Alert archive / Tennessee / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 14, NWS Huntsville, AL

February 5, 2020Franklin County, Lincoln County, Moore County, Tennessee

NWS Huntsville, AL issued this severe thunderstorm warning at Feb 5, 2020, 6:29 PM CST for Franklin County, Lincoln County, Moore County, Tennessee. It was in force for 46 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: Feb 5, 2020, 6:29 PM CST (00:29 UTC)
Expired: Feb 5, 2020, 7:15 PM CST
In force: 46 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Franklin County, TN, Lincoln County, TN, Moore County, TN

The radar

The Northeast Alabama radar (KHTX), 38 km from the middle of the area, began a volume at 00:29 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
Feb 5, 4:25 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.5 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: 47 J/kg
Mixed-layer CIN: -159 J/kg
Mixed-layer LCL: 481 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 207 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Feb 5, 5:11 PM CST, 1 hour 18 minutes earlier.

Area forecast discussion, Feb 5, 5:11 PM CST, 1 hour 18 minutes before

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Hazardous weather outlook, Feb 5, 5:47 PM CST, 42 minutes before

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In the hours before

Local storm report, Feb 5, 2:47 PM CST, 3 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HUNTSVILLE AL
247 PM CST WED FEB 5 2020

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

0140 PM     FLOOD            2 ENE LYNCHBURG         35.29N 86.32W
02/05/2020                   MOORE              TN   EMERGENCY MNGR

            EMA REPORTS SEVERAL ROADS OVER-TOPPED WITH
            WATER IN MOORE CO.

&&

TPB

Special weather statement, Feb 5, 4:55 PM CST, 1 hour 34 minutes before

Special Weather Statement
National Weather Service Huntsville AL
455 PM CST Wed Feb 5 2020

ALZ003-052345-
Franklin AL-
455 PM CST Wed Feb 5 2020

...SIGNIFICANT WEATHER ADVISORY FOR FRANKLIN COUNTY UNTIL 545 PM
CST...

At 455 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from Belmont to near New Salem. Movement was east at
60 mph.

Penny size hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Russellville, Red Bay, Phil Campbell, Belgreen, Vina, Hodges, Cedar
Creek Reservoir, Atwood, Duketon and Rockwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Very heavy rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3450 8815 3457 8769 3431 8769 3431 8795
      3432 8817
TIME...MOT...LOC 2255Z 250DEG 51KT 3449 8821 3412 8829

30

Special weather statement, Feb 5, 5:41 PM CST, 48 minutes before

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Local storm report, Feb 5, 6:01 PM CST, 28 minutes before

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Local storm report, Feb 5, 6:24 PM CST, 5 minutes before

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Local storm report, Feb 5, 6:26 PM CST, 3 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
Feb 5, 6:32 PM CST	Special Weather Statement	HUN	Franklin, Lawrence, Limestone, Madison, Morgan	43 min
Feb 5, 7:08 PM CST	Areal Flood Warning	HUN	Jackson, Lawrence, Limestone, Madison, Morgan	9 hr
Feb 5, 7:18 PM CST	Special Weather Statement	HUN	Cullman, Morgan	42 min
Feb 5, 7:57 PM CST	Special Weather Statement	HUN	Cullman, Jackson, Marshall	48 min
Feb 5, 8:52 PM CST	Special Weather Statement	HUN	Jackson	23 min
Feb 5, 9:20 PM CST	Areal Flood Warning	HUN	Cullman, DeKalb, Jackson, Madison, Marshall, Morgan	3 hr
Feb 5, 10:18 PM CST	Flash Flood Warning	HUN	Limestone, Madison	104 min
Feb 5, 10:36 PM CST	River Flood Warning	HUN	Colbert, Lauderdale	17 days
Feb 5, 10:42 PM CST	River Flood Warning	HUN	Madison, Marshall, Morgan	16 days
Feb 5, 11:52 PM CST	Areal Flood Warning	HUN	Cullman, DeKalb, Jackson, Lawrence, Limestone, Madison and 2 more	33 hr
Feb 6, 1:10 AM CST	Special Weather Statement	HUN	DeKalb	35 min
Feb 6, 7:43 AM CST	Flash Flood Warning	HUN	DeKalb	3 hr
Feb 6, 8:10 AM CST	Areal Flood Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence	10 hr
Feb 6, 3:25 PM CST	Areal Flood Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence	12 hr
Feb 5, 7:13 PM CST	Special Weather Statement	HUN	Franklin, Lincoln, Moore	47 min
Feb 5, 7:56 PM CST	Special Weather Statement	HUN	Franklin	49 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2020 Every severe thunderstorm warning in 2020

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.