Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 157, NWS Birmingham, AL

August 30, 1990Hale County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 30, 1990, 5:13 AM CDT for Hale County, Alabama. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Aug 30, 1990, 5:13 AM CDT (10:13 UTC)
Expired
Aug 30, 1990, 6:00 AM CDT
In force
47 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Hale 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

Centreville/Bibb, AL (KCKL), launched 00:00Z, 10.2 hours before the alert went out and 43 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, Centreville/Bibb, AL at 00:00Z on 1990-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1492 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, Centreville/Bibb, AL at 00:00Z on 1990-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
1492 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
2140 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 301015
SVRBHM
ALC065-301100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
513 AM CDT THU AUG 30 1990
 
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  600 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH ALABAMA
 
   ...HALE COUNTY
 
AT 510 AM WEATHER SERVICE RADAR INDICATED AT SEVERE THUNDERSTORM IN
NORTHERN HALE COUNTY NEAR AKRON.THIS STORM WAS MOVING THE
SOUTHEAST AT 20 MPH...IN THE GENERAL DIRECTION OF GREENSBORO.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm 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, Aug 29, 11:50 PM CDT, 5 hours 23 minutes before
ALZ004>009-011-013-300550-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1150 PM CDT WED AUG 29 1990

        ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2AM CDT FOR PORTIONS
                    OF NORTH AND EAST CENTRAL ALABAMA...

AT 1145 PM CDT...WEATHER SERVICE RADAR IN CENTREVILLE CONTINUED TO SHOW AN
AREA OF STRONG THUNDERSTORMS MOVING INTO EAST CENTRAL ALABAMA. THIS AREA
SHOULD MOVE INTO NORTHERN ETOWAH AND CHEROKEE COUNTIES SHORTLY. THIS AREA OF
STORMS HAS A HISTORY OF PRODUCING STRONG WINDS...HEAVY RAINFALL...AND FREQUENT
LIGHTNING. THESE STORMS ARE MOVING TO THE SOUTHEAST AT 30 MPH.

RESIDENTS OF NORTH AND CENTRAL ALABAMA SHOULD STAY INFORMED OF THE LATEST
WEA;THER DEVELOPMENTS BY TUNING IN LOCAL TV...RADIO...OR NOAA WEATHER RADIO
FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Aug 30, 12:43 AM CDT, 4 hours 30 minutes before
ALZ004>009-011-013-300643-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1243 AM CDT THU AUG 29 1990

SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 2AM CDT FOR PORTIONS
OF NORTH AND EAST CENTRAL ALABAMA.

AT 1243 PM CDT...WEATHER SERVICE RADAR IN CENTREVILLE CONTINUED TO SHOW AN
AREA OF LIGHT TO MODERATE SHOWERS COVERING MUCH OF CHEROKEE COUNTY. AN
ISOLATED THUNDERSTORM WAS IN EXTREME NORTHERN ETOWAH COUNTY ABOUT 20 MILES
NORTHEAST OF GADSDEN.  OTHER ISOLATED SHOWERS HAVE DEVELOPED IN EXTREME
EASTERN MISSISSIPPI ABOUT 25 MILES WEST OF VERNON IN LAMAR COUNTY.  ALL OF
THE RAIN ACTIVITY WAS MOVING TO THE EAST SOUTHEAST AT 20 MILES AN HOUR.

CONTINUE TO LISTEN TO NOAA WEqATHER RADIO...OR LOCAL NEWS MEDIA FOR LATER
STATEMENTS AND UPDATES THIS MORNING.
Special weather statement, Aug 30, 1:47 AM CDT, 3 hours 26 minutes before
ALZ004>009-011-013-300745-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
147 AM CDT THU AUG 29 1990

SEVERE THUNDERSTORM WATCH FOR NORTH AND EAST CENTRAL ALABAMA WILL
EXPIRE AT 2 AM.

AT 147 AM CDT WEATHER SERVICE RADAR AT CENTREVILLE SHOWED THE SHOWERS
AND THUNDERSTORMS...WHICH MOVED THROUGH NORTHEAST ALABAMA EARLIER
TONIGHT...HAVE NOW ENTERED GEORGIA.  ONLY SPOTTY LIGHT RAIN REMAINS IN
DE KALB AND CHEROKEE COUNTIES.

THE PO#TENTIAL FOR DEVELOPMENT OF SHOWERS AND THUNDERSTORMS STILL EXISTS
OVER NORTH ALABAMA...BUT THE THREAT OF SEVERE WEATHER HAS DIMINSHED
GREATLY AND NO ADDITIONAL WEATHER WATCHES ARE ANTICIPATED FOR THE
REMAINDER OF THE NIGHT.
Special weather statement, Aug 30, 4:50 AM CDT, 23 minutes before
ALZ004>009-011-013-301050-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
450 AM CDT THU AUG 29 1990

STRONG THUNDERSTORMS REDEVELOP THIS MORNING IN WEST CENTRAL ALABAMA.

AT 445 AM CDT WEATHER SERVICE RADAR AT CENTREVILLE SHOWED A FEW CLUSTERS
OF SHOWERS AND SOME STRONG THUNDERSTORMS IN WEST AND NORTH CENTRAL
ALABAMA.  THE STRONGEST STORM WAS IN FAYETTE COUNTY NEAR THE COMMUNITY
OF FAYETTE...SOME HAIL WAS INDICATED BY RADAR.  ANOTHER ISOLATED STRONG
STORM WAS IN CULLMAN COUNTY JUST TO THE EAST OF THE CITY OF CULLMAN.
A CLUSTER OF SHOWERS AND EMBEDDED THUNDERSHOWERS WERE LOCATED JUST SOUTH
OF THE CITY OF TUSCALOOSA AND EXTEND SOUTHWESTWARD IN NORTHERN GREENE
AND SUMTER COUNTIES.

ALL OF THE RAIN ACTIVITY WAS MOVING TO THE SOUTHEAST AT 20 MILES AN HOUR.

CONTINUE TO LISTEN TO NOAA WEATHER RADIO OR LOCAL NEWS MEDIA FOR LATER
WEATHER UPDATES AND STATEMENTS THIS MORNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:51 PM CDTSevere Thunderstorm WarningBMXLawrence, Morgan69 min
Aug 29, 9:02 PM CDTSevere Thunderstorm WarningBMXMorgan58 min
Aug 29, 9:18 PM CDTSevere Thunderstorm WarningBMXLimestone57 min
Aug 29, 10:26 PM CDTSevere Thunderstorm WarningBMXMadison64 min
Aug 29, 10:50 PM CDTSevere Thunderstorm WarningBMXMarshall, Morgan55 min
Aug 30, 8:02 AM CDTSevere Thunderstorm WarningBMXBibb28 min
Aug 30, 8:15 AM CDTSevere Thunderstorm WarningBMXChilton, Shelby60 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1990Every severe thunderstorm 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.