Alert archive / Tennessee / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 273, NWS Memphis, TN

August 17, 2014Benton County, Carroll County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Aug 17, 2014, 2:51 PM CDT for Benton County, Carroll County, Tennessee. It was in force for 39 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: Aug 17, 2014, 2:51 PM CDT (19:51 UTC)
Expired: Aug 17, 2014, 3:30 PM CDT
In force: 39 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Benton County, TN, Carroll County, TN

The radar

The Ft Campbell radar (KHPX), 118 km from the middle of the area, began a volume at 19:51 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.9 hours before the alert went out and 150 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: 461 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1090 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 Aug 17, 12:13 PM CDT, 2 hours 38 minutes earlier.

Area forecast discussion, Aug 17, 12:13 PM CDT, 2 hours 38 minutes before

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Hazardous weather outlook, Aug 17, 4:43 AM CDT, 10 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
443 AM CDT SUN AUG 17 2014

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-181145-
ALCORN-BENTON MS-BENTON TN-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-
COAHOMA-CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-
DUNKLIN-DYER-FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-
HENDERSON-HENRY-ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-
LEE AR-LEE MS-MADISON-MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-
PANOLA-PEMISCOT-PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-
RANDOLPH-SHELBY-ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-
TISHOMINGO-TUNICA-UNION-WEAKLEY-YALOBUSHA-
443 AM CDT SUN AUG 17 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

A FEW STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS THE
MID SOUTH TODAY. THE HIGHEST POTENTIAL FOR STRONG TO SEVERE STORMS
WILL BE ACROSS NORTHERN PORTIONS OF THE MID SOUTH. THE PRIMARY
THREATS WILL BE LOCALIZED DAMAGING WINDS ALONG WITH HEAVY RAINFALL
AND LOCALIZED FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

LIMITED SPOTTER ACTIVATION MAY BE NEEDED ACROSS THE NORTHERN
PORTIONS OF THE MID SOUTH TODAY.

JLH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 2:58 PM CDT	Tornado Warning	MEG	Benton	15 min
Aug 17, 3:01 PM CDT	Flash Flood Warning	MEG	Benton, Carroll, Henry	3 hr
Aug 17, 3:30 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Carroll	45 min
Aug 17, 4:18 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Gibson, Weakley	42 min
Aug 17, 4:23 PM CDT	Flash Flood Warning	MEG	Carroll, Gibson, Weakley	2 hr
Aug 17, 5:47 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Gibson, Madison	31 min
Aug 17, 6:27 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Fayette, Hardeman, Haywood	48 min
Aug 17, 6:28 PM CDT	Severe Thunderstorm Warning	MEG	Madison	19 min
Aug 17, 6:30 PM CDT	Severe Thunderstorm Warning	MEG	Lauderdale	45 min
Aug 17, 6:34 PM CDT	Flash Flood Warning	MEG	Crockett, Dyer, Gibson, Haywood, Lauderdale, Madison	116 min
Aug 17, 9:29 AM CDT	Flash Flood Warning	MEG	Coahoma, Panola, Quitman	3 hr
Aug 17, 11:07 AM CDT	Flash Flood Warning	MEG	Alcorn, Prentiss, Tippah	3 hr
Aug 17, 4:03 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Phillips	25 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2014 Every severe thunderstorm warning in 2014

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.