Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Baltimore/Washington

May 26, 2021Clarke County, Frederick County, Warren County, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at May 26, 2021, 3:24 PM EDT for Clarke County, Frederick County, Warren County, Virginia. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 26, 2021, 3:24 PM EDT (19:24 UTC)
Expired
May 26, 2021, 4:03 PM EDT
In force
39 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clarke County, VA, Frederick County, VA, Warren County, VA

The radar

The Sterling radar (KLWX), 60 km from the middle of the area, began a volume at 19:25 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 26, 2:48 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.4 hours before the alert went out and 68 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2021-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 478 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2021-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
478 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
922 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

155 
WUUS51 KLWX 261924
SVRLWX
VAC043-069-187-262015-
/O.NEW.KLWX.SV.W.0049.210526T1924Z-210526T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
324 PM EDT Wed May 26 2021

The National Weather Service in Sterling Virginia has issued a

* Severe Thunderstorm Warning for...
  Southeastern Frederick County in northwestern Virginia...
  Northern Warren County in northwestern Virginia...
  Clarke County in northwestern Virginia...

* Until 415 PM EDT.

* At 324 PM EDT, a severe thunderstorm was located near Stephens
  City, or near Strasburg, moving east at 20 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...
  Millwood Pike, Berryville, Stephens City, Middletown, Boyce,
  Howellsville, White Post, Gaylord, Reliance, Armel, Briggs,
  Millwood, Nineveh, Bethel, Cedarville, Stringtown, Buckton and
  Greenwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3919 7792 3904 7792 3897 7802 3895 7831
      3897 7833 3898 7832 3900 7833 3901 7831
      3903 7831 3906 7834 3908 7833 3914 7818
      3913 7818 3916 7815 3921 7795
TIME...MOT...LOC 1924Z 254DEG 18KT 3903 7824 

HAIL...<.75IN
WIND...60MPH
 
$$

DHOF
4 follow-up statements
292 
WWUS51 KLWX 261936
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
336 PM EDT Wed May 26 2021

VAC043-069-187-262015-
/O.CON.KLWX.SV.W.0049.000000T0000Z-210526T2015Z/
Frederick VA-Warren VA-Clarke VA-
336 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHEASTERN FREDERICK...NORTHEASTERN WARREN AND CLARKE COUNTIES
IN NORTHWESTERN VIRGINIA...

At 336 PM EDT, a severe thunderstorm was located near Stephens City,
or 7 miles south of Millwood Pike, moving east at 20 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...
Millwood Pike, Berryville, Stephens City, Boyce, White Post, Gaylord,
Armel, Briggs, Millwood, Nineveh, Bethel, Stringtown, Reliance and
Greenwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3919 7792 3904 7792 3897 7802 3901 7827
      3908 7826 3913 7818 3916 7815 3921 7795
TIME...MOT...LOC 1936Z 254DEG 18KT 3905 7817 

HAIL...<.75IN
WIND...60MPH
 
$$

DHOF
945 
WWUS51 KLWX 261947
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
347 PM EDT Wed May 26 2021

VAC043-069-187-262015-
/O.CON.KLWX.SV.W.0049.000000T0000Z-210526T2015Z/
Frederick VA-Warren VA-Clarke VA-
347 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHEASTERN FREDERICK...NORTHEASTERN WARREN AND CLARKE COUNTIES
IN NORTHWESTERN VIRGINIA...

At 347 PM EDT, a severe thunderstorm was located 7 miles east of
Stephens City, or 7 miles southeast of Millwood Pike, moving east at
20 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...
Berryville, Boyce, Millwood, White Post, Armel, Bethel, Briggs and
Gaylord.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3919 7792 3904 7792 3897 7802 3903 7819
      3909 7820 3911 7818 3913 7815 3916 7801
TIME...MOT...LOC 1947Z 270DEG 18KT 3906 7810 

HAIL...<.75IN
WIND...60MPH
 
$$

DHOF
941 
WWUS51 KLWX 262000
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
400 PM EDT Wed May 26 2021

VAC069-187-262010-
/O.CAN.KLWX.SV.W.0049.000000T0000Z-210526T2015Z/
Frederick VA-Warren VA-
400 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FREDERICK AND
NORTHEASTERN WARREN COUNTIES IN NORTHWESTERN VIRGINIA IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northern and northwestern Virginia.

LAT...LON 3910 7792 3904 7792 3900 7799 3911 7800
TIME...MOT...LOC 2000Z 254DEG 18KT 3908 7802 

$$

VAC043-262015-
/O.CON.KLWX.SV.W.0049.000000T0000Z-210526T2015Z/
Clarke VA-
400 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTH CENTRAL CLARKE COUNTY...

At 400 PM EDT, a severe thunderstorm was located near Berryville, or
8 miles southeast of Millwood Pike, moving east at 20 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.

This severe thunderstorm will remain over mainly rural areas of south
central Clarke County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3910 7792 3904 7792 3900 7799 3911 7800
TIME...MOT...LOC 2000Z 254DEG 18KT 3908 7802 

HAIL...<.75IN
WIND...60MPH
 
$$

DHOF
046 
WWUS51 KLWX 262003
SVSLWX

Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
403 PM EDT Wed May 26 2021

VAC043-262013-
/O.CAN.KLWX.SV.W.0049.000000T0000Z-210526T2015Z/
Clarke VA-
403 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CLARKE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northern and northwestern Virginia.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sterling Virginia.

LAT...LON 3910 7792 3904 7792 3900 7799 3911 7800
TIME...MOT...LOC 2000Z 254DEG 18KT 3908 7800 

$$

DHOF

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 26, 2:48 PM EDTSevere Thunderstorm WarningLWXFrederick, Shenandoah, Warren, City of Winchester42 min
May 26, 2:51 PM EDTSevere Thunderstorm WarningLWXClarke, Loudoun39 min
May 26, 3:21 PM EDTSevere Thunderstorm WarningLWXLoudoun39 min
May 26, 3:40 PM EDTSevere Thunderstorm WarningLWXClarke, Loudoun28 min
May 26, 3:59 PM EDTSevere Thunderstorm WarningLWXLoudoun9 min
May 26, 4:05 PM EDTSevere Thunderstorm WarningLWXFairfax, Fauquier, Loudoun, Prince William, City of Fairfax, City of Manassas and 1 more40 min
May 26, 4:23 PM EDTSpecial Marine WarningLWX114 min
May 26, 4:35 PM EDTSevere Thunderstorm WarningLWXArlington, Fairfax, Prince William, City of Alexandria, City of Fairfax, City of Falls Church and 2 more40 min
May 26, 4:55 PM EDTSpecial Marine WarningLWX59 min
May 26, 5:18 PM EDTSpecial Marine WarningLWX97 min
May 26, 5:22 PM EDTSevere Thunderstorm WarningLWXFairfax, Prince William, City of Alexandria24 min
May 26, 5:28 PM EDTSpecial Marine WarningLWX86 min
May 26, 5:45 PM EDTSpecial Marine WarningLWX79 min
May 26, 6:15 PM EDTSevere Thunderstorm WarningLWXClarke, Frederick, City of Winchester45 min
May 26, 6:22 PM EDTSpecial Marine WarningLWX42 min
May 26, 6:51 PM EDTSevere Thunderstorm WarningLWXLoudoun39 min
May 26, 7:06 PM EDTSevere Thunderstorm WarningLWXGreene, Page, Rockingham, City of Harrisonburg20 min
May 26, 7:27 PM EDTSevere Thunderstorm WarningLWXFairfax, Loudoun48 min
May 26, 7:50 PM EDTSevere Thunderstorm WarningLWXFairfax, Fauquier, Loudoun, Prince William, City of Fairfax, City of Falls Church and 2 more40 min
May 26, 7:59 PM EDTSevere Thunderstorm WarningLWXArlington, Fairfax46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.