Public Information Statement
Issued by NWS Mt. Holly, NJ

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Public Information Statement
National Weather Service Mount Holly NJ
642 PM EDT Tue Jun 20 2017

...TORNADO CONFIRMED NEAR GREENWOOD IN SUSSEX COUNTY DELAWARE...

Location...Greenwood in Sussex County, Delaware
Date...June 19, 2017
Estimated Time...615 PM EDT
Maximum EF-Scale Rating...EF-0
Estimated Maximum Wind Speed...85 mph
Maximum Path Width...200 yards
Path Length...0.6 miles
Beginning Lat/Lon...38.79N / -75.58W
Ending lat/Lon...38.80N / -75.57W
* 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.

...Summary...
The National Weather Service in Mount Holly NJ has confirmed a
tornado near Greenwood in Sussex County Delaware on June 19,
2017.

A path of straight-line winds started in a wooded area near the
intersection of Adams Road and 583A, which is behind the Delaware
Electric Coop facility. Several trees were snapped and uprooted,
then the south end of a warehouse at the Delaware Electric Coop
was pushed in with two large garage doors blown out. A section of
the roof was also significantly damaged. Security camera footage
showed very strong winds moving through the Delaware Electric
Coop, however there was no clear evidence of a tornado. This
narrow but intense downburst continued east-northeast and caused
areas of tree damage. The straight-line winds were estimated to be
between 75-80 mph.

Radar data, which was very close by, indicated a rotation
signature which intensified for a time as an outflow boundary
settled southeastward and interacted with this storm. The radar
was scanning within 600 feet above ground level, with even
evidence of a tornado debris signature in the dual-pol data. A
tornado touched down between Nanticoke River and the intersection
of Sugar Hill Road and St. Johnstown Road, and tracked
northeastward for about 0.6 miles before lifting. There was
significant damage to a farm, with a couple of small barns
destroyed with a lot of debris lofted and blown far across an
adjacent field. Several trees were snapped or blown over along
with damage to a few nearby power poles and wires. A large
unoccupied chicken coup, about 200 feet in length, was lifted and
moved several feet off its foundation with some metal roof panels
on the north end were twisted in a southerly direction. Across the
street from the farm on Sugar Hill Road, a couple sections of
large central pivot irrigation systems were lifted and tipped onto
their side. Each section of the irrigation weighs about 8800 pounds.

As the storm moved east-northeast to the Lincoln and Ellendale
areas, some sporadic areas of straight-line wind damage occurred
mostly to large trees. Some of the trees were snapped toward the
top, while areas between the farm and Ellendale had trees uprooted
or snapped.

The National Weather Service would like to thank the Delaware
Emergency Management Agency, Sussex County Emergency Management,
Delaware Electric Coop and residents of Greenwood for their
assistance in this survey.

This information can also be found on our website at
weather.gov/phi.

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

$$

Gorse/Franck


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