Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 6, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Mar 26, 2021, 12:36 AM EDT for 7 counties in Tennessee. It was in force for 22 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
- Mar 26, 2021, 12:36 AM EDT (04:36 UTC)
- Expired
- Mar 26, 2021, 12:58 AM EDT
- In force
- 22 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Blount County, TN, Cocke County, TN, Greene County, TN, Hamblen County, TN, Hawkins County, TN, Jefferson County, TN, Sevier County, TN
The radar
The Knoxville radar (KMRX), 14 km from the middle of the area, began a volume at 04:35 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 |
|---|---|---|---|
| Mar 26, 12:51 AM EDT | HAIL 1 | 3 Ne Walland, TN |
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, 4.6 hours before the alert went out and 279 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
- 290 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 615 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 657 m²/s²
- 0-3 km storm-relative helicity
- 631 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 7.4
The text
As transmitted.
048
WUUS54 KMRX 260436
SVRMRX
TNC009-029-059-063-073-089-155-260530-
/O.NEW.KMRX.SV.W.0006.210326T0436Z-210326T0530Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
1236 AM EDT Fri Mar 26 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Southwestern Hawkins County in east Tennessee...
Eastern Blount County in east Tennessee...
Jefferson County in east Tennessee...
Northwestern Cocke County in east Tennessee...
Northwestern Greene County in east Tennessee...
Northern Sevier County in east Tennessee...
Hamblen County in east Tennessee...
* Until 130 AM EDT.
* At 1236 AM EDT, a severe thunderstorm was located 9 miles southeast
of Eagleton Village, or 10 miles east of Maryville, moving
northeast at 60 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Morristown, Sevierville, Jefferson City, Rogersville, Dandridge,
Pigeon Forge, Bean Station, White Pine, New Market and Baneberry.
This includes the following highways...
Interstate 40 in Tennessee between mile markers 405 and 430.
Interstate 81 in Tennessee between mile markers 1 and 37.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 200 AM EDT for east
Tennessee.
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3566 8400 3593 8372 3594 8368 3599 8366
3630 8333 3627 8331 3628 8326 3635 8327
3652 8309 3632 8281 3554 8384
TIME...MOT...LOC 0436Z 224DEG 77KT 3570 8381
HAIL...1.50IN
WIND...60MPH
$$
BW1 follow-up statement
736
WWUS54 KMRX 260458
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
1258 AM EDT Fri Mar 26 2021
TNC009-029-059-063-073-089-155-260508-
/O.CAN.KMRX.SV.W.0006.000000T0000Z-210326T0530Z/
Hawkins TN-Blount TN-Jefferson TN-Cocke TN-Greene TN-Sevier TN-
Hamblen TN-
1258 AM EDT Fri Mar 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HAWKINS...EASTERN
BLOUNT...JEFFERSON...NORTHWESTERN COCKE...NORTHWESTERN GREENE...
NORTHERN SEVIER AND HAMBLEN COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 3566 8400 3593 8372 3594 8368 3599 8366
3630 8333 3627 8331 3628 8326 3635 8327
3652 8309 3632 8281 3554 8384
TIME...MOT...LOC 0454Z 224DEG 77KT 3604 8340
$$
BWThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 10:52 PM EDT | River Flood Warning | MRX | Polk | 10 hr |
| Mar 25, 11:06 PM EDT | Special Weather Statement | MRX | Polk | 39 min |
| Mar 25, 11:43 PM EDT | Special Weather Statement | MRX | Bledsoe, Loudon, Rhea, Roane | 47 min |
| Mar 25, 11:43 PM EDT | Special Weather Statement | MRX | Monroe, Polk | 47 min |
| Mar 25, 11:46 PM EDT | Areal Flood Warning | MRX | Polk | 5 hr |
| Mar 25, 11:55 PM EDT | Severe Thunderstorm Warning | MRX | Blount, Monroe, Polk | 65 min |
| Mar 26, 12:14 AM EDT | Special Weather Statement | MRX | Anderson, Campbell, Morgan | 46 min |
| Mar 26, 1:01 AM EDT | Areal Flood Advisory | MRX | Grainger, Hamblen, Hancock, Hawkins, Jefferson, Knox and 1 more | 3 hr |
| Mar 26, 1:23 AM EDT | Special Weather Statement | MRX | Blount, Grainger, Hamblen, Jefferson, Knox, Loudon and 2 more | 52 min |
| Mar 26, 7:12 AM EDT | River Flood Warning | MRX | Cocke, Jefferson | 9 hr |
| Mar 26, 7:10 PM EDT | Flash Flood Watch | MRX | Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more | 44 hr |
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.