Alert archive / Tennessee / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 247, NWS Memphis, TN

July 18, 20234 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Jul 18, 2023, 1:39 PM CDT for 4 counties in Tennessee. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 18, 2023, 1:39 PM CDT (18:39 UTC)
Expired: Jul 18, 2023, 2:30 PM CDT
In force: 51 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Benton County, TN, Henry County, TN, Obion County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 91 km from the middle of the area, began a volume at 18:40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 18, 8:59 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 6.7 hours before the alert went out and 176 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: 2404 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 897 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 18, 12:39 PM CDT, 1 hour earlier.

Area forecast discussion, Jul 18, 12:39 PM CDT, 1 hour before

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In the hours before

Special weather statement, Jul 18, 1:33 PM CDT, 6 minutes before

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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 2:49 AM CDT	Excessive Heat Warning	MEG	Coahoma, Quitman, Tunica	17 hr
Jul 18, 2:49 AM CDT	Heat Advisory	MEG	Calhoun, DeSoto, Lafayette, Marshall, Panola, Tallahatchie and 2 more	17 hr
Jul 18, 3:01 PM CDT	Excessive Heat Warning	MEG	Coahoma, DeSoto, Panola, Quitman, Tallahatchie, Tate and 1 more	29 hr
Jul 18, 3:01 PM CDT	Heat Advisory	MEG	Alcorn, Benton, Calhoun, Chickasaw, DeSoto, Itawamba and 12 more	29 hr
Jul 18, 5:56 PM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Marshall	49 min
Jul 18, 6:32 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Marshall, Tippah, Union	43 min
Jul 18, 6:37 PM CDT	Severe Thunderstorm Warning	MEG	Tishomingo	38 min
Jul 17, 7:48 PM CDT	Special Weather Statement	MEG	Madison	27 min
Jul 17, 8:44 PM CDT	Special Weather Statement	MEG	Madison	31 min
Jul 17, 9:27 PM CDT	Special Weather Statement	MEG	Carroll	33 min
Jul 18, 1:33 PM CDT	Special Weather Statement	MEG	Lake	27 min
Jul 18, 1:47 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Gibson, Lake, Obion, Weakley	43 min
Jul 18, 2:18 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Crockett, Dyer, Gibson, Obion, Weakley	42 min
Jul 18, 2:24 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll, Henry, Weakley	51 min
Jul 18, 2:52 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll, Chester, Crockett, Decatur, Gibson and 3 more	38 min
Jul 18, 3:19 PM CDT	Special Weather Statement	MEG	Crockett, Madison	26 min
Jul 18, 3:27 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll, Chester, Decatur, Hardin, Henderson	48 min
Jul 18, 4:19 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson	24 min
Jul 18, 4:31 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Dyer, Haywood, Lauderdale	44 min
Jul 18, 5:04 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Lauderdale, Shelby, Tipton	41 min
Jul 18, 5:07 PM CDT	Severe Thunderstorm Warning	MEG	Tipton	38 min
Jul 18, 5:23 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Fayette, Hardeman, Haywood, Madison	25 min
Jul 18, 5:34 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Lauderdale, Shelby, Tipton	41 min
Jul 18, 6:09 PM CDT	Special Weather Statement	MEG	Fayette	36 min
Jul 18, 6:31 PM CDT	Areal Flood Advisory	MEG	Carroll, Chester, Crockett, Decatur, Gibson, Haywood and 2 more	3 hr
Jul 18, 3:41 PM CDT	Special Weather Statement	MEG	Clay	34 min
Jul 18, 4:03 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene, Mississippi	42 min
Jul 18, 4:33 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Greene, Poinsett	42 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2023 Every severe thunderstorm warning in 2023

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; radar from the NEXRAD Level II archive.