Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 7, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Mar 27, 2021, 4:23 AM CDT for 4 counties in Tennessee. It was in force for 39 min. 4 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
- Mar 27, 2021, 4:23 AM CDT (09:23 UTC)
- Expired
- Mar 27, 2021, 5:02 AM CDT
- In force
- 39 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Bledsoe County, TN, Hamilton County, TN, Marion County, TN, Sequatchie County, TN
The radar
The Northeast Alabama radar (KHTX), 65 km from the middle of the area, began a volume at 09:27 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 27, 4:30 AM CDT | HAIL 1 | Whitwell, TN | PICTURE OF HAIL THAT WAS LARGER THAN A PENNY. |
| Mar 27, 4:30 AM CDT | HAIL 1.5 | 1 N Whitwell, TN | |
| Mar 27, 4:35 AM CDT | HAIL 1.25 | 1 Nnw Cartwright, TN | FROM SOCIAL MEDIA PICTURE. |
| Mar 27, 4:40 AM CDT | HAIL 1 | 4 Ene Cartwright, TN | DETERMINED FROM A PICTURE OF HAIL THAT HAD FALLEN. IN THE SEQUATCHIE VALLEY/STONE CAVE AREA. TIME AND LOCATION APPROXIMATED BY RADAR. |
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, 9.4 hours before the alert went out and 146 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1974 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
710 WUUS54 KMRX 270923 SVRMRX TNC007-065-115-153-271015- /O.NEW.KMRX.SV.W.0007.210327T0923Z-210327T1015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Morristown TN 523 AM EDT Sat Mar 27 2021 The National Weather Service in Morristown has issued a * Severe Thunderstorm Warning for... Sequatchie County in east Tennessee... Southwestern Bledsoe County in east Tennessee... Central Marion County in east Tennessee... Northwestern Hamilton County in east Tennessee... * Until 615 AM EDT/515 AM CDT/. * At 523 AM EDT/423 AM CDT/, a severe thunderstorm was located near Jasper, moving northeast at 45 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Dunlap, Jasper, Soddy-Daisy, Signal Mountain, Whitwell, Kimball, Fairmount, Powells Crossroads, Martin Springs and Cartwright. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3499 8558 3511 8574 3554 8530 3537 8506 TIME...MOT...LOC 0923Z 223DEG 38KT 3512 8559 HAIL...1.00IN WIND...<50MPH $$ TD
3 follow-up statements
757
WWUS54 KMRX 270937
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
537 AM EDT Sat Mar 27 2021
TNC007-065-115-153-271015-
/O.CON.KMRX.SV.W.0007.000000T0000Z-210327T1015Z/
Sequatchie TN-Bledsoe TN-Marion TN-Hamilton TN-
537 AM EDT Sat Mar 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM
EDT/515 AM CDT/ FOR SEQUATCHIE...SOUTHWESTERN BLEDSOE...NORTHEASTERN
MARION AND NORTHWESTERN HAMILTON COUNTIES...
At 535 AM EDT/435 AM CDT/, a severe thunderstorm was located near
Whitwell, or 11 miles south of Dunlap, moving northeast at 45 mph.
The thunderstorm has strengthened and may be producing even larger
hail.
HAZARD...Two inch hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
Locations impacted include...
Dunlap, Soddy-Daisy, Signal Mountain, Whitwell, Fairmount, Powells
Crossroads, Martin Springs, Cartwright, Flat Top Mountain and North
Chickamauga Creek Gorge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3506 8548 3517 8568 3554 8530 3537 8506
TIME...MOT...LOC 0935Z 224DEG 39KT 3521 8545
HAIL...2.00IN
WIND...<50MPH
$$
TD988
WWUS54 KMRX 270952
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
552 AM EDT Sat Mar 27 2021
TNC115-271001-
/O.CAN.KMRX.SV.W.0007.000000T0000Z-210327T1015Z/
Marion TN-
552 AM EDT Sat Mar 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MARION COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3518 8531 3532 8551 3554 8530 3537 8506
TIME...MOT...LOC 0951Z 225DEG 39KT 3533 8526
$$
TNC007-065-153-271015-
/O.CON.KMRX.SV.W.0007.000000T0000Z-210327T1015Z/
Sequatchie TN-Bledsoe TN-Hamilton TN-
552 AM EDT Sat Mar 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM
EDT/515 AM CDT/ FOR CENTRAL SEQUATCHIE...SOUTHWESTERN BLEDSOE AND
NORTH CENTRAL HAMILTON COUNTIES...
At 551 AM EDT/451 AM CDT/, a severe thunderstorm was located 7 miles
northwest of Soddy-Daisy, or 7 miles east of Dunlap, moving northeast
at 45 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Dunlap, Soddy-Daisy, Fairmount, Sale Creek, Flat Top Mountain, Palio,
North Chickamauga Creek Gorge, Mowbray Mountain and Lone Oak.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3518 8531 3532 8551 3554 8530 3537 8506
TIME...MOT...LOC 0951Z 225DEG 39KT 3533 8526
HAIL...1.00IN
WIND...<50MPH
$$
TD132
WWUS54 KMRX 271002
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
602 AM EDT Sat Mar 27 2021
TNC007-065-153-271012-
/O.CAN.KMRX.SV.W.0007.000000T0000Z-210327T1015Z/
Sequatchie TN-Bledsoe TN-Hamilton TN-
602 AM EDT Sat Mar 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SEQUATCHIE...
SOUTHWESTERN BLEDSOE AND NORTH CENTRAL HAMILTON COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail and
heavy rain are still possible with this thunderstorm.
LAT...LON 3518 8531 3532 8551 3554 8530 3537 8506
TIME...MOT...LOC 1000Z 223DEG 38KT 3542 8516
$$
TDThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 4:03 AM CDT | Special Weather Statement | MRX | Marion, Sequatchie | 42 min |
| Mar 27, 4:47 AM CDT | Special Weather Statement | MRX | Hamilton | 43 min |
| Mar 27, 5:08 AM CDT | Severe Thunderstorm Warning | MRX | Bradley, Hamilton | 52 min |
| Mar 27, 5:41 AM CDT | Severe Thunderstorm Warning | MRX | Bradley, Polk | 49 min |
| Mar 27, 6:46 AM CDT | Special Weather Statement | MRX | Roane | 44 min |
| Mar 27, 6:58 AM CDT | Severe Thunderstorm Warning | MRX | Morgan | 47 min |
| Mar 27, 7:27 AM CDT | Special Weather Statement | MRX | Scott | 48 min |
| Mar 27, 7:37 AM CDT | Special Weather Statement | MRX | Knox | 38 min |
| Mar 27, 7:42 AM CDT | Severe Thunderstorm Warning | MRX | Scott | 26 min |
| Mar 27, 7:58 AM CDT | Special Weather Statement | MRX | Knox, Loudon | 47 min |
| Mar 27, 8:18 AM CDT | Severe Thunderstorm Warning | MRX | Grainger, Knox, Union | 42 min |
| Mar 27, 8:39 AM CDT | Severe Thunderstorm Warning | MRX | Knox, Sevier | 30 min |
| Mar 27, 8:43 AM CDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Hancock, Hawkins | 47 min |
| Mar 27, 9:00 AM CDT | Severe Thunderstorm Warning | MRX | Cocke, Hamblen, Jefferson | 45 min |
| Mar 27, 9:06 AM CDT | Severe Thunderstorm Warning | MRX | Campbell, Scott | 54 min |
| Mar 27, 9:14 AM CDT | Special Weather Statement | MRX | Anderson, Campbell, Morgan, Scott | 46 min |
| Mar 27, 9:30 AM CDT | Special Weather Statement | MRX | Hawkins | 45 min |
| Mar 27, 9:33 AM CDT | Severe Thunderstorm Warning | MRX | Greene | 42 min |
| Mar 27, 9:33 AM CDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne | 42 min |
| Mar 27, 9:36 AM CDT | Flash Flood Warning | MRX | Morgan, Scott | 4 hr |
| Mar 27, 9:41 AM CDT | Severe Thunderstorm Warning | MRX | Hawkins | 49 min |
| Mar 27, 9:51 AM CDT | Special Weather Statement | MRX | Anderson, Morgan | 39 min |
| Mar 27, 10:00 AM CDT | Special Weather Statement | MRX | Claiborne | 45 min |
| Mar 27, 10:07 AM CDT | Severe Thunderstorm Warning | MRX | Sullivan | 38 min |
| Mar 27, 10:11 AM CDT | Severe Thunderstorm Warning | MRX | Unicoi, Washington | 35 min |
| Mar 27, 10:20 AM CDT | Special Weather Statement | MRX | Grainger, Hamblen, Union | 40 min |
| Mar 27, 10:30 AM CDT | Severe Thunderstorm Warning | MRX | Claiborne, Hancock | 22 min |
| Mar 27, 10:32 AM CDT | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan, Unicoi, Washington | 43 min |
| Mar 27, 10:45 AM CDT | Areal Flood Advisory | MRX | Hawkins, Sullivan | 3 hr |
| Mar 27, 10:46 AM CDT | Special Weather Statement | MRX | Hamblen, Jefferson | 44 min |
| Mar 27, 10:48 AM CDT | Areal Flood Advisory | MRX | Campbell, Claiborne | 3 hr |
| Mar 27, 10:50 AM CDT | Areal Flood Advisory | MRX | Carter, Greene, Washington | 3 hr |
| Mar 27, 10:56 AM CDT | Special Weather Statement | MRX | Monroe | 49 min |
| Mar 27, 11:07 AM CDT | Areal Flood Advisory | MRX | Anderson, Knox | 3 hr |
| Mar 27, 11:12 AM CDT | Areal Flood Advisory | MRX | Claiborne, Hancock | 3 hr |
| Mar 27, 11:17 AM CDT | Special Weather Statement | MRX | Johnson | 43 min |
| Mar 27, 11:23 AM CDT | Special Weather Statement | MRX | Hawkins | 52 min |
| Mar 27, 12:01 PM CDT | Severe Thunderstorm Warning | MRX | Carter, Johnson, Sullivan, Unicoi, Washington | 44 min |
| Mar 27, 2:13 PM CDT | Wind Advisory | MRX | Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more | 23 hr |
| Mar 27, 2:34 PM CDT | Special Weather Statement | MRX | Campbell, Morgan | 41 min |
| Mar 27, 4:05 PM CDT | Areal Flood Warning | MRX | Anderson, Campbell, Claiborne, Morgan, Scott, Union | 3 hr |
| Mar 27, 4:38 PM CDT | Areal Flood Warning | MRX | Claiborne, Grainger, Hancock, Hawkins, Union | 3 hr |
| Mar 27, 4:49 PM CDT | Special Weather Statement | MRX | Anderson, Morgan | 41 min |
| Mar 27, 5:13 PM CDT | Areal Flood Warning | MRX | Blount, Sevier | 3 hr |
| Mar 27, 5:59 PM CDT | Special Weather Statement | MRX | Morgan, Scott | 46 min |
| Mar 27, 6:02 PM CDT | Special Weather Statement | MRX | Marion, Sequatchie | 43 min |
| Mar 27, 6:15 PM CDT | Severe Thunderstorm Warning | MRX | Campbell, Scott | 45 min |
| Mar 27, 6:34 PM CDT | Special Weather Statement | MRX | Hancock | 41 min |
| Mar 27, 6:36 PM CDT | Special Weather Statement | MRX | Meigs | 39 min |
| Mar 27, 6:40 PM CDT | Special Weather Statement | MRX | Campbell, Scott | 50 min |
| Mar 27, 6:43 PM CDT | Severe Thunderstorm Warning | MRX | Marion | 47 min |
| Mar 27, 6:52 PM CDT | Special Weather Statement | MRX | Campbell | 53 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.