Alert archive / Nebraska / Flash Flood Warnings in 1995

Flash Flood Warning 4, NWS Omaha, NE

August 23, 1995Cedar County, Knox County, Nebraska

NWS Omaha, NE issued this flash flood warning at Aug 23, 1995, 2:40 AM CDT for Cedar County, Knox County, Nebraska. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Aug 23, 1995, 2:40 AM CDT (07:40 UTC)
Expired
Aug 23, 1995, 7:00 AM CDT
In force
4 hr
Issued by
NWS Omaha, NE
Area
Whole counties

Counties Cedar County, NE, Knox County, NE

The radar

The Sioux Falls radar (KFSD), 128 km from the middle of the area, began a volume at 07:39 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, 7.7 hours before the alert went out and 175 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 1995-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 632 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 1995-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.1939Sfc1 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
632 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1199 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
314 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 230742
FFWOMA
NEC027-107-231200-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
240 AM CDT WED AUG 23 1995
 
THE NATIONAL WEATHER SERVICE IN OMAHA/VALLEY HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  700 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST NEBRASKA
 
   ...CEDAR COUNTY...NORTHEASTERN KNOX COUNTY
 
DOPPLER RADAR INDICATED THUNDERSTORMS HAVE DROPPED 2 TO 3 INCHES OF RAIN
FROM NORTHEAST KNOX INTO CEDAR COUNTY SINCE MIDNIGHT. THUNDERSTORMS WILL
LIKELY CONTINUE MOVING FROM NORTHEAST KNOX ACROSS CEDAR COUNTY THROUGH
AT LEAST 400 OR 500 AM.
 
AREAS WHERE FLASH FLOODING IS MOST LIKELY...
 
KNOX COUNTY...MAINLY ALONG AND NORTHEAST OF A LINE FROM NIOBRARA THROUGH
BLOOMFIELD.
 
CEDAR COUNTY...ALL BUT ESPECIALLY NORTH OF COLERIDGE.
 
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR HAS
BEEN REPORTED.  RESIDENTS SHOULD TAKE IMMEDIATE PRECAUTIONS.  DO
NOT ALTTEMPT TO CROSS SWIFTLY FLOWING WATERS BY FOOT OR BY AUTO.
 
CHERMOK

Nearby

Flash Flood Warnings in Nebraska, 1995Every flash flood warning in 1995

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.