Alert archive / Nebraska / Flash Flood Warnings in 2021

Flash Flood Warning 7, NWS Hastings, NE

August 22, 2021Furnas County, Harlan County, Nebraska

NWS Hastings, NE issued this flash flood warning at Aug 22, 2021, 9:28 PM CDT for Furnas County, Harlan County, Nebraska. It was in force for 7 hr. 5 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
Aug 22, 2021, 9:28 PM CDT (02:28 UTC)
Expired
Aug 23, 2021, 4:22 AM CDT
In force
7 hr
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Flood severity
None

Counties Furnas County, NE, Harlan County, NE

The radar

The Grand Island radar (KUEX), 100 km from the middle of the area, began a volume at 02:32 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
Aug 22, 9:30 PM CDTHEAVY RAIN 4.946 Ese Oxford, NE
Aug 22, 10:00 PM CDTHEAVY RAIN 5.96 Ese Oxford, NE
Aug 22, 11:00 PM CDTHEAVY RAIN 7.136 Ese Oxford, NEHEAVIEST HAS SHIFTED TO THE EAST OF THIS SITE.
Aug 22, 11:00 PM CDTHEAVY RAIN 7.136 Ese Oxford, NEHEAVIEST RAIN HAS SHIFTED TO THE EAST OF THIS SITE.
Aug 23, 3:30 AM CDTFLASH FLOOD6 Nnw Orleans, NEDELAYED REPORT FROM EARLY THIS MORNING. RESIDENT ALONG SCHOOL CREEK REPORTED THE CREEK WAS IN FLOOD AND OVER ROAD 716 FROM APPROXIMATELY 330-7 AM AND WATER GOT WITHIN 50 FEET OF HIS HOME. 5.40 INCHES OF RAIN MEASURED AT THIS LOCATION.

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, 2.5 hours before the alert went out and 135 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 2021-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1090 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939587897Sfc1 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
1090 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
2089 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted.

451 
WGUS53 KGID 230228
FFWGID
NEC065-083-230630-
/O.NEW.KGID.FF.W.0007.210823T0228Z-210823T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Hastings NE
928 PM CDT Sun Aug 22 2021

The National Weather Service in Hastings has issued a

* Flash Flood Warning for...
  East Central Furnas County in south central Nebraska...
  West Central Harlan County in south central Nebraska...

* Until 130 AM CDT.

* At 928 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 4 and 6 inches of rain 
  have fallen in much of the Warning area as of 925 PM CDT, 
  including a mesonet station with 4.52 inches six miles 
  east-southeast of Oxford. Additional rainfall of 1 to 2 inches are 
  possible in the warned area over the next few hours. 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 could experience flash flooding include...
  Oxford, Orleans, Stamford and Hollinger.

This includes the following streams and drainages...
  Methodist Creek, School Creek, Deep Creek, Rope Creek, Turkey 
  Creek, Flag Creek, Sappa Creek, Milrose Creek and Beaver Creek.

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 4013 9966 4014 9972 4014 9975 4016 9987
      4021 9987 4025 9971 4026 9939 4026 9932
      4017 9933 4012 9939

FLASH FLOOD...RADAR INDICATED

$$

Pfannkuch
3 follow-up statements
006 
WGUS73 KGID 230345
FFSGID

Flash Flood Statement
National Weather Service Hastings NE
1045 PM CDT Sun Aug 22 2021

NEC065-083-230630-
/O.CON.KGID.FF.W.0007.000000T0000Z-210823T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Furnas NE-Harlan NE-
1045 PM CDT Sun Aug 22 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM CDT MONDAY FOR 
EAST CENTRAL FURNAS AND WEST CENTRAL HARLAN COUNTIES...

At 1045 PM CDT, Doppler radar and automated rain gauges indicated 
thunderstorms producing heavy rain across the warned area, although 
it appears that heavy rain is finally starting to gradually end and 
move out of the area. However, between 4 up to perhaps as much as 8 
inches of rain have already fallen this evening per Doppler radar 
estimates, and a mesonet gauge six miles east-southeast of Oxford 
reported 6.64 inches as of 1030 PM CDT. As a result, lash flooding 
is likely ongoing in parts of the area.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

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 could experience flash flooding include...
  Oxford, Orleans, Stamford and Hollinger. Of particular concern is 
  rural areas between Oxford and Orleans.

This Warning includes the following streams and drainages...
  Methodist Creek, School Creek, Deep Creek, Rope Creek, Harlan 
  County  Lake Area, Foster Creek, Turkey Creek, Flag Creek, Sappa 
  Creek, Milrose Creek and Beaver Creek.

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 4013 9966 4014 9972 4014 9975 4016 9987
      4021 9987 4025 9971 4026 9939 4026 9932
      4017 9933 4012 9939

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Pfannkuch
777 
WGUS53 KGID 230508
FFWGID
NEC065-083-230930-
/O.EXT.KGID.FF.W.0007.000000T0000Z-210823T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Hastings NE
1208 AM CDT Mon Aug 23 2021

The National Weather Service in Hastings has extended the

* Flash Flood Warning for...
  East Central Furnas County in south central Nebraska...
  West Central Harlan County in south central Nebraska...

* Until 430 AM CDT.

* At 1208 AM CDT, Doppler radar estimates and automated rain gauges 
  indicated that thunderstorms earlier Sunday evening dropped as 
  much as 4 to perhaps 8 inches of rain, including a mesonet station 
  that measured 7.13 inches six miles east-southeast of Oxford. 
  Although rain had ended within the Warning area as of midnight 
  CDT, and any additional rain early Monday morning is expected to 
  be minimal, it is possible that flash flooding will continue to 
  affect parts of the area for a few more hours, particularly near 
  small creeks and streams.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  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 could experience flash flooding include...
  Oxford, Orleans, Stamford and Hollinger. Of particular concern is 
  rural areas between Oxford and Orleans.

This includes the following streams and drainages...
  Methodist Creek, School Creek, Deep Creek, Rope Creek, Harlan 
  County Lake Area, Foster Creek, Turkey Creek, Flag Creek, Sappa 
  Creek, Republican River, Milrose Creek and Beaver Creek.

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 4013 9966 4014 9972 4014 9975 4016 9987
      4021 9987 4025 9971 4026 9939 4026 9932
      4017 9933 4012 9939

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Pfannkuch
311 
WGUS73 KGID 230922
FFSGID

Flash Flood Statement
National Weather Service Hastings NE
422 AM CDT Mon Aug 23 2021

NEC065-083-230932-
/O.CAN.KGID.FF.W.0007.000000T0000Z-210823T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Furnas NE-Harlan NE-
422 AM CDT Mon Aug 23 2021

...FLASH FLOOD WARNING FOR EAST CENTRAL FURNAS AND WEST CENTRAL 
HARLAN COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

The heavy rain has ended, and the threat for life-threatening 
flooding has diminished. Therefore the Flash Flood Warning is being 
cancelled. An Areal Flood Warning remains in effect for this area 
into Monday morning to account for continued runoff. Please continue 
to heed remaining road closures.

LAT...LON 4013 9966 4014 9972 4014 9975 4016 9987
      4021 9987 4025 9971 4026 9939 4026 9932
      4017 9933 4012 9939

$$

Mangels

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:18 PM CDTSpecial Weather StatementGIDSherman42 min
Aug 22, 7:26 PM CDTAreal Flood AdvisoryGIDFranklin, Furnas, Harlan9 hr
Aug 22, 7:39 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson, Sherman26 min
Aug 22, 7:43 PM CDTSevere Thunderstorm WarningGIDFranklin, Harlan31 min
Aug 22, 8:11 PM CDTSpecial Weather StatementGIDFurnas, Harlan49 min
Aug 22, 8:13 PM CDTSpecial Weather StatementGIDFranklin47 min
Aug 22, 8:18 PM CDTSpecial Weather StatementGIDHoward, Merrick, Sherman42 min
Aug 22, 8:21 PM CDTSevere Thunderstorm WarningGIDBuffalo, Greeley, Hall, Howard, Merrick, Nance and 1 more39 min
Aug 22, 8:31 PM CDTSevere Thunderstorm WarningGIDFranklin, Nuckolls, Webster44 min
Aug 22, 8:52 PM CDTSpecial Weather StatementGIDFurnas, Harlan53 min
Aug 22, 8:57 PM CDTSevere Thunderstorm WarningGIDFranklin, Harlan, Kearney, Phelps48 min
Aug 22, 9:05 PM CDTAreal Flood AdvisoryGIDFurnas, Harlan7 hr
Aug 22, 9:15 PM CDTSpecial Weather StatementGIDNuckolls, Webster45 min
Aug 22, 9:33 PM CDTSpecial Weather StatementGIDFranklin42 min
Aug 22, 9:47 PM CDTSevere Thunderstorm Warning Considerable damage threatGIDFranklin, Webster43 min
Aug 22, 10:26 PM CDTSevere Thunderstorm WarningGIDWebster49 min
Aug 22, 11:00 PM CDTAreal Flood AdvisoryGIDFranklin, Harlan, Webster8 hr
Aug 22, 11:27 PM CDTSpecial Weather StatementGIDKearney48 min
Aug 22, 11:40 PM CDTSpecial Weather StatementGIDThayer50 min
Aug 23, 12:14 AM CDTSpecial Weather StatementGIDWebster46 min
Aug 23, 12:38 AM CDTSpecial Weather StatementGIDGosper, Phelps52 min
Aug 23, 1:22 AM CDTSpecial Weather StatementGIDKearney23 min
Aug 23, 2:14 AM CDTSpecial Weather StatementGIDWebster31 min
Aug 23, 2:45 AM CDTSpecial Weather StatementGIDNuckolls30 min
Aug 23, 4:19 AM CDTAreal Flood WarningGIDFurnas, Harlan6 hr
Aug 23, 5:06 AM CDTSpecial Weather StatementGIDNuckolls39 min
Aug 23, 5:58 AM CDTSpecial Weather StatementGIDNuckolls47 min
Aug 23, 6:21 AM CDTAreal Flood AdvisoryGIDNuckolls, Webster5 hr
Aug 23, 9:54 AM CDTSpecial Weather StatementGIDFranklin36 min
Aug 23, 10:42 AM CDTSpecial Weather StatementGIDWebster33 min
Aug 23, 3:59 PM CDTHeat AdvisoryGIDAdams, Buffalo, Clay, Fillmore, Franklin, Hall and 12 more28 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.