Alert archive / Nebraska / Flash Flood Warnings in 2022

Flash Flood Warning 2, NWS North Platte, NE

July 6, 2022Sheridan County, Nebraska

NWS North Platte, NE issued this flash flood warning at Jul 6, 2022, 7:54 PM MDT for Sheridan 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: Jul 6, 2022, 7:54 PM MDT (01:54 UTC)
Expired: Jul 6, 2022, 10:45 PM MDT
In force: 3 hr
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Flood severity: None

County Sheridan County, NE

The radar

The Rapid City radar (KUDX), 164 km from the middle of the area, began a volume at 01:56 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

Rapid City, SD (KUNR), launched 00:00Z, 1.9 hours before the alert went out and 159 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: 1 J/kg
Mixed-layer CIN: -244 J/kg
Mixed-layer LCL: 2133 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -44 m²/s²
0-3 km storm-relative helicity: -37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

672 
WGUS53 KLBF 070154
FFWLBF
NEC161-070445-
/O.NEW.KLBF.FF.W.0002.220707T0154Z-220707T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service North Platte NE
754 PM MDT Wed Jul 6 2022

The National Weather Service in North Platte has issued a

* Flash Flood Warning for...
  Central Sheridan County in the panhandle of Nebraska...

* Until 1045 PM MDT.

* At 754 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 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...
  Rushville and Lone Butte.

This includes the following highways...
	Highway 20 between mile markers 81 and 95.
	Highway 250 between mile markers 41 and 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4274 10219 4260 10239 4260 10251 4266 10267
      4274 10263

FLASH FLOOD...RADAR INDICATED

$$

MBS

2 follow-up statements

046 
WGUS73 KLBF 070337
FFSLBF

Flash Flood Statement
National Weather Service North Platte NE
937 PM MDT Wed Jul 6 2022

NEC161-070445-
/O.CON.KLBF.FF.W.0002.000000T0000Z-220707T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sheridan NE-
937 PM MDT Wed Jul 6 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM MDT THIS 
EVENING FOR CENTRAL SHERIDAN COUNTY...

At 937 PM MDT, Local law enforcement reports that some water and mud 
remain on highway 20 and other local roads in Rushville.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

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

Some locations that will experience flash flooding include...
  Rushville and Lone Butte.

This includes the following highways...
	Highway 20 between mile markers 81 and 95.
	Highway 250 between mile markers 41 and 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4274 10219 4260 10239 4260 10251 4266 10267
      4274 10263

FLASH FLOOD...OBSERVED

$$

MBS

549 
WGUS73 KLBF 070443
FFSLBF

Flash Flood Statement
National Weather Service North Platte NE
1043 PM MDT Wed Jul 6 2022

NEC161-070453-
/O.EXP.KLBF.FF.W.0002.000000T0000Z-220707T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sheridan NE-
1043 PM MDT Wed Jul 6 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 1045 PM MDT THIS EVENING FOR 
CENTRAL SHERIDAN COUNTY...

The heavy rain has ended and flood waters have receded. Flooding is 
no longer expected to pose a threat. Please continue to heed 
remaining road closures and be alert for mud or debris on roadways.

LAT...LON 4274 10219 4260 10239 4260 10251 4266 10267
      4274 10263

$$

MBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 6:03 PM MDT	Special Weather Statement	LBF	Sheridan	42 min
Jul 6, 6:41 PM MDT	Areal Flood Advisory	LBF	Sheridan	71 min
Jul 6, 7:21 PM MDT	Areal Flood Advisory	LBF	Sheridan	33 min
Jul 6, 7:52 PM MDT	Flash Flood Warning	LBF	Sheridan	3 hr
Jul 6, 8:23 PM MDT	Flash Flood Warning	LBF	Sheridan	3 hr
Jul 7, 12:43 AM MDT	Flash Flood Warning	LBF	Garden, Grant, Sheridan	3 hr
Jul 7, 5:41 AM MDT	Areal Flood Advisory	LBF	Frontier, Lincoln	3 hr
Jul 7, 7:25 AM MDT	Areal Flood Advisory	LBF	Custer, Garfield, Loup	6 hr
Jul 7, 8:13 AM MDT	Areal Flood Advisory	LBF	Blaine, Custer, Loup	4 hr
Jul 7, 11:14 AM MDT	Special Weather Statement	LBF	Logan, Thomas	46 min
Jul 7, 11:20 AM MDT	Areal Flood Advisory	LBF	Custer, Garfield, Loup	3 hr
Jul 7, 11:41 AM MDT	Flash Flood Warning	LBF	Custer, Loup	3 hr
Jul 7, 11:57 AM MDT	Special Weather Statement	LBF	Custer	48 min
Jul 7, 12:01 PM MDT	Special Weather Statement	LBF	Lincoln	44 min
Jul 7, 12:51 PM MDT	Areal Flood Advisory	LBF	Custer	3 hr
Jul 7, 3:50 PM MDT	Special Weather Statement	LBF	Boyd	40 min
Jul 7, 4:42 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	63 min
Jul 7, 5:43 PM MDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	34 min

Nearby

Flash Flood Warnings in Nebraska, 2022 Every flash flood warning in 2022

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.