Damage Survey PNS from KLWX

[akr...@iastate.edu]

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Text Permalink: IEM Website (202606152024-KLWX-NOUS41-PNSLWX)

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796 
NOUS41 KLWX 152024
PNSLWX
DCZ001-MDZ003>006-008-011-013-014-016>018-501>510-VAZ025>031-
036>040-050-051-053>057-501>508-526-527-WVZ050>053-055-501>506-
160830-

Public Information Statement
National Weather Service Baltimore MD/Washington DC
424 PM EDT Mon Jun 15 2026


...NWS Damage Survey for 06/14/2026 Thunderstorm Wind Event...

Overview:
The National Weather Service survey team determined wind damage 
associated with a Severe Thunderstorm located near Libertytown, MD 
was from straight-line winds. 

Survey Summary:

On June 15, 2026, a survey team from the National Weather Service
Baltimore/Washington Weather Forecast Office conducted a formal 
storm assessment in Frederick County, Maryland. The objective of 
the field survey was to analyze the thunderstorm wind damage that 
occurred during the evening of Sunday, June 14, 2026. The event 
began at approximately 7:30 PM EDT, when a cluster of showers 
initiated in central Jefferson County, West Virginia. This 
convective system tracked continuously northeastward into 
Frederick County, Maryland, while exhibiting steady 
intensification. 

As the storm progressed east of Libertytown, Maryland, it
generated a localized zone of significant structural and tree
damage. The most severe impacts were concentrated within the 9000
block of Bessie Clemson Road. Based on the degree of damage
observed, peak wind velocities in this specific corridor were
estimated up to 80 MPH. Physical evidence at the scene included
numerous snapped and uprooted soft and hardwood trees, alongside
the total wall collapse of a barn structure. 

Analysis of the debris field and fallen vegetation revealed a
strictly unidirectional damage pattern. This uniform orientation
aligned precisely with the forward motion of the storm, confirming
the absence of rotational characteristics. Therefore, the
National Weather Service Baltimore/Washington Weather Forecast
Office has classified the destruction as a straight-line wind
event driven by downburst winds. 

Outside of the immediate Bessie Clemson Road impact zone, the
thunderstorm produced sporadic wind damage across the broader
county. These widespread convective wind gusts were estimated to
range from 60 to 80 mph with all associated damage matching the
directional trajectory of the storm. 

The National Weather Service Baltimore/Washington office compiled
these finding with the vital support of the Frederick County
Division of Emergency Management and the Division of Fire and
Rescue Services, whose local assistance proved essential to 
completing the damage assessments. 

&&

NOTE:
The information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
Storm Data.

$$

AVS/JMG

[akr...@iastate.edu]

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Text Permalink: IEM Website (202606231611-KLWX-NOUS41-PNSLWX)

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NOUS41 KLWX 231611
PNSLWX
DCZ001-MDZ003>006-008-011-013-014-016>018-501>510-VAZ025>031-
036>040-050-051-053>057-501>508-526-527-WVZ050>053-055-501>506-
240415-

Public Information Statement
National Weather Service Baltimore MD/Washington DC
1211 PM EDT Tue Jun 23 2026

...NWS Damage Survey for 06/22/26 Thunderstorm Wind Event in Burke, VA...

.Thunderstorm Wind...

Peak Wind |E|: 90 MPH
Path Length /statute/: 1.0 miles 
Path Width /maximum/: 500 yards 
Fatalities: 0 
Injuries: 0

Start Date:             June 22 2026
Start Time:             5:09 PM EDT
Start Location:         1 NW Burke VA / Fairfax County / VA
Start Lat/Lon:          38.800 / -77.296

End Date:               June 22 2026
End Time:               5:10 PM EDT
End Location:           1 NNW Burke VA / Fairfax County / VA
End Lat/Lon:            38.804 / -77.278

Survey Summary:
A severe thunderstorm produced a strong downburst one mile
northwest of Burke VA with peak winds estimated 90 MPH. While 
other minor scattered tree damage was noted outside of the 
microburst in the general area, the microburst affected the 
communities around Lake Royal. Significant concentrated damage 
began along Zion Road between the cross streets of Guinea Drive 
and Hillard Lake Road. Tree damage continued along Bridgewood 
Drive and Falmead Road before reaching Lake Royal. Through this 
area, many, though not all, of the trees were snapped midway, 
uprooted, or had large branches snapped off. Trees fell onto cars,
powerlines, roads, and homes with substantial damage. Damage was 
unidirectionally pushed to the east northeast in the direction of 
storm movement.

As the microburst crossed Lake Royal, the lack of trees and
roughness allowed the winds to accelerate and then blast the
townhomes on the east shore. Several townhomes on that row facing
the lake had significant portions of their roofs lifted off. Winds
were estimated to have peaked at 90 MPH. 

On the south side of the lake along Guinea Drive, trees were
snapped onto the road and powerlines. A business park building was
noted to have some damage due to the roof being slightly lifted
temporarily. 

Significant tree damage continued to the community on the east 
side of Lake Royal with similar tree damage along Lakepoint Drive 
west of Guinea Road. Trees and branches were again snapped onto 
cars and homes, and townhome fences were pushed down on many 
properties. East of Guinea Road, winds lessened and tree damage 
became isolated. One further point of note was Burke Road near 
Peppercorn Drive where a few trees were downed, one onto a bus 
stand and street light.

Throughout the survey, damage was pushed to the northeast in the 
direction of storm movement. NWS Doppler Weather Radar KLWX in 
Sterling, VA, as well as FAA Terminal Doppler Radars from TDCA
and TADW, displayed thunderstorm downburst signatures at the Burke 
location at the time, with no evidence of rotation indicating the
storm being tornadic. Severe straight line thunderstorm downburst
wind gusts can sometimes produce damage equivalent to damage from
EF0 and EF1 tornadoes.

The National Weather Service would like to thanks Fairfax County
Department of Emergency Management and Security for their
assistance.

&&

NOTE:
The information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
Storm Data.

$$