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.

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

Special Weather Statement
National Weather Service Morristown TN
1214 AM EDT Fri Mar 26 2021

TNZ012-013-035>037-260500-
Anderson TN-Scott TN-Union TN-Campbell TN-Morgan TN-
1214 AM EDT Fri Mar 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR MORGAN...NORTHERN ANDERSON...
CAMPBELL...SOUTHERN SCOTT AND WESTERN UNION COUNTIES UNTIL 100 AM
EDT...

At 1214 AM EDT, Doppler radar was tracking a strong thunderstorm 10
miles northeast of Wartburg, moving east at 45 mph.

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

Locations impacted include...
Clinton, La Follette, Wartburg, Jacksboro, Huntsville, Caryville,
Rocky Top, Norris, Sunbright and Norris Dam State Park.

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 3647 8394 3646 8393 3620 8384 3618 8393
      3619 8395 3617 8397 3598 8469 3631 8479
      3654 8397
TIME...MOT...LOC 0414Z 250DEG 37KT 3623 8450

BW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1229 AM EDT FRI MAR 26 2021

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

1228 AM     HAIL             3 SE TARIFFVILLE        35.45N 84.14W
03/26/2021  E1.25 INCH       MONROE             TN   BROADCAST MEDIA

&&

DH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1251 AM EDT FRI MAR 26 2021

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

1251 AM     HAIL             3 NE WALLAND            35.76N 83.79W
03/26/2021  E1.00 INCH       BLOUNT             TN   PUBLIC

&&

DH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
112 AM EDT FRI MAR 26 2021

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

1155 AM     NON-TSTM WND GST JOHNSON CITY            36.33N 82.37W
03/25/2021  M52 MPH          WASHINGTON         TN   BROADCAST MEDIA

&&

Special Weather Statement
National Weather Service Morristown TN
123 AM EDT Fri Mar 26 2021

TNZ037>039-068>073-085>087-260615-
Blount Smoky Mountains TN-Jefferson TN-Northwest Monroe TN-
Hamblen TN-Union TN-Loudon TN-Knox TN-Grainger TN-
Southeast Monroe TN-North Sevier TN-NW Blount TN-McMinn TN-
123 AM EDT Fri Mar 26 2021

...SIGNIFICANT WEATHER ADVISORY FOR LOUDON...KNOX...NORTHERN
MCMINN...BLOUNT...JEFFERSON...MONROE...NORTHWESTERN SEVIER...SOUTHERN
GRAINGER...SOUTHEASTERN UNION AND HAMBLEN COUNTIES UNTIL 215 AM
EDT...

At 121 AM EDT, Doppler radar was tracking showers and possibly a
thunderstorm along a line extending from near Plainview to near
Athens. Movement was east at 35 mph.

Winds in excess of 40 mph will be possible with this line of
showers and storms.

Locations impacted include...
Knoxville, Morristown, Maryville, Sevierville, Athens, Lenoir City,
Alcoa, Jefferson City, Sweetwater and Loudon.

LAT...LON 3538 8477 3630 8374 3629 8326 3628 8324
      3629 8324 3629 8312 3625 8308 3618 8316
      3617 8319 3616 8318 3614 8321 3615 8323
      3613 8322 3613 8324 3611 8324 3532 8415
TIME...MOT...LOC 0521Z 259DEG 29KT 3615 8382 3542 8467

DH