Alert archive / Nebraska / Flash Flood Warnings in 2024

Flash Flood Warning 2, NWS North Platte, NE

May 21, 2024Hayes County, Nebraska

NWS North Platte, NE issued this flash flood warning at May 21, 2024, 1:53 AM CDT for Hayes County, Nebraska. It was in force for 3 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 21, 2024, 1:53 AM CDT (06:53 UTC)
Expired: May 21, 2024, 5:00 AM CDT
In force: 3 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

County Hayes County, NE

The radar

The Goodland radar (KGLD), 131 km from the middle of the area, began a volume at 06:54 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, 6.9 hours before the alert went out and 87 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: 248 J/kg
Mixed-layer CIN: -191 J/kg
Mixed-layer LCL: 1142 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 296 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

As transmitted.

253 
WGUS53 KLBF 210653
FFWLBF
NEC085-211000-
/O.NEW.KLBF.FF.W.0002.240521T0653Z-240521T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service North Platte NE
153 AM CDT Tue May 21 2024

The National Weather Service in North Platte has issued a

* Flash Flood Warning for...
  Southeastern Hayes County in southwestern Nebraska...

* Until 500 AM CDT.

* At 153 AM 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...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Hayes Center.

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 4035 10078 4035 10080 4035 10081 4035 10082
      4035 10085 4035 10087 4035 10091 4035 10095
      4035 10096 4035 10098 4035 10107 4046 10114
      4053 10105 4048 10079

FLASH FLOOD...RADAR INDICATED

$$

Snively

1 follow-up statement

952 
WGUS73 KLBF 210950
FFSLBF

Flash Flood Statement
National Weather Service North Platte NE
450 AM CDT Tue May 21 2024

NEC085-211000-
/O.EXP.KLBF.FF.W.0002.000000T0000Z-240521T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hayes NE-
450 AM CDT Tue May 21 2024

...FLASH FLOOD WARNING WILL EXPIRE AT 5 AM CDT EARLY THIS MORNING 
FOR SOUTHEASTERN HAYES COUNTY...

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

A Flood Watch remains in effect until 1000 AM CDT for portions of 
central and southwest Nebraska.

&&

LAT...LON 4035 10078 4035 10080 4035 10081 4035 10082
      4035 10085 4035 10087 4035 10091 4035 10095
      4035 10096 4035 10098 4035 10107 4046 10114
      4053 10105 4048 10079

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 8:23 PM CDT	Special Weather Statement	LBF	Boyd	22 min
May 20, 9:17 PM CDT	Special Weather Statement	LBF	Deuel	43 min
May 20, 9:54 PM CDT	Special Weather Statement	LBF	Loup	36 min
May 20, 9:57 PM CDT	Special Weather Statement	LBF	Blaine	33 min
May 20, 10:28 PM CDT	Special Weather Statement	LBF	Loup	32 min
May 20, 10:29 PM CDT	Special Weather Statement	LBF	Custer	31 min
May 20, 10:34 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Loup	41 min
May 20, 10:43 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Loup	47 min
May 20, 10:46 PM CDT	Special Weather Statement	LBF	Rock	44 min
May 20, 10:53 PM CDT	Special Weather Statement	LBF	Lincoln	37 min
May 20, 11:03 PM CDT	Severe Thunderstorm Warning	LBF	Custer	27 min
May 20, 11:14 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Wheeler	46 min
May 20, 11:16 PM CDT	Special Weather Statement	LBF	Lincoln	44 min
May 20, 11:23 PM CDT	Areal Flood Advisory	LBF	Lincoln	5 hr
May 20, 11:27 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	33 min
May 20, 11:29 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	19 min
May 20, 11:47 PM CDT	Special Weather Statement	LBF	Brown	43 min
May 20, 11:55 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	35 min
May 20, 11:58 PM CDT	Special Weather Statement	LBF	Lincoln	47 min
May 21, 12:32 AM CDT	Special Weather Statement	LBF	Rock	28 min
May 21, 12:34 AM CDT	Special Weather Statement	LBF	Hayes	41 min
May 21, 12:40 AM CDT	Special Weather Statement	LBF	Lincoln	35 min
May 21, 12:41 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes	49 min
May 21, 12:56 AM CDT	Special Weather Statement	LBF	Keya Paha	34 min
May 21, 1:04 AM CDT	Areal Flood Advisory	LBF	Chase, Hayes	3 hr
May 21, 1:14 AM CDT	Special Weather Statement	LBF	Logan	46 min
May 21, 1:24 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Frontier, Hayes	66 min
May 21, 1:26 AM CDT	Flash Flood Warning	LBF	Chase, Hayes	3 hr
May 21, 1:35 AM CDT	Areal Flood Advisory	LBF	Lincoln	3 hr
May 21, 2:05 AM CDT	Severe Thunderstorm Warning	LBF	Frontier, Hayes, Lincoln	55 min
May 21, 2:22 AM CDT	Special Weather Statement	LBF	Custer	53 min

Nearby

Flash Flood Warnings in Nebraska, 2024 Every flash flood warning in 2024

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.