Alert archive / Nebraska / Flash Flood Warnings in 2021

Flash Flood Warning 1, NWS Hastings, NE

May 2, 2021Adams County, Kearney County, Phelps County, Nebraska

NWS Hastings, NE issued this flash flood warning at May 2, 2021, 9:11 PM CDT for Adams County, Kearney County, Phelps 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 2, 2021, 9:11 PM CDT (02:11 UTC)
Expired
May 3, 2021, 3:15 AM CDT
In force
6 hr
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Flood severity
None

Counties Adams County, NE, Kearney County, NE, Phelps County, NE

The radar

The Grand Island radar (KUEX), 56 km from the middle of the area, began a volume at 02:12 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 2, 9:45 PM CDTFLASH FLOOD1 Ne Minden, NEFACEBOOK POST OF FLOODED UNDERPASS IN MINDEN.
May 2, 9:52 PM CDTFLOOD2 Ene Juniata, NEREPORT FROM MPING: STREET/ROAD FLOODING; STREET/ROAD CLOSED; VEHICLES STRANDED.

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, 2.2 hours before the alert went out and 146 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 2021-05-03Temperature 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, N. Platte/Lee Bi, NE at 00:00Z on 2021-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 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
1171 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
329 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

116 
WGUS53 KGID 030211
FFWGID
NEC001-099-137-030815-
/O.NEW.KGID.FF.W.0001.210503T0211Z-210503T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Hastings NE
911 PM CDT Sun May 2 2021

The National Weather Service in Hastings has issued a

* Flash Flood Warning for...
  Northwestern Adams County in south central Nebraska...
  Central Kearney County in south central Nebraska...
  Central Phelps County in south central Nebraska...

* Until 315 AM CDT Monday.

* At 911 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is ongoing or 
  expected to begin shortly as a line of thunderstorms has moved 
  very little over the past couple of hours and moderate to heavy 
  rain continues over much of the area.

  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...
  Holdrege, Minden, Kenesaw, Juniata, Axtell, Loomis, Funk, 
  Heartwell, Prosser and Norman.

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 4057 9955 4063 9893 4068 9871 4069 9856
      4061 9846 4052 9845 4046 9881 4045 9918
      4042 9957 4058 9955

FLASH FLOOD...RADAR INDICATED

$$

Heinlein
2 follow-up statements
970 
WGUS73 KGID 030539
FFSGID

Flash Flood Statement
National Weather Service Hastings NE
1239 AM CDT Mon May 3 2021

NEC001-099-137-030815-
/O.CON.KGID.FF.W.0001.000000T0000Z-210503T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams NE-Kearney NE-Phelps NE-
1239 AM CDT Mon May 3 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 AM CDT EARLY THIS 
MORNING FOR NORTHWESTERN ADAMS, CENTRAL KEARNEY AND CENTRAL PHELPS 
COUNTIES...

At 1239 AM CDT, local law enforcement reported that the underpass on 
the east side of Minden is closed, as well as West 1st Street and 
West 6th Street due to flooding from earlier storms. Also, Highway 6 
at Primrose was flooded where multiple accidents occurred from high 
water, but water has been receding.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement.

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...
  Holdrege, Minden, Kenesaw, Juniata, Axtell, Loomis, Funk, 
  Heartwell, Prosser and Norman.

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 4057 9955 4063 9893 4068 9871 4069 9856
      4061 9846 4052 9845 4046 9881 4045 9918
      4042 9957 4058 9955

FLASH FLOOD...OBSERVED

$$

Heinlein
512 
WGUS73 KGID 030812
FFSGID

Flash Flood Statement
National Weather Service Hastings NE
312 AM CDT Mon May 3 2021

NEC001-099-137-030822-
/O.EXP.KGID.FF.W.0001.000000T0000Z-210503T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams NE-Kearney NE-Phelps NE-
312 AM CDT Mon May 3 2021

...FLASH FLOOD WARNING AT 315 AM CDT EARLY THIS MORNING FOR 
NORTHWESTERN ADAMS, CENTRAL KEARNEY AND CENTRAL PHELPS COUNTIES HAS 
BEEN REPLACED WITH A FLOOD WARNING...

LAT...LON 4057 9955 4063 9893 4068 9871 4069 9856
      4061 9846 4052 9845 4046 9881 4045 9918
      4042 9957 4058 9955

$$

Heinlein

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 7:05 PM CDTSpecial Weather StatementGIDAdams, Kearney, Phelps25 min
May 2, 7:29 PM CDTSpecial Weather StatementGIDAdams, Gosper, Kearney, Phelps31 min
May 2, 7:35 PM CDTSpecial Weather StatementGIDPolk25 min
May 2, 7:35 PM CDTSevere Thunderstorm WarningGIDFurnas, Gosper, Harlan, Phelps40 min
May 2, 7:40 PM CDTSevere Thunderstorm WarningGIDAdams, Kearney35 min
May 2, 7:43 PM CDTSevere Thunderstorm WarningGIDPolk32 min
May 2, 7:50 PM CDTSpecial Weather StatementGIDHamilton25 min
May 2, 7:57 PM CDTSevere Thunderstorm WarningGIDHamilton, York33 min
May 2, 8:10 PM CDTSevere Thunderstorm WarningGIDAdams, Kearney35 min
May 2, 8:12 PM CDTSevere Thunderstorm WarningGIDPolk, York33 min
May 2, 8:16 PM CDTSpecial Weather StatementGIDAdams, Hamilton, Kearney, Phelps, Polk, York44 min
May 2, 8:19 PM CDTAreal Flood AdvisoryGIDAdams, Kearney100 min
May 2, 8:32 PM CDTAreal Flood AdvisoryGIDGosper, Kearney, Phelps5 hr
May 2, 8:35 PM CDTAreal Flood AdvisoryGIDPolk, York12 hr
May 2, 8:43 PM CDTSevere Thunderstorm WarningGIDPolk, York32 min
May 2, 8:54 PM CDTSevere Thunderstorm WarningGIDFranklin, Furnas, Harlan51 min
May 2, 9:26 PM CDTSpecial Weather StatementGIDFranklin49 min
May 2, 9:45 PM CDTSevere Thunderstorm WarningGIDFranklin, Harlan, Webster45 min
May 2, 10:12 PM CDTFlash Flood WarningGIDHamilton6 hr
May 2, 10:30 PM CDTSevere Thunderstorm WarningGIDFranklin, Nuckolls, Webster45 min
May 2, 11:14 PM CDTSpecial Weather StatementGIDFillmore, Nuckolls, Thayer61 min
May 3, 3:12 AM CDTAreal Flood WarningGIDAdams, Kearney, Phelps7 hr
May 3, 3:47 AM CDTAreal Flood WarningGIDHamilton6 hr
May 3, 4:29 AM CDTFrost AdvisoryGIDDawson, Greeley, Sherman, Valley29 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.