Alert archive / Tennessee / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 124, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 30, 2018, 6:22 PM CDT for 6 counties in Tennessee. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 30, 2018, 6:22 PM CDT (23:22 UTC)
- Expired
- Jun 30, 2018, 7:16 PM CDT
- In force
- 54 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Bledsoe County, TN, Bradley County, TN, Hamilton County, TN, Meigs County, TN, Rhea County, TN, Sequatchie County, TN
The radar
The Northeast Alabama radar (KHTX), 107 km from the middle of the area, began a volume at 23:25 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.4 hours before the alert went out and 232 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
- 476 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 754 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 30, 2:35 PM CDT, 3 hours 47 minutes earlier.
Area forecast discussion, Jun 30, 2:35 PM CDT, 3 hours 47 minutes before
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</html>Hazardous weather outlook, Jun 30, 2:37 PM CDT, 3 hours 45 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 337 PM EDT Sat Jun 30 2018 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-011945- 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- 337 PM EDT Sat Jun 30 2018 /237 PM CDT Sat Jun 30 2018/ This Hazardous Weather Outlook is for portions of Southwest North Carolina...East Tennessee and Southwest Virginia. .DAY ONE...This Afternoon and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday There is a chance of thunderstorms each day from Sunday through Friday, especially across southeast Tennessee and southwest North Carolina. The thunderstorms will be mainly during the afternoon and evening hours with a few storms becoming strong to possibly severe each day. The main concerns will be strong and gusty winds, frequent lightning and isolated flooding from the heavy rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. TD/SR
In the hours before
Special weather statement, Jun 30, 4:47 PM CDT, 1 hour 35 minutes before
Special Weather Statement
National Weather Service Morristown TN
547 PM EDT SAT JUN 30 2018
TNZ101-102-302230-
West Polk TN-East Polk TN-
547 PM EDT SAT JUN 30 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN POLK COUNTY UNTIL
630 PM EDT...
At 547 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles south of Benton, moving southwest at 10 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Big Frog Mountain, Parksville and Conasauga.
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 3499 8477 3505 8476 3508 8474 3509 8474
3510 8475 3512 8473 3513 8465 3513 8457
3499 8448
TIME...MOT...LOC 2147Z 063DEG 10KT 3502 8461Special weather statement, Jun 30, 5:16 PM CDT, 1 hour 6 minutes before
Special Weather Statement
National Weather Service Morristown TN
616 PM EDT SAT JUN 30 2018
TNZ084-085-100-302300-
Bradley TN-Meigs TN-McMinn TN-
616 PM EDT SAT JUN 30 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BRADLEY...
SOUTHWESTERN MEIGS AND SOUTHWESTERN MCMINN COUNTIES UNTIL 700 PM
EDT...
At 616 PM EDT, Doppler radar was tracking a strong thunderstorm near
Charleston, or 8 miles southwest of Athens, moving west at 10 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Cleveland, Charleston, Calhoun, Riceville, Hillsview, Hopewell, Big
Spring and Tasso.
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 3546 8498 3546 8497 3545 8496 3544 8494
3544 8491 3546 8490 3546 8465 3530 8457
3527 8465 3527 8467 3526 8467 3517 8490
TIME...MOT...LOC 2216Z 068DEG 9KT 3536 8470Special weather statement, Jun 30, 5:28 PM CDT, 54 minutes before
Special Weather Statement
National Weather Service Morristown TN
628 PM EDT SAT JUN 30 2018
NCZ060-302315-
Cherokee NC-
628 PM EDT SAT JUN 30 2018
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CHEROKEE COUNTY UNTIL 715
PM EDT...
At 628 PM EDT, Doppler radar was tracking a strong thunderstorm near
Murphy, moving northwest at 10 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Murphy, Hiawasse Dam, Violet, Culberson, Unaka and Hot House.
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 3499 8417 3502 8432 3510 8431 3525 8425
3527 8423 3526 8421 3524 8419 3524 8417
3513 8395 3499 8402
TIME...MOT...LOC 2228Z 113DEG 9KT 3508 8408Special weather statement, Jun 30, 5:34 PM CDT, 48 minutes before
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<p id="message1">
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</html>Special weather statement, Jun 30, 5:55 PM CDT, 27 minutes before
Special Weather Statement
National Weather Service Morristown TN
655 PM EDT SAT JUN 30 2018
TNZ084-099-100-302330-
Bradley TN-Hamilton TN-Meigs TN-
655 PM EDT SAT JUN 30 2018
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BRADLEY...SOUTHERN MEIGS
AND SOUTHEASTERN HAMILTON COUNTIES UNTIL 730 PM EDT...
At 655 PM EDT, Doppler radar was tracking a strong thunderstorm over
Cleveland, moving west at 10 mph.
Half inch hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Cleveland, Charleston, South Cleveland, East Cleveland, Wildwood
Lake, Calhoun, McDonald, Waterville, Hopewell and Tasso.
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 3508 8506 3537 8504 3529 8476 3529 8474
3528 8474 3528 8475 3526 8474 3511 8477
TIME...MOT...LOC 2255Z 097DEG 9KT 3522 8485The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 4:47 PM CDT | Special Weather Statement | MRX | Polk | 43 min |
| Jun 30, 5:16 PM CDT | Special Weather Statement | MRX | McMinn | 44 min |
| Jun 30, 5:34 PM CDT | Special Weather Statement | MRX | Bradley | 26 min |
| Jun 30, 5:55 PM CDT | Special Weather Statement | MRX | Bradley | 35 min |
| Jun 30, 6:52 PM CDT | Special Weather Statement | MRX | Roane | 38 min |
| Jun 30, 5:28 PM CDT | Special Weather Statement | MRX | Cherokee | 47 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2018Every severe thunderstorm warning 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.