Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

June 12, 2021Cumberland County, Fentress County, Tennessee

NWS Nashville, TN issued this special weather statement at Jun 12, 2021, 5:54 PM CDT for Cumberland County, Fentress County, Tennessee. It was in force for 66 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: Jun 12, 2021, 5:54 PM CDT (22:54 UTC)
Expired: Jun 12, 2021, 7:00 PM CDT
In force: 66 min
Issued by: NWS Nashville, TN

Counties Cumberland County, TN, Fentress County, TN

The radar

The Knoxville radar (KMRX), 138 km from the middle of the area, began a volume at 22:57 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 12:00Z, 10.9 hours before the alert went out and 150 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: 1463 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

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 Jun 12, 1:39 PM CDT, 4 hours 15 minutes earlier.

Area forecast discussion, Jun 12, 1:39 PM CDT, 4 hours 15 minutes before

Area Forecast Discussion
National Weather Service Nashville TN
139 PM CDT Sat Jun 12 2021

.DISCUSSION...

A few thunderstorms have formed in the steamy air across Middle
Tennessee. A couple of the storms this afternoon and early
evening may be briefly severe with damaging wind gusts. Generally
greater coverage (30-40 percent) is expected over our western
counties where SPC has a marginal risk in place. This area is also
showing greatest capes with surface based values well over 3
kJ/kg and heat index values around 100. Showers and storms will
slowly fizzle late this evening and patchy fog is expected again
tonight.

On Sunday, similar heat and humidity coupled with the passage of
a cold front will reignite scattered thunderstorms across the
area. Again, a couple could be strong to briefly severe through
early evening Sunday.

A very different wx pattern will develop after Sunday. A
deepening trough over the eastern states will allow a few waves of
fresh Canadian air to bring some cooler and much less humid air
to Tennessee for several days. By next weekend, heat and humidity
will start creeping up again along with a chance for scattered
thunderstorms.

&&

.AVIATION...
12Z TAF DISCUSSION.

Upper trough over the mid-state finally moving off the plateau.
Shower/storm development likely to be way down today/this evening
compared to the last few days. Fog this morning will dissipate
quickly. Only VCTS in afternoon group for pcpn at this time...
but CKV has best chance of seeing storms this afternoon. Fog is
likely to develop again later tonight, and may once again go to
IFR levels CSV.

&&

.PRELIMINARY POINT TEMPS/POPS...
Nashville      72  91  69  91  64 /  30  30  10   0   0
Clarksville    71  89  66  89  62 /  30  30  10   0   0
Crossville     64  86  65  85  61 /  20  30  30   0   0
Columbia       69  90  67  89  64 /  20  30  20   0   0
Lawrenceburg   69  90  68  89  64 /  20  30  20   0   0
Waverly        70  89  66  89  64 /  40  30  10   0   0

&&

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

&&

DISCUSSION......13
AVIATION........07

Hazardous weather outlook, Jun 12, 1:19 PM CDT, 4 hours 35 minutes before

Hazardous Weather Outlook
National Weather Service Nashville TN
119 PM CDT Sat Jun 12 2021

TNZ005>011-023>034-056>066-075-077>080-093>095-131830-
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-
119 PM CDT Sat Jun 12 2021

This Hazardous Weather Outlook is for Middle Tennessee.

.DAY ONE...This afternoon and tonight.

A few strong to briefly severe thunderstorms are possible this
afternoon and evening. Damaging wind gusts are the main concern.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

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

13

In the hours before

Special weather statement, Jun 12, 4:42 PM CDT, 1 hour 12 minutes before

Special Weather Statement
National Weather Service Nashville TN
442 PM CDT Sat Jun 12 2021

TNZ094-095-122215-
Lawrence TN-Giles TN-
442 PM CDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LAWRENCE AND
NORTHWESTERN GILES COUNTIES UNTIL 515 PM CDT...

At 442 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles north of Pulaski, moving southwest at 25 mph.

Pea size hail and wind gusts up to 40 to 50 mph will be possible
with this storm.

Locations impacted include...
Lawrenceburg, Pulaski, Loretto, Minor Hill, Ethridge, Lynnville,
Goodspring and Leoma.

This includes Interstate 65 between mile markers 21 and 22.

LAT...LON 3501 8745 3523 8746 3543 8704 3543 8703
      3542 8702 3541 8699 3542 8698 3542 8697
      3533 8690 3532 8691 3530 8687 3500 8716
TIME...MOT...LOC 2142Z 054DEG 23KT 3534 8701

FB

Special weather statement, Jun 12, 5:08 PM CDT, 46 minutes before

Special Weather Statement
National Weather Service Nashville TN
508 PM CDT Sat Jun 12 2021

TNZ011-034-122300-
Fentress TN-Pickett TN-
508 PM CDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PICKETT AND FENTRESS
COUNTIES UNTIL 600 PM CDT...

At 507 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Great Meadows Campsites, or 10 miles northeast of
Jamestown, moving south at 35 mph.

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

Locations impacted include...
Jamestown, Allardt, Grimsley, Pall Mall, Pickett State Park and
Clarkrange.

LAT...LON 3637 8470 3637 8473 3633 8474 3632 8479
      3630 8480 3628 8488 3624 8488 3621 8491
      3616 8490 3615 8493 3617 8503 3614 8507
      3615 8511 3620 8508 3630 8512 3640 8512
      3643 8514 3662 8508 3660 8479 3641 8466
TIME...MOT...LOC 2207Z 007DEG 29KT 3654 8480

Barnwell

Special weather statement, Jun 12, 5:12 PM CDT, 42 minutes before

Special Weather Statement
National Weather Service Nashville TN
512 PM CDT Sat Jun 12 2021

TNZ094-095-122300-
Lawrence TN-Giles TN-
512 PM CDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN LAWRENCE AND GILES
COUNTIES UNTIL 600 PM CDT...

At 511 PM CDT, Doppler radar was tracking a strong thunderstorm near
Pulaski, moving southwest at 30 mph.

Pea size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Lawrenceburg, Pulaski, Loretto, St. Joseph, Elkton, Minor Hill,
Goodspring, Leoma, Frankewing, Iron City and Prospect.

This includes Interstate 65 between mile markers 2 and 20.

LAT...LON 3501 8761 3503 8761 3504 8758 3506 8759
      3538 8716 3525 8683 3513 8683 3499 8689
TIME...MOT...LOC 2211Z 026DEG 24KT 3514 8711

Barnwell

Special weather statement, Jun 12, 5:12 PM CDT, 42 minutes before

Special Weather Statement
National Weather Service Nashville TN
512 PM CDT Sat Jun 12 2021

TNZ056-093-094-122315-
Lawrence TN-Wayne TN-Perry TN-
512 PM CDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR WAYNE...WEST CENTRAL LAWRENCE AND
SOUTHERN PERRY COUNTIES UNTIL 615 PM CDT...

At 512 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles south of Linden, moving south at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Waynesboro, Collinwood, Flatwoods and Westpoint.

LAT...LON 3505 8784 3553 8797 3558 8776 3550 8772
      3548 8772 3548 8771 3513 8752 3500 8763
TIME...MOT...LOC 2212Z 342DEG 19KT 3549 8784

FB

Special weather statement, Jun 12, 5:42 PM CDT, 12 minutes before

Special Weather Statement
National Weather Service Nashville TN
542 PM CDT Sat Jun 12 2021

TNZ059>061-095-122330-
Williamson TN-Maury TN-Giles TN-Marshall TN-
542 PM CDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR MARSHALL...SOUTHEASTERN MAURY...
SOUTHEASTERN WILLIAMSON AND NORTHEASTERN GILES COUNTIES UNTIL 630 PM
CDT...

At 542 PM CDT, Doppler radar was tracking a strong thunderstorm near
Lewisburg, moving south at 20 mph.

Pea size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Columbia, Lewisburg, Spring Hill, Chapel Hill, Cornersville, Belfast,
Frankewing, I-65 East Of Columbia and Farmington.

This includes Interstate 65 between mile markers 15 and 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3520 8699 3578 8691 3577 8669 3572 8670
      3572 8669 3531 8667 3525 8675 3526 8683
      3519 8683
TIME...MOT...LOC 2242Z 004DEG 18KT 3553 8683

Barnwell

Special weather statement, Jun 12, 5:54 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Nashville TN
554 PM CDT Sat Jun 12 2021

TNZ033-034-066-130000-
Cumberland TN-Fentress TN-Overton TN-
554 PM CDT Sat Jun 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OVERTON...CUMBERLAND
AND FENTRESS COUNTIES UNTIL 700 PM CDT...

At 554 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 12 miles northeast of Monterey to 6 miles east
of Fairfield Glade. Movement was south at 50 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Crossville, Jamestown, Fairfield Glade, Crab Orchard, Allardt,
Pleasant Hill, Grimsley, Lake Tansi, Cumberland Mountain State Park,
Slate Springs, Indian Rock Lake and Clarkrange.

This includes Interstate 40 between mile markers 310 and 340.

LAT...LON 3583 8477 3576 8492 3575 8502 3577 8504
      3577 8521 3610 8517 3614 8510 3615 8516
      3641 8513 3641 8510 3652 8507 3638 8469
      3632 8479 3630 8480 3628 8488 3621 8491
      3615 8491 3609 8480 3600 8472 3591 8468
TIME...MOT...LOC 2254Z 002DEG 41KT 3626 8508 3598 8476

Barnwell

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:08 PM CDT	Flash Flood Warning	OHX	Rutherford	112 min
Jun 11, 7:55 PM CDT	Special Weather Statement	OHX	Hickman	50 min
Jun 11, 8:39 PM CDT	Areal Flood Advisory	OHX	Clay, Fentress, Jackson, Overton, Pickett, Putnam	3 hr
Jun 11, 8:43 PM CDT	Special Weather Statement	OHX	Fentress, Overton, Pickett	62 min
Jun 11, 10:15 PM CDT	Special Weather Statement	OHX	Sumner, Trousdale	45 min
Jun 12, 12:26 PM CDT	Special Weather Statement	OHX	Bedford	19 min
Jun 12, 2:41 PM CDT	Special Weather Statement	OHX	Giles	49 min
Jun 12, 2:50 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Marshall	25 min
Jun 12, 3:02 PM CDT	Special Weather Statement	OHX	Humphreys	43 min
Jun 12, 3:10 PM CDT	Areal Flood Advisory	OHX	Giles, Marshall	2 hr
Jun 12, 3:15 PM CDT	Special Weather Statement	OHX	Giles	60 min
Jun 12, 3:27 PM CDT	Special Weather Statement	OHX	Marshall	48 min
Jun 12, 3:29 PM CDT	Special Weather Statement	OHX	Wayne	46 min
Jun 12, 4:14 PM CDT	Special Weather Statement	OHX	Wayne	61 min
Jun 12, 4:15 PM CDT	Special Weather Statement	OHX	Giles, Marshall	60 min
Jun 12, 4:17 PM CDT	Areal Flood Advisory	OHX	Giles, Marshall, Maury, Williamson	3 hr
Jun 12, 4:42 PM CDT	Special Weather Statement	OHX	Giles, Lawrence	33 min
Jun 12, 5:08 PM CDT	Special Weather Statement	OHX	Fentress, Pickett	52 min
Jun 12, 5:12 PM CDT	Special Weather Statement	OHX	Giles	48 min
Jun 12, 5:12 PM CDT	Special Weather Statement	OHX	Wayne	63 min
Jun 12, 5:41 PM CDT	Flash Flood Warning	OHX	Marshall, Maury, Williamson	3 hr
Jun 12, 5:42 PM CDT	Special Weather Statement	OHX	Marshall	48 min
Jun 12, 6:41 PM CDT	Special Weather Statement	OHX	Dickson	49 min

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.