Alert archive / Alabama / Mesoscale Discussions in 2003

Mesoscale Discussion 1214

June 2, 200323 counties in Alabama

The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2003, 9:19 PM CDT for 23 counties in Alabama. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Jun 2, 2003, 9:19 PM CDT (02:19 UTC)
Expired: Jun 2, 2003, 11:15 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 23 counties

Autauga County, AL, Bibb County, AL, Chilton County, AL, Choctaw County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lowndes County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Wilcox County, AL

The radar

The Birmingham radar (KBMX), 74 km from the middle of the area, began a volume at 02:19 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 468Jun 2, 9:40 PM CDT

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.3 hours before the alert went out and 268 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: 15 J/kg
Mixed-layer CIN: -190 J/kg
Mixed-layer LCL: 1648 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 2, 9:40 PM CDT	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 34 more	5 hr
Jun 3, 1:36 AM CDT	Mesoscale Discussion	SPC	Autauga, Baldwin, Bullock, Butler, Calhoun, Chambers and 21 more	114 min

Nearby

Mesoscale Discussions in Alabama, 2003 Every mesoscale discussion 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.