Alert archive / Alabama / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 802

July 22, 200322 counties in Alabama; Clay County, Quitman County, Georgia; 4 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Jul 22, 2003, 2:40 PM CDT for 22 counties in Alabama; Clay County, Quitman County, Georgia; 4 counties in Mississippi. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jul 22, 2003, 2:40 PM CDT (19:40 UTC)
Expired: Jul 22, 2003, 8:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 28 counties

Baldwin County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Henry County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Washington County, AL, Wilcox County, AL, Clay County, GA, Quitman County, GA, George County, MS, Greene County, MS, Jackson County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 128 km from the middle of the area, began a volume at 19:43 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.

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jul 22, 3:48 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	27 min
Jul 22, 3:56 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	34 min
Jul 22, 3:59 PM CDT	Flash Flood Warning	MOB	Monroe	76 min
Jul 22, 4:04 PM CDT	Severe Thunderstorm Warning	TAE	Dale	26 min
Jul 22, 6:57 PM CDT	Tornado Warning	LIX	Jackson	33 min
Jul 22, 7:23 PM CDT	Flash Flood Warning	MOB	Baldwin	112 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 7.7 hours before the alert went out and 143 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: 2360 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 767 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -59 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

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 6:40 AM CDT	Severe Thunderstorm Watch	SPC	Colbert, Franklin, Lauderdale, Lawrence, Marion, Winston	3 hr
Jul 22, 11:31 AM CDT	Mesoscale Discussion	SPC	Bullock, Calhoun, Chambers, Chilton, Clay, Cleburne and 8 more	119 min
Jul 22, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Calhoun, Chambers, Cherokee, Chilton and 19 more	5 hr
Jul 22, 1:15 PM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bullock, Butler, Chambers, Coffee and 18 more	2 hr
Jul 22, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	Choctaw	6 hr
Jul 22, 6:21 PM CDT	Mesoscale Discussion	SPC	Washington	54 min
Jul 22, 2:10 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Bleckley, Butts, Chattahoochee, Clarke and 37 more	3 hr
Jul 22, 2:59 PM CDT	Mesoscale Discussion	SPC	Appling, Bacon, Ben Hill, Bleckley, Bulloch, Burke and 31 more	2 hr
Jul 22, 2:49 AM CDT	Mesoscale Discussion	SPC	Coahoma, DeSoto, Quitman, Tunica	116 min
Jul 22, 3:45 AM CDT	Severe Thunderstorm Watch	SPC	Calhoun, Chickasaw, Coahoma, DeSoto, Lafayette, Marshall and 6 more	5 hr
Jul 22, 4:47 AM CDT	Mesoscale Discussion	SPC	Coahoma, Quitman, Tate, Tunica	118 min
Jul 22, 6:29 AM CDT	Mesoscale Discussion	SPC	Alcorn, Benton, DeSoto, Marshall, Prentiss, Tippah and 2 more	91 min
Jul 22, 1:42 PM CDT	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Covington, Forrest and 18 more	2 hr

Nearby

Severe Thunderstorm Watches in Alabama, 2003 Severe Thunderstorm Watches in Mississippi, 2003 Severe Thunderstorm Watches in Georgia, 2003 Every severe thunderstorm watch in 2003

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.