Flash Flood Warning 9, NWS Omaha, NE

Issued

Aug 7, 2021, 9:35 PM CDT (02:35 UTC)

Expired

Aug 8, 2021, 12:51 AM CDT

In force

3 hr

Issued by

NWS Omaha, NE

Area

Storm-based polygon

Damage threat

Considerable

Flood severity

None

Counties Pottawattamie County, IA, Douglas County, NE, Sarpy County, NE

The Omaha radar (KOAX), 28 km from the middle of the area, began a volume at 02:34 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

004 
WGUS53 KOAX 080235
FFWOAX
IAC155-NEC055-153-080730-
/O.NEW.KOAX.FF.W.0009.210808T0235Z-210808T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Omaha/Valley NE
935 PM CDT Sat Aug 7 2021

The National Weather Service in Omaha/Valley has issued a

* Flash Flood Warning for...
  Southwestern Pottawattamie County in southwestern Iowa...
  Douglas County in east central Nebraska...
  Northern Sarpy County in east central Nebraska...

* Until 230 AM CDT.

* At 935 PM CDT, Trained weather spotters reported thunderstorms 
  producing heavy rain across the warned area. Up to 3 inches of 
  rain have fallen. The expected rainfall rate is 3 inches in 4 
  hours. Additional rainfall amounts up to 2 inches are possible in 
  the warned area. Flash flooding is already occurring.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Trained spotters reported.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses. There
           are many reports of stranded cars and even people
           needing rescue. Please stay off the roads until the
           rain is done and water has subsided.

* Some locations that will experience flash flooding include...
  Omaha, Council Bluffs, Bellevue, Papillion, La Vista, Ralston, 
  Gretna, Elkhorn, Millard, Offutt AFB, Carter Lake, Boys Town, 
  Chalco, Narrows River Park, Lake Manawa State Park and Koa 
  Campground.

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 4120 9630 4127 9628 4130 9621 4134 9618
      4137 9611 4138 9596 4129 9575 4119 9579
      4116 9585 4116 9588 4113 9587 4112 9588
      4112 9601 4114 9607 4116 9608 4116 9613
      4108 9617 4106 9628 4110 9631

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...3 INCHES IN 4 HOURS

$$

Pearson

530 
WGUS73 KOAX 080551 RRA
FFSOAX

Flash Flood Statement
National Weather Service Omaha/Valley NE
1251 AM CDT Sun Aug 8 2021

IAC155-NEC055-153-080601-
/O.CAN.KOAX.FF.W.0009.000000T0000Z-210808T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Pottawattamie IA-Douglas NE-Sarpy NE-
1251 AM CDT Sun Aug 8 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN POTTAWATTAMIE, 
DOUGLAS AND NORTHERN SARPY COUNTIES...

Though the heavy rain has ended, please continue to heed remaining 
road closures.

LAT...LON 4120 9630 4127 9628 4130 9621 4134 9618
      4137 9611 4138 9596 4129 9575 4119 9579
      4116 9585 4116 9588 4113 9587 4112 9588
      4112 9601 4114 9607 4116 9608 4116 9613
      4108 9617 4106 9628 4110 9631

$$

Pearson

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

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.