Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 34, NWS Morristown, TN

March 28, 20214 counties in Tennessee; Scott County, Virginia

NWS Morristown, TN issued this severe thunderstorm warning at Mar 28, 2021, 1:47 AM EDT for 4 counties in Tennessee; Scott County, Virginia. It was in force for 43 min. 3 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 28, 2021, 1:47 AM EDT (05:47 UTC)
Expired: Mar 28, 2021, 2:30 AM EDT
In force: 43 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Greene County, TN, Hawkins County, TN, Sullivan County, TN, Washington County, TN, Scott County, VA

The radar

The Knoxville radar (KMRX), 92 km from the middle of the area, began a volume at 05:51 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
Mar 28, 2:12 AM EDT	HAIL 0.75	1 E Kingsport, TN	REPORT FROM MPING: DIME (0.75 IN.).
Mar 28, 2:14 AM EDT	HAIL 0.7	1 E Kingsport, TN
Mar 28, 2:16 AM EDT	TSTM WND DMG	2 Ese Mount Carmel, TN	SEVERAL 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, 5.8 hours before the alert went out and 230 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.

278 
WUUS54 KMRX 280547
SVRMRX
TNC059-073-163-179-VAC169-280630-
/O.NEW.KMRX.SV.W.0034.210328T0547Z-210328T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
147 AM EDT Sun Mar 28 2021

The National Weather Service in Morristown has issued a

* Severe Thunderstorm Warning for...
  Western Sullivan County in east Tennessee...
  Northeastern Hawkins County in east Tennessee...
  Northern Washington County in east Tennessee...
  Northeastern Greene County in east Tennessee...
  Southeastern Scott County in southwestern Virginia...

* Until 230 AM EDT.

* At 147 AM EDT, a severe thunderstorm was located near
  Surgoinsville, or 11 miles west of Kingsport, 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...
  Johnson City, Kingsport, Bristol Tn, Rogersville, Gate City,
  Surgoinsville, Weber City, Spurgeon, Colonial Heights and Gray.

This includes the following highways...
 Interstate 26 in Tennessee between mile markers 1 and 17.
 Interstate 81 in Tennessee between mile markers 33 and 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3642 8224 3642 8225 3640 8228 3640 8230
      3639 8230 3629 8292 3652 8298 3671 8234
TIME...MOT...LOC 0547Z 252DEG 47KT 3647 8275 

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

SR

3 follow-up statements

886 
WWUS54 KMRX 280608
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
208 AM EDT Sun Mar 28 2021

TNC059-280617-
/O.CAN.KMRX.SV.W.0034.000000T0000Z-210328T0630Z/
Greene TN-
208 AM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GREENE 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 3644 8225 3641 8235 3639 8263 3641 8263
      3642 8265 3658 8272 3671 8234
TIME...MOT...LOC 0607Z 252DEG 47KT 3655 8243 

$$

TNC073-163-179-VAC169-280630-
/O.CON.KMRX.SV.W.0034.000000T0000Z-210328T0630Z/
Sullivan TN-Hawkins TN-Washington TN-Scott VA-
208 AM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR WESTERN SULLIVAN...NORTHEASTERN HAWKINS...NORTH CENTRAL
WASHINGTON AND SOUTHEASTERN SCOTT COUNTIES...

At 207 AM EDT, a severe thunderstorm was located near Colonial
Heights, or near Kingsport, 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...
Johnson City, Kingsport, Bristol Tn, Weber City, Gray, Oak Grove,
Spurgeon, Colonial Heights, Church Hill and Mount Carmel.

This includes the following highways...
 Interstate 26 in Tennessee between mile markers 1 and 13.
 Interstate 81 in Tennessee between mile markers 50 and 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3644 8225 3641 8235 3639 8263 3641 8263
      3642 8265 3658 8272 3671 8234
TIME...MOT...LOC 0607Z 252DEG 47KT 3655 8243 

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

SR

783 
WWUS54 KMRX 280610 CCA
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
210 AM EDT Sun Mar 28 2021

TNC059-280617-
/O.COR.KMRX.SV.W.0034.000000T0000Z-210328T0630Z/
Greene TN-
210 AM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR GREENE 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 3644 8225 3641 8235 3639 8263 3641 8263
      3642 8265 3658 8272 3671 8234
TIME...MOT...LOC 0607Z 252DEG 47KT 3655 8243 

$$

TNC073-163-179-VAC169-280630-
/O.COR.KMRX.SV.W.0034.000000T0000Z-210328T0630Z/
Sullivan TN-Hawkins TN-Washington TN-Scott VA-
210 AM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR WESTERN SULLIVAN...NORTHEASTERN HAWKINS...NORTH CENTRAL
WASHINGTON AND SOUTHEASTERN SCOTT COUNTIES...

At 209 AM EDT, a severe thunderstorm was located 7 miles west of
Walnut Hill, or 8 miles east of Kingsport, moving east at 55 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...
Johnson City, Kingsport, Bristol Tn, Weber City, Gray, Oak Grove,
Spurgeon, Colonial Heights, Church Hill and Mount Carmel.

This includes the following highways...
 Interstate 26 in Tennessee between mile markers 1 and 13.
 Interstate 81 in Tennessee between mile markers 50 and 72.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3644 8225 3641 8235 3639 8263 3641 8263
      3642 8265 3658 8272 3671 8234
TIME...MOT...LOC 0607Z 252DEG 47KT 3655 8243 

HAIL...1.50IN
WIND...60MPH
 
$$

SR

972 
WWUS54 KMRX 280621
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
221 AM EDT Sun Mar 28 2021

TNC073-179-280631-
/O.CAN.KMRX.SV.W.0034.000000T0000Z-210328T0630Z/
Hawkins TN-Washington TN-
221 AM EDT Sun Mar 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HAWKINS AND NORTH
CENTRAL WASHINGTON 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 3644 8225 3641 8235 3653 8246 3665 8251
      3671 8234
TIME...MOT...LOC 0621Z 252DEG 47KT 3661 8221 

$$

TNC163-VAC169-280630-
/O.CON.KMRX.SV.W.0034.000000T0000Z-210328T0630Z/
Sullivan TN-Scott VA-
221 AM EDT Sun Mar 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR CENTRAL SULLIVAN AND SOUTHEASTERN SCOTT COUNTIES...

At 221 AM EDT, a severe thunderstorm was located over Bristol Va,
moving east at 55 mph.

HAZARD...60 mph wind gusts and half dollar 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, Bluff City, Tri-City Airport, Blountville,
Hiltons and Bloomingdale.

This includes Interstate 81 in Tennessee between mile markers 63 and
72.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3644 8225 3641 8235 3653 8246 3665 8251
      3671 8234
TIME...MOT...LOC 0621Z 252DEG 47KT 3661 8221 

HAIL...1.25IN
WIND...60MPH
 
$$

SR

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, 8:31 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan	44 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, 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.