Public Information Statement
Issued by NWS Sterling, VA

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NOUS41 KLWX 201358

Public Information Statement
National Weather Service Baltimore MD/Washington DC
958 AM EDT Tue Jun 20 2017

...Tornado Confirmed in the Four Corners section of Silver Spring
in Montgomery County Maryland...

Location...Four Corners section of Silver Spring Maryland
Date...June 19, 2017
Estimated Time...3:49 PM EDT
Maximum EF-Scale Rating...EF-0
Estimated Maximum Wind Speed...70 MPH
Maximum Path Width...100 yards
Path Length...0.2 miles
Beginning Lat/Lon...39.0274N / 77.0176W
Ending lat/Lon...39.0284N / 77.0138W
* Fatalities...0
* Injuries...0

* The information in this statement is preliminary and subject to
change pending final review of the event(s) and publication in
NWS Storm Data.

The National Weather Service in Baltimore MD/Washington DC has
confirmed a tornado in the Four Corners section of Silver Spring in
Montgomery County Maryland on June 19, 2017.

The National Weather Service conducted a ground survey of the
damaged community. The survey was greatly assisted by Montgomery
County`s Office of Emergency Management.

An eyewitness reported damaging winds blowing to the east,
followed immediately by damaging winds blowing west. This aligns
with a small, weak rotation noted on FAA`s Terminal Doppler
Weather Radar located at Joint Base Andrews. The damage area was
very compact, with most of the damage confined to a wooded
community along a two block stretch of Dennis Avenue, between
Royalton Road and Eastwood Avenue. Damage was entirely to trees
and objects/homes that trees fell on. Most of the damage was to
and the result of moderate sized branches of tulip poplars about 8
to 12 inches in diameter. Two trees were uprooted as well. Homes,
vehicles, and power lines were damaged from falling trees and
branches, with some homes rendered uninhabitable. No structural
damage was noted that was not the result of falling trees. While
much of the tree damage was from an easterly wind, there was
damage noted in multiple directions. Most of the tree damage was
to the higher branches. No injuries or fatalities were reported as
of the evening of the survey. The entire event likely transpired
in less than a minute.

This information can also be found on our website at

For reference...the Enhanced Fujita Scale classifies tornadoes
into the following categories:

EF0...wind speeds 65 to 85 mph.
EF1...wind speeds 86 to 110 mph.
EF2...wind speeds 111 to 135 mph.
EF3...wind speeds 136 to 165 mph.
EF4...wind speeds 166 to 200 mph.
EF5...wind speeds greater than 200 mph.

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