Alert archive / Alabama / Mesoscale Discussions in 2006

Mesoscale Discussion 828

May 10, 200617 counties in Alabama

The Storm Prediction Center issued this mesoscale discussion at May 10, 2006, 12:42 PM CDT for 17 counties in Alabama. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: May 10, 2006, 12:42 PM CDT (17:42 UTC)
Expired: May 10, 2006, 2:15 PM CDT
In force: 93 min
Issued by: the Storm Prediction Center

Counties Barbour County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lowndes County, AL, Marengo County, AL, Monroe County, AL, Pike County, AL, Wilcox County, AL

The watches that followed

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

Tornado Watch 335May 10, 1:45 PM CDT

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.7 hours before the alert went out and 162 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: 379 J/kg
Mixed-layer CIN: -268 J/kg
Mixed-layer LCL: 531 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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
May 9, 9:54 PM CDT	Mesoscale Discussion	SPC	Baldwin, Barbour, Butler, Clarke, Coffee, Conecuh and 13 more	2 hr
May 10, 2:05 AM CDT	Mesoscale Discussion	SPC	Colbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 3 more	55 min
May 10, 2:24 AM CDT	Severe Thunderstorm Watch	SPC	Colbert, Fayette, Franklin, Greene, Hale, Lamar and 5 more	5 hr
May 10, 4:01 AM CDT	Mesoscale Discussion	SPC	Fayette, Greene, Hale, Lamar, Pickens, Sumter and 1 more	89 min
May 10, 5:47 AM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Chilton and 30 more	88 min
May 10, 6:32 AM CDT	Severe Thunderstorm Watch	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 25 more	6 hr
May 10, 8:31 AM CDT	Mesoscale Discussion	SPC	Fayette, Greene, Lamar, Pickens, Tuscaloosa	89 min
May 10, 9:48 AM CDT	Severe Thunderstorm Watch	SPC	Colbert, Cullman, Fayette, Franklin, Greene, Hale and 12 more	5 hr
May 10, 12:21 PM CDT	Mesoscale Discussion	SPC	Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 18 more	84 min
May 10, 12:31 PM CDT	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 18 more	5 hr
May 10, 1:45 PM CDT	Tornado Watch	SPC	Autauga, Baldwin, Barbour, Bullock, Butler, Choctaw and 26 more	7 hr
May 10, 2:42 PM CDT	Mesoscale Discussion	SPC	Choctaw, Clarke, Marengo, Sumter, Washington, Wilcox	2 hr
May 10, 3:23 PM CDT	Mesoscale Discussion	SPC	Barbour, Chambers, Lee, Macon, Russell	2 hr

Nearby

Mesoscale Discussions in Alabama, 2006 Every mesoscale discussion in 2006

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.