Alert archive / Alabama / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 382, NWS Birmingham, AL

July 21, 2008Cherokee County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 21, 2008, 7:46 PM CDT for Cherokee County, Alabama. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 21, 2008, 7:46 PM CDT (00:46 UTC)
Expired: Jul 21, 2008, 8:15 PM CDT
In force: 29 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Cherokee County, AL

The radar

The Northeast Alabama radar (KHTX), 95 km from the middle of the area, began a volume at 00:49 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.8 hours before the alert went out and 136 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: 965 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 2233 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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.

NWS Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 7:00 PM CDT, 46 minutes earlier.

Area forecast discussion, Jul 21, 7:00 PM CDT, 46 minutes before

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Hazardous weather outlook, Jul 21, 1:30 PM CDT, 6 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
130 PM CDT MON JUL 21 2008

ALZ011>015-017>050-221830-
AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE-
CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE-
JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY-
PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA-
TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON-
130 PM CDT MON JUL 21 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

STRONG THUNDERSTORMS WILL BE POSSIBLE THROUGH 8 PM...MAINLY ACROSS
AREAS ALONG AND SOUTH OF A LINE EXTENDING FROM NEW WEST GREENE...
ELLARDS...CLANTON...ALEXANDER CITY AND WHITE PLAINS IN SOUTH
CENTRAL ALABAMA. THE MAIN THREATS WILL BE STRONG GUSTY WINDS OF UP
TO 45 MPH AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

STRONG THUNDERSTORMS ARE POSSIBLE ON TUESDAY AND WEDNESDAY ACROSS ALL
OF CENTRAL ALABAMA MAINLY BETWEEN NOON AND 10 PM. THE MAIN THREAT
WITH THESE STORMS WILL BE STRONG GUSTY WINDS OF UP TO 45 MPH AND
HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
EXPECTED AT THIS TIME.

10/ARM

In the hours before

Local storm report, Jul 21, 6:54 PM CDT, 52 minutes before

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Special weather statement, Jul 21, 7:07 PM CDT, 39 minutes before

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Local storm report, Jul 21, 7:22 PM CDT, 24 minutes before

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Special weather statement, Jul 21, 7:25 PM CDT, 21 minutes before

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Special weather statement, Jul 21, 7:29 PM CDT, 17 minutes before

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Local storm report, Jul 21, 7:39 PM CDT, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 1:03 PM CDT	Severe Thunderstorm Warning	BMX	Winston	27 min
Jul 22, 1:17 PM CDT	Severe Thunderstorm Warning	BMX	Walker	28 min
Jul 22, 1:26 PM CDT	Severe Thunderstorm Warning	BMX	Randolph	34 min
Jul 22, 1:46 PM CDT	Severe Thunderstorm Warning	BMX	Winston	29 min
Jul 22, 1:53 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	37 min
Jul 22, 1:55 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Randolph	50 min
Jul 22, 2:03 PM CDT	Severe Thunderstorm Warning	BMX	Walker	27 min
Jul 22, 2:11 PM CDT	Severe Thunderstorm Warning	BMX	Lee	34 min
Jul 22, 2:12 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Shelby, Talladega	33 min
Jul 22, 2:22 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	38 min
Jul 22, 2:23 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	37 min
Jul 22, 2:25 PM CDT	Flash Flood Warning	BMX	Lee	95 min
Jul 22, 2:34 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa, Walker	26 min
Jul 22, 2:45 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Shelby, Talladega	15 min
Jul 22, 2:48 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	27 min
Jul 22, 2:56 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Tallapoosa	34 min
Jul 22, 3:01 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne	44 min
Jul 22, 3:08 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Tuscaloosa, Walker	37 min
Jul 22, 3:13 PM CDT	Severe Thunderstorm Warning	BMX	Marion	16 min
Jul 22, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Pickens, Tuscaloosa	31 min
Jul 22, 3:47 PM CDT	Severe Thunderstorm Warning	BMX	Coosa	28 min
Jul 22, 3:57 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	33 min
Jul 22, 4:17 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Tuscaloosa	28 min
Jul 22, 4:50 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	25 min
Jul 22, 5:01 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa, Talladega	29 min
Jul 22, 5:05 PM CDT	Severe Thunderstorm Warning	BMX	Marion	25 min
Jul 22, 5:27 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Shelby	24 min
Jul 22, 5:53 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa	37 min
Jul 22, 6:39 PM CDT	Severe Thunderstorm Warning	BMX	Marengo, Sumter	36 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2008 Every severe thunderstorm warning in 2008

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; radar from the NEXRAD Level II archive.