Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Morristown, TN

March 27, 20214 counties in Virginia; 5 counties in Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 27, 2021, 1:01 PM EDT for 4 counties in Virginia; 5 counties in Tennessee. It was in force for 44 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, 1:01 PM EDT (17:01 UTC)
Expired: Mar 27, 2021, 1:45 PM EDT
In force: 44 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Knoxville radar (KMRX), 140 km from the middle of the area, began a volume at 17:00 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, 1:10 PM EDT	TSTM WND DMG	5 Se Bristol Tn, TN	MULTIPLE TREES DOWN ALONG BRISTOL CAVERNS HIGHWAY.
Mar 27, 1:10 PM EDT	TSTM WND DMG	Bristol Va, VA	SEVERAL TREES DOWN.
Mar 27, 1:15 PM EDT	TSTM WND GST 54	1 Ssw Hunter, TN	AWOS STATION K0A9 ELIZABETHTON.
Mar 27, 1:21 PM EDT	HAIL 0.7	2 Wsw Abingdon, VA

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 12:00Z, 5.0 hours before the alert went out and 195 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: 2434 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

982 
WUUS54 KMRX 271701
SVRMRX
TNC019-091-163-171-179-VAC167-169-191-520-271745-
/O.NEW.KMRX.SV.W.0025.210327T1701Z-210327T1745Z/

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

The National Weather Service in Morristown has issued a

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

* Until 145 PM EDT.

* At 101 PM EDT, severe thunderstorms were located along a line
  extending from near Trammel to 6 miles east of Erwin, moving east
  at 35 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Johnson City, Bristol Tn, Bristol Va, Elizabethton, Abingdon,
  Lebanon, Mountain City, Cleveland Va, Central and Pine Crest.

This includes the following highways...
 Interstate 26 in Tennessee between mile markers 21 and 33.
 Interstate 81 in Tennessee between mile markers 67 and 75.
 Interstate 81 in Virginia between mile markers 1 and 34.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3653 8171 3647 8170 3640 8174 3634 8171
      3636 8179 3634 8185 3610 8208 3616 8221
      3611 8237 3689 8238 3691 8230 3697 8233
      3700 8229 3705 8204 3712 8201 3714 8190
      3696 8178 3693 8184 3679 8170 3663 8161
TIME...MOT...LOC 1701Z 266DEG 30KT 3705 8231 3615 8230 

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

Garuckas

2 follow-up statements

009 
WWUS54 KMRX 271725
SVSMRX

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

TNC171-179-VAC169-271735-
/O.CAN.KMRX.SV.W.0025.000000T0000Z-210327T1745Z/
Washington TN-Unicoi TN-Scott VA-
125 PM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON...
NORTHEASTERN UNICOI AND SOUTHEASTERN SCOTT COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3653 8171 3647 8170 3640 8174 3634 8171
      3636 8179 3634 8185 3610 8208 3616 8221
      3617 8221 3704 8209 3705 8204 3712 8201
      3714 8190 3696 8178 3693 8184 3679 8170
      3663 8161
TIME...MOT...LOC 1725Z 266DEG 30KT 3706 8207 3616 8206 

$$

TNC019-091-163-VAC167-191-520-271745-
/O.CON.KMRX.SV.W.0025.000000T0000Z-210327T1745Z/
Sullivan TN-Johnson TN-Carter TN-Russell VA-City of Bristol VA-
Washington VA-
125 PM EDT Sat Mar 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EDT
FOR EASTERN SULLIVAN...JOHNSON...CARTER...EASTERN RUSSELL AND
WASHINGTON COUNTIES AND THE EASTERN CITY OF BRISTOL...

At 125 PM EDT, severe thunderstorms were located along a line
extending from near Davenport to near Elk Park, moving east at 35
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, Elizabethton, Abingdon, Lebanon, Mountain
City, Hampton, Glade Spring, Honaker and Damascus.

This includes Interstate 81 in Virginia between mile markers 6 and
34.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3653 8171 3647 8170 3640 8174 3634 8171
      3636 8179 3634 8185 3610 8208 3616 8221
      3617 8221 3704 8209 3705 8204 3712 8201
      3714 8190 3696 8178 3693 8184 3679 8170
      3663 8161
TIME...MOT...LOC 1725Z 266DEG 30KT 3706 8207 3616 8206 

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

Diegan

559 
WWUS54 KMRX 271743
SVSMRX

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

TNC019-091-163-VAC167-191-520-271752-
/O.EXP.KMRX.SV.W.0025.000000T0000Z-210327T1745Z/
Sullivan TN-Johnson TN-Carter TN-Russell VA-City of Bristol VA-
Washington VA-
143 PM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SULLIVAN...JOHNSON...
CARTER...EASTERN RUSSELL AND WASHINGTON COUNTIES AND THE EASTERN CITY
OF BRISTOL WILL EXPIRE AT 145 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3653 8171 3647 8170 3640 8174 3634 8171
      3636 8179 3634 8185 3610 8208 3616 8221
      3617 8221 3704 8209 3705 8204 3712 8201
      3714 8190 3696 8178 3693 8184 3679 8170
      3663 8161
TIME...MOT...LOC 1742Z 266DEG 30KT 3707 8190 3617 8189 

$$

Garuckas

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 11:07 AM EDT	Severe Thunderstorm Warning	MRX	Russell, Scott, Washington, City of Bristol	38 min
Mar 27, 11:30 AM EDT	Severe Thunderstorm Warning	MRX	Lee, Scott	22 min
Mar 27, 11:43 AM EDT	Severe Thunderstorm Warning	MRX	Washington	32 min
Mar 27, 11:45 AM EDT	Areal Flood Advisory	MRX	Scott	3 hr
Mar 27, 12:02 PM EDT	Areal Flood Advisory	MRX	Washington, City of Bristol	3 hr
Mar 27, 12:12 PM EDT	Areal Flood Advisory	MRX	Lee	3 hr
Mar 27, 12:23 PM EDT	Special Weather Statement	MRX	Scott, City of Norton	52 min
Mar 27, 12:54 PM EDT	Special Weather Statement	MRX	Russell, Washington, City of Bristol	51 min
Mar 27, 2:03 PM EDT	Areal Flood Advisory	MRX	Washington	117 min
Mar 27, 5:38 PM EDT	Areal Flood Warning	MRX	Lee, Scott	3 hr
Mar 27, 7:34 PM EDT	Special Weather Statement	MRX	Lee	41 min
Mar 27, 5:03 AM EDT	Special Weather Statement	MRX	Marion, Sequatchie	42 min
Mar 27, 5:23 AM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Hamilton, Marion, Sequatchie	39 min
Mar 27, 5:47 AM EDT	Special Weather Statement	MRX	Hamilton	43 min
Mar 27, 6:08 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton	52 min
Mar 27, 6:41 AM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	49 min
Mar 27, 7:46 AM EDT	Special Weather Statement	MRX	Roane	44 min
Mar 27, 7:58 AM EDT	Severe Thunderstorm Warning	MRX	Morgan	47 min
Mar 27, 8:27 AM EDT	Special Weather Statement	MRX	Scott	48 min
Mar 27, 8:37 AM EDT	Special Weather Statement	MRX	Knox	38 min
Mar 27, 8:42 AM EDT	Severe Thunderstorm Warning	MRX	Scott	26 min
Mar 27, 8:58 AM EDT	Special Weather Statement	MRX	Knox, Loudon	47 min
Mar 27, 9:18 AM EDT	Severe Thunderstorm Warning	MRX	Grainger, Knox, Union	42 min
Mar 27, 9:39 AM EDT	Severe Thunderstorm Warning	MRX	Knox, Sevier	30 min
Mar 27, 9:43 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hancock, Hawkins	47 min
Mar 27, 10:00 AM EDT	Severe Thunderstorm Warning	MRX	Cocke, Hamblen, Jefferson	45 min
Mar 27, 10:06 AM EDT	Severe Thunderstorm Warning	MRX	Campbell, Scott	54 min
Mar 27, 10:14 AM EDT	Special Weather Statement	MRX	Anderson, Campbell, Morgan, Scott	46 min
Mar 27, 10:30 AM EDT	Special Weather Statement	MRX	Hawkins	45 min
Mar 27, 10:33 AM EDT	Severe Thunderstorm Warning	MRX	Greene	42 min
Mar 27, 10:33 AM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne	42 min
Mar 27, 10:36 AM EDT	Flash Flood Warning	MRX	Morgan, Scott	4 hr
Mar 27, 10:41 AM EDT	Severe Thunderstorm Warning	MRX	Hawkins	49 min
Mar 27, 10:51 AM EDT	Special Weather Statement	MRX	Anderson, Morgan	39 min
Mar 27, 11:00 AM EDT	Special Weather Statement	MRX	Claiborne	45 min
Mar 27, 11:11 AM EDT	Severe Thunderstorm Warning	MRX	Unicoi, Washington	35 min
Mar 27, 11:20 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen, Union	40 min
Mar 27, 11:32 AM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan, Unicoi, Washington	43 min
Mar 27, 11:46 AM EDT	Special Weather Statement	MRX	Hamblen, Jefferson	44 min
Mar 27, 11:48 AM EDT	Areal Flood Advisory	MRX	Campbell, Claiborne	3 hr
Mar 27, 11:50 AM EDT	Areal Flood Advisory	MRX	Carter, Greene, Washington	3 hr
Mar 27, 11:56 AM EDT	Special Weather Statement	MRX	Monroe	49 min
Mar 27, 12:07 PM EDT	Areal Flood Advisory	MRX	Anderson, Knox	3 hr
Mar 27, 12:17 PM EDT	Special Weather Statement	MRX	Johnson	43 min
Mar 27, 3:13 PM EDT	Wind Advisory	MRX	Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more	23 hr
Mar 27, 3:34 PM EDT	Special Weather Statement	MRX	Campbell, Morgan	41 min
Mar 27, 5:05 PM EDT	Areal Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 27, 5:49 PM EDT	Special Weather Statement	MRX	Anderson, Morgan	41 min
Mar 27, 6:13 PM EDT	Areal Flood Warning	MRX	Blount, Sevier	3 hr
Mar 27, 6:59 PM EDT	Special Weather Statement	MRX	Morgan, Scott	46 min
Mar 27, 7:02 PM EDT	Special Weather Statement	MRX	Marion, Sequatchie	43 min
Mar 27, 7:15 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Scott	45 min
Mar 27, 7:36 PM EDT	Special Weather Statement	MRX	Meigs	39 min
Mar 27, 7:40 PM EDT	Special Weather Statement	MRX	Campbell, Scott	50 min
Mar 27, 7:43 PM EDT	Severe Thunderstorm Warning	MRX	Marion	47 min
Mar 27, 7:52 PM EDT	Special Weather Statement	MRX	Campbell	53 min

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.