Alert archive / Tennessee / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 140, NWS Huntsville, AL

October 14, 2014Franklin County, Tennessee

NWS Huntsville, AL issued this severe thunderstorm warning at Oct 14, 2014, 6:26 AM CDT for Franklin County, Tennessee. It was in force for 34 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: Oct 14, 2014, 6:26 AM CDT (11:26 UTC)
Expired: Oct 14, 2014, 7:00 AM CDT
In force: 34 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

County Franklin County, TN

The radar

The Northeast Alabama radar (KHTX), 25 km from the middle of the area, began a volume at 11:25 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, 11.4 hours before the alert went out and 118 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: 187 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1109 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 389 m²/s²
0-3 km storm-relative helicity: 568 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.3

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 Oct 14, 3:48 AM CDT, 2 hours 38 minutes earlier.

Area forecast discussion, Oct 14, 3:48 AM CDT, 2 hours 38 minutes before

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Hazardous weather outlook, Oct 14, 5:22 AM CDT, 1 hour 4 minutes before

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In the hours before

Local storm report, Oct 14, 12:59 AM CDT, 5 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1259 AM CDT TUE OCT 14 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0729 PM     TSTM WND DMG     5 SSW FLORENCE          34.73N 87.70W
10/13/2014                   COLBERT            AL   EMERGENCY MNGR

            TREE DOWN ON VEHICLE ON EAST 4TH STEET.

&&

JMS

Local storm report, Oct 14, 2:21 AM CDT, 4 hours 5 minutes before

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Local storm report, Oct 14, 2:22 AM CDT, 4 hours 4 minutes before

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Special weather statement, Oct 14, 5:34 AM CDT, 52 minutes before

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Special weather statement, Oct 14, 6:14 AM CDT, 12 minutes before

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Special weather statement, Oct 14, 6:17 AM CDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 7:17 PM CDT	Special Weather Statement	HUN	Colbert, Lauderdale, Lawrence	43 min
Oct 13, 7:24 PM CDT	Tornado Warning	HUN	Colbert, Lauderdale	17 min
Oct 13, 7:42 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lawrence	33 min
Oct 13, 7:50 PM CDT	Tornado Warning	HUN	Colbert, Lawrence	25 min
Oct 13, 8:06 PM CDT	Tornado Warning	HUN	Lauderdale, Lawrence, Limestone	24 min
Oct 13, 8:30 PM CDT	Special Weather Statement	HUN	Limestone, Morgan	30 min
Oct 13, 8:36 PM CDT	Special Weather Statement	HUN	Cullman	39 min
Oct 13, 8:47 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Morgan	28 min
Oct 13, 8:58 PM CDT	Special Weather Statement	HUN	Cullman	32 min
Oct 13, 9:22 PM CDT	Special Weather Statement	HUN	Madison, Morgan	23 min
Oct 13, 9:40 PM CDT	Special Weather Statement	HUN	Madison	35 min
Oct 13, 9:59 PM CDT	Flash Flood Warning	HUN	Limestone	4 hr
Oct 13, 10:04 PM CDT	Special Weather Statement	HUN	Marshall	41 min
Oct 13, 10:23 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	37 min
Oct 13, 11:07 PM CDT	Special Weather Statement	HUN	DeKalb, Jackson	38 min
Oct 13, 11:43 PM CDT	Special Weather Statement	HUN	DeKalb	47 min
Oct 14, 12:32 AM CDT	Severe Thunderstorm Warning	HUN	DeKalb	28 min
Oct 14, 1:12 AM CDT	Flash Flood Warning	HUN	DeKalb, Jackson	3 hr
Oct 14, 2:00 AM CDT	Areal Flood Warning	HUN	Limestone, Madison, Morgan	3 hr
Oct 14, 3:57 AM CDT	Areal Flood Warning	HUN	DeKalb, Jackson	6 hr
Oct 14, 5:34 AM CDT	Special Weather Statement	HUN	Madison	41 min
Oct 14, 5:56 AM CDT	Areal Flood Warning	HUN	Madison	3 hr
Oct 14, 6:17 AM CDT	Special Weather Statement	HUN	Jackson	43 min
Oct 13, 10:03 PM CDT	Flash Flood Warning	HUN	Lincoln	4 hr
Oct 14, 6:14 AM CDT	Special Weather Statement	HUN	Franklin	46 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.