Alert archive / Alabama / Flash Flood Warnings in 1990

Flash Flood Warning 79, NWS Birmingham, AL

December 22, 1990Jackson County, Alabama

NWS Birmingham, AL issued this flash flood warning at Dec 22, 1990, 7:34 PM CST for Jackson County, Alabama. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Dec 22, 1990, 7:34 PM CST (01:34 UTC)
Expired
Dec 23, 1990, 1:30 AM CST
In force
6 hr
Issued by
NWS Birmingham, AL
Area
Whole counties

County Jackson County, AL

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

Nashville Metro, TN (KBNA), launched 00:00Z, 1.6 hours before the alert went out and 160 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, Nashville Metro, TN at 00:00Z on 1990-12-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Nashville Metro, TN at 00:00Z on 1990-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 325 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
94 kt
0-1 km storm-relative helicity
325 m²/s²
0-3 km storm-relative helicity
347 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 KHSV 230134
FFWHSV
ALC071-230730-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
734 PM CST SAT DEC 22 1990
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  130 AM CST
 
 
IN NORTH ALABAMA
 
   ...JACKSON COUNTY
 
HUNTSVILLE RADAR AT 730 PM CST SHOWED THUNDERSTORMS WITH HEAVY
RAINFALL AMOUNTS OVER JACKSON COUNTY ALABAMA.
 
MOVEMENT WAS NORTHEAST AT AROUND 35 MPH.
 
THE BRIDGEPORT POLICE DEPARTMENT REPORTED AREAS OF LOCAL FLOODING.
THE SEQUATCHIE RIVER IN TENNESSEE IS ABOVE BANKFULL AND WATER
CONTINUES TO RISE.
 
 
 
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOOD"S AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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, Dec 22, 1:46 PM CST, 5 hours 48 minutes before
ALZ004>009-011-013-222100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
146 PM CST SAT DEC 22 1990

 ...TORNADO WATCH UNTIL 600 PM FOR MUCH OF NORTH AND WEST ALABAMA...
 ...FLASH FLOOD WATCH IN EFFECT FOR ALL OF NORTHERN ALABAMA TODAY...
 ...FLASH FLOOD WARNINGS REMAIN IN EFFECT FOR LAMAR..PICKENS..FAYETTE
 ..WALKER..MARION..WINSTON AND CULLMAN COUNTIES UNTIL 300 PM...

AT 144 PM...WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORMS JUST
WEST OF SUMTER COUNTY MOVING TO THE NORTHEAST AROUND 35 MILES AN HOURS.
THIS STROM WAS PRODUCING VERY HEAVY RAIN..STRONG WINDS..AND LIGHTNING
AND WILL LIKELY MOVE INTO SUMTER COUNTY IN THE NEXT HOUR.

ELSEWHERE...AREAS OF LIGHT TO MODERATE CONTINUED ACROSS NORTHWEST ALABAMA.
THE HEAVIEST RAIN WAS FALLING IN THE COUNTIES OF LAMAR NEAR THE CITY OF
MILLPORT AND IN FAYETTE COUNTY JUST SOUTH OF WINFIELD.

SEVERE WEATHER REMAINS A THREAT THROUGHOUT TODAY SO PERSONS ARE URGED TO
STAY TUNED FOR ADDITIONAL WEATHER INFORMATION.
Special weather statement, Dec 22, 2:40 PM CST, 4 hours 54 minutes before
ALZ004>009-011-013-222145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
245 PM CST SAT DEC 22 1990

 ...TORNADO WATCH UNTIL 600 PM FOR MUCH OF NORTH AND WEST ALABAMA...
 ...FLASH FLOOD WATCH IN EFFECT FOR ALL OF NORTHERN ALABAMA TODAY...
 ...FLASH FLOOD WARNINGS REMAIN IN EFFECT FOR LAMAR..PICKENS..FAYETTE
 ..WALKER..MARION..WINSTON AND CULLMAN COUNTIES UNTIL 300 PM...

AT 243 PM...WEATHER SERVICE RADAR CONTINUED TO SHOW SHOWERS AND
THUNDERSTORMS IN PORTIONS OF NORTHERN AND WESTERN ALABAMA. MOST OF THE
HEAVY RAIN AT 243 WAS WEST OF THE CITIES OF ONEONTA...BIRMINGHAM...AND
CENTREVILLE...WITH THE STRONGEST STORMS NEAR FAYETTE...NORTHWEST OF
ALICEVILLE...AND JUST NORTH OF GAINSVILLE.

ALL THE ACTIVITY WAS MOVING TO THE NORTHEAST AT AROUND 35 MPH. SEVERE
WEATHER REMAINS A THREAT THROUGHOUT THE REST OF TODAY FOR ALL OF NORTH
CENTRAL ALABAMA...SO PERSONS ARE URGED TO STAY TUNED FOR ADDITIONAL
WEATHER STATEMENTS AND POSGSIBLE WARNINGS.
Special weather statement, Dec 22, 4:55 PM CST, 2 hours 39 minutes before
ALZ004>009-011-013-230000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
455 PM CST SAT DEC 22 1990

 ...TORNADO WATCH UNTIL 600 PM FOR MUCH OF NORTH AND WEST ALABAMA...
 ...FLASH FLOOD WATCH IN EFFECT FOR MOST OF NORTHERN...WESTERN AND
CENTRAL ALABAMA TONIGHT...

AT 455 PM...WEATHER SERVICE RADAR CONTINUED TO SHOW A LARGE AREA OF
RAIN WITH ISOLATED HEAVIER THUNDERSTORMS ACROSS MUCH OF NORTH AND
CENTRAL ALABAMA. THE STRONGEST THUNDERSTORMS WERE INDICATED IN CULLMAN
COUNTY JUST NORTHEAST OF SMITH DAM...AND IN SOUTHERN TUSCALOOSA COUNTY.
OTHER HEAVY RAINS...WITH POSSIBLE THUNDER...WERE OCCURING NEAR
DEMOPOLIS.

MOVEMENT WAS TO THE NORTHEAST AT AROUND 35 MPH.
Special weather statement, Dec 22, 5:59 PM CST, 1 hour 35 minutes before
ALZ004>009-011-013-230600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
600 PM CST SAT DEC 22 1990

 ...TORNADO WATCH FOR MUCH OF NORTH AND WEST ALABAMA HAS EXPIRED...
 ...FLASH FLOOD WATCH IN EFFECT FOR MOST OF NORTHERN...WESTERN AND
CENTRAL ALABAMA TONIGHT...

MODERATE RAIN WITH FEW HEAVY THUNDERSTORMS COVER A LARGE PORTION OF
NORTHERN...CENTRAL...AND WESTERN ALABAMA.  THE RAIN WILL PERSIST OVER
THE FLOOD WATCH AREA THROUGH THE EVENING.

WHILE THE RAIN CONTINUES...THE STRENGTH OF THE THUNDERSTORMS OVER THE
STATE HAVE WEAKENED.  WHILE NO PORTION OF ALABAMA REMAINS UNDER A
TORNADO WATCH...A FEW THUNDERSTORMS MAY STILL PRODUCE VERY HEAVY RAIN
AND STRONG GUSTY WINDS.

sALABAMIANS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS
THROUGH THE EVENING HOURS.

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 22, 10:15 PM CSTFlash Flood WarningBMXCullman, Walker, Winston4 hr
Dec 22, 10:15 PM CSTFlash Flood WarningBMXFayette, Lamar, Marion4 hr
Dec 22, 11:46 PM CSTFlash Flood WarningBMXLimestone, Morgan4 hr
Dec 23, 12:38 AM CSTFlash Flood WarningBMXLawrence, Limestone, Morgan4 hr
Dec 23, 12:38 AM CSTFlash Flood WarningBMXJackson, Madison4 hr
Dec 23, 1:50 AM CSTFlash Flood WarningBMXCullman, Marion, Walker, Winston5 hr
Dec 23, 1:50 AM CSTFlash Flood WarningBMXFayette, Lamar5 hr

Nearby

Flash Flood Warnings in Alabama, 1990Every 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.