Alert archive / Alabama / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 66, NWS Mobile, AL

May 10, 1991Butler County, Lowndes County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 10, 1991, 3:36 PM CDT for Butler County, Lowndes County, Alabama. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
May 10, 1991, 3:36 PM CDT (20:36 UTC)
Expired
May 10, 1991, 4:45 PM CDT
In force
69 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Butler County, AL, Lowndes County, AL

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 8.6 hours before the alert went out and 165 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, Eglin AFB/Valpar, FL at 12:00Z on 1991-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1564 joules per kilogram.LCLEL10008507005003002001001 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, Eglin AFB/Valpar, FL at 12:00Z on 1991-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.1939Sfc1 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
1564 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
470 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 10, 2:30 PM CDT, 1 hour 6 minutes before
ALZ013-016-015-MSZ013-014-102130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
230 PM CDT FRI MAY 10 1991

...ONCE AGAIN HEAVY RAINFALL COVERING PARTS OF SOUTHEAST MISSISSIPPI
AND SOUTHWEST ALABAMA...

AT 225 PM CDT MOBILE RADAR SHOWED A LARGE AREA OF SHOWERS WITH SCATTERED
STRONG THUNDERSTORMS OVER EXTREME SOUTHEAST MISSISSIPPI AND SOUTHWEST
ALABAMA.  THE STRONGEST STORMS WERE FROM SOUTHEAST OF WIGGINS MISSISSIPPI
TO SOUTHEAST OF CITRONELLE ALABAMA.  THE STORMS WERE TRACKING EAST AT
20 MPH.

RESIDENTS IN OR NEAR THE STRONGER STORMS CAN EXPECT HEAVY RAINFALL...
CAUSING STREET AND FLOOD PRONE AREAS TO FLOOD BRIEFLY AS THESE STORMS
MOVE SLOWLY EAST ACROSS THE AREA FOR THE NE	XT COUPLE HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 4:45 PM CDTFlash Flood WarningMOBBaldwin, Mobile3 hr
May 10, 3:04 PM CDTFlash Flood WarningMOBGeorge3 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 1991Every severe thunderstorm warning 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.