Alert archive / Tennessee / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 43, NWS Huntsville, AL

July 8, 2016Franklin County, Moore County, Tennessee

NWS Huntsville, AL issued this severe thunderstorm warning at Jul 8, 2016, 7:42 PM CDT for Franklin County, Moore County, Tennessee. It was in force for 33 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 8, 2016, 7:42 PM CDT (00:42 UTC)
Expired: Jul 8, 2016, 8:15 PM CDT
In force: 33 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Franklin County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 35 km from the middle of the area, began a volume at 00:44 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 00:00Z, 0.7 hours before the alert went out and 107 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: 2167 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1438 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 6:18 PM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Jul 8, 6:18 PM CDT, 1 hour 24 minutes before

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Hazardous weather outlook, Jul 8, 3:16 PM CDT, 4 hours 26 minutes before

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In the hours before

Special weather statement, Jul 8, 7:25 PM CDT, 17 minutes before

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Special weather statement, Jul 8, 7:37 PM CDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
737 PM CDT FRI JUL 8 2016

TNZ076-096-097-090115-
MOORE TN-FRANKLIN TN-LINCOLN TN-
737 PM CDT FRI JUL 8 2016

...SIGNIFICANT WEATHER ADVISORY FOR MOORE...FRANKLIN AND EAST CENTRAL
LINCOLN COUNTIES UNTIL 815 PM CDT...

AT 737 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
LYNCHBURG...MOVING EAST AT 20 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
WINCHESTER...LYNCHBURG...DECHERD...ESTILL SPRINGS...COWAN...TIMS FORD
LAKE...HARMONY...ALTO...SMITHLAND AND LEXIE CROSSROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STRONG GUSTY WINDS WILL BE CAPABLE OF KNOCKING DOWN SMALL TREE
LIMBS...ALONG WITH OTHER SMALL UNSECURED ITEMS. SEEK SAFE SHELTER
UNTIL THIS STORM HAS PASSED.

&&

LAT...LON 3534 8603 3531 8600 3532 8598 3530 8594
      3500 8597 3514 8645 3522 8645 3532 8642
      3534 8641
TIME...MOT...LOC 0037Z 285DEG 18KT 3525 8638

The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 11:22 AM CDT	Special Weather Statement	HUN	Marshall	38 min
Jul 9, 1:19 PM CDT	Special Weather Statement	HUN	Marshall	41 min
Jul 9, 1:37 PM CDT	Special Weather Statement	HUN	DeKalb	23 min
Jul 9, 2:07 PM CDT	Special Weather Statement	HUN	DeKalb	23 min
Jul 9, 6:37 PM CDT	Special Weather Statement	HUN	Jackson	23 min
Jul 9, 6:57 PM CDT	Special Weather Statement	HUN	DeKalb	33 min
Jul 8, 7:25 PM CDT	Special Weather Statement	HUN	Lincoln, Moore	50 min
Jul 8, 7:37 PM CDT	Special Weather Statement	HUN	Franklin, Moore	38 min
Jul 8, 8:15 PM CDT	Special Weather Statement	HUN	Franklin, Lincoln, Moore	60 min
Jul 8, 8:27 PM CDT	Severe Thunderstorm Warning	HUN	Lincoln, Moore	33 min
Jul 8, 8:58 PM CDT	Special Weather Statement	HUN	Franklin	32 min
Jul 8, 9:01 PM CDT	Special Weather Statement	HUN	Lincoln	44 min
Jul 8, 9:45 PM CDT	Special Weather Statement	HUN	Lincoln, Moore	60 min
Jul 8, 10:09 PM CDT	Special Weather Statement	HUN	Franklin, Moore	51 min
Jul 9, 6:33 PM CDT	Special Weather Statement	HUN	Lincoln	27 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2016 Every severe thunderstorm warning in 2016

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.