Alert archive / Tennessee / Special Weather Statements in 2017
Special Weather Statement, NWS Morristown, TN
NWS Morristown, TN issued this special weather statement at Nov 18, 2017, 8:21 PM EST for 5 counties in Tennessee. It was in force for 54 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Nov 18, 2017, 8:21 PM EST (01:21 UTC)
- Expired
- Nov 18, 2017, 9:15 PM EST
- In force
- 54 min
- Issued by
- NWS Morristown, TN
Counties Anderson County, TN, Blount County, TN, Knox County, TN, Loudon County, TN, Roane County, TN
The radar
The Knoxville radar (KMRX), 75 km from the middle of the area, began a volume at 01:23 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 18, 9:05 PM EST | TSTM WND GST 48 | 1 Nw Alcoa, TN | MEASURED AT TYSON MCGHEE. A COUPLE OF TREE ALSO REPORTED DOWN ACROSS THE KNOXVILLE AREA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 1.4 hours before the alert went out and 218 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.
- Mixed-layer CAPE
- 6 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 447 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- -277 m²/s²
- 0-3 km storm-relative helicity
- -35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
074
WWUS84 KMRX 190121
SPSMRX
Special Weather Statement
National Weather Service Morristown TN
821 PM EST SAT NOV 18 2017
TNZ035-036-067>069-071-190215-
Anderson TN-Roane TN-Loudon TN-Knox TN-NW Blount TN-Morgan TN-
821 PM EST SAT NOV 18 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MORGAN...LOUDON...
ANDERSON...KNOX...NORTHERN BLOUNT AND ROANE COUNTIES UNTIL 915 PM
EST...
At 821 PM EST, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles north of Oliver Springs to near
Rockwood. Movement was east at 35 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations impacted include...
Knoxville, Oak Ridge, Maryville, Clinton, Lenoir City, Alcoa,
Kingston, Rockwood, Loudon, Farragut, Fairview, Oliver Springs,
Louisville, Plainview, Rockford, Midtown, Eagleton Village, Harriman,
Strawberry Plains and Halls.
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.
&&
LAT...LON 3566 8463 3573 8464 3572 8470 3618 8446
3617 8440 3622 8437 3618 8424 3624 8423
3622 8409 3628 8403 3617 8392 3617 8374
3610 8368 3597 8365 3589 8379 3578 8374
3564 8388 3562 8416 3567 8450 3561 8452
TIME...MOT...LOC 0121Z 263DEG 31KT 3617 8440 3583 8464
$$
05/MAWhat 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 Nov 18, 6:46 PM EST, 1 hour 35 minutes earlier.
Area forecast discussion, Nov 18, 6:46 PM EST, 1 hour 35 minutes before
Area Forecast Discussion
National Weather Service Morristown TN
646 PM EST Sat Nov 18 2017
.AVIATION...
The fropa occurs during the opening 6 hour period, 00Z-06Z, with
lowering cigs, rain-reduced vsbys, strong SSW winds becoming WNW
with fropa around 01-02Z. Expect mostly MVFR vsbys and cigs
during the weather; MVFR cigs will linger even after the vsbys
improve with rain departure. Cigs improving after 12Z to VFR.
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...Wind Advisory until 4 AM EST Sunday for Cherokee-Clay.
TN...Wind Advisory until 4 AM EST /3 AM CST/ Sunday for Anderson-
Bledsoe-Blount Smoky Mountains-Bradley-Campbell-Claiborne-
Cocke Smoky Mountains-East Polk-Grainger-Hamblen-Hamilton-
Hancock-Hawkins-Jefferson-Johnson-Knox-Loudon-Marion-McMinn-
Meigs-Morgan-NW Blount-North Sevier-Northwest Carter-
Northwest Cocke-Northwest Greene-Northwest Monroe-Rhea-
Roane-Scott TN-Sequatchie-Sevier Smoky Mountains-Southeast
Carter-Southeast Greene-Southeast Monroe-Sullivan-Unicoi-
Union-Washington TN-West Polk.
VA...Wind Advisory until 4 AM EST Sunday for Lee-Russell-Scott-
Washington-Wise.
&&
GCHazardous weather outlook, Nov 18, 3:29 PM EST, 4 hours 52 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 329 PM EST Sat Nov 18 2017 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-192030- 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- 329 PM EST Sat Nov 18 2017 /229 PM CST Sat Nov 18 2017/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...This Afternoon and Tonight A wind advisory is in effect through tonight. South to southwest winds will continue to be gusty through this evening. Winds will shift to the west northwest tonight but remain gusty as a cold front crosses the area. An isolated thunderstorm this evening may also produce locally stronger wind gusts, which could potentially cause damage. Light snow accumulations are possible overnight at the highest elevations. .DAYS TWO THROUGH SEVEN...Sunday through Friday The weather will be turning suddenly much colder for Sunday, with wind chill readings in the teens in the higher elevations on Sunday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed, but are encouraged to report any damaging winds.
In the hours before
Special weather statement, Nov 18, 7:16 PM EST, 1 hour 5 minutes before
Special Weather Statement
National Weather Service Morristown TN
616 PM CST SAT NOV 18 2017
TNZ081-082-098-190100-
Sequatchie TN-Bledsoe TN-Marion TN-
616 PM CST SAT NOV 18 2017
...SIGNIFICANT WEATHER ADVISORY FOR SEQUATCHIE...BLEDSOE AND MARION
COUNTIES UNTIL 700 PM CST...
At 616 PM CST, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles southeast of McMinnville to 10 miles
northwest of Monteagle to near Tims Ford Lake to 7 miles east of New
Market. Movement was east at 50 mph.
Wind gusts of 50 to 55 mph will be possible with these storms.
Locations impacted include...
Dunlap, Jasper, Pikeville, Signal Mountain, South Pittsburg,
Whitwell, Kimball, Monteagle, Fairmount, Powells Crossroads, Orme,
Cartwright, Chimneys State Park, Mount Crest, Brayton, New Hope,
Melvine, Martin Springs, Fiery Gizzard State Park and Haletown
(guild).
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.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3522 8574 3524 8569 3529 8571 3532 8557
3538 8549 3549 8554 3553 8560 3557 8542
3576 8526 3576 8492 3557 8511 3547 8512
3545 8517 3515 8538 3507 8536 3500 8543
3499 8586 3522 8587
TIME...MOT...LOC 0016Z 271DEG 48KT 3563 8560 3537 8591 3520 8619 3495
8630
05/MASpecial weather statement, Nov 18, 7:25 PM EST, 56 minutes before
Special Weather Statement
National Weather Service Morristown TN
725 PM EST SAT NOV 18 2017
TNZ012-035-190130-
Scott TN-Morgan TN-
725 PM EST SAT NOV 18 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MORGAN AND SCOTT
COUNTIES UNTIL 830 PM EST...
At 724 PM EST, Doppler radar was tracking strong thunderstorms along
a line extending from near Slickford to Jamestown to 12 miles east of
Livingston. Movement was east at 45 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations impacted include...
Oneida, Huntsville, Helenwood, Winfield, Sunbright, Rugby, Smokey
Junction, Honey Creek State Park, Robbins, Big South Fork National
Park, Rugby State Park, Ketchen, Norma, Elgin, Slick Rock and Frozen
Head State Park.
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.
&&
LAT...LON 3659 8426 3651 8426 3651 8433 3646 8435
3642 8435 3639 8431 3638 8431 3639 8433
3628 8433 3626 8438 3621 8437 3617 8440
3615 8445 3624 8489 3629 8487 3630 8480
3637 8472 3637 8470 3640 8466 3660 8478
TIME...MOT...LOC 0024Z 276DEG 41KT 3665 8490 3645 8496 3635 8510
05/MASpecial weather statement, Nov 18, 7:59 PM EST, 22 minutes before
Special Weather Statement
National Weather Service Morristown TN
759 PM EST SAT NOV 18 2017
TNZ081>084-098-099-190200-
Sequatchie TN-Rhea TN-Bledsoe TN-Marion TN-Hamilton TN-Meigs TN-
759 PM EST SAT NOV 18 2017
...SIGNIFICANT WEATHER ADVISORY FOR RHEA...SOUTHEASTERN SEQUATCHIE...
CENTRAL BLEDSOE...MEIGS...EASTERN MARION AND HAMILTON COUNTIES UNTIL
900 PM EST/800 PM CST/...
At 759 PM EST/659 PM CST/, Doppler radar was tracking strong
thunderstorms along a line extending from 9 miles east of Pikeville
to 7 miles east of Dunlap to near Whitwell to Jasper. Movement was
east at 40 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations impacted include...
Chattanooga, Dayton, Jasper, Decatur, Soddy-Daisy, Signal Mountain,
South Pittsburg, Spring City, Walden, Lakesite, Whitwell, Kimball,
Ridgeside, Harrison, Fairmount, Red Bank, Collegedale, Graysville,
Powells Crossroads and Cartwright.
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.
&&
LAT...LON 3499 8574 3524 8553 3537 8532 3569 8506
3580 8475 3575 8475 3574 8470 3570 8467
3573 8464 3571 8462 3565 8462 3544 8482
3535 8486 3529 8493 3530 8494 3519 8501
3513 8503 3504 8500 3502 8496 3499 8498
TIME...MOT...LOC 0059Z 250DEG 33KT 3565 8503 3540 8525 3527 8545 3504
8564
05/MASpecial weather statement, Nov 18, 8:21 PM EST, 0 minutes before
Special Weather Statement
National Weather Service Morristown TN
821 PM EST SAT NOV 18 2017
TNZ035-036-067>069-071-190215-
Anderson TN-Roane TN-Loudon TN-Knox TN-NW Blount TN-Morgan TN-
821 PM EST SAT NOV 18 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MORGAN...LOUDON...
ANDERSON...KNOX...NORTHERN BLOUNT AND ROANE COUNTIES UNTIL 915 PM
EST...
At 821 PM EST, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles north of Oliver Springs to near
Rockwood. Movement was east at 35 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations impacted include...
Knoxville, Oak Ridge, Maryville, Clinton, Lenoir City, Alcoa,
Kingston, Rockwood, Loudon, Farragut, Fairview, Oliver Springs,
Louisville, Plainview, Rockford, Midtown, Eagleton Village, Harriman,
Strawberry Plains and Halls.
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.
&&
LAT...LON 3566 8463 3573 8464 3572 8470 3618 8446
3617 8440 3622 8437 3618 8424 3624 8423
3622 8409 3628 8403 3617 8392 3617 8374
3610 8368 3597 8365 3589 8379 3578 8374
3564 8388 3562 8416 3567 8450 3561 8452
TIME...MOT...LOC 0121Z 263DEG 31KT 3617 8440 3583 8464
05/MAThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 18, 7:16 PM EST | Special Weather Statement | MRX | Bledsoe, Marion, Sequatchie | 44 min |
| Nov 18, 7:25 PM EST | Special Weather Statement | MRX | Scott | 65 min |
| Nov 18, 7:59 PM EST | Special Weather Statement | MRX | Hamilton, Marion, Meigs, Rhea | 61 min |
| Nov 18, 8:25 PM EST | Special Weather Statement | MRX | Bradley, McMinn, Monroe, Polk | 65 min |
| Nov 18, 9:09 PM EST | Special Weather Statement | MRX | Cocke, Grainger, Hamblen, Jefferson, Sevier | 51 min |
| Nov 18, 9:37 PM EST | Special Weather Statement | MRX | Greene, Hawkins, Sullivan, Washington | 53 min |
| Nov 18, 10:13 PM EST | Special Weather Statement | MRX | Carter, Johnson | 62 min |
| Nov 18, 10:16 PM EST | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan | 29 min |
| Nov 18, 10:00 PM EST | Special Weather Statement | MRX | Washington, City of Bristol | 60 min |
| Nov 18, 9:11 PM EST | Special Weather Statement | MRX | Cherokee, Clay | 64 min |
Nearby
Special Weather Statements in Tennessee, 2017Every special weather statement in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.