Alert archive / Alabama / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 29, NWS Mobile, AL

April 25, 1993Washington County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 25, 1993, 10:55 PM CDT for Washington County, Alabama. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: Apr 25, 1993, 10:55 PM CDT (03:55 UTC)
Expired: Apr 25, 1993, 11:45 PM CDT
In force: 50 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Washington County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 00:00Z, 3.9 hours before the alert went out and 191 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: 495 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1206 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 260358
SVRMOB
ALC129-260445-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1055 PM CDT SUN APR 25 1993
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1145 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST ALABAMA
 
   ...NORTHERN WASHINGTON COUNTY
 
AT 1054 PM THE MOBILE RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES
WEST OF MILLRY MOVING TOWARD THE EAST AT 25 MPH.
 
THIS THUNDERSTORM WILL MOVE NEAR HEALING SPRINGS AND MILLRY WITH LARGE
HAIL AND DAMAGING WINDS.
 
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, Apr 25, 9:59 PM CDT, 56 minutes before

ALZ013-260400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
956 PM CDT SUN APR 25 1993

...STRONG THUNDERSTORMS APPROACHING WASHINGTON AND CLARKE COUNTIES OF
ALABAMA...

A LINE OF STRONG THUNDERSTORMS MOVING TOWARD THE SOUTHEAST OUT OF EAST
CENTRAL MISSISSIPPI IS APPROACHING PORTIONS OF SOUTHWEST ALABAMA.
THESE THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE NORTHWEST PORTIONS OF
WASHINGTON AND CLARKE COUNTIES DURING THE NEXT COUPLE OF HOURS.

RESIDENTS IN THESE COUNTIES CAN EXPECT STRONG GUSTY WINDS...DANGEROUS
LIGHTINING...HEAVY RAINFALL AND POSSIBLE HAIL.

THE THUNDERSTORMS ARE LIKELY TO AFFECT OTHER SOUTHWEST ALABAMA COUNTIES
LATER THIS EVENING AND INTO THE EARLY MORNING HOURS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 11:46 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Washington	44 min
Apr 26, 1:25 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	65 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1993 Every severe thunderstorm 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.