Alert archive / Nebraska / Flash Flood Warnings in 2019

Flash Flood Warning 21, NWS Omaha, NE

March 17, 2019Dodge County, Nebraska

NWS Omaha, NE issued this flash flood warning at Mar 17, 2019, 3:56 PM CDT for Dodge County, Nebraska. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 17, 2019, 3:56 PM CDT (20:56 UTC)
Expired
Mar 17, 2019, 4:33 PM CDT
In force
37 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Emergency
Flash flood emergency
Flood severity
None

County Dodge County, NE

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 8.9 hours before the alert went out and 291 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, Topeka, KS at 12:00Z on 2019-03-17Temperature 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, Topeka, KS at 12:00Z on 2019-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.19395878Sfc1 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
1396 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

229 
WGUS53 KOAX 172056
FFWOAX
NEC053-180900-
/O.NEW.KOAX.FF.W.0021.190317T2056Z-190318T0900Z/
/00000.0.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Omaha/Valley Nebraska
Issued by National Weather Service Hastings NE
356 PM CDT SUN MAR 17 2019

...FLASH FLOOD EMERGENCY FOR NORTH BEND AND IMMEDIATE AREA...

The National Weather Service in Omaha has issued a

* Flash Flood Warning for...
  A Levee Failure in...
  Southwestern Dodge County in east central Nebraska...

* Until 400 AM CDT Monday.

* At 354 PM CDT, local law enforcement reported a levee breach on 
  the Platte River to the west of North Bend, which will cause rapid 
  water level rises in the North Bend area, and especially to the 
  southwest of North Bend. Please move to higher ground now!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.

Move to higher ground now. Act quickly to protect your life.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 4147 9687 4147 9676 4145 9676 4145 9678
      4144 9681 4144 9685 4145 9686 4145 9689

$$

SGK
1 follow-up statement
926 
WGUS73 KOAX 172133
FFSOAX

Flash Flood Statement
National Weather Service Omaha/Valley Nebraska
Issued by National Weather Service Hastings NE
433 PM CDT SUN MAR 17 2019

NEC053-172143-
/O.CAN.KOAX.FF.W.0021.000000T0000Z-190318T0900Z/
/00000.0.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DODGE NE-
433 PM CDT SUN MAR 17 2019

...THE FLASH FLOOD WARNING FOR A LEVEE FAILURE HAS BEEN CANCELLED FOR
SOUTHWESTERN DODGE COUNTY...

Water is no longer expected to pose a significant threat. Please 
continue to heed all road closures.

LAT...LON 4147 9687 4147 9676 4145 9676 4145 9678
      4144 9681 4144 9685 4145 9686 4145 9689

$$

SGK

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 16, 9:08 PM CDTRiver Flood WarningOAXDodge46 hr
Mar 17, 4:24 AM CDTRiver Flood WarningOAXKnox15 hr

Nearby

Flash Flood Warnings in Nebraska, 2019Every flash flood warning in 2019

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.