Alert archive / Nebraska / Flash Flood Warnings in 2016

Flash Flood Warning 6, NWS North Platte, NE

July 22, 2016Garden County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jul 22, 2016, 6:55 PM MDT for Garden County, Nebraska. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 22, 2016, 6:55 PM MDT (00:55 UTC)
Expired: Jul 22, 2016, 10:00 PM MDT
In force: 3 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

County Garden County, NE

The radar

The North Platte radar (KLNX), 169 km from the middle of the area, began a volume at 00:59 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.

What was reported inside it

Time	Report	Where	Remark
Jul 22, 8:00 PM MDT	FLASH FLOOD	Oshkosh, NE	WESTERN GARDEN COUNTY HAD SOME ROAD DAMAGE TO COUNTY ROADS DUE TO HIGH WATERS. AT THIS TIME NO ROADS ARE CLOSED BUT THE NEDOR IS STILL INSPECTING ROADS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.9 hours before the alert went out and 170 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: 5536 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1380 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

As transmitted.

988 
WGUS53 KLBF 230055
FFWLBF
NEC069-230400-
/O.NEW.KLBF.FF.W.0006.160723T0055Z-160723T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
655 PM MDT FRI JUL 22 2016

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN GARDEN COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 1000 PM MDT
    
* AT 654 PM MDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO
  TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED
  TO BEGIN SHORTLY. ADDITIONAL RAINFALL OF 1 TO 2 INCHES IS EXPECTED.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  OSHKOSH...CRESCENT LAKE NWR...LISCO...TRALNOR LAKE...
  INTERSECTION OF HIGHWAY 27 AND 9 MILE ROAD...RICHARDSON LAKE...
  DOGTOWN FLATS...MUMPER AND SUGAR LOAF HILL.

LAT...LON 4191 10235 4126 10226 4123 10260 4137 10262
      4139 10261 4140 10262 4154 10264 4174 10264
      4175 10267 4186 10268

$$

CDC

2 follow-up statements

993 
WGUS73 KLBF 230246
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
846 PM MDT FRI JUL 22 2016

NEC069-230400-
/O.CON.KLBF.FF.W.0006.000000T0000Z-160723T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARDEN NE-
846 PM MDT FRI JUL 22 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM MDT FOR
WESTERN GARDEN COUNTY...

AT 844 PM MDT...TRAINED WEATHER SPOTTERS REPORTED THUNDERSTORMS
PRODUCING HEAVY RAIN 10 MILES NORTHEAST OF OSHKOSH AND 2 INCHES OF
RAIN HAVE FALLEN. 2 TO 4 INCHES OF RAIN HAS FALLEN ELSEWHERE.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OSHKOSH...CRESCENT LAKE NWR...LISCO...TRALNOR LAKE...INTERSECTION OF
HIGHWAY 27 AND 9 MILE ROAD...RICHARDSON LAKE...DOGTOWN FLATS...MUMPER
AND SUGAR LOAF HILL.

ADDITIONAL RAINFALL AMOUNTS OF 1 INCH ARE POSSIBLE IN THE WARNED
AREA.

LAT...LON 4191 10235 4126 10226 4123 10260 4137 10262
      4139 10261 4140 10262 4154 10264 4174 10264
      4175 10267 4186 10268

$$

CDC

078 
WGUS73 KLBF 230357
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
957 PM MDT FRI JUL 22 2016

NEC069-230405-
/O.EXP.KLBF.FF.W.0006.000000T0000Z-160723T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARDEN NE-
957 PM MDT FRI JUL 22 2016

...THE FLASH FLOOD WARNING FOR WESTERN GARDEN COUNTY WILL EXPIRE AT
1000 PM MDT...

THE HEAVY RAIN HAS ENDED...AND ADDITIONAL FLOODING IS NO LONGER
EXPECTED. USE CAUTION TRAVELING TONIGHT. SOME ROADS...ESPECIALLY
UNIMPROVED ROADS MAY BE DAMAGED...COVERED WITH DEBRIS OR
COVERED BY STANDING WATER IN SPOTS.

LAT...LON 4191 10235 4126 10226 4123 10260 4137 10262
      4139 10261 4140 10262 4154 10264 4174 10264
      4175 10267 4186 10268

$$

CDC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 6:08 PM MDT	Special Weather Statement	LBF	Garden	52 min
Jul 22, 6:32 PM MDT	Special Weather Statement	LBF	Garden	43 min
Jul 22, 7:11 PM MDT	Special Weather Statement	LBF	Keith	49 min
Jul 22, 7:15 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	45 min
Jul 22, 7:23 PM MDT	Severe Thunderstorm Warning	LBF	Keith	37 min
Jul 22, 7:45 PM MDT	Tornado Warning	LBF	Arthur	45 min
Jul 22, 8:10 PM MDT	Special Weather Statement	LBF	Keith	50 min
Jul 22, 8:18 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith	42 min
Jul 22, 8:20 PM MDT	Tornado Warning	LBF	Arthur, Keith	25 min
Jul 22, 8:54 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, McPherson	39 min
Jul 22, 9:19 PM MDT	Special Weather Statement	LBF	Arthur, Chase, Deuel, Keith, McPherson, Perkins	56 min
Jul 22, 9:43 PM MDT	Severe Thunderstorm Warning	LBF	Hooker, Logan, McPherson, Thomas	47 min
Jul 22, 10:10 PM MDT	Special Weather Statement	LBF	Arthur, Chase, Hayes, Keith, Lincoln, Logan and 3 more	65 min
Jul 22, 10:26 PM MDT	Severe Thunderstorm Warning	LBF	Blaine, Logan, Thomas	49 min
Jul 22, 11:11 PM MDT	Special Weather Statement	LBF	Chase, Custer, Frontier, Hayes, Lincoln, Logan and 1 more	64 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.