Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Morristown, TN

July 26, 2021Sequatchie County, Tennessee

NWS Morristown, TN issued this special weather statement at Jul 26, 2021, 6:29 PM CDT for Sequatchie County, Tennessee. It was in force for 31 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 26, 2021, 6:29 PM CDT (23:29 UTC)
Expired: Jul 26, 2021, 7:00 PM CDT
In force: 31 min
Issued by: NWS Morristown, TN

County Sequatchie County, TN

The radar

The Northeast Alabama radar (KHTX), 84 km from the middle of the area, began a volume at 23:32 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, 11.5 hours before the alert went out and 122 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: 1186 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 939 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: -6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Morristown, TN wrote its last area forecast discussion before this special weather statement went out at Jul 26, 6:18 PM CDT, 11 minutes earlier.

Area forecast discussion, Jul 26, 6:18 PM CDT, 11 minutes before

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Hazardous weather outlook, Jul 26, 2:35 PM CDT, 3 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service Morristown TN
335 PM EDT Mon Jul 26 2021

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-271945-
Cherokee-Clay-Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-
Johnson-Morgan-Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest Blount-Blount Smoky Mountains-
North Sevier-Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-
McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley-
West Polk-East Polk-Lee-Wise-Russell-
335 PM EDT Mon Jul 26 2021 /235 PM CDT Mon Jul 26 2021/

This Hazardous Weather Outlook is for portions of southwest North
Carolina...east Tennessee and southwest Virginia.

.DAY ONE...This Afternoon and Tonight

Widespread showers and thunderstorms are expected late this
afternoon, some of which could produce frequent lightning, strong
and gusty winds, and heavy rainfall rates that may cause isolated
flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Hot temperatures in the mid to upper 90s Wednesday and Thursday
combined with high humidity will lead to heat index values between
100 and 105. The highest heat indices will be in the southern
Plateau and central and southern Valley. Heat deaths are preventable.
Those outdoors should take frequent breaks in air conditioning
and drink plenty of water to remain hydrated. Never leave people
or pets unattended in vehicles.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed at this time.

TD/JB

In the hours before

Special weather statement, Jul 26, 3:27 PM CDT, 3 hours 2 minutes before

Special Weather Statement
National Weather Service Morristown TN
427 PM EDT Mon Jul 26 2021

TNZ082>085-262115-
Rhea TN-Bledsoe TN-Meigs TN-McMinn TN-
427 PM EDT Mon Jul 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR RHEA...NORTHEASTERN BLEDSOE...
MEIGS AND SOUTHWESTERN MCMINN COUNTIES UNTIL 515 PM EDT/415 PM
CDT/...

At 426 PM EDT/326 PM CDT/, Doppler radar was tracking a strong
thunderstorm near Dayton. This storm was nearly stationary.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Dayton, Decatur, Spring City, Graysville, Riceville, Peakland,
Hillsview, Stinging Fork Falls State Park, Piney Falls State Park and
Big Spring.

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 3536 8497 3538 8500 3538 8503 3541 8502
      3544 8506 3577 8516 3576 8507 3577 8504
      3575 8503 3577 8494 3576 8492 3580 8483
      3535 8461 3532 8480 3533 8481 3533 8482
      3536 8488 3533 8489 3530 8492 3529 8495
TIME...MOT...LOC 2026Z 236DEG 3KT 3554 8494

McD

Special weather statement, Jul 26, 3:57 PM CDT, 2 hours 32 minutes before

Special Weather Statement
National Weather Service Morristown TN
457 PM EDT Mon Jul 26 2021

TNZ081>085-099>101-262145-
Sequatchie TN-Rhea TN-Bledsoe TN-West Polk TN-Bradley TN-Hamilton TN-
Meigs TN-McMinn TN-
457 PM EDT Mon Jul 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN RHEA...NORTHERN
BRADLEY...EAST CENTRAL SEQUATCHIE...SOUTHWESTERN BLEDSOE...
SOUTHWESTERN MEIGS...NORTHWESTERN POLK...SOUTHERN MCMINN AND
NORTHEASTERN HAMILTON COUNTIES UNTIL 545 PM EDT/445 PM CDT/...

At 456 PM EDT/356 PM CDT/, Doppler radar was tracking a strong
thunderstorm over Charleston, or 10 miles northeast of Cleveland,
moving south at 10 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Cleveland, Athens, Dayton, Dunlap, Benton, Soddy-Daisy, Etowah,
Charleston, Englewood and Graysville.

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 3523 8512 3536 8541 3552 8531 3541 8443
      3540 8443 3540 8441 3539 8441 3532 8444
      3532 8445 3529 8450 3527 8446 3518 8450
      3516 8477
TIME...MOT...LOC 2056Z 016DEG 7KT 3531 8479

McD

Special weather statement, Jul 26, 4:38 PM CDT, 1 hour 51 minutes before

Special Weather Statement
National Weather Service Morristown TN
538 PM EDT Mon Jul 26 2021

TNZ099-100-262230-
Bradley TN-Hamilton TN-
538 PM EDT Mon Jul 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BRADLEY AND SOUTHEASTERN
HAMILTON COUNTIES UNTIL 630 PM EDT...

At 537 PM EDT, Doppler radar was tracking a strong thunderstorm near
Lakesite, or 11 miles northwest of Cleveland, moving south at 10 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Chattanooga, Cleveland, Soddy-Daisy, Lakesite, Harrison, South
Cleveland, Red Bank, Collegedale, Harrison Bay State Park and Flint
Springs.

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 3509 8531 3535 8514 3531 8496 3529 8495
      3530 8494 3529 8493 3502 8490
TIME...MOT...LOC 2137Z 016DEG 7KT 3525 8506

McD

Special weather statement, Jul 26, 4:45 PM CDT, 1 hour 44 minutes before

Special Weather Statement
National Weather Service Morristown TN
545 PM EDT Mon Jul 26 2021

NCZ060-061-TNZ086-087-101-102-262230-
Clay NC-Cherokee NC-West Polk TN-Northwest Monroe TN-East Polk TN-
Southeast Monroe TN-
545 PM EDT Mon Jul 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR CHEROKEE...SOUTHWESTERN CLAY...
POLK AND SOUTHERN MONROE COUNTIES UNTIL 630 PM EDT...

At 544 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles southeast of Etowah, or 12 miles north of Ducktown, moving
south at 10 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Murphy, Benton, Ducktown, William L. Davenport Refuge, Coker Creek,
Violet, Big Frog Mountain, Parksville, Turtletown and Copperhill.

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 3499 8473 3527 8462 3527 8452 3531 8447
      3529 8403 3524 8401 3522 8396 3499 8384
TIME...MOT...LOC 2144Z 016DEG 7KT 3521 8440

McD

Special weather statement, Jul 26, 5:24 PM CDT, 1 hour 5 minutes before

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Special weather statement, Jul 26, 6:29 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 7:08 PM CDT	Areal Flood Advisory	MRX	Sequatchie	52 min
Jul 26, 12:14 PM CDT	Special Weather Statement	MRX	Claiborne, Hancock, Hawkins	46 min
Jul 26, 12:26 PM CDT	Special Weather Statement	MRX	Campbell	49 min
Jul 26, 12:40 PM CDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Union	50 min
Jul 26, 1:05 PM CDT	Special Weather Statement	MRX	Anderson, Campbell	40 min
Jul 26, 1:10 PM CDT	Special Weather Statement	MRX	Grainger, Hamblen	50 min
Jul 26, 1:45 PM CDT	Special Weather Statement	MRX	Sevier	45 min
Jul 26, 1:47 PM CDT	Special Weather Statement	MRX	Anderson, Knox	43 min
Jul 26, 2:07 PM CDT	Special Weather Statement	MRX	Cocke	38 min
Jul 26, 2:45 PM CDT	Special Weather Statement	MRX	Meigs, Rhea	45 min
Jul 26, 2:54 PM CDT	Special Weather Statement	MRX	Rhea	51 min
Jul 26, 3:07 PM CDT	Special Weather Statement	MRX	Scott	38 min
Jul 26, 3:25 PM CDT	Special Weather Statement	MRX	Marion	50 min
Jul 26, 3:27 PM CDT	Special Weather Statement	MRX	Meigs, Rhea	48 min
Jul 26, 3:37 PM CDT	Flash Flood Warning	MRX	Bledsoe, Bradley, Hamilton, McMinn, Meigs, Rhea	68 min
Jul 26, 3:57 PM CDT	Special Weather Statement	MRX	McMinn	48 min
Jul 26, 4:38 PM CDT	Special Weather Statement	MRX	Hamilton	52 min
Jul 26, 4:45 PM CDT	Special Weather Statement	MRX	Polk	45 min
Jul 26, 5:24 PM CDT	Special Weather Statement	MRX	Rhea	51 min
Jul 26, 3:20 PM CDT	Special Weather Statement	MRX	Russell	40 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.