Alert archive / Alabama / Mesoscale Discussions in 2012

Mesoscale Discussion 1873

September 3, 201222 counties in Alabama; 7 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Sep 3, 2012, 3:25 PM CDT for 22 counties in Alabama; 7 counties in Mississippi. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Sep 3, 2012, 3:25 PM CDT (20:25 UTC)
Expired: Sep 3, 2012, 4:30 PM CDT
In force: 65 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 29 counties

Autauga County, AL, Barbour County, AL, Bibb County, AL, Bullock County, AL, Butler County, AL, Chilton County, AL, Choctaw County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Sumter County, AL, Wilcox County, AL, Choctaw County, MS, Kemper County, MS, Lauderdale County, MS, Neshoba County, MS, Noxubee County, MS, Oktibbeha County, MS, Winston County, MS

The radar

The Birmingham radar (KBMX), 98 km from the middle of the area, began a volume at 20:27 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.

Tornado Watch 612Sep 3, 3:50 PM CDT

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
Sep 2, 7:13 PM CDT	Mesoscale Discussion	SPC	Colbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 3 more	62 min
Sep 2, 8:43 PM CDT	Mesoscale Discussion	SPC	Calhoun, Cherokee, Cleburne, DeKalb, Etowah, St. Clair	62 min
Sep 2, 9:48 PM CDT	Mesoscale Discussion	SPC	Fayette, Lamar, Marion, Walker, Winston	57 min
Sep 3, 12:29 PM CDT	Mesoscale Discussion	SPC	Barbour, Bullock, Butler, Clarke, Coffee, Conecuh and 11 more	61 min
Sep 3, 3:46 PM CDT	Tornado Watch	SPC	Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 19 more	7 hr
Sep 3, 6:55 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 19 more	65 min

Nearby

Mesoscale Discussions in Alabama, 2012 Mesoscale Discussions in Mississippi, 2012 Every mesoscale discussion in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.