Alert archive / Tennessee / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 89

April 4, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at Apr 4, 2003, 8:00 PM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 4, 2003, 8:00 PM CST (02:00 UTC)
Expired: Apr 5, 2003, 1:00 AM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 44 counties

Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Jackson County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Dunklin County, MO, Pemiscot County, MO, DeSoto County, MS, Marshall County, MS, Tate County, MS, Tunica County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Stewart County, TN, Tipton County, TN, Weakley County, TN

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 4, 8:32 PM CST	Severe Thunderstorm Warning	MEG	Greene	28 min
Apr 4, 8:37 PM CST	Severe Thunderstorm Warning	MEG	Greene	23 min
Apr 4, 9:03 PM CST	Severe Thunderstorm Warning	MEG	Craighead	42 min
Apr 4, 9:22 PM CST	Severe Thunderstorm Warning	MEG	Dunklin, Pemiscot	23 min
Apr 4, 9:33 PM CST	Severe Thunderstorm Warning	MEG	Lake, Obion	42 min
Apr 4, 10:19 PM CST	Severe Thunderstorm Warning	MEG	Lauderdale	26 min

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, 2.0 hours before the alert went out and 78 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: 526 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1487 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 4, 10:01 PM CST	Mesoscale Discussion	SPC	Crittenden, Lee, Monroe, Phillips, St. Francis	89 min
Apr 5, 11:05 AM CST	Mesoscale Discussion	SPC	Hancock, Harrison	3 hr
Apr 4, 7:07 PM CST	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Mississippi, New Madrid, Perry and 4 more	83 min

Nearby

Severe Thunderstorm Watches in Tennessee, 2003 Severe Thunderstorm Watches in Arkansas, 2003 Severe Thunderstorm Watches in Mississippi, 2003 Every severe thunderstorm watch 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.