Alert archive / Nebraska / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS North Platte, NE

May 9, 2016Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this flash flood warning at May 9, 2016, 6:10 PM CDT for Boyd County, Holt County, Nebraska. It was in force for 6 hr. 2 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
May 9, 2016, 6:10 PM CDT (23:10 UTC)
Expired
May 10, 2016, 12:15 AM CDT
In force
6 hr
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Flood severity
None

Counties Boyd County, NE, Holt County, NE

The radar

The Sioux Falls radar (KFSD), 168 km from the middle of the area, began a volume at 23:14 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

TimeReportWhereRemark
May 9, 8:30 PM CDTFLASH FLOOD7 Ese Spencer, NELAW ENFORCEMENT REPORTING WATER FLOWING OVER SEVERAL COUNTY ROADS SOUTHEAST OF SPENCER.
May 9, 9:35 PM CDTFLASH FLOODBristow, NE2-3 FOOT WASHOUT SECTIONS ALONG GRAVEL ROADS NEAR BRISTOW, SOME ROADS COMPLETELY WATER COVERED

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.2 hours before the alert went out and 224 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, Aberdeen, SD at 12:00Z on 2016-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2016-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1087 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

259 
WGUS53 KLBF 092310
FFWLBF
NEC015-089-100515-
/O.NEW.KLBF.FF.W.0001.160509T2310Z-160510T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
610 PM CDT MON MAY 9 2016

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...
  EASTERN BOYD COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 1215 AM CDT TUESDAY
    
* AT 607 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. AROUND TWO INCHES OF RAIN HAS
  FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SPENCER...BUTTE...LYNCH...GROSS...BRISTOW...ANOKA...SPENCER DAM...ANNCAR
  AND REDBIRD STATE WILDLIFE MANAGEMENT AREA. 

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.

THIS INCLUDES HIGHWAY 281 BETWEEN MILE MARKERS 201 AND 223.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 4294 9846 4292 9842 4271 9840 4270 9882
      4300 9886 4300 9850

$$

BUTTLER
1 follow-up statement
204 
WGUS73 KLBF 100142
FFSLBF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
842 PM CDT MON MAY 9 2016

NEC015-089-100515-
/O.CON.KLBF.FF.W.0001.000000T0000Z-160510T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOLT NE-BOYD NE-
842 PM CDT MON MAY 9 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
TUESDAY FOR NORTHEASTERN HOLT AND EASTERN BOYD COUNTIES...

AT 838 PM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING IN
ACROSS THE WARNED AREA. MANY COUNTY ROADS HAVE WATER FLOWING OVER
THEM. FOUR TO FIVE INCHES OF RAIN HAS FALLEN...AND AN ADDITIONAL ONE
TO THREE INCHES OF RAIN IS POSSIBLE. FLASH FLOODING IS ALREADY
OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SPENCER...BUTTE...LYNCH...GROSS...BRISTOW...ANOKA...SPENCER DAM...ANNCAR AND
REDBIRD STATE WILDLIFE MANAGEMENT AREA.

THIS INCLUDES HIGHWAY 281 BETWEEN MILE MARKERS 201 AND 223.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4294 9846 4292 9842 4271 9840 4270 9882
      4300 9886 4300 9850

$$

TAYLOR

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 7:06 PM CDTSpecial Weather StatementLBFFrontier39 min
May 8, 7:20 PM CDTSpecial Weather StatementLBFHolt40 min
May 8, 7:29 PM CDTTornado WarningLBFFrontier46 min
May 8, 7:30 PM CDTSevere Thunderstorm WarningLBFHolt, Rock30 min
May 8, 7:36 PM CDTSevere Thunderstorm WarningLBFLoup, Rock39 min
May 8, 7:59 PM CDTSevere Thunderstorm WarningLBFHolt31 min
May 8, 8:05 PM CDTSevere Thunderstorm WarningLBFGarfield25 min
May 8, 8:08 PM CDTSevere Thunderstorm WarningLBFCuster, Lincoln38 min
May 8, 8:26 PM CDTSevere Thunderstorm WarningLBFCuster34 min
May 8, 8:30 PM CDTSevere Thunderstorm WarningLBFHolt30 min
May 8, 8:59 PM CDTSevere Thunderstorm WarningLBFHolt31 min
May 9, 12:19 AM CDTRiver Flood WarningLBFGarden27 days
May 9, 4:57 PM CDTSpecial Weather StatementLBFBoyd48 min
May 9, 5:30 PM CDTSpecial Weather StatementLBFBoyd45 min
May 9, 6:02 PM CDTSpecial Weather StatementLBFHooker43 min
May 9, 6:45 PM CDTSpecial Weather StatementLBFLogan45 min
May 9, 6:51 PM CDTSevere Thunderstorm WarningLBFLogan, McPherson39 min

Nearby

Flash Flood Warnings in Nebraska, 2016Every 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.