Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 93, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 1, 2021, 2:10 AM EDT for Blount County, Loudon County, Monroe County, Tennessee. It was in force for 65 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
- Aug 1, 2021, 2:10 AM EDT (06:10 UTC)
- Expired
- Aug 1, 2021, 3:15 AM EDT
- In force
- 65 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Blount County, TN, Loudon County, TN, Monroe County, TN
The radar
The Knoxville radar (KMRX), 92 km from the middle of the area, began a volume at 06:11 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 |
|---|---|---|---|
| Aug 1, 2:40 AM EDT | TSTM WND DMG | 1 Se Madisonville, TN | 2 TREES DOWN NEAR BALLPLAY ROAD. |
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, 6.2 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
- 1106 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1447 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.3
The text
As transmitted.
367
WUUS54 KMRX 010610
SVRMRX
TNC009-105-123-010715-
/O.NEW.KMRX.SV.W.0093.210801T0610Z-210801T0715Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
210 AM EDT Sun Aug 1 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Southern Loudon County in east Tennessee...
Southern Blount County in east Tennessee...
Monroe County in east Tennessee...
* Until 315 AM EDT.
* At 210 AM EDT, a severe thunderstorm was located near Sweetwater,
moving east at 30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Sweetwater, Loudon, Madisonville, Smoky Mountains-Twentymile Creek,
Smoky Mountains-Fontana Area, Vonore, Greenback, Philadelphia,
Townsend and Fort Loudon State Park.
This includes Interstate 75 in Tennessee between mile markers 61 and
72.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3552 8447 3561 8453 3572 8451 3574 8447
3569 8368 3569 8366 3563 8366 3556 8371
3556 8377 3552 8383 3552 8388 3547 8392
3543 8400 3541 8402 3537 8401 3535 8404
3530 8402 3525 8409
TIME...MOT...LOC 0610Z 285DEG 26KT 3564 8443
HAIL...0.75IN
WIND...60MPH
$$1 follow-up statement
624
WWUS54 KMRX 010644
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
244 AM EDT Sun Aug 1 2021
TNC009-105-123-010715-
/O.CON.KMRX.SV.W.0093.000000T0000Z-210801T0715Z/
Loudon TN-Blount TN-Monroe TN-
244 AM EDT Sun Aug 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM EDT
FOR SOUTHEASTERN LOUDON...SOUTHERN BLOUNT AND CENTRAL MONROE
COUNTIES...
At 243 AM EDT, a severe thunderstorm was located 8 miles east of
Madisonville, moving east at 30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Madisonville, Smoky Mountains-Twentymile Creek, Smoky
Mountains-Fontana Area, Vonore, Greenback, Townsend, Fort Loudon
State Park, Tariffville, McGee Carson Peninsula and Happy Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3548 8441 3565 8424 3569 8368 3569 8366
3563 8366 3556 8371 3556 8377 3552 8383
3552 8388 3547 8392 3543 8400 3541 8402
3537 8401 3535 8404 3530 8402 3525 8409
TIME...MOT...LOC 0643Z 282DEG 23KT 3552 8421
HAIL...0.75IN
WIND...60MPH
$$The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 1:10 AM EDT | Severe Thunderstorm Warning | MRX | Bledsoe, Marion, Sequatchie | 65 min |
| Aug 1, 1:30 AM EDT | Special Weather Statement | MRX | Meigs, Rhea | 30 min |
| Aug 1, 1:40 AM EDT | Special Weather Statement | MRX | Loudon, Monroe | 50 min |
| Aug 1, 2:06 AM EDT | Special Weather Statement | MRX | Bradley, Hamilton, Meigs, Rhea | 39 min |
| Aug 1, 4:44 AM EDT | Special Weather Statement | MRX | Johnson | 31 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.