Alert archive / Alabama / Tornado Warnings in 1991

Tornado Warning 7, NWS Mobile, AL

April 25, 1991Baldwin County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 25, 1991, 3:20 AM CDT for Baldwin County, Alabama. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Apr 25, 1991, 3:20 AM CDT (08:20 UTC)
Expired
Apr 25, 1991, 4:15 AM CDT
In force
55 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Baldwin County, AL

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.3 hours before the alert went out and 192 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, Slidell Radar S, LA at 00:00Z on 1991-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 1991-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.19395878Sfc1 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
22 J/kg
Mixed-layer CIN
-424 J/kg
Mixed-layer LCL
1331 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
121 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 KMOB 250823
TORMOB
ALC003-097-MSC047-059-250915-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOBILE AL
320 AM CDT THU APR 25 1991
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
TORNADO AND SPECIAL MARINE WARNING EFFECTIVE UNTIL  415 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ALABAMA
 
   ...SOUTHERN BALDWIN COUNTY...SOUTHERN MOBILE COUNTY
 
IN SOUTHEAST MISSISSIPPI
 
   ...SOUTHERN HARRISON COUNTY...SOUTHERN JACKSON COUNTY
AT 315 AM CDT MOBILE RADAR SHOWED A SEVERE THUNDERSTORM 25 MILES SOUTH
OF BAY ST LOUIS MISSISSIPPI AND A CLUSTER OF INTENSE THUNDERSTORMS IN
THE ALABAMA AND MISSISSIPPI COASTAL WATERS FROM 10 MILES SOUTH OF HORN
ISLAND TO 20 MILES SOUTH OF DAUPHIN ISLAND MOVING TO THE NORTHEAST AT
45 MILES AN HOUR. DANGEROUS WATERSPOUTS AND TORNADOES ARE POSSIBLE
WITH THESE THUNDERSTORMS.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.

What forecasters said that day

The local office's own words before this tornado 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, 2:48 AM CDT, 32 minutes before
MSZ014-013-250900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
145 AM CDT THU APR 25 1991

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 600 AM CDT FOR ALL
COUNTIES IN SOUTHEAST MISSISSIPPI AND THE ADJACENT COASTAL WATERS...

AT 140 AM CDT MOBILE RADAR INDICATED SCATTERED INTENSE THUNDERSTORMS
OVER SOUTHEAST LOUISINA AND VERY STRONG THUNDERSTORMS DEVELOPING IN
SOUTHEAST MISSISSIPPI.  THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY
WINDS...HEAVY RAINFALL...DANGEROUS LIGHTNING AND POSSIBLY SOME HAILL.
THUNDERSTORMS WAS MOVING TO THE NORTHEAST AT 45 MILES AN HOUR.

TORNADOES ARE POSSIBLE IN THE WATCH AREA...OBSERVE SAFETY RULES IF
THREATENING WEATHER APPROACHES.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 3:20 AM CDTTornado WarningMOBMobile55 min

Nearby

Tornado Warnings in Alabama, 1991Every tornado warning in 1991Tornadoes in 1991

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.