Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

October 6, 2021Cannon County, Tennessee

NWS Nashville, TN issued this special weather statement at Oct 6, 2021, 10:57 PM CDT for Cannon 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 outline as issued.

The facts

Issued: Oct 6, 2021, 10:57 PM CDT (03:57 UTC)
Expired: Oct 6, 2021, 11:30 PM CDT
In force: 33 min
Issued by: NWS Nashville, TN
Hail: 0.00 in
Wind: 40

County Cannon County, TN

The radar

The Nashville radar (KOHX), 63 km from the middle of the area, began a volume at 04:02 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, 4.0 hours before the alert went out and 55 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: 595 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 871 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

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

NWS Nashville, TN wrote its last area forecast discussion before this special weather statement went out at Oct 6, 10:48 PM CDT, 9 minutes earlier.

Area forecast discussion, Oct 6, 10:48 PM CDT, 9 minutes before

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Hazardous weather outlook, Oct 6, 5:01 AM CDT, 17 hours 56 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
501 AM CDT Wed Oct 6 2021

TNZ005>011-023>034-056>066-075-077>080-093>095-071000-
Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston-
Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson-
Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury-
Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee-
Warren-Grundy-Van Buren-Wayne-Lawrence-Giles-
501 AM CDT Wed Oct 6 2021

This Hazardous Weather Outlook is for Middle Tennessee.

.DAY ONE...Today and tonight.

A flash flood watch is in effect through tonight for southern
locations approaching Tennessee/Alabama Border Region and across
central and southern portions of Cumberland Plateau Region.
Rainfall amounts of one to three inches, with locally higher
amounts, will be possible.

Isolated strong to severe thunderstorms will be possible this
afternoon and evening across most of Middle Tennessee. With
any strong to severe thunderstorms that do develop, main threats
will be strong to damaging winds and potentially large hail.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Showers and scattered thunderstorms continuing across eastern
portions of mid state region could cause continuing flooding
concerns across this area through at least Thursday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed. Please relay any
information about observed severe weather to the NWS
while following all local, state, and CDC guidelines.

JB Wright

In the hours before

Local storm report, Oct 6, 9:46 PM CDT, 1 hour 11 minutes before

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Local storm report, Oct 6, 9:54 PM CDT, 1 hour 3 minutes before

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Local storm report, Oct 6, 10:00 PM CDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1000 PM CDT WED OCT 06 2021

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

0959 PM     FLASH FLOOD      WAVERLY                 36.09N  87.79W
10/06/2021                   HUMPHREYS          TN   TRAINED SPOTTER

            WATER FLOWING OVER HIGHWAY 70 IN WAVERLY

&&

EVENT NUMBER OHX2100692

BW

Local storm report, Oct 6, 10:35 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1035 PM CDT WED OCT 06 2021

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

1030 PM     FLASH FLOOD      SHELBYVILLE             35.49N  86.45W
10/06/2021                   BEDFORD            TN   NEWSPAPER

            MADISON STREET NEAR FIRST BANK AND LANE PARKWAY NEAR
            POLICE HQ FLOODED AND IMPASSABLE

&&

EVENT NUMBER OHX2100693

SHAMBURGER

Local storm report, Oct 6, 10:51 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
1051 PM CDT WED OCT 06 2021

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

1048 PM     FLASH FLOOD      4 S WAVERLY             36.03N  87.79W
10/06/2021                   HUMPHREYS          TN   EMERGENCY MNGR

            SEVERAL ROADS ARE FLOODED SOUTH OF WAVERLY, INCLUDING
            PUMPKIN CREEK, FORKS RIVER ROAD, AND SPAN LOOP.

&&

EVENT NUMBER OHX2100694

BW

Special weather statement, Oct 6, 10:57 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Nashville TN
1057 PM CDT Wed Oct 6 2021

TNZ028-062-063-077-070430-
Cannon TN-Rutherford TN-Wilson TN-Coffee TN-
1057 PM CDT Wed Oct 6 2021

...A strong thunderstorm will impact portions of southeastern
Rutherford, northwestern Coffee, south central Wilson and Cannon
Counties through 1130 PM CDT...

At 1057 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Woodbury, moving northeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Murfreesboro, Woodbury, Auburntown, Lascassas, Bradyville, Milton and
Readyville.

This includes Interstate 24 between mile markers 80 and 89.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3559 8613 3580 8645 3606 8621 3586 8590
TIME...MOT...LOC 0357Z 205DEG 20KT 3575 8622

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Shamburger

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 6, 7:04 PM CDT	Special Weather Statement	OHX	Rutherford	41 min
Oct 6, 7:11 PM CDT	Areal Flood Advisory	OHX	Cumberland, Fentress, Pickett	3 hr
Oct 6, 7:12 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman	33 min
Oct 6, 7:14 PM CDT	Tornado Warning	OHX	Fentress	31 min
Oct 6, 7:16 PM CDT	Areal Flood Advisory	OHX	Putnam, White	3 hr
Oct 6, 7:22 PM CDT	Areal Flood Advisory	OHX	DeKalb, Warren, White	3 hr
Oct 6, 7:32 PM CDT	Areal Flood Advisory	OHX	Humphreys, Perry	3 hr
Oct 6, 7:44 PM CDT	Areal Flood Advisory	OHX	Bedford, Rutherford	3 hr
Oct 6, 7:44 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Pickett	26 min
Oct 6, 7:48 PM CDT	Flash Flood Warning	OHX	Giles	5 hr
Oct 6, 7:54 PM CDT	Special Weather Statement	OHX	Coffee	51 min
Oct 6, 8:07 PM CDT	Areal Flood Advisory	OHX	Davidson, Maury, Williamson	113 min
Oct 6, 8:17 PM CDT	Special Weather Statement	OHX	Humphreys	28 min
Oct 6, 8:28 PM CDT	Areal Flood Advisory	OHX	Humphreys	4 hr
Oct 6, 8:52 PM CDT	Flash Flood Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam, White	3 hr
Oct 6, 8:56 PM CDT	Flash Flood Warning	OHX	Humphreys, Perry	4 hr
Oct 6, 8:59 PM CDT	Flash Flood Warning	OHX	Perry, Wayne	4 hr
Oct 6, 9:15 PM CDT	Areal Flood Advisory	OHX	Coffee, Grundy, Warren	3 hr
Oct 6, 10:24 PM CDT	Flash Flood Warning	OHX	Bedford	3 hr
Oct 6, 10:40 PM CDT	Areal Flood Advisory	OHX	Houston, Humphreys, Montgomery	3 hr
Oct 6, 10:56 PM CDT	Areal Flood Advisory	OHX	Bedford, Cannon, Coffee, Rutherford	3 hr
Oct 6, 11:35 PM CDT	Areal Flood Advisory	OHX	Cannon, DeKalb, Rutherford, Smith, Wilson	3 hr
Oct 7, 12:24 AM CDT	Areal Flood Advisory	OHX	DeKalb, Jackson, Putnam, Smith, Trousdale, Wilson	2 hr
Oct 7, 1:45 AM CDT	River Flood Advisory	OHX	Bedford	8 hr
Oct 7, 9:29 AM CDT	River Flood Advisory	OHX	Perry	20 hr

Nearby

Special Weather Statements in Tennessee, 2021 Every special weather statement in 2021

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.