Alert archive / Tennessee / Special Weather Statements in 2018

Special Weather Statement, NWS Morristown, TN

September 9, 2018Hancock County, Hawkins County, Tennessee

NWS Morristown, TN issued this special weather statement at Sep 9, 2018, 6:21 PM EDT for Hancock County, Hawkins County, Tennessee. It was in force for 39 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: Sep 9, 2018, 6:21 PM EDT (22:21 UTC)
Expired: Sep 9, 2018, 7:00 PM EDT
In force: 39 min
Issued by: NWS Morristown, TN

Counties Hancock County, TN, Hawkins County, TN

The radar

The Knoxville radar (KMRX), 46 km from the middle of the area, began a volume at 22:24 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.4 hours before the alert went out and 283 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 133 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 Sep 9, 3:33 PM EDT, 2 hours 48 minutes earlier.

Area forecast discussion, Sep 9, 3:33 PM EDT, 2 hours 48 minutes before

Area Forecast Discussion
National Weather Service Morristown TN
333 PM EDT Sun Sep 9 2018

.SHORT TERM...(Tonight and Monday)...
A cold front, currently located near Nashville, will slowly move
into the area from the west tonight. Training cells may give a small
risk of localized flooding problems through the evening. Lightning
activity will remain isolated. With the mid to upper level flow from
SW to NE, parallel to the front, the front will make very slow
eastward progress through tomorrow, becoming positioned along the
spine of the Appalachians by the end of the day. With a moist air
mass to the east of it, PoPs will remain in the high chance to
likely range, with QPF amounts averaging around a half inch in the
eastern sections. Broken to overcast cloud cover through the day
will hold high temps in the 70s to lower 80s.

.LONG TERM...(Monday night through Sunday)...
The forecast starts out with a relatively decent pop due to the
early week frontal boundary in the vicinity. Trended pops back a
bit later Tuesday afternoon through Tuesday night, as convergence
weakens along the boundary. On Wednesday, models try to bring a
weak upper level wave back into the Mid Mississippi Valley region
with some low level troughiness developing across the Mid South.
Because there will be some instability and lift present from this
weak system, used a broadbrushed pop for showers and thunderstorms
and generally maintained this idea into Thursday with a
decreasing pop trend into the weekend. The latter part of the
forecast gets a little interesting with Florence predicted to move
onshore along the Southeast Atlantic Coast, with with the center
line path of the confidence cone indicating that the rather strong
tropical circulation may cross the North Carolina border just
north of the Greater Myrtle Beach area in South Carolina sometime
Friday morning. For our late week weather, tried to stay with a
scenario that utilizes increasing subsidence along with a slightly
drier easterly or northeasterly flow ahead of Florence. Of course
there is still a fair amount of uncertainty in this forecast, and
late week weather conditions will come into better focus in the
next few days. Temperatures will remain rather warm in the
extended, with highs and lows several degrees above normal;
especially later in the week, if the drying and subsidence concept
occurs.

&&

.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN             72  79  67  85 /  80  50  20  20
Knoxville McGhee Tyson Airport, TN  70  79  65  84 /  80  50  30  40
Oak Ridge, TN                       70  77  65  84 /  80  50  20  20
Tri Cities Airport, TN              69  79  64  84 /  60  70  40  40

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...None.
TN...None.
VA...None.
&&

Hazardous weather outlook, Sep 9, 3:06 PM EDT, 3 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Morristown TN
306 PM EDT Sun Sep 9 2018

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-101915-
Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins-
Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen-
Northwest Cocke-Cocke Smoky Mountains-Northwest Greene-
Southeast Greene-Washington TN-Unicoi-Northwest Carter-
Southeast Carter-Roane-Loudon-Knox-Jefferson-NW 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-Scott-Russell-Washington-
306 PM EDT Sun Sep 9 2018 /206 PM CDT Sun Sep 9 2018/

This Hazardous Weather Outlook is for portions of Southwest North
Carolina...East Tennessee and Southwest Virginia.

.DAY ONE...This Afternoon and Tonight

Showers and thunderstorms tonight could bring periods of heavy
rain. Some locations that see multiple rounds of prolonged heavy
rain could experience flooding, especially in poorly draining
locations. The most likely areas to see potential flooding issues
would be in southwest Virginia, and northern portions of the
Cumberland Plateau.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Showers and thunderstorms will continue into Monday. Some
locations that see multiple rounds of prolonged heavy rain could
experience flooding, especially in poorly draining locations. The
most likely areas to see potential flooding issues would be in
the Tennessee mountains.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Sep 9, 4:55 PM EDT, 1 hour 26 minutes before

Special Weather Statement
National Weather Service Morristown TN
455 PM EDT SUN SEP 9 2018

TNZ036>038-069-092130-
Anderson TN-Union TN-Grainger TN-Knox TN-
455 PM EDT SUN SEP 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN KNOX...EAST CENTRAL
ANDERSON...SOUTHWESTERN GRAINGER AND UNION COUNTIES UNTIL 530 PM
EDT...

At 455 PM EDT, Doppler radar was tracking a strong thunderstorm near
Knoxville, moving northeast at 30 mph.

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

Locations impacted include...
Knoxville, Maynardville, Plainview, Halls, Blaine, Luttrell,
Paulette, Rose Hill, Big Ridge State Park, Sharps Chapel, House
Mountain State Park, Maloneyville, Mascot, Bearden and Powell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3618 8356 3615 8359 3616 8360 3613 8361
      3614 8364 3613 8364 3612 8363 3611 8365
      3612 8365 3612 8367 3610 8367 3609 8368
      3610 8371 3607 8370 3590 8398 3603 8414
      3638 8383
TIME...MOT...LOC 2055Z 223DEG 28KT 3603 8399

Special weather statement, Sep 9, 5:20 PM EDT, 1 hour 1 minute before

Special Weather Statement
National Weather Service Morristown TN
520 PM EDT SUN SEP 9 2018

TNZ016-038>040-042-070-073-092200-
Jefferson TN-Hamblen TN-Northwest Greene TN-Northwest Cocke TN-
Grainger TN-North Sevier TN-Hawkins TN-
520 PM EDT SUN SEP 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HAWKINS...
JEFFERSON...NORTHWESTERN COCKE...NORTHWESTERN GREENE...EAST CENTRAL
GRAINGER...NORTHEASTERN SEVIER AND HAMBLEN COUNTIES UNTIL 600 PM
EDT...

At 520 PM EDT, Doppler radar was tracking a strong thunderstorm near
Dandridge, moving northeast at 45 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Morristown, Greeneville, Sevierville, Jefferson City, Newport,
Rogersville, Dandridge, Bean Station, Tusculum, White Pine, New
Market, Baneberry, Parrottsville, Russellville, Mosheim, Bulls Gap,
Caney Branch, Panther Creek State Park, Bird Crossing and Fairgarden.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3618 8271 3586 8334 3600 8366 3641 8324
      3643 8320 3644 8320 3648 8316
TIME...MOT...LOC 2120Z 225DEG 38KT 3604 8336

Special weather statement, Sep 9, 5:51 PM EDT, 30 minutes before

Special Weather Statement
National Weather Service Morristown TN
551 PM EDT SUN SEP 9 2018

TNZ012-035-067-092230-
Roane TN-Scott TN-Morgan TN-
551 PM EDT SUN SEP 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR MORGAN...CENTRAL ROANE AND SCOTT
COUNTIES UNTIL 630 PM EDT...

At 551 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles southwest of Jamestown to 9 miles
south of Crossville. Movement was east at 35 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Locations impacted include...
Oak Ridge, Kingston, Rockwood, Oneida, Wartburg, Huntsville,
Helenwood, Midtown, Harriman, Winfield, Sunbright, Oakdale, Rugby,
Coalfield, High Point, Honey Creek State Park, Robbins, Dearmond, Big
South Fork National Park and Deerlodge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3660 8441 3620 8439 3614 8445 3611 8442
      3610 8438 3585 8437 3582 8479 3591 8468
      3600 8472 3609 8480 3609 8483 3616 8491
      3620 8491 3629 8487 3630 8480 3634 8474
      3637 8472 3640 8466 3657 8476 3660 8467
TIME...MOT...LOC 2151Z 249DEG 36KT 3628 8503 3581 8502

Special weather statement, Sep 9, 5:53 PM EDT, 28 minutes before

Special Weather Statement
National Weather Service Morristown TN
553 PM EDT SUN SEP 9 2018

TNZ016-039-040-042-044-092245-
Washington TN-Hamblen TN-Northwest Greene TN-Northwest Cocke TN-
Hawkins TN-
553 PM EDT SUN SEP 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HAWKINS...WEST CENTRAL
WASHINGTON...NORTH CENTRAL COCKE...GREENE AND SOUTHEASTERN HAMBLEN
COUNTIES UNTIL 645 PM EDT...

At 553 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles north of Parrottsville, or 13 miles southeast of Morristown,
moving northeast at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Morristown, Greeneville, Rogersville, Tusculum, Surgoinsville,
Parrottsville, Church Hill, Mosheim, Bulls Gap, Baileyton, Chucky,
Limestone, McCloud, Romeo, Telford, Kepler, Lowland, Mohawk, Davy
Crockett Birthplace and Jearoldstown.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3601 8309 3618 8324 3656 8284 3623 8248
TIME...MOT...LOC 2153Z 235DEG 25KT 3613 8308

Special weather statement, Sep 9, 5:59 PM EDT, 22 minutes before

Special Weather Statement
National Weather Service Morristown TN
559 PM EDT SUN SEP 9 2018

VAZ005-006-008-092245-
Washington VA-Scott VA-Russell VA-
559 PM EDT SUN SEP 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR RUSSELL...EASTERN SCOTT AND
WESTERN WASHINGTON COUNTIES UNTIL 645 PM EDT...

At 559 PM EDT, Doppler radar was tracking a strong thunderstorm 10
miles northeast of Weber City, or 10 miles east of Gate City, moving
northeast at 25 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Lebanon, Cleveland Va, Honaker, St. Paul, Nickelsville, Rosedale,
Dye, Lindell, Collingwood, Castlewood, Holston, Hansonville, Benhams
and Hiltons.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3705 8183 3696 8178 3693 8184 3686 8177
      3659 8229 3659 8239 3666 8254 3688 8240
      3689 8237 3689 8232 3691 8232 3691 8230
      3697 8233 3700 8229 3699 8226 3704 8217
      3705 8204 3712 8201 3713 8199 3713 8193
TIME...MOT...LOC 2159Z 208DEG 21KT 3669 8240

Special weather statement, Sep 9, 6:21 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Morristown TN
621 PM EDT SUN SEP 9 2018

TNZ015-016-038-039-VAZ001-092300-
Hamblen TN-Hancock TN-Grainger TN-Hawkins TN-Lee VA-
621 PM EDT SUN SEP 9 2018

...SIGNIFICANT WEATHER ADVISORY FOR HAWKINS...HANCOCK...NORTHEASTERN
GRAINGER...NORTHEASTERN HAMBLEN AND SOUTH CENTRAL LEE COUNTIES UNTIL
700 PM EDT...

At 620 PM EDT, Doppler radar was tracking a strong thunderstorm near
Bean Station, or 10 miles west of Rogersville, moving northeast at 30
mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Rogersville, Sneedville, Bean Station, Surgoinsville, Bulls Gap,
Mooresburg, Evanston, St. Clair, McCloud, Kyles Ford, Treadway and
Klondike.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3663 8297 3659 8298 3659 8284 3657 8276
      3628 8300 3627 8302 3628 8303 3625 8306
      3624 8309 3633 8333 3671 8327
TIME...MOT...LOC 2220Z 211DEG 27KT 3637 8319

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 4:01 PM EDT	Special Weather Statement	MRX	Loudon	44 min
Sep 9, 4:08 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Loudon, Roane	52 min
Sep 9, 4:21 PM EDT	Special Weather Statement	MRX	Hamilton	54 min
Sep 9, 4:55 PM EDT	Special Weather Statement	MRX	Knox, Union	35 min
Sep 9, 5:20 PM EDT	Special Weather Statement	MRX	Greene, Hamblen, Jefferson	40 min
Sep 9, 5:51 PM EDT	Special Weather Statement	MRX	Morgan, Roane, Scott	39 min
Sep 9, 5:53 PM EDT	Special Weather Statement	MRX	Greene, Hawkins	52 min
Sep 9, 6:08 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins, Washington	52 min
Sep 9, 6:25 PM EDT	Special Weather Statement	MRX	Anderson, Campbell, Morgan, Roane, Scott	50 min
Sep 9, 6:42 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hancock, Hawkins, Sullivan, Washington	48 min
Sep 9, 6:48 PM EDT	Areal Flood Advisory	MRX	Greene, Sullivan, Washington	117 min
Sep 9, 7:06 PM EDT	Special Weather Statement	MRX	Anderson, Campbell, Union	39 min
Sep 9, 7:12 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Hawkins, Johnson, Sullivan	78 min
Sep 9, 7:17 PM EDT	Special Weather Statement	MRX	Blount, Sevier	58 min
Sep 9, 5:59 PM EDT	Special Weather Statement	MRX	Russell	46 min
Sep 9, 6:09 PM EDT	Severe Thunderstorm Warning	MRX	Russell	51 min

Nearby

Special Weather Statements in Tennessee, 2018 Every special weather statement in 2018

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.