Alert archive / Tennessee / Mesoscale Discussions in 2009

Mesoscale Discussion 427

April 10, 20094 states

The Storm Prediction Center issued this mesoscale discussion at Apr 10, 2009, 8:22 AM CDT for 4 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Apr 10, 2009, 8:22 AM CDT (13:22 UTC)
Expired: Apr 10, 2009, 9:45 AM CDT
In force: 83 min
Issued by: the Storm Prediction Center

All 62 counties

Lauderdale County, AL, Calloway County, KY, Marshall County, KY, Todd County, KY, Trigg County, KY, Alcorn County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Marshall County, MS, Montgomery County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Webster County, MS, Yalobusha County, MS, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Shelby County, TN, Stewart County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN

The radar

The Memphis radar (KNQA), 134 km from the middle of the area, began a volume at 13:26 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.

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
Apr 10, 1:24 AM CDT	Mesoscale Discussion	SPC	Colbert, Fayette, Franklin, Lamar, Lauderdale, Marion and 1 more	96 min
Apr 10, 1:43 AM CDT	Tornado Watch	SPC	Blount, Colbert, Cullman, Fayette, Franklin, Greene and 12 more	5 hr
Apr 10, 4:25 AM CDT	Mesoscale Discussion	SPC	Blount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 13 more	95 min
Apr 10, 11:14 AM CDT	Mesoscale Discussion	SPC	Colbert, Franklin, Jackson, Lauderdale, Lawrence, Limestone and 4 more	76 min
Apr 10, 11:23 AM CDT	Tornado Watch PDS	SPC	Bibb, Blount, Calhoun, Cherokee, Cleburne, Colbert and 25 more	8 hr
Apr 10, 12:58 PM CDT	Mesoscale Discussion	SPC	Colbert, Cullman, Fayette, Franklin, Jackson, Lamar and 8 more	92 min
Apr 10, 2:29 PM CDT	Mesoscale Discussion	SPC	Cleburne	91 min
Apr 10, 2:39 PM CDT	Tornado Watch PDS	SPC	Autauga, Barbour, Bullock, Calhoun, Chambers, Cherokee and 19 more	8 hr
Apr 10, 3:43 PM CDT	Mesoscale Discussion	SPC	Blount, Calhoun, Cherokee, Cleburne, DeKalb, Etowah and 4 more	92 min
Apr 10, 6:34 PM CDT	Mesoscale Discussion	SPC	Autauga, Calhoun, Chambers, Chilton, Clay, Cleburne and 9 more	56 min
Apr 9, 10:52 PM CDT	Severe Thunderstorm Watch	SPC	Ballard, Calloway, Carlisle, Crittenden, Fulton, Graves and 5 more	4 hr
Apr 10, 12:50 AM CDT	Mesoscale Discussion	SPC	Ballard, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 26 more	85 min
Apr 10, 1:22 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Barren, Breckinridge, Bullitt, Butler, Caldwell and 23 more	4 hr
Apr 10, 3:33 AM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Breckinridge, Bullitt, Butler and 28 more	57 min
Apr 10, 8:53 AM CDT	Tornado Watch	SPC	Adair, Allen, Anderson, Barren, Bourbon, Boyle and 64 more	7 hr
Apr 10, 10:30 AM CDT	Mesoscale Discussion	SPC	Anderson, Bourbon, Boyle, Breckinridge, Bullitt, Clark and 14 more	60 min
Apr 10, 1:26 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 87 more	64 min
Apr 10, 1:51 PM CDT	Tornado Watch	SPC	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	6 hr
Apr 10, 2:56 PM CDT	Mesoscale Discussion	SPC	Breathitt, Clark, Elliott, Estill, Floyd, Jackson and 12 more	64 min
Apr 10, 3:06 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Breckinridge, Bullitt, Edmonson and 15 more	54 min
Apr 10, 3:42 PM CDT	Mesoscale Discussion	SPC	Breathitt, Clay, Elliott, Floyd, Harlan, Johnson and 14 more	63 min
Apr 10, 6:53 PM CDT	Mesoscale Discussion	SPC	Harlan, Letcher	67 min
Apr 9, 10:48 PM CDT	Tornado Watch	SPC	Bolivar, Carroll, Coahoma, DeSoto, Grenada, Holmes and 17 more	4 hr

Nearby

Mesoscale Discussions in Tennessee, 2009 Mesoscale Discussions in Mississippi, 2009 Mesoscale Discussions in Kentucky, 2009 Every mesoscale discussion in 2009

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.