Alert archive / Tennessee / Tornado Watches in 1998

Tornado Watch 185

April 8, 199816 counties in Alabama; 9 counties in Mississippi; 34 counties in Tennessee

The Storm Prediction Center issued this tornado watch at Apr 8, 1998, 11:00 AM CDT for 16 counties in Alabama; 9 counties in Mississippi; 34 counties in Tennessee. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 8, 1998, 11:00 AM CDT (16:00 UTC)
Expired: Apr 8, 1998, 4:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 59 counties

Blount County, AL, Colbert County, AL, Cullman County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Walker County, AL, Winston County, AL, Chickasaw County, MS, Clay County, MS, Itawamba County, MS, Lee County, MS, Lowndes County, MS, Monroe County, MS, Prentiss County, MS, Tishomingo County, MS, Webster County, MS, Bedford County, TN, Bledsoe County, TN, Cannon County, TN, Cheatham County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hickman County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Overton County, TN, Putnam County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 8, 11:26 AM CDT	Severe Thunderstorm Warning	OHX	Wayne	49 min
Apr 8, 11:42 AM CDT	Severe Thunderstorm Warning	OHX	Smith, Wilson	48 min
Apr 8, 11:42 AM CDT	Severe Thunderstorm Warning	OHX	Hickman	33 min
Apr 8, 11:51 AM CDT	Severe Thunderstorm Warning	OHX	Lawrence	39 min
Apr 8, 12:03 PM CDT	Severe Thunderstorm Warning	OHX	Lewis	27 min
Apr 8, 12:09 PM CDT	Severe Thunderstorm Warning	OHX	Jackson	51 min
Apr 8, 12:17 PM CDT	Severe Thunderstorm Warning	OHX	Overton	28 min
Apr 8, 12:25 PM CDT	Tornado Warning	OHX	Giles, Lawrence	50 min
Apr 8, 12:39 PM CDT	Severe Thunderstorm Warning	OHX	Overton	36 min
Apr 8, 12:46 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Wilson	44 min
Apr 8, 12:47 PM CDT	Severe Thunderstorm Warning	MRX	Fentress, Scott	58 min
Apr 8, 1:00 PM CDT	Tornado Warning	MRX	Fentress, Scott	60 min
Apr 8, 1:00 PM CDT	Severe Thunderstorm Warning	OHX	Lincoln	45 min
Apr 8, 1:42 PM CDT	Severe Thunderstorm Warning	OHX	Franklin, Moore	48 min
Apr 8, 1:51 PM CDT	Severe Thunderstorm Warning	OHX	Grundy, Warren	39 min
Apr 8, 1:59 PM CDT	Severe Thunderstorm Warning	OHX	Sequatchie, Van Buren	31 min
Apr 8, 2:08 PM CDT	Severe Thunderstorm Warning	OHX	Bledsoe	52 min
Apr 8, 2:17 PM CDT	Tornado Warning	OHX	Bledsoe, Van Buren	43 min
Apr 8, 2:27 PM CDT	Severe Thunderstorm Warning	MRX	Scott	48 min

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.0 hours before the alert went out and 178 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: 880 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.8

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
Apr 8, 10:30 AM CDT	Tornado Watch	SPC	Autauga, Barbour, Bullock, Butler, Coffee, Conecuh and 18 more	6 hr
Apr 8, 1:45 PM CDT	Tornado Watch	SPC	Calhoun, Cherokee, Cleburne, DeKalb, Etowah, St. Clair	6 hr
Apr 8, 2:00 PM CDT	Tornado Watch	SPC	Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 31 more	6 hr
Apr 8, 6:30 PM CDT	Tornado Watch	SPC	Chambers, Lee, Randolph	7 hr
Apr 8, 7:45 AM CDT	Tornado Watch	SPC	Alcorn, Benton, Bolivar, Calhoun, Carroll, Coahoma and 23 more	6 hr
Apr 8, 2:00 AM CDT	Tornado Watch	SPC	Bedford, Cannon, Cheatham, Clay, Coffee, Davidson and 31 more	6 hr
Apr 8, 5:00 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Campbell, Claiborne, Cumberland, Fentress, Grainger and 7 more	5 hr
Apr 8, 5:30 PM CDT	Tornado Watch	SPC	Benton, Carroll, Cheatham, Chester, Crockett, Davidson and 31 more	7 hr
Apr 8, 6:30 PM CDT	Tornado Watch	SPC	Anderson, Bedford, Bledsoe, Blount, Bradley, Campbell and 52 more	7 hr

Nearby

Tornado Watches in Tennessee, 1998 Tornado Watches in Alabama, 1998 Tornado Watches in Mississippi, 1998 Every tornado watch in 1998

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.