Alert archive / Tennessee / Special Weather Statements in 2020

Special Weather Statement, NWS Nashville, TN

July 21, 2020Williamson County, Tennessee

NWS Nashville, TN issued this special weather statement at Jul 21, 2020, 8:52 PM CDT for Williamson County, Tennessee. It was in force for 23 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: Jul 21, 2020, 8:52 PM CDT (01:52 UTC)
Expired: Jul 21, 2020, 9:15 PM CDT
In force: 23 min
Issued by: NWS Nashville, TN

County Williamson County, TN

The radar

The Nashville radar (KOHX), 44 km from the middle of the area, began a volume at 01:54 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 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 Jul 21, 7:08 PM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, Jul 21, 7:08 PM CDT, 1 hour 44 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
708 PM CDT Tue Jul 21 2020

.UPDATE...
FOR EVENING DISCUSSION.

&&

.DISCUSSION...

Will opt to delay the decreasing pops as isol to sct coverage
persists. Hrrr wants to hold on to the activity into the evening
and given the current cape values this looks believable. This
evenings upper divergence appears to shift over eastern areas by
03Z and so the best shot of convection holding on is across that
area. Otw, overnight lows still look acceptable. No other changes.

&&

.AVIATION...
00Z TAF DISCUSSION.

Isolated to scattered convection again in place across middle TN
this afternoon. A weakening shortwave axis will be on approach
tomorrow and thus, afternoon coverage will be greater as compared
with today's activity. Otw, tover values are running positive this
afternoon and so for the overnight, just light fog will again be
possible, particularly for areas where rainfall occurred earlier.

&&

.OHX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

DISCUSSION......11
AVIATION........21

In the hours before

Special weather statement, Jul 21, 8:06 PM CDT, 46 minutes before

Special Weather Statement
National Weather Service Nashville TN
806 PM CDT Tue Jul 21 2020

TNZ028-030-062-220130-
Rutherford TN-Wilson TN-Smith TN-
806 PM CDT Tue Jul 21 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SMITH...NORTHEASTERN
RUTHERFORD AND WILSON COUNTIES UNTIL 830 PM CDT...

At 806 PM CDT, Doppler radar was tracking a strong thunderstorm near
Walterhill, or 10 miles south of Lebanon, moving northeast at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Murfreesboro, Lebanon, Smyrna, Watertown, Walterhill, Cedars Of
Lebanon State Park, Lascassas, Tuckers Crossroads and Gladeville.

This includes the following highways...
 Interstate 40 between mile markers 231 and 255.
 Interstate 840 between mile markers 58 and 76.

LAT...LON 3632 8634 3632 8632 3631 8630 3630 8627
      3630 8626 3621 8597 3586 8626 3598 8653
      3631 8636 3631 8634 3633 8635
TIME...MOT...LOC 0106Z 205DEG 28KT 3605 8632

21

Special weather statement, Jul 21, 8:20 PM CDT, 32 minutes before

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Local storm report, Jul 21, 8:36 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
836 PM CDT TUE JUL 21 2020

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

0701 PM     TSTM WND DMG     1 WNW SHELBYVILLE       35.50N  86.47W
07/21/2020                   BEDFORD            TN   TRAINED SPOTTER

            TREES AND POWER LINES ON THE CORNER OF HORSESHOE DR AND
            VINE ST.

&&

EVENT NUMBER OHX2000465

MR3

Local storm report, Jul 21, 8:38 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NASHVILLE TN
838 PM CDT TUE JUL 21 2020

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

0701 PM     TSTM WND DMG     1 W SHELBYVILLE         35.49N  86.46W
07/21/2020                   BEDFORD            TN   TRAINED SPOTTER

            A TREE SPLIT AND FELL ON A HOME ON RIDGEWAY AVE.

&&

EVENT NUMBER OHX2000466

MR3

Special weather statement, Jul 21, 8:40 PM CDT, 12 minutes before

Special Weather Statement
National Weather Service Nashville TN
840 PM CDT Tue Jul 21 2020

TNZ008-009-028>030-220215-
Wilson TN-Trousdale TN-Sumner TN-Macon TN-Smith TN-
840 PM CDT Tue Jul 21 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SMITH...EASTERN
SUMNER...NORTHEASTERN WILSON...MACON AND TROUSDALE COUNTIES UNTIL 915
PM CDT...

At 840 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hartsville, moving northeast at 25 mph.

Winds in excess of 30 mph will be possible with this storm.

Locations impacted include...
Lafayette, Hartsville, Westmoreland, Bethpage, Dixon Springs,
Dickerson Chapel Recreation Area and Bledsoe Creek State Park.

LAT...LON 3662 8587 3660 8580 3624 8613 3634 8637
      3664 8626
TIME...MOT...LOC 0140Z 205DEG 49KT 3636 8621

21

Special weather statement, Jul 21, 8:52 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 7:00 PM CDT	Special Weather Statement	OHX	Bedford, Marshall	30 min
Jul 21, 7:13 PM CDT	Special Weather Statement	OHX	Cannon	32 min
Jul 21, 7:22 PM CDT	Special Weather Statement	OHX	Fentress	38 min
Jul 21, 7:31 PM CDT	Special Weather Statement	OHX	Bedford	44 min
Jul 21, 7:44 PM CDT	Special Weather Statement	OHX	Marshall	46 min
Jul 21, 8:06 PM CDT	Special Weather Statement	OHX	Wilson	24 min
Jul 21, 8:18 PM CDT	Areal Flood Advisory	OHX	Cumberland, Fentress, Overton, Pickett	117 min
Jul 21, 8:20 PM CDT	Special Weather Statement	OHX	Williamson	25 min
Jul 21, 8:40 PM CDT	Special Weather Statement	OHX	Macon, Trousdale	35 min
Jul 21, 8:53 PM CDT	Flash Flood Warning	OHX	Fentress, Overton, Pickett	3 hr
Jul 21, 9:07 PM CDT	Areal Flood Advisory	OHX	Rutherford, Wilson	113 min
Jul 21, 9:21 PM CDT	Special Weather Statement	OHX	Clay	24 min
Jul 22, 12:02 PM CDT	Special Weather Statement	OHX	Davidson	28 min
Jul 22, 1:21 PM CDT	Special Weather Statement	OHX	Davidson	24 min
Jul 22, 2:42 PM CDT	Special Weather Statement	OHX	DeKalb	18 min
Jul 22, 4:11 PM CDT	Areal Flood Advisory	OHX	Robertson	2 hr
Jul 22, 4:51 PM CDT	Special Weather Statement	OHX	Warren	24 min
Jul 22, 6:29 PM CDT	Areal Flood Advisory	OHX	Perry	2 hr

Nearby

Special Weather Statements in Tennessee, 2020 Every special weather statement 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; radar from the NEXRAD Level II archive.