Alert archive / Virginia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 367, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 11, 2021, 3:37 PM EDT for Albemarle County, City of Charlottesville, Virginia. It was in force for 53 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
- Aug 11, 2021, 3:37 PM EDT (19:37 UTC)
- Expired
- Aug 11, 2021, 4:30 PM EDT
- In force
- 53 min
- Issued by
- NWS Baltimore/Washington
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
The radar
The Sterling radar (KLWX), 131 km from the middle of the area, began a volume at 19:40 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 11, 3:45 PM EDT | TSTM WND DMG | 6 Ne Ivy, VA | SEVERAL REPORTS OF TREES DOWN JUST NORTHEAST OF IVY. |
| Aug 11, 4:10 PM EDT | TSTM WND DMG | 3 S Stony Point, VA | MULTIPLE REPORTS OF TREES AND WIRES BLOWN DOWN ACROSS NORTHEASTERN ALBEMARLE COUNTY. |
| Aug 11, 4:22 PM EDT | TSTM WND DMG | 1 Sw Shadwell, VA | TREE BLEW DOWN ON A HOUSE CAUSING STRUCTURAL DAMAGE IN THE 2000 BLOCK OF HILLVIEW COURT. |
| Aug 11, 4:25 PM EDT | TSTM WND DMG | 3 Se Keswick, VA | A TREE BLEW DOWN ONTO I-64 AT MILE MARKER 133. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 11, 2:02 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.6 hours before the alert went out and 134 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
- 553 J/kg
- Mixed-layer CIN
- -190 J/kg
- Mixed-layer LCL
- 1301 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
484
WUUS51 KLWX 111937
SVRLWX
VAC003-540-112030-
/O.NEW.KLWX.SV.W.0367.210811T1937Z-210811T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
337 PM EDT Wed Aug 11 2021
The National Weather Service in Sterling Virginia has issued a
* Severe Thunderstorm Warning for...
The City of Charlottesville in central Virginia...
Central Albemarle County in central Virginia...
* Until 430 PM EDT.
* At 337 PM EDT, severe thunderstorms were located along a line
extending from near Free Union to near Charlottesville, moving east
at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches
to fall. This could injure those outdoors, as well as
damage homes and vehicles. Roadways may become blocked by
downed trees. Localized power outages are possible.
Unsecured light objects may become projectiles.
* Locations impacted include...
Charlottesville, Free Union, Campbell, Westmoreland, Hollymead,
Ivy, Cobham, Cismont, Newcomb Hall, Boyd Tavern, Monticello,
Woodridge, Keswick, Stony Point, Flordon, Carrsbrook, Earlysville,
Shadwell, Barracks and Overton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3802 7871 3822 7849 3817 7833 3813 7821
3806 7826 3787 7842
TIME...MOT...LOC 1937Z 287DEG 11KT 3816 7845 3806 7857
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF2 follow-up statements
875
WWUS51 KLWX 112011
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
411 PM EDT Wed Aug 11 2021
VAC003-540-112030-
/O.CON.KLWX.SV.W.0367.000000T0000Z-210811T2030Z/
City of Charlottesville VA-Albemarle VA-
411 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR CENTRAL ALBEMARLE COUNTY AND THE CITY OF CHARLOTTESVILLE...
At 410 PM EDT, severe thunderstorms were located along a line
extending from 9 miles northwest of Boswells Tavern to
Charlottesville, moving east at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Charlottesville, Free Union, Campbell, Westmoreland, Hollymead, Ivy,
Cobham, Cismont, Newcomb Hall, Boyd Tavern, Monticello, Woodridge,
Keswick, Stony Point, Flordon, Carrsbrook, Earlysville, Shadwell,
Barracks and Overton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3802 7871 3822 7849 3817 7833 3813 7821
3806 7826 3787 7842
TIME...MOT...LOC 2010Z 287DEG 11KT 3813 7833 3803 7845
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF825
WWUS51 KLWX 112030
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
430 PM EDT Wed Aug 11 2021
VAC003-540-112040-
/O.EXP.KLWX.SV.W.0367.000000T0000Z-210811T2030Z/
City of Charlottesville VA-Albemarle VA-
430 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ALBEMARLE COUNTY AND
THE CITY OF CHARLOTTESVILLE HAS EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central Virginia.
LAT...LON 3802 7871 3822 7849 3817 7833 3813 7821
3806 7826 3787 7842
TIME...MOT...LOC 2030Z 287DEG 11KT 3813 7831 3803 7843
$$
KJPThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 8:37 PM EDT | Special Marine Warning | LWX | 59 min | |
| Aug 11, 1:33 PM EDT | Small Craft Advisory | LWX | 8 hr | |
| Aug 11, 1:59 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, Warren | 46 min |
| Aug 11, 2:06 PM EDT | Severe Thunderstorm Warning | LWX | Page, Rockingham | 39 min |
| Aug 11, 2:11 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham, City of Harrisonburg | 49 min |
| Aug 11, 2:26 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, Page, Shenandoah, Warren | 38 min |
| Aug 11, 2:44 PM EDT | Severe Thunderstorm Warning | LWX | Shenandoah | 46 min |
| Aug 11, 2:49 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Fauquier, Loudoun, Rappahannock, Warren | 41 min |
| Aug 11, 2:52 PM EDT | Severe Thunderstorm Warning | LWX | Greene, Madison | 38 min |
| Aug 11, 2:53 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Rappahannock | 39 min |
| Aug 11, 2:59 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 46 min |
| Aug 11, 3:18 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Loudoun, Rappahannock | 42 min |
| Aug 11, 3:19 PM EDT | Severe Thunderstorm Warning | LWX | Shenandoah | 12 min |
| Aug 11, 3:25 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Madison, Rappahannock | 50 min |
| Aug 11, 3:42 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 48 min |
| Aug 11, 3:46 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Shenandoah, City of Winchester | 25 min |
| Aug 11, 3:50 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison, Orange | 29 min |
| Aug 11, 4:01 PM EDT | Special Marine Warning | LWX | 119 min | |
| Aug 11, 4:06 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier | 39 min |
| Aug 11, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church | 40 min |
| Aug 11, 4:28 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Aug 11, 4:38 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Aug 11, 4:38 PM EDT | Severe Thunderstorm Warning | LWX | Prince William, Stafford | 41 min |
| Aug 11, 5:06 PM EDT | Special Marine Warning | LWX | 114 min | |
| Aug 11, 5:24 PM EDT | Severe Thunderstorm Warning | LWX | Spotsylvania | 36 min |
| Aug 11, 6:09 PM EDT | Special Marine Warning | LWX | 2 hr | |
| Aug 11, 6:26 PM EDT | Special Marine Warning | LWX | 34 min | |
| Aug 11, 6:45 PM EDT | Special Marine Warning | LWX | 34 min | |
| Aug 11, 7:40 PM EDT | Special Marine Warning | LWX | 47 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.