Alert archive / Nebraska / Flash Flood Warnings in 1997

Flash Flood Warning 2, NWS Omaha, NE

June 24, 1997Gage County, Pawnee County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 24, 1997, 11:19 PM CDT for Gage County, Pawnee County, Nebraska. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 24, 1997, 11:19 PM CDT (04:19 UTC)
Expired
Jun 25, 1997, 5:20 AM CDT
In force
6 hr
Issued by
NWS Omaha, NE
Area
Whole counties

Counties Gage County, NE, Pawnee County, NE

The radar

The Omaha radar (KOAX), 125 km from the middle of the area, began a volume at 04:23 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

Omaha, NE (KOAX), launched 00:00Z, 4.3 hours before the alert went out and 125 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, Omaha, NE at 00:00Z on 1997-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2805 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 1997-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
2805 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1055 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KOMA 250419
FFWOMA
NEC067-133-251020-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1119 PM CDT TUE JUN 24 1997

* FLASH FLOOD WARNING FOR
  SOUTHERN GAGE COUNTY - IN SOUTHEASTERN NEBRASKA
  PAWNEE COUNTY - IN SOUTHEASTERN NEBRASKA

* UNTIL 520 AM CDT
 
* SOME STREAMS AFFECTED
INDIAN CREEK...PLUM CREEK...AND TURKEY CREEK.

* CAUSE AND EFFECT
  RADAR ESTIMATES 2.5 TO 4 INCHES OF RAIN HAVE FALLEN WITH
THUNDERSTORMS   FROM ODELL TO BARNESTON AND STEINAUER.  THUNDERSTORMS
WILL CONTINUE TO PRODUCE VERY HEAVY RAIN IN THESE AREAS INTO THE
EARLY MORNING HOURS...THUS FLASH FLOODING WITH REMAIN A THREAT.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
QUICKLY.  MOVE TO HIGHER GROUND.

SKERRITT

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 24, 11:02 PM CDT, 17 minutes before
NEZ034-044>045-050>053-065>067-078-IAZ043-055-056-069-250610-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1102 PM CDT TUE JUN 24 1997

THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED IN EAST CENTRAL
AND PARTS OF SOUTHEAST NEBRASKA...AND PART OF FAR WESTERN IOWA.

A SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR BURT...BUTLER...
CASS...DODGE...DOUGLAS...LANCASTER...SARPY...SAUNDERS...SEWARD...SALINE
...OR WASHINGTON COUNTIES IN NEBRASKA...OR FOR MONONA...HARRISON...
SHELBY...OR POTTAWATTAMIE COUNTIES IN WESTERN IOWA.

SCATTERED THUNDERSTORMS ARE EXPECTED TO MOVE SOUTH OF THE OMAHA AND
LINCOLN METROPOLITAN AREAS BY MIDNIGHT.  SEVERE WEATHER IS NO LONGER
A THREAT.

POLLACK
Special weather statement, Jun 24, 11:03 PM CDT, 16 minutes before
NEZ034-044>045-050>053-065>067-078-IAZ043-055-056-069-250610-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1102 PM CDT TUE JUN 24 1997

THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED IN EAST CENTRAL
AND PARTS OF SOUTHEAST NEBRASKA...AND PART OF FAR WESTERN IOWA.

A SEVERE THUNDERSTORM WATCH IS NO LONGER IN EFFECT FOR BURT...BUTLER...
CASS...DODGE...DOUGLAS...LANCASTER...SARPY...SAUNDERS...SEWARD...SALINE
...OR WASHINGTON COUNTIES IN NEBRASKA...OR FOR MONONA...HARRISON...
SHELBY...OR POTTAWATTAMIE COUNTIES IN WESTERN IOWA.

SCATTERED THUNDERSTORMS ARE EXPECTED TO MOVE SOUTH OF THE OMAHA AND
LINCOLN METROPOLITAN AREAS BY MIDNIGHT.  SEVERE WEATHER IS NO LONGER
A THREAT.

POLLACK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 10:10 PM CDTSevere Thunderstorm WarningOAXGage50 min
Jun 25, 5:25 AM CDTFlash Flood WarningOAXGage, Pawnee3 hr

Nearby

Flash Flood Warnings in Nebraska, 1997Every flash flood warning in 1997

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.