Alert archive / Nebraska / Flash Flood Warnings in 1992

Flash Flood Warning 21, NWS Omaha, NE

September 5, 1992Richardson County, Nebraska

NWS Omaha, NE issued this flash flood warning at Sep 5, 1992, 6:14 PM CDT for Richardson County, Nebraska. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Sep 5, 1992, 6:14 PM CDT (23:14 UTC)
Expired
Sep 5, 1992, 10:15 PM CDT
In force
4 hr
Issued by
NWS Omaha, NE
Area
Whole counties

County Richardson County, NE

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.2 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, Topeka, KS at 12:00Z on 1992-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1061 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, Topeka, KS at 12:00Z on 1992-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
1061 J/kg
Mixed-layer CIN
-255 J/kg
Mixed-layer LCL
676 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 052317
FFWOMA
NEC147-060315-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA NE
614 PM CDT SAT SEP 5 1992
 
THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST NEBRASKA
 
   ...RICHARDSON COUNTY
 
BY 600 PM CDT...STRONG THUNDERSTORMS HAVE DUMPED UP TO 6 INCHES OF RAIN
OVER PAWNEE COUNTY. THE SHERIFF REPORTED THE NORTH FORK OF THE BIG
NEMAHA RIVER NEAR TABLE ROCK...OR 50 MILES SOUTHWEST OF LINCOLN...WAS
HALF BANK FULL AND RISING. THIS TREMENDOUS AMOUNT OF WATER WAS HEADING
TO THE EAST AND COMBINED WITH HEAVY RAIN OVER RICHARDSON COUNTY...WILL
CREATE RAPID RISES IN THE BIG NEMAHA BASIN THROUGHOUT THE EVENING.
 
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR HAS
BEEN REPORTED.  TAKE IMMEDIATE PRECAUTIONS!!  DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS BY FOOT OR BY AUTO.
 
PEOPLE IN THE WARNED AREA...ESPECIALLY CAMPERS...SHOULD SEEK HIGHER
GROUND WITHOUT DELAY.  USE CAUTION IN APPROACHING LOW AREAS OF ROADS.
DO NOT ATTEMPT TO DRIVE OVER A ROAD COVERED BY WATER.  THE ROAD
COULD BE WASHED OUT UNDER THE WATER SURFACE OR YOUR CAR COULzD BE
SWEPT AWAY IF WATER IS FLOWING SWIFTLY.
 
ANDERSON

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 5, 4:23 PM CDTSevere Thunderstorm WarningOAXNemaha52 min
Sep 5, 5:05 PM CDTSevere Thunderstorm WarningOAXCass55 min
Sep 5, 5:16 PM CDTTornado WarningOAXCass29 min
Sep 5, 5:20 PM CDTSevere Thunderstorm WarningOAXNemaha, Richardson55 min
Sep 5, 5:38 PM CDTFlash Flood WarningOAXNemaha4 hr
Sep 5, 6:08 PM CDTFlash Flood WarningOAXPawnee4 hr
Sep 5, 6:08 PM CDTSevere Thunderstorm WarningOAXPawnee6 hr

Nearby

Flash Flood Warnings in Nebraska, 1992Every flash flood warning in 1992

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.