Alert archive / Nebraska / Flash Flood Warnings in 1993

Flash Flood Warning 21, NWS Omaha, NE

July 8, 1993Burt County, Dodge County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jul 8, 1993, 8:33 PM CDT for Burt County, Dodge County, Nebraska. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jul 8, 1993, 8:33 PM CDT (01:33 UTC)
Expired: Jul 9, 1993, 5:30 AM CDT
In force: 9 hr
Issued by: NWS Omaha, NE
Area: Whole counties

Counties Burt County, NE, Dodge County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.6 hours before the alert went out and 45 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3257 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 692 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 244 m²/s²
0-3 km storm-relative helicity: 341 m²/s²
Significant tornado parameter: 6.3
Supercell composite: 27.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 090134
FFWOMA
NEC021-053-091030-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE OMAHA NE
833 PM CDT THU JUL 8 1993
 
THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  530 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL NEBRASKA
 
   ...BURT COUNTY...DODGE COUNTY
 
HEAVY RAINS EARLY TODAY AND AGAIN THIS EVENING HAVE FORCED MANY STREAMS
OUT OF THEIR BANKS IN CUMING AND BURT COUNTIES. THE LOGAN CREEK WAS
REPORTED OVER THE HIGHWAY 51 NEAR THE JUNCTION OF 16 NEAR LYONS...40
MILES NORTH OF OMAHA. THE ELKHORN RIVER WAS ALSO RUNNING NEAR BANKFULL
NEAR WISNER. RADAR INDICATED RAINFALLS OF 2 TO 3 INCHES HAVE FALLEN OVER
THIS AREA SINCE 530 PM CDT.
 
ANOTHER LINE OF THUNDERSTORMS WITH HEAVY RAIN WILL MOVING INTO THE AREA
AROUND MIDNIGHT TONIGHT AND WILL ONLY FORCE STREAMS AND RIVERS HIGHER.
THESE FLOODING PROBLEMS WILL PERSIST INTO FRIDAY MORNING.
 
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR HAS
BEEN REPORTED.  RESIDENTS SHOULD TAKE IMMEDIATE PRECAUTIONS.  DO
NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS BY FOOT OR BY AUTO.
 
DO NOT ATTEMPT TO DRIVE OVER A ROAD COVERED BY WATER.  THE ROAD
COULD BE WASHED OUT UNDER THE WATER SURFACE OR YOUR CAR COULD BE
SWEPT AWAY IF WATER IS FLOWING SWIFTLY.
 
 
CLARK
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 9:56 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson, Saline, Seward	49 min
Jul 8, 9:56 PM CDT	Severe Thunderstorm Warning	OAX	Butler	49 min
Jul 8, 10:08 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster	52 min
Jul 8, 10:23 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe, Sarpy, Saunders	52 min
Jul 8, 10:23 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	52 min
Jul 8, 10:34 PM CDT	Severe Thunderstorm Warning	OAX	Dodge	41 min
Jul 8, 10:51 PM CDT	Severe Thunderstorm Warning	OAX	Washington	69 min
Jul 8, 11:03 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster	27 min
Jul 8, 11:33 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson, Lancaster	42 min

Nearby

Flash Flood Warnings in Nebraska, 1993 Every flash flood warning in 1993

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.