Alert archive / Tennessee / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 108

April 22, 20044 states

The Storm Prediction Center issued this severe thunderstorm watch at Apr 22, 2004, 11:40 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 22, 2004, 11:40 PM CDT (04:40 UTC)
Expired: Apr 23, 2004, 6:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 31 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, Woodruff County, AR, Fulton County, KY, Graves County, KY, Hickman County, KY, Butler County, MO, Dunklin County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 22, 11:45 PM CDT	Flash Flood Warning	MEG	Lawrence	2 hr
Apr 22, 11:50 PM CDT	Severe Thunderstorm Warning	MEG	Lawrence	40 min
Apr 23, 12:01 AM CDT	Severe Thunderstorm Warning	MEG	Dunklin	44 min
Apr 23, 12:32 AM CDT	Flash Flood Warning	MEG	Dunklin, Pemiscot	118 min
Apr 23, 12:39 AM CDT	Severe Thunderstorm Warning	MEG	Greene	51 min
Apr 23, 1:29 AM CDT	Severe Thunderstorm Warning	MEG	Pemiscot	31 min
Apr 23, 1:31 AM CDT	Flash Flood Warning	MEG	Greene, Lawrence, Randolph	59 min
Apr 23, 2:27 AM CDT	Flash Flood Warning	MEG	Greene	2 hr

Discussions around it

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 4.7 hours before the alert went out and 100 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: 2009 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 13.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 7:10 PM CDT	Mesoscale Discussion	SPC	Boone, Franklin, Howard, Johnson, Logan, Madison and 5 more	35 min
Apr 22, 7:50 PM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Crawford, Franklin and 10 more	4 hr
Apr 22, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more	6 hr
Apr 22, 10:52 PM CDT	Mesoscale Discussion	SPC	Conway, Pope, Searcy, Stone, Van Buren	53 min
Apr 22, 11:25 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more	65 min
Apr 23, 12:54 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more	96 min
Apr 23, 3:12 AM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 5 more	93 min
Apr 23, 7:33 AM CDT	Mesoscale Discussion	SPC	Craighead, Crittenden, Cross, Jackson, Lee, Poinsett and 2 more	87 min
Apr 23, 10:37 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Fulton, Izard and 3 more	113 min
Apr 23, 2:10 PM CDT	Severe Thunderstorm Watch	SPC	Benton, Crawford, Sebastian, Washington	6 hr
Apr 23, 6:01 PM CDT	Mesoscale Discussion	SPC	Crawford, Scott, Sebastian	59 min
Apr 23, 12:51 PM CDT	Mesoscale Discussion	SPC	Barton, Bates, Benton, Camden, Cedar, Dade and 12 more	114 min
Apr 23, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Barton, Cedar, Dade, Greene, Hickory and 8 more	5 hr
Apr 23, 11:09 AM CDT	Mesoscale Discussion	SPC	Bedford, Bledsoe, Cannon, Cheatham, Coffee, Cumberland and 34 more	2 hr

Nearby

Severe Thunderstorm Watches in Tennessee, 2004 Severe Thunderstorm Watches in Arkansas, 2004 Severe Thunderstorm Watches in Missouri, 2004 Every severe thunderstorm watch in 2004

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.