Alert archive / Nebraska / Flash Flood Warnings in 1990

Flash Flood Warning 3, NWS Omaha, NE

June 15, 1990Washington County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 15, 1990, 1:35 AM CDT for Washington County, Nebraska. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Jun 15, 1990, 1:35 AM CDT (06:35 UTC)
Expired: Jun 15, 1990, 5:30 AM CDT
In force: 4 hr
Issued by: NWS Omaha, NE
Area: Whole counties

County Washington County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 6.6 hours before the alert went out and 27 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3606 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 150635
FFWOMA
NEC177-151030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
FLASH FLOOD WARNING 
NATIONAL WEATHER SERVICE OMAHA NE
135 AM CDT FRI JUN 15 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 530 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE EAST CENTRAL PART OF NEBRASKA
      WASHINGTON

AT 125 AM CDT RADAR SHOWED THUNDERSTORMS PRODUCING VERY HEAVY RAIN
CONTINUING OVER WASHINGTON COUNTY.  THIS HEAVY RAIN
COMBINED WITH RAINFALL LAST EVENING AND EARLIER THIS MORNING WILL
RESULT IN FLASH FLOODING.

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.

PEOPLE IN THE WARNED AREA...ESPECIALLY CAMPERS...SHOULD SEEK HIGHER
GROUND WITHOUT DELAY.  MOTORISTS SHOULD 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.

PEOPLE NEAR STREAMS OR IN LOW LYING AREAS SHOULD NOT WASTE TIME
TRYING TO SAVE PERSONAL PROPERTY...MOVE TO HIGH GROUND IMMEDIATELY.

PEOPLE IN ARLINGTON ON BELL CREEK SHOULD PREPARE FOR HIGH WATER.
FLOODING ON THE BELL CREEK IS OCCURING UPSTREAM AND WILL REACH
ARLINGTON BY 200 AM CDT.

SEELEY

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 15, 12:25 AM CDT, 1 hour 10 minutes before

NEZ005-011-016-150900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA NE
1220 AM CDT FRI JUN 15 1990

...TORNADO WATCH NO LONGER IN EFFECT FOR NEBRASKA PANHANDLE...

TORNADO WATCH NUMBER 465 HAS BEEN CANCELLED FOR THE CENTRAL AND
SOUTHERN NEBRASKA PANHANDLE.  IT REMAINS IN EFFECT FOR FOUR COUNTIES
IN SOUTHWEST NEBRASKA ... CHASE..DUNDY..HAYES..AND HITCHCOCK ...
UNTIL IT EXPIRES AT MIDNIGHT MDT...1 AM CDT.

STRONG THUNDERSTORMS IN NORTHEAST COLORADO STILL POSE SOME THREAT
AS THEY MOVE TOWARD SOUTHWEST NEBRASKA.

COSTANTINOU

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 8:12 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Saline	63 min
Jun 14, 10:57 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Saunders	48 min
Jun 14, 11:01 PM CDT	Severe Thunderstorm Warning	OAX	Butler	29 min
Jun 14, 11:02 PM CDT	Severe Thunderstorm Warning	OAX	Butler	28 min
Jun 15, 12:07 AM CDT	Flash Flood Warning	OAX	Dodge	4 hr
Jun 15, 12:57 AM CDT	Flash Flood Warning	OAX	Burt	4 hr
Jun 15, 5:31 AM CDT	Flash Flood Warning	OAX	Gage, Jefferson, Saline	3 hr

Nearby

Flash Flood Warnings in Nebraska, 1990 Every flash flood warning in 1990

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.