Alert archive / Alabama / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 41, NWS Birmingham, AL

April 9, 1991Tuscaloosa County, Walker County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 9, 1991, 5:42 PM CDT for Tuscaloosa County, Walker County, Alabama. It was in force for 48 min.

The area

The counties it named.

The facts

Issued: Apr 9, 1991, 5:42 PM CDT (22:42 UTC)
Expired: Apr 9, 1991, 6:30 PM CDT
In force: 48 min
Issued by: NWS Birmingham, AL
Area: Whole counties

Counties Tuscaloosa County, AL, Walker County, AL

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 10.7 hours before the alert went out and 284 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: 2634 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 28 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

Local storm report, Apr 9, 3:29 PM CDT, 2 hours 13 minutes before

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Special weather statement, Apr 9, 3:39 PM CDT, 2 hours 3 minutes before

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Local storm report, Apr 9, 4:02 PM CDT, 1 hour 40 minutes before

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Special weather statement, Apr 9, 4:32 PM CDT, 1 hour 10 minutes before

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Local storm report, Apr 9, 4:49 PM CDT, 53 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
447 PM CDT TUE APR 9 1991

305 PM CDT...HALE COUNTY, AL...CITY OF MOUNDVILLE...MARBLE SIZED HAIL
             FELL.
410 PM CDT...MARION COUNTY, AL...MARBVLE SIZED HAIL FELL IN GUIN.

425 PM CDT...ETOWAH COUNTY, AL...GOLFBALL SIZED HAIL FELL EAST OF THE CITY
              OF GADSDEN.

440 PM CDT...CHILTON COUNTY, AL...DIME SIZED HAIL FELL NORTH OF THE
             COMMUNITY OF JEMISON.

Special weather statement, Apr 9, 4:59 PM CDT, 43 minutes before

ALZ010-011-012-014-100000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MONTGOMERY AL
455 PM CDT TUE APR 9 1991

AT 445 PM RADAR SHOWED NUMEROUS THUNDERSTORMS OVER WEST AND CENTRAL
ALABAMA. ONE OF THE STRONGEST STORMS WAS JUST WEST OF THE MONTGOMERY
AIRPORT MOVING EAST AT AROUND 30 MPH. THIS STORM WILL BE MOVING OVER
THE CITY OF MONTGOMERY BETWEEN 5 AND 530 PM. OTHER STRONG
THUNDERSTORMS WERE IN A BAND FROM TALLEDEGA TO DEMOPOLIS...ALSO MOVjING
EAST. A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR DALLAS AND
WILCOX COUNTIES UNTIL 8PM. PLEASE REMAIN ALERT AND READY TO MOVE TO A
SAFE PLASE IF ONE OF THE STRONGER THUNDERSTORMS APPROACHES.

DEVAUGHN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 12:08 PM CDT	Severe Thunderstorm Warning	BMX	Colbert, Franklin, Lauderdale	67 min
Apr 9, 1:50 PM CDT	Severe Thunderstorm Warning	BMX	Lawrence, Limestone, Morgan	55 min
Apr 9, 2:08 PM CDT	Severe Thunderstorm Warning	BMX	Madison, Morgan	44 min
Apr 9, 2:08 PM CDT	Severe Thunderstorm Warning	BMX	Lawrence, Limestone	23 min
Apr 9, 2:21 PM CDT	Severe Thunderstorm Warning	BMX	Hale, Tuscaloosa	69 min
Apr 9, 2:25 PM CDT	Severe Thunderstorm Warning	BMX	Fayette	65 min
Apr 9, 2:31 PM CDT	Severe Thunderstorm Warning	BMX	Jackson, Madison, Marshall, Morgan	59 min
Apr 9, 2:56 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	64 min
Apr 9, 4:31 PM CDT	Severe Thunderstorm Warning	BMX	Etowah	44 min
Apr 9, 4:44 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	61 min
Apr 9, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	54 min
Apr 9, 4:54 PM CDT	Severe Thunderstorm Warning	BMX	Fayette	51 min
Apr 9, 6:43 PM CDT	Severe Thunderstorm Warning	BMX	Limestone, Morgan	37 min
Apr 9, 6:47 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	43 min
Apr 9, 6:55 PM CDT	Severe Thunderstorm Warning	BMX	Shelby	50 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1991 Every 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.