Alert archive / Nebraska / Flash Flood Warnings in 2021

Flash Flood Warning 5, NWS North Platte, NE

May 26, 2021Lincoln County, Nebraska

NWS North Platte, NE issued this flash flood warning at May 26, 2021, 8:56 PM CDT for Lincoln County, Nebraska. It was in force for 62 min. 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 26, 2021, 8:56 PM CDT (01:56 UTC)
Expired
May 26, 2021, 9:58 PM CDT
In force
62 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Flood severity
None

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 83 km from the middle of the area, began a volume at 01:55 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, 1.9 hours before the alert went out and 25 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, N. Platte/Lee Bi, NE at 00:00Z on 2021-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 124 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2021-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 square meters per square second.19395878Sfc1 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
124 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1622 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
363 m²/s²
Significant tornado parameter
0.1
Supercell composite
9.7

Open this sounding in Storm Lab

The text

As transmitted.

988 
WGUS53 KLBF 270156
FFWLBF
NEC111-270800-
/O.NEW.KLBF.FF.W.0005.210527T0156Z-210527T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service North Platte NE
856 PM CDT Wed May 26 2021

The National Weather Service in North Platte has issued a

* Flash Flood Warning for...
  Northern Lincoln County in southwestern Nebraska...

* Until 300 AM CDT Thursday.

* At 856 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets and underpasses as well as other
           drainage and low lying areas.

* Some locations that will experience flash flooding include...
  North Platte, Sutherland, Hershey, Brady, Maxwell, North Platte 
  Airport, Lake Maloney State Recreation Area, Sutherland Reservoir 
  State Recreation Area, Keith, Birdwood, Cottonwood Canyon State 
  Wildlife Management Area, O'Fallons, Coker and Jeffrey Canyon 
  State Wildlife Management Area.

This includes the following highways...
	Highway 83 between mile markers 72 and 104.
	Highway 97 between mile markers 1 and 15.
	Interstate 80 in Nebraska between mile markers 152 and 206.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4138 10105 4138 10026 4092 10025 4102 10124
      4138 10126

FLASH FLOOD...RADAR INDICATED

$$

CDC
1 follow-up statement
265 
WGUS73 KLBF 270258
FFSLBF

Flash Flood Statement
National Weather Service North Platte NE
958 PM CDT Wed May 26 2021

NEC111-270308-
/O.CAN.KLBF.FF.W.0005.000000T0000Z-210527T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lincoln NE-
958 PM CDT Wed May 26 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHERN LINCOLN COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4138 10105 4138 10026 4092 10025 4102 10124
      4138 10126

$$

CDC

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 7:00 PM CDTSpecial Weather StatementLBFGarden30 min
May 26, 7:12 PM CDTSpecial Weather StatementLBFDeuel33 min
May 26, 7:15 PM CDTSpecial Weather StatementLBFSheridan30 min
May 26, 7:20 PM CDTSpecial Weather StatementLBFGarden25 min
May 26, 7:23 PM CDTSpecial Weather StatementLBFHayes37 min
May 26, 7:40 PM CDTSpecial Weather StatementLBFSheridan35 min
May 26, 7:43 PM CDTSevere Thunderstorm WarningLBFCherry, Sheridan47 min
May 26, 7:46 PM CDTSpecial Weather StatementLBFHayes44 min
May 26, 7:47 PM CDTFlash Flood WarningLBFFrontier, Hayes10 hr
May 26, 7:57 PM CDTSpecial Weather StatementLBFKeith48 min
May 26, 8:03 PM CDTSevere Thunderstorm WarningLBFFrontier, Hayes42 min
May 26, 8:04 PM CDTSevere Thunderstorm WarningLBFChase, Hayes41 min
May 26, 8:05 PM CDTSevere Thunderstorm WarningLBFKeith, Perkins40 min
May 26, 8:28 PM CDTSevere Thunderstorm WarningLBFChase, Perkins32 min
May 26, 8:39 PM CDTSevere Thunderstorm WarningLBFArthur, Keith, Lincoln, McPherson36 min
May 26, 8:42 PM CDTSpecial Weather StatementLBFFrontier33 min
May 26, 8:44 PM CDTSevere Thunderstorm WarningLBFKeith, Lincoln, Perkins46 min
May 26, 8:55 PM CDTSpecial Weather StatementLBFChase, Hayes65 min
May 26, 9:17 PM CDTSevere Thunderstorm WarningLBFHooker, Logan, McPherson, Thomas43 min
May 26, 9:18 PM CDTSpecial Weather StatementLBFFrontier27 min
May 26, 9:26 PM CDTSpecial Weather StatementLBFFrontier49 min
May 26, 9:30 PM CDTSpecial Weather StatementLBFLincoln45 min
May 26, 10:04 PM CDTSpecial Weather StatementLBFFrontier56 min
May 26, 11:41 PM CDTRiver Flood AdvisoryLBFHayes87 min
May 27, 1:08 AM CDTRiver Flood WarningLBFHayes10 hr

Nearby

Flash Flood Warnings in Nebraska, 2021Every flash flood warning in 2021

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.