Alert archive / Virginia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 129, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 14, 2021, 8:59 PM EDT for Scott County, Virginia. It was in force for 46 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
- Aug 14, 2021, 8:59 PM EDT (00:59 UTC)
- Expired
- Aug 14, 2021, 9:45 PM EDT
- In force
- 46 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Scott County, VA
The radar
The Knoxville radar (KMRX), 92 km from the middle of the area, began a volume at 00:58 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 |
|---|---|---|---|
| Aug 14, 9:15 PM EDT | TSTM WND DMG | 4 Sw Fort Blackmore, VA | 4 TO 5 TREES DOWN IN BETWEEN CLINCHPORT AND FORT BLACKMORE AREA. |
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, 1.0 hours before the alert went out and 262 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
- 546 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1189 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
109
WUUS54 KMRX 150059
SVRMRX
VAC169-150145-
/O.NEW.KMRX.SV.W.0129.210815T0059Z-210815T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
859 PM EDT Sat Aug 14 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Central Scott County in southwestern Virginia...
* Until 945 PM EDT.
* At 859 PM EDT, a severe thunderstorm was located near Gate City,
moving northwest at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Gate City, Duffield, Clinchport and Fort Blackmore.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3667 8247 3661 8271 3672 8284 3674 8282
3675 8283 3677 8281 3678 8279 3683 8275
3683 8273 3682 8270 3685 8266 3688 8263
3688 8256
TIME...MOT...LOC 0059Z 148DEG 7KT 3668 8263
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Garuckas2 follow-up statements
898
WWUS54 KMRX 150116
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
916 PM EDT Sat Aug 14 2021
VAC169-150145-
/O.CON.KMRX.SV.W.0129.000000T0000Z-210815T0145Z/
Scott VA-
916 PM EDT Sat Aug 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR CENTRAL SCOTT COUNTY...
At 915 PM EDT, a severe thunderstorm was located near Gate City,
moving northwest at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Duffield, Clinchport and Fort Blackmore.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3672 8249 3663 8273 3672 8284 3674 8282
3675 8283 3677 8281 3678 8279 3683 8275
3683 8273 3682 8270 3685 8266 3688 8263
3688 8256
TIME...MOT...LOC 0115Z 146DEG 7KT 3670 8265
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Garuckas117
WWUS54 KMRX 150135
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
935 PM EDT Sat Aug 14 2021
VAC169-150145-
/O.EXP.KMRX.SV.W.0129.000000T0000Z-210815T0145Z/
Scott VA-
935 PM EDT Sat Aug 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SCOTT COUNTY WILL
EXPIRE AT 945 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 3672 8249 3663 8273 3672 8284 3674 8282
3675 8283 3677 8281 3678 8279 3683 8275
3683 8273 3682 8270 3685 8266 3688 8263
3688 8256
TIME...MOT...LOC 0135Z 148DEG 7KT 3673 8268
$$
GaruckasThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 8:21 PM EDT | Special Weather Statement | MRX | Scott | 39 min |
| Aug 14, 9:31 PM EDT | Severe Thunderstorm Warning | MRX | Lee, Wise | 44 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 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.