Alert archive / Nebraska / Flash Flood Warnings in 2016

Flash Flood Warning 5, NWS North Platte, NE

June 18, 2016Holt County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jun 18, 2016, 12:29 AM CDT for Holt County, Nebraska. It was in force for 3 hr. 3 reports 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: Jun 18, 2016, 12:29 AM CDT (05:29 UTC)
Expired: Jun 18, 2016, 3:30 AM CDT
In force: 3 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

County Holt County, NE

The radar

The North Platte radar (KLNX), 151 km from the middle of the area, began a volume at 05:30 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
Jun 18, 12:30 AM CDT	FLASH FLOOD	6 E Atkinson, NE	WATER IS RUNNING ACROSS HIGHWAY 20 ABOUT 6 MILES EAST OF ATKINSON.
Jun 18, 1:01 AM CDT	FLASH FLOOD	4 E Atkinson, NE	LAW ENFORCEMENT REPORTING WATER ACROSS 877 ROAD NEAR 481 AVE WHICH IS APPROXIMATELY 4 MILES EAST OF ATKINSON.
Jun 18, 1:30 AM CDT	FLASH FLOOD	Emmet, NE	HIGHWAY 275 WAS CLOSED FOR A FEW HOURS BECAUSE OF WATER OVER THE ROADWAY.

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, 5.5 hours before the alert went out and 209 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: 3112 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1740 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

409 
WGUS53 KLBF 180529
FFWLBF
NEC089-180830-
/O.NEW.KLBF.FF.W.0005.160618T0529Z-160618T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1229 AM CDT SAT JUN 18 2016

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL HOLT COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 330 AM CDT
    
* AT 1226 AM CDT...LOCAL LAW ENFORCEMENT REPORTED WATER ACROSS
  HIGHWAY 20 EAST OF ATKINSON. RADAR ESTIMATES OF 3 TO 4 INCHES OF
  RAIN HAS FALLEN OVER THE PAST FEW HOURS. LIGHT RAIN WILL REMAIN
  POSSIBLE THROUGH 200 AM.  

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ATKINSON AND EMMET. 

THIS INCLUDES HIGHWAY 20 BETWEEN MILE MARKERS 284 AND 299.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4264 9884 4239 9879 4239 9902 4258 9908

$$

MASEK

2 follow-up statements

667 
WGUS73 KLBF 180703
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
203 AM CDT SAT JUN 18 2016

NEC089-180830-
/O.CON.KLBF.FF.W.0005.000000T0000Z-160618T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOLT NE-
203 AM CDT SAT JUN 18 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 AM CDT FOR
WEST CENTRAL HOLT COUNTY...

AT 200 AM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING ACROSS
A COUPLE ROADS EAST OF AKTINSON. UP TO FOUR INCHES OF RAIN HAVE
ALREADY FALLEN...ALTHOUGH LITTLE ADDITIONAL RAINFALL IS ANTICIPATED
OVERNIGHT. FLASH FLOODING IS ALREADY OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ATKINSON AND EMMET. 

THIS INCLUDES HIGHWAY 20 BETWEEN MILE MARKERS 284 AND 299.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4264 9884 4239 9879 4239 9902 4258 9908

$$

MASEK

942 
WGUS73 KLBF 180829
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
329 AM CDT SAT JUN 18 2016

NEC089-180838-
/O.EXP.KLBF.FF.W.0005.000000T0000Z-160618T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOLT NE-
329 AM CDT SAT JUN 18 2016

...THE FLASH FLOOD WARNING FOR WEST CENTRAL HOLT COUNTY WILL EXPIRE
AT 330 AM CDT...

FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.

LAT...LON 4264 9884 4239 9879 4239 9902 4258 9908

$$

MASEK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:14 PM CDT	Special Weather Statement	LBF	Perkins	46 min
Jun 17, 7:21 PM CDT	Severe Thunderstorm Warning	LBF	Perkins	24 min
Jun 17, 7:48 PM CDT	Severe Thunderstorm Warning	LBF	Blaine	27 min
Jun 17, 8:36 PM CDT	Special Weather Statement	LBF	Blaine	39 min
Jun 17, 8:47 PM CDT	Special Weather Statement	LBF	Custer	43 min
Jun 17, 8:57 PM CDT	Severe Thunderstorm Warning	LBF	Logan, McPherson	33 min
Jun 17, 9:59 PM CDT	Severe Thunderstorm Warning	LBF	Garfield	31 min
Jun 17, 10:13 PM CDT	Special Weather Statement	LBF	Keya Paha	47 min
Jun 17, 10:20 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha, Rock	40 min
Jun 17, 10:32 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	28 min
Jun 17, 10:46 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Wheeler	44 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.