Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 29, NWS Morristown, TN

March 27, 2021Carter County, Johnson County, Sullivan County, Tennessee; Scott County, Washington County, City of Bristol, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Mar 27, 2021, 8:31 PM EDT for Carter County, Johnson County, Sullivan County, Tennessee; Scott County, Washington County, City of Bristol, Virginia. It was in force for 44 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 27, 2021, 8:31 PM EDT (00:31 UTC)
Expired: Mar 27, 2021, 9:15 PM EDT
In force: 44 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carter County, TN, Johnson County, TN, Sullivan County, TN, City of Bristol, VA, Scott County, VA, Washington County, VA

The radar

The Knoxville radar (KMRX), 102 km from the middle of the area, began a volume at 00:30 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, 8:42 PM EDT	HAIL 1	2 Sse Hiltons, VA	A FEW TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

591 
WUUS54 KMRX 280031
SVRMRX
TNC019-091-163-VAC169-191-520-280115-
/O.NEW.KMRX.SV.W.0029.210328T0031Z-210328T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
831 PM EDT Sat Mar 27 2021

The National Weather Service in Morristown has issued a

* Severe Thunderstorm Warning for...
  Sullivan County in east Tennessee...
  Northwestern Johnson County in east Tennessee...
  Northeastern Carter County in east Tennessee...
  The City of Bristol in southwestern Virginia...
  Southeastern Scott County in southwestern Virginia...
  Southwestern Washington County in southwestern Virginia...

* Until 915 PM EDT.

* At 830 PM EDT, a severe thunderstorm was located over Weber City,
  or over Gate City, moving east at 55 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Kingsport, Bristol Tn, Bristol Va, Abingdon, Gate City, Weber City,
  Walnut Hill, Colonial Heights, Bluff City and Blountville.

This includes the following highways...
 Interstate 26 in Tennessee between mile markers 1 and 3.
 Interstate 81 in Tennessee between mile markers 62 and 75.
 Interstate 81 in Virginia between mile markers 1 and 22.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3643 8192 3652 8262 3653 8261 3658 8262
      3657 8260 3658 8260 3659 8261 3660 8265
      3672 8264 3674 8234 3671 8233 3674 8228
      3676 8189
TIME...MOT...LOC 0030Z 269DEG 47KT 3662 8256 

HAIL...1.00IN
WIND...60MPH
 
$$

Diegan

3 follow-up statements

368 
WWUS54 KMRX 280048
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
848 PM EDT Sat Mar 27 2021

TNC019-091-280057-
/O.CAN.KMRX.SV.W.0029.000000T0000Z-210328T0115Z/
Johnson TN-Carter TN-
848 PM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN JOHNSON AND
NORTHEASTERN CARTER COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3657 8191 3657 8193 3655 8193 3651 8198
      3654 8243 3673 8234 3671 8233 3674 8228
      3676 8189
TIME...MOT...LOC 0047Z 269DEG 47KT 3662 8227 

$$

TNC163-VAC169-191-520-280115-
/O.CON.KMRX.SV.W.0029.000000T0000Z-210328T0115Z/
Sullivan TN-City of Bristol VA-Scott VA-Washington VA-
848 PM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHEASTERN SULLIVAN...SOUTHEASTERN SCOTT AND SOUTHWESTERN
WASHINGTON COUNTIES AND THE CITY OF BRISTOL...

At 847 PM EDT, a severe thunderstorm was located near Walnut Hill, or
near Bristol Tn, moving east at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Bristol Tn, Bristol Va, Abingdon, Walnut Hill, South Holston Dam,
Hilander Park, Benhams, Harr, Blountville and Emory-Meadow View.

This includes the following highways...
 Interstate 81 in Tennessee between mile markers 67 and 75.
 Interstate 81 in Virginia between mile markers 1 and 22.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3657 8191 3657 8193 3655 8193 3651 8198
      3654 8243 3673 8234 3671 8233 3674 8228
      3676 8189
TIME...MOT...LOC 0047Z 269DEG 47KT 3662 8227 

HAIL...1.00IN
WIND...60MPH
 
$$

Diegan

559 
WWUS54 KMRX 280100
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
900 PM EDT Sat Mar 27 2021

VAC169-280110-
/O.CAN.KMRX.SV.W.0029.000000T0000Z-210328T0115Z/
Scott VA-
900 PM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SCOTT 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 3657 8191 3657 8193 3655 8193 3652 8198
      3655 8224 3669 8220 3671 8190
TIME...MOT...LOC 0100Z 269DEG 47KT 3662 8206 

$$

TNC163-VAC191-520-280115-
/O.CON.KMRX.SV.W.0029.000000T0000Z-210328T0115Z/
Sullivan TN-City of Bristol VA-Washington VA-
900 PM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHEASTERN SULLIVAN AND SOUTHWESTERN WASHINGTON COUNTIES AND
THE CITY OF BRISTOL...

At 900 PM EDT, a severe thunderstorm was located near Bristol Va,
moving east at 55 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Bristol Tn, Bristol Va, Abingdon, Hilander Park and Harr. 

This includes Interstate 81 in Virginia between mile markers 2 and
18.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3657 8191 3657 8193 3655 8193 3652 8198
      3655 8224 3669 8220 3671 8190
TIME...MOT...LOC 0100Z 269DEG 47KT 3662 8206 

HAIL...0.75IN
WIND...60MPH
 
$$

Diegan

141 
WWUS54 KMRX 280108
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
908 PM EDT Sat Mar 27 2021

TNC163-VAC191-520-280117-
/O.EXP.KMRX.SV.W.0029.000000T0000Z-210328T0115Z/
Sullivan TN-City of Bristol VA-Washington VA-
908 PM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SULLIVAN AND
SOUTHWESTERN WASHINGTON COUNTIES AND THE CITY OF BRISTOL WILL EXPIRE
AT 915 PM EDT...
                
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 will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 3657 8191 3657 8193 3655 8193 3652 8198
      3655 8224 3669 8220 3671 8190
TIME...MOT...LOC 0107Z 269DEG 47KT 3662 8197 

$$

Diegan

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 27, 8:05 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Grainger, Hancock, Union	40 min
Mar 27, 8:09 PM EDT	Flash Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 27, 8:11 PM EDT	Special Weather Statement	MRX	Sequatchie	49 min
Mar 27, 8:12 PM EDT	Special Weather Statement	MRX	Sequatchie	48 min
Mar 27, 8:36 PM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Hancock, Hawkins, Sullivan, Union	3 hr
Mar 27, 8:43 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hamblen, Hancock, Hawkins	47 min
Mar 27, 8:55 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Hamilton, Marion, Rhea, Sequatchie	3 hr
Mar 27, 8:57 PM EDT	Special Weather Statement	MRX	Sullivan	48 min
Mar 27, 9:02 PM EDT	River Flood Warning	MRX	Morgan, Roane	24 hr
Mar 27, 9:10 PM EDT	Special Weather Statement	MRX	Jefferson	50 min
Mar 27, 9:21 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hamblen, Hawkins, Washington	39 min
Mar 27, 9:22 PM EDT	Special Weather Statement	MRX	Loudon	38 min
Mar 27, 9:25 PM EDT	Special Weather Statement	MRX	Loudon	50 min
Mar 27, 9:42 PM EDT	Special Weather Statement	MRX	Knox	48 min
Mar 27, 9:48 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Greene, Unicoi, Washington	24 min
Mar 27, 9:50 PM EDT	Special Weather Statement	MRX	Johnson	40 min
Mar 27, 10:00 PM EDT	Special Weather Statement	MRX	Greene, Unicoi	45 min
Mar 27, 10:19 PM EDT	Areal Flood Advisory	MRX	Carter, Greene, Hawkins, Sullivan, Washington	3 hr
Mar 27, 10:32 PM EDT	Special Weather Statement	MRX	Anderson, Campbell, Morgan	43 min
Mar 27, 11:13 PM EDT	Flash Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 27, 11:37 PM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Hancock, Hawkins, Sullivan, Union	3 hr
Mar 28, 12:14 AM EDT	Special Weather Statement	MRX	Claiborne, Grainger, Union	46 min
Mar 28, 12:18 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Grainger, Union	57 min
Mar 28, 12:35 AM EDT	Special Weather Statement	MRX	Campbell, Morgan, Scott	40 min
Mar 28, 12:41 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen	34 min
Mar 28, 12:55 AM EDT	Special Weather Statement	MRX	Hamblen, Hancock, Hawkins	50 min
Mar 28, 1:14 AM EDT	Flash Flood Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	3 hr
Mar 28, 1:18 AM EDT	Special Weather Statement	MRX	Campbell, Claiborne, Union	42 min
Mar 28, 1:39 AM EDT	Special Weather Statement	MRX	Sullivan	51 min
Mar 28, 1:43 AM EDT	Areal Flood Warning	MRX	Carter, Johnson, Sullivan, Washington	3 hr
Mar 28, 1:47 AM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins, Sullivan, Washington	43 min
Mar 28, 2:11 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 28, 2:18 AM EDT	Severe Thunderstorm Warning	MRX	Johnson, Sullivan	42 min
Mar 28, 2:58 AM EDT	Flash Flood Warning	MRX	Carter, Johnson, Sullivan, Washington	3 hr
Mar 28, 3:12 AM EDT	Special Weather Statement	MRX	Morgan, Scott	48 min
Mar 28, 4:04 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	7 hr
Mar 28, 4:09 AM EDT	Special Weather Statement	MRX	Campbell, Morgan, Scott	51 min
Mar 28, 4:16 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Sullivan	3 hr
Mar 28, 4:27 AM EDT	Special Weather Statement	MRX	Bledsoe	63 min
Mar 28, 4:58 AM EDT	Special Weather Statement	MRX	Anderson, Campbell, Claiborne, Morgan	47 min
Mar 28, 5:03 AM EDT	Special Weather Statement	MRX	Meigs, Rhea, Roane	42 min
Mar 28, 5:07 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	5 hr
Mar 28, 5:15 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Union	17 min
Mar 28, 5:26 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea, Sequatchie	71 min
Mar 28, 5:38 AM EDT	Special Weather Statement	MRX	Grainger, Hancock, Union	52 min
Mar 28, 5:43 AM EDT	Special Weather Statement	MRX	Anderson, Knox	47 min
Mar 28, 5:43 AM EDT	Severe Thunderstorm Warning	MRX	Marion	47 min
Mar 28, 5:48 AM EDT	Special Weather Statement	MRX	Meigs, Rhea, Roane	42 min
Mar 28, 6:08 AM EDT	Special Weather Statement	MRX	Hawkins	52 min
Mar 28, 6:19 AM EDT	Special Weather Statement	MRX	Hamilton, McMinn	41 min
Mar 28, 6:34 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen, Hancock, Hawkins, Jefferson, Sevier	41 min
Mar 28, 6:36 AM EDT	Flash Flood Warning	MRX	Bledsoe, Marion, Rhea, Sequatchie	6 hr
Mar 28, 6:40 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Anderson, Knox, Loudon, Morgan, Roane, Union	5 hr
Mar 28, 6:43 AM EDT	Special Weather Statement	MRX	Knox, Loudon, Meigs, Roane	47 min
Mar 28, 6:51 AM EDT	Special Weather Statement	MRX	Bradley, McMinn, Monroe, Polk	39 min
Mar 28, 7:08 AM EDT	Flash Flood Warning	MRX	Sullivan	6 hr
Mar 28, 7:15 AM EDT	Special Weather Statement	MRX	Cocke, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	45 min
Mar 28, 7:17 AM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Rhea, Sequatchie	6 hr
Mar 28, 7:27 AM EDT	Special Weather Statement	MRX	Blount, Sevier	33 min
Mar 28, 7:27 AM EDT	Special Weather Statement	MRX	Polk	63 min
Mar 28, 7:34 AM EDT	River Flood Warning	MRX	Claiborne, Grainger, Hancock	51 hr
Mar 28, 7:41 AM EDT	River Flood Warning	MRX	Claiborne, Union	52 hr
Mar 28, 7:46 AM EDT	River Flood Warning	MRX	Hawkins, Sullivan	35 hr
Mar 28, 7:49 AM EDT	Flash Flood Warning	MRX	Grainger, Hamblen, Jefferson, Knox, Sevier	5 hr
Mar 28, 7:52 AM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, Polk	5 hr
Mar 28, 8:00 AM EDT	Special Weather Statement	MRX	Carter, Cocke, Greene, Hawkins, Sullivan, Unicoi and 1 more	45 min
Mar 28, 8:03 AM EDT	Flash Flood Warning	MRX	Blount, Knox, Loudon, McMinn, Monroe, Polk and 1 more	4 hr
Mar 28, 8:21 AM EDT	Special Weather Statement	MRX	Sevier	24 min
Mar 28, 8:26 AM EDT	Flash Flood Warning	MRX	Blount, Cocke, Sevier	5 hr
Mar 28, 8:43 AM EDT	Flash Flood Warning	MRX	Greene, Hawkins, Unicoi, Washington	4 hr
Mar 28, 8:45 AM EDT	Flash Flood Warning	MRX	Carter, Johnson	4 hr
Mar 28, 9:05 AM EDT	River Flood Warning	MRX	Hancock	23 hr
Mar 28, 9:32 AM EDT	River Flood Warning	MRX	Cocke	20 hr
Mar 28, 10:08 AM EDT	Areal Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	21 hr
Mar 28, 11:07 AM EDT	River Flood Warning	MRX	Hancock	33 hr
Mar 28, 11:10 AM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	21 hr
Mar 28, 11:11 AM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	20 hr
Mar 28, 11:43 AM EDT	Areal Flood Warning	MRX	Anderson, Knox, Loudon, Morgan, Roane	3 hr
Mar 28, 12:38 PM EDT	Areal Flood Warning	MRX	Greene, Hawkins, Unicoi, Washington	3 hr
Mar 28, 12:43 PM EDT	Areal Flood Warning	MRX	Carter, Johnson	5 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021 Severe Thunderstorm Warnings in Virginia, 2021 Every 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.