expired: May 23, 2016, 2:30 AM CDT
In force: 6 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

Counties Brown County, NE, Keya Paha County, NE

The radar

The North Platte radar (KLNX), 115 km from the middle of the area, began a volume at 01:37 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, 1.6 hours before the alert went out and 198 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: 2431 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1498 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 272 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 18.2

Open this sounding in Storm Lab

The text

As transmitted.

576 
WGUS53 KLBF 230136
FFWLBF
NEC017-103-230730-
/O.NEW.KLBF.FF.W.0004.160523T0136Z-160523T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
836 PM CDT SUN MAY 22 2016

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 230 AM CDT
    
* AT 833 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN ACROSS FAR WESTERN KEYA PAHA COUNTY. FLASH FLOODING
  IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SPRINGVIEW...NORDEN...BURTON...THOMAS CREEK STATE WILDLIFE MANAGEMENT
  AREA...BOBCAT STATE WILDLIFE MANAGEMENT AREA...MEADVILLE AND NORTH
  RIVER TRAIL.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA WHICH WILL LEAD TO ADDITIONAL FLASH FLOODING IN CENTRAL
KEYA PAHA COUNTY AND FAR NORTHERN BROWN COUNTY. 

THIS INCLUDES HIGHWAY 183 BETWEEN MILE MARKERS 206 AND 225.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4273 9951 4272 9963 4274 9966 4272 9968
      4269 10018 4299 10019 4300 9953

$$

BUTTLER

2 follow-up statements

047 
WGUS73 KLBF 230439
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1139 PM CDT SUN MAY 22 2016

NEC017-103-230730-
/O.CON.KLBF.FF.W.0004.000000T0000Z-160523T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KEYA PAHA NE-BROWN NE-
1139 PM CDT SUN MAY 22 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT FOR
KEYA PAHA AND NORTHERN BROWN COUNTIES...

AT 1137 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. TWO TO FOUR INCHES OF RAIN HAS
FALLEN OVER WESTERN KEYA PAHA COUNTY AND UP TO AN INCH OF ADDITIONAL
RAINFALL IS POSSIBLE IN THE WARNED AREA. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SPRINGVIEW...NORDEN...BURTON...THOMAS CREEK STATE WILDLIFE MANAGEMENT
AREA...BOBCAT STATE WILDLIFE MANAGEMENT AREA...MEADVILLE AND NORTH
RIVER TRAIL.

ADDITIONAL RAINFALL AMOUNTS OF ONE INCH ARE POSSIBLE IN THE WARNED
AREA.

THIS INCLUDES HIGHWAY 183 BETWEEN MILE MARKERS 206 AND 225.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOODING IS OCCURRING OR IS IMMINENT.  IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS.  CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4273 9951 4272 9963 4274 9966 4272 9968
      4269 10018 4299 10019 4300 9953

$$

BUTTLER

986 
WGUS73 KLBF 230732
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
232 AM CDT MON MAY 23 2016

NEC017-103-230741-
/O.EXP.KLBF.FF.W.0004.000000T0000Z-160523T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KEYA PAHA NE-BROWN NE-
232 AM CDT MON MAY 23 2016

...THE FLASH FLOOD WARNING FOR KEYA PAHA AND NORTHERN BROWN COUNTIES
HAS EXPIRED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO
POSE A THREAT.

LAT...LON 4273 9951 4272 9963 4274 9966 4272 9968
      4269 10018 4299 10019 4300 9953

$$

MASEK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:04 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	41 min
May 22, 7:19 PM CDT	Special Weather Statement	LBF	Thomas	26 min
May 22, 7:30 PM CDT	Special Weather Statement	LBF	Logan	30 min
May 22, 7:36 PM CDT	Flash Flood Warning	LBF	Cherry	6 hr
May 22, 7:37 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	53 min
May 22, 7:42 PM CDT	Special Weather Statement	LBF	Logan	33 min
May 22, 7:47 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	27 min
May 22, 8:02 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	43 min
May 22, 8:30 PM CDT	Special Weather Statement	LBF	Sheridan	45 min
May 22, 8:47 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	43 min
May 22, 8:53 PM CDT	Special Weather Statement	LBF	Sheridan	37 min
May 22, 9:24 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Grant, Hooker	51 min
May 22, 9:44 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Grant, Hooker, Keith, McPherson	46 min
May 22, 10:15 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Keya Paha	24 min
May 22, 10:26 PM CDT	Special Weather Statement	LBF	McPherson, Perkins	64 min
May 22, 11:06 PM CDT	Special Weather Statement	LBF	Blaine, Logan	39 min
May 23, 12:03 AM CDT	Special Weather Statement	LBF	Garfield, Loup, Rock	42 min

Nearby

Flash Flood Warnings in Nebraska, 2016 Every flash flood warning in 2016

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.