Special Weather Statement, NWS Morristown, TN

AREA FORECAST DISCUSSION
National Weather Service Morristown TN
943 PM EDT Thu Mar 25 2021

.UPDATE...
EVENING UPDATE.

&&

.DISCUSSION...

The rain cooled wedge has been holding over our area so far, with
the warm front to our south and west across northern GA, far NE
AL, and then north into middle TN. With a lack of surface based
convective energy, we have seen plenty of elevated thunder but no
severe storms so far over our area. However, the front is nudging
northeast toward Marion County, and it still appears it will make
at least some additional progress to the north into our area
ahead of the approaching cold front. Given the presence of copious
shear, there remains a threat of severe storms especially south
and west as the line of convection to our west moves in over the
next few hours, including the threat of an isolated tornado. While
the threat of prolonged heavy rain has diminished, given the very
heavy rain rates with these thunderstorms will alllow the flash
flood watch to continue as is. Have seen wind gusts into the 50 to
75 mph range in some of the usual spots for mountain wave
enhancement, so the high wind warning will be allowed to continue
as well. Will make some adjustments to the PoPs/Wx to better fit
latest radar trends and timing, and will also make adjustments to
lower winds in the valley early tonight and to lower temps for
this evening in line with latest obs.

&&

.AVIATION...
00Z TAF DISCUSSION.

Will see another round of showers and thunderstorms move through
overnight. Expect VFR conditions dipping to MVFR or lower at
times, especially with the more significant showers/storms.
Clearing will move in later tonight, with VFR conditions then
persisting through the end of the period. Winds will become gusty
from the south and southwest tonight before becoming more
westerly/northwest and diminishing.

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             54  73  51  75  63 /  80   0  30  70  70
Knoxville McGhee Tyson Airport, TN  55  71  47  69  61 /  80  10  10  70  70
Oak Ridge, TN                       53  72  47  69  60 /  80   0  10  70  80
Tri Cities Airport, TN              55  69  43  70  57 /  80   0   0  60  70

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...Flash Flood Watch until 8 AM EDT Friday for Cherokee-Clay.

     Wind Advisory until 5 AM EDT Friday for Cherokee-Clay.

TN...High Wind Warning until 5 AM EDT Friday for Blount Smoky
     Mountains-Cocke Smoky Mountains-Johnson-Sevier Smoky
     Mountains-Southeast Carter-Southeast Greene-Southeast
     Monroe-Unicoi.

     Flash Flood Watch until 8 AM EDT /7 AM CDT/ Friday for Anderson-
     Bledsoe-Blount Smoky Mountains-Bradley-East Polk-Hamilton-
     Jefferson-Knox-Loudon-Marion-McMinn-Meigs-Morgan-North
     Sevier-Northwest Blount-Northwest Monroe-Rhea-Roane-
     Sequatchie-Sevier Smoky Mountains-Southeast Monroe-West
     Polk.

     Wind Advisory until 5 AM EDT /4 AM CDT/ Friday for Anderson-
     Bledsoe-Bradley-Campbell-Claiborne-East Polk-Grainger-
     Hamblen-Hamilton-Hancock-Hawkins-Jefferson-Knox-Loudon-
     Marion-McMinn-Meigs-Morgan-North Sevier-Northwest Blount-
     Northwest Carter-Northwest Cocke-Northwest Greene-Northwest
     Monroe-Rhea-Roane-Scott-Sequatchie-Sullivan-Union-
     Washington-West Polk.

VA...Wind Advisory until 5 AM EDT Friday for Lee-Russell-Scott-
     Washington-Wise.

&&

Hazardous Weather Outlook
National Weather Service Morristown TN
951 PM EDT Thu Mar 25 2021

NCZ061-TNZ014>018-037>047-070-073-074-VAZ001-002-005-006-008-
270200-
Clay-Claiborne-Hancock-Hawkins-Sullivan-Johnson-Union-Grainger-
Hamblen-Northwest Cocke-Cocke Smoky Mountains-Northwest Greene-
Southeast Greene-Washington-Unicoi-Northwest Carter-
Southeast Carter-Jefferson-North Sevier-Sevier Smoky Mountains-
Lee-Wise-Scott-Russell-
951 PM EDT Thu Mar 25 2021

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

.DAY ONE...Tonight

Severe thunderstorms are possible tonight with moderate to heavy
rainfall expected. The primary hazards will be damaging winds.
However, there remains a threat for a few tornadoes late this
evening and tonight, and a few of the stronger storms could have
damaging hail. There is a threat for localized flash flooding as
rainfall rates will be high. See the Flash Flood Watch for
additional information.

Strong winds are also expected across the area with gusts to near
40 mph possible area-wide at least briefly. See the Wind Advisory
for additional information. Damaging winds are expected in the
Tennessee mountains and adjacent foothills tonight where gusts
will likely exceed 70 mph. See the High Wind Warning for
additional information.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There could be some storms Saturday afternoon and evening, a few
strong. Heavy rains could cause some isolated flooding problems
Saturday night into Sunday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter reports will be needed this afternoon into tonight.

NCZ060-TNZ012-013-035-036-067>069-071-072-081>087-098>102-270200-
Cherokee-Scott-Campbell-Morgan-Anderson-Roane-Loudon-Knox-
Northwest Blount-Blount Smoky Mountains-Sequatchie-Bledsoe-Rhea-
Meigs-McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-
Bradley-West Polk-East Polk-
951 PM EDT Thu Mar 25 2021 /851 PM CDT Thu Mar 25 2021/

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

.DAY ONE...Tonight

Severe thunderstorms are possible tonight with moderate to heavy
rainfall expected. The primary hazards will be damaging winds.
However, there remains a threat for a few tornadoes late this
evening and tonight, and a few of the stronger storms could have
damaging hail. There is a threat for localized flash flooding as
rainfall rates will be high. See the Flash Flood Watch for
additional information.

Strong winds are also expected across the area with gusts to near
40 mph possible area-wide at least briefly. See the Wind Advisory
for additional information. Damaging winds are expected in the
Tennessee mountains and adjacent foothills tonight where gusts
will likely exceed 70 mph. See the High Wind Warning for
additional information.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There could be some strong to possibly severe storms on and near
the Plateau Saturday afternoon and into Saturday evening.  Heavy
rains could cause some isolated flooding problems Saturday night
into Sunday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter reports will be needed this afternoon into tonight.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1101 PM EDT THU MAR 25 2021

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

1038 PM     FLASH FLOOD      5 WNW HAYESVILLE        35.08N 83.89W
03/25/2021                   CLAY               NC   AMATEUR RADIO

            2 FEET OF WATER ON FIRES CREEK ROAD NEAR
            JOHNSON ROAD.

&&

GARUCKAS

Special Weather Statement
National Weather Service Morristown TN
1106 PM EDT Thu Mar 25 2021

NCZ060-TNZ087-101-102-260345-
Cherokee NC-West Polk TN-East Polk TN-Southeast Monroe TN-
1106 PM EDT Thu Mar 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHEROKEE...POLK AND
SOUTHEASTERN MONROE COUNTIES UNTIL 1145 PM EDT...

At 1105 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Eton, or 10 miles north of Chatsworth, moving
northeast at 60 mph.

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

Locations impacted include...
Ducktown, William L. Davenport Refuge, Coker Creek, Conasauga,
Violet, Big Frog Mountain, Citico, Turtletown, Hiawasse Dam and
Archville.

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.

&&

A Tornado Watch remains in effect until 200 AM EDT for east
Tennessee.

LAT...LON 3499 8478 3501 8476 3525 8439 3524 8437
      3529 8432 3544 8407 3537 8401 3535 8404
      3531 8404 3524 8401 3522 8397 3523 8391
      3522 8389 3499 8441
TIME...MOT...LOC 0305Z 237DEG 54KT 3493 8477

BW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1129 PM EDT THU MAR 25 2021

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

0900 PM     NON-TSTM WND GST 2 W GATLINBURG          35.72N 83.53W
03/25/2021  M77 MPH          SEVIER             TN   MESONET

            COVE MOUNTAIN.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1132 PM EDT THU MAR 25 2021

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

0930 PM     NON-TSTM WND GST 3 S CAMP CREEK          36.04N 82.77W
03/25/2021  M64 MPH          GREENE             TN   MESONET

            NOAA ATDD SITE.

&&

Special Weather Statement
National Weather Service Morristown TN
1143 PM EDT Thu Mar 25 2021

TNZ035-036-067-068-082>084-260430-
Rhea TN-Bledsoe TN-Anderson TN-Roane TN-Loudon TN-Meigs TN-Morgan TN-
1143 PM EDT Thu Mar 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MORGAN...NORTHERN
RHEA...LOUDON...BLEDSOE...NORTHEASTERN MEIGS...SOUTHWESTERN ANDERSON
AND ROANE COUNTIES UNTIL 1230 AM EDT/1130 PM CDT/...

At 1142 PM EDT/1042 PM CDT/, Doppler radar was tracking a strong
thunderstorm 10 miles north of Pikeville, moving east at 60 mph.

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

Locations impacted include...
Oak Ridge, Lenoir City, Kingston, Rockwood, Loudon, Pikeville,
Farragut, Fairview, Oliver Springs and Spring City.

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.

&&

A Tornado Watch remains in effect until 200 AM EDT/100 AM CDT/ for
east Tennessee.

LAT...LON 3572 8526 3576 8526 3577 8504 3575 8503
      3576 8492 3583 8477 3591 8468 3602 8475
      3620 8429 3597 8421 3594 8422 3595 8425
      3593 8424 3594 8427 3592 8425 3591 8427
      3581 8417 3570 8417 3553 8543 3554 8543
TIME...MOT...LOC 0342Z 252DEG 58KT 3574 8515

BW

Special Weather Statement
National Weather Service Morristown TN
1143 PM EDT Thu Mar 25 2021

NCZ060-TNZ086-087-101-102-260430-
Cherokee NC-West Polk TN-Northwest Monroe TN-East Polk TN-
Southeast Monroe TN-
1143 PM EDT Thu Mar 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHEROKEE...POLK AND
MONROE COUNTIES UNTIL 1230 AM EDT...

At 1143 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles north of Eton, or 11 miles north of Chatsworth, moving
northeast at 85 mph.

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

Locations impacted include...
Benton, Vonore, Tellico Plains, William L. Davenport Refuge, Coker
Creek, Conasauga, Violet, Tariffville, McGee Carson Peninsula and Big
Frog Mountain.

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.

&&

A Tornado Watch remains in effect until 200 AM EDT for east
Tennessee.

LAT...LON 3499 8478 3509 8475 3527 8455 3527 8452
      3532 8445 3533 8440 3540 8441 3560 8419
      3559 8411 3554 8409 3555 8400 3551 8401
      3549 8399 3550 8397 3548 8394 3541 8402
      3537 8401 3535 8404 3529 8403 3498 8451
TIME...MOT...LOC 0343Z 228DEG 74KT 3495 8476

DH