Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Morristown, TN

March 27, 2021Lee County, Scott County, Virginia; Claiborne County, Hancock County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Mar 27, 2021, 11:30 AM EDT for Lee County, Scott County, Virginia; Claiborne County, Hancock County, 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 27, 2021, 11:30 AM EDT (15:30 UTC)
Expired: Mar 27, 2021, 11:52 AM EDT
In force: 22 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Claiborne County, TN, Hancock County, TN, Lee County, VA, Scott County, VA

The radar

The Knoxville radar (KMRX), 53 km from the middle of the area, began a volume at 15:32 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, 11:30 AM EDT	HAIL 1	3 E Tazewell, TN

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, 3.5 hours before the alert went out and 297 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.

797 
WUUS54 KMRX 271530
SVRMRX
TNC025-067-VAC105-169-271615-
/O.NEW.KMRX.SV.W.0022.210327T1530Z-210327T1615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
1130 AM EDT Sat Mar 27 2021

The National Weather Service in Morristown has issued a

* Severe Thunderstorm Warning for...
  Northeastern Claiborne County in east Tennessee...
  Hancock County in east Tennessee...
  Lee County in southwestern Virginia...
  Southwestern Scott County in southwestern Virginia...

* Until 1215 PM EDT.

* At 1130 AM EDT, a severe thunderstorm was located 8 miles northeast
  of Tazewell, or 12 miles west of Sneedville, moving northeast at 65
  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...
  Sneedville, Jonesville, Tazewell, Pennington Gap, St. Charles,
  Howard Quarter, Ewing, Evanston, Dryden and Rose Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3660 8276 3659 8284 3655 8295 3656 8301
      3651 8312 3649 8315 3642 8340 3642 8342
      3641 8342 3642 8343 3639 8349 3655 8359
      3671 8332 3674 8314 3683 8310 3685 8306
      3685 8301 3687 8294
TIME...MOT...LOC 1530Z 242DEG 58KT 3652 8343 

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

Diegan

1 follow-up statement

715 
WWUS54 KMRX 271552
SVSMRX

Severe Weather Statement
National Weather Service Morristown TN
1152 AM EDT Sat Mar 27 2021

TNC025-067-VAC105-169-271601-
/O.CAN.KMRX.SV.W.0022.000000T0000Z-210327T1615Z/
Claiborne TN-Hancock TN-Lee VA-Scott VA-
1152 AM EDT Sat Mar 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLAIBORNE...
HANCOCK...LEE AND SOUTHWESTERN SCOTT 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
gusty winds are still possible with this thunderstorm.

LAT...LON 3660 8276 3659 8284 3655 8295 3656 8301
      3651 8312 3649 8315 3642 8340 3642 8342
      3641 8342 3642 8343 3639 8349 3655 8359
      3671 8332 3674 8314 3683 8310 3685 8306
      3685 8301 3687 8294
TIME...MOT...LOC 1551Z 242DEG 58KT 3668 8305 

$$

Diegan

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, 11:43 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, 1:01 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Scott, Washington, City of Bristol	44 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 Virginia, 2021 Severe Thunderstorm Warnings in Tennessee, 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.