Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 119, NWS Mobile, AL

May 21, 1990Barbour County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 21, 1990, 3:55 PM CDT for Barbour County, Alabama. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 21, 1990, 3:55 PM CDT (20:55 UTC)
Expired
May 21, 1990, 5:00 PM CDT
In force
65 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Barbour County, AL

The radar

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

What was reported inside it

TimeReportWhereRemark
May 21, 3:55 PM CDTHail 1.75Barbour, AL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 8.9 hours before the alert went out and 205 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 12:00Z on 1990-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 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 12:00Z on 1990-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 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
173 J/kg
Mixed-layer CIN
-336 J/kg
Mixed-layer LCL
1194 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 212059
SVRMGM
ALC005-212200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
355 PM CDT MON MAY 21 1990
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH ALABAMA
 
   ...BARBOUR COUNTY
 
RADAR INDICATES AND STORM REPORTS INDICATE SEVERE THUNDERSTORMS OVER
SOUTH BARBOUR COUNTY MOVING NORTHEAST AT 20 MPH.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

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, May 21, 1:55 PM CDT, 2 hours before
ALZ013-015-016-MSZ014-013-212000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
155 PM CDT MON MAY 21 1990

...SEVERE THUNDERSTORM WATCH NUMBER 294 REMAINS IN EFFECT FOR PERRY
AND GREENE COUNTIES IN SOUTHEAST MISSISSIPPI UNTIL 500 PM... ...SEVERE
THUNDERSTORM WATCH NUMBER 295 REMAINS IN EFFECT UNTIL 800 PM FOR ALL
COUNTIES IN SOUTHWEST ALABAMA...

AT 150 PM A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR
MONTGOMERY TO NEAR WHATLEY IN CLARKE COUNTY ALABAMA. THESE STORMS WERE
MOVING EAST AT 25 MPH. THE STRONGEST THUNDERSTORM WAS LOCATED NEAR WHA
MARBLE SIZED HAIL WAS REPORTED EARLIER IN CENTRAL CLARKE COUNTY.

ANOTHER LINE OF STRONG THUNDERSTORMS WAS MOVING SOUTHEAST THROUGH
SOUTHEAST MISSISSIPPI. IT WAS LOCATED FROM NEAR CRANDALL TO SUMRALL TO
SOUTH OF MCCOMB. THE STRONGEST THUNDERSTORM WAS LOCATED NEAR
ELLISVILLE IN JONES COUNTY.

A WIND GUST LINE MAY STILL BE 10 TO 15 MILES AHEAD OF THE
THUNDERSTORMS IN SOUTHEAST MISSISSIPPI. WIND GUSTS TO NEAR 50 MPH WERE
REPORTED EARLIER.

PEOPLE IN THE WATCH AREA SHOULD REMAIN WEATHER CONSCIOUS THIS
AFTERNOON AS THESE THUNDERSTORMS MOVE THROUGH.
Local storm report, May 21, 3:35 PM CDT, 20 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
335 PM CDT MON MAY 21 1990

THE GROVE HILL PD REPORTED THAT POWER LINES WERE DOWN NEAR THAT
CITY AT APPROXIMATELY 300 PM...IN CLARKE COUNTY ALABAMA.
Local storm report, May 21, 3:46 PM CDT, 9 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
345 PM CDT MON MAY 21 1990

EVERGREEN STATE TROOPERS REPORTED MARBLE SIZED HAIL IN MONROEVILLE,
MONROEVILLE COUNTY ALABAMA.
Local storm report, May 21, 3:47 PM CDT, 8 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
345 PM CDT MON MAY 21 1990

EVERGREEN STATE TROOPERS REPORTED MARBLE SIZED HAIL IN MONROEVILLE,
MONROE COUNTY ALABAMA.
Special weather statement, May 21, 3:48 PM CDT, 7 minutes before
FLZ001-002-003-004-212130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
335 PM CDT MON MAY 21 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL COUNTIES IN THE FLORIDA
PANHANDLE UNTIL 9 PM...

...STRONG THUNDERSTORMS WERE MOVING THROUGH SOUTH ALABAMA AND SOUTHEAST
MISSISSIPPI...

AT 330 PM CDT...STRONG THUNDERSTORMS WERE OVER SOUTH ALABAMA AND SOUTH-
EAST MISSISSIPPI...WITH THE STRONGER STORMS OVER A 15 MILE WIDE LINE
FROM NEAR MONROEVILLE IN MONROE COUNTY TO 40 MILES NORTHWEST OF MOBILE.
WITH SCATTERED STRONG THUNDERSTORMS OVER SOUTHEAST ALABAMA BETWEEN
DOTHAN AND MONTGOMERY...AND FROM ANDALUSIA TO ENTERPRISE.

THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 25 MILES AN HOUR...
WITH THE INDIVIDUAL THUNDERSTORMS MOVING NORTHEAST AT 30 MILES AN HOUR.
THE STRONGER THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF VERY
HEAVY RAINS...GUSTY WINDS...FREQUENT LIGHTNING STRIKES...AND HAIL.

PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS
AND BE ON THE ALERT FOR POSSIBLE SEVERE WEATHER CONDITIONS WHILE
THE THUNDERSTORMS CONTINUE IN THE AREA.

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 12:11 PM CDTSevere Thunderstorm WarningMOBCoosa64 min
May 21, 12:29 PM CDTSevere Thunderstorm WarningMOBTallapoosa61 min
May 21, 12:42 PM CDTSevere Thunderstorm WarningMOBDallas, Wilcox63 min
May 21, 1:47 PM CDTSevere Thunderstorm WarningMOBMontgomery43 min
May 21, 2:29 PM CDTSevere Thunderstorm WarningMOBLee61 min
May 21, 2:39 PM CDTSevere Thunderstorm WarningMOBClarke, Washington51 min
May 21, 2:43 PM CDTSevere Thunderstorm WarningMOBCovington62 min
May 21, 2:52 PM CDTSevere Thunderstorm WarningMOBCoffee68 min
May 21, 3:06 PM CDTSevere Thunderstorm WarningMOBPike69 min
May 21, 3:16 PM CDTSevere Thunderstorm WarningMOBHenry59 min
May 21, 4:30 PM CDTSevere Thunderstorm WarningMOBEscambia30 min
May 21, 4:59 PM CDTSevere Thunderstorm WarningMOBCoffee, Covington61 min
May 21, 5:27 PM CDTSevere Thunderstorm WarningMOBGeneva, Houston63 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.