Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 77, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 21, 2021, 6:50 PM EDT for Blount County, Monroe County, Tennessee. It was in force for 40 min. 2 reports 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
- Jun 21, 2021, 6:50 PM EDT (22:50 UTC)
- Expired
- Jun 21, 2021, 7:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Blount County, TN, Monroe County, TN
The radar
The Knoxville radar (KMRX), 93 km from the middle of the area, began a volume at 22:51 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 |
|---|---|---|---|
| Jun 21, 7:06 PM EDT | TSTM WND DMG | 2 N Mount Vernon, TN | REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF. |
| Jun 21, 7:13 PM EDT | TSTM WND DMG | 5 Nnw Talassee, TN | TREES DOWN ACROSS THE 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 12:00Z, 10.8 hours before the alert went out and 241 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
- 1530 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 919 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 9.6
The text
As transmitted.
214
WUUS54 KMRX 212250
SVRMRX
TNC009-123-212330-
/O.NEW.KMRX.SV.W.0077.210621T2250Z-210621T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
650 PM EDT Mon Jun 21 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Blount County in east Tennessee...
Monroe County in east Tennessee...
* Until 730 PM EDT.
* At 649 PM EDT, severe thunderstorms were located along a line
extending from 10 miles southwest of Maryville to 10 miles east of
Etowah, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Maryville, Smoky Mountains-Twentymile Creek, Smoky
Mountains-Fontana Area, Vonore, Tellico Plains, Townsend, Fort
Loudon State Park, Tariffville, McGee Carson Peninsula and Walland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3533 8440 3542 8443 3562 8423 3561 8419
3563 8415 3566 8413 3569 8416 3572 8414
3575 8372 3569 8367 3569 8366 3557 8366
3556 8377 3545 8397 3541 8402 3537 8401
3535 8404 3531 8404 3530 8402 3527 8406
TIME...MOT...LOC 2249Z 266DEG 26KT 3563 8409 3533 8433
HAIL...<.75IN
WIND...60MPH
$$
DH1 follow-up statement
763
WWUS54 KMRX 212319
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
719 PM EDT Mon Jun 21 2021
TNC009-123-212330-
/O.CON.KMRX.SV.W.0077.000000T0000Z-210621T2330Z/
Blount TN-Monroe TN-
719 PM EDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL BLOUNT AND SOUTHEASTERN MONROE COUNTIES...
At 718 PM EDT, severe thunderstorms were located along a line
extending from 9 miles southeast of Maryville to 13 miles west of
Town Of Santeetlah, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Smoky Mountains-Twentymile Creek, Smoky Mountains-Fontana Area,
Townsend, Citico Beach, Citico, Talassee, Walland, Cades Cove, Happy
Valley and Roundtop Mountain State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3533 8425 3541 8421 3554 8412 3554 8409
3559 8407 3558 8406 3559 8403 3574 8391
3575 8372 3569 8367 3569 8366 3557 8366
3556 8377 3545 8397 3541 8402 3537 8401
3535 8404 3531 8404 3530 8402 3527 8406
TIME...MOT...LOC 2318Z 266DEG 26KT 3564 8387 3534 8411
HAIL...<.75IN
WIND...60MPH
$$
DHThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 4:21 PM EDT | Special Weather Statement | MRX | Morgan | 39 min |
| Jun 21, 4:29 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Morgan | 46 min |
| Jun 21, 4:40 PM EDT | Special Weather Statement | MRX | Grainger | 50 min |
| Jun 21, 4:48 PM EDT | Special Weather Statement | MRX | Union | 42 min |
| Jun 21, 4:55 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Morgan, Roane, Scott | 65 min |
| Jun 21, 5:01 PM EDT | Special Weather Statement | MRX | Claiborne | 44 min |
| Jun 21, 5:05 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Morgan, Scott | 40 min |
| Jun 21, 5:08 PM EDT | Severe Thunderstorm Warning | MRX | Grainger, Hancock, Hawkins | 67 min |
| Jun 21, 5:12 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne, Union | 48 min |
| Jun 21, 5:29 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Grainger, Knox, Union | 46 min |
| Jun 21, 5:34 PM EDT | Special Weather Statement | MRX | Bradley, Hamilton, Marion, Sequatchie | 41 min |
| Jun 21, 5:36 PM EDT | Severe Thunderstorm Warning | MRX | Grainger, Jefferson, Knox | 39 min |
| Jun 21, 5:42 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne | 48 min |
| Jun 21, 5:46 PM EDT | Special Weather Statement | MRX | Loudon | 44 min |
| Jun 21, 5:53 PM EDT | Severe Thunderstorm Warning | MRX | Hancock | 41 min |
| Jun 21, 5:57 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Hancock | 48 min |
| Jun 21, 6:02 PM EDT | Severe Thunderstorm Warning | MRX | Blount, Loudon, McMinn, Monroe, Roane | 43 min |
| Jun 21, 6:02 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Cocke, Grainger, Greene, Hamblen, Hawkins and 1 more | 58 min |
| Jun 21, 6:05 PM EDT | Special Weather Statement | MRX | McMinn | 40 min |
| Jun 21, 6:25 PM EDT | Special Weather Statement | MRX | Bradley, McMinn | 65 min |
| Jun 21, 6:33 PM EDT | Special Weather Statement | MRX | Anderson | 57 min |
| Jun 21, 6:54 PM EDT | Severe Thunderstorm Warning | MRX | Blount, Knox, Sevier | 51 min |
| Jun 21, 7:19 PM EDT | Severe Thunderstorm Warning | MRX | Morgan, Rhea, Roane | 56 min |
| Jun 21, 7:41 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Blount, Knox, Loudon, Morgan, Roane | 49 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2021Every severe thunderstorm warning in 2021
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.