Public Information Statement
Issued by NWS Sterling, VA

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NOUS41 KLWX 080331

Public Information Statement
National Weather Service Baltimore MD/Washington DC
1031 PM EST Fri Feb 7 2020


Location...Monrovia in Frederick County MD
Date...Fri Feb 7, 2020
Estimated Time...7:44 AM to 7:50 AM EST
Maximum EF-Scale Rating...EF1
Estimated Maximum Wind Speed...105 mph
Maximum Path Width...150 yards
Path Length...6.0 miles
Beginning Lat/Lon...39.3427/-77.2758
Ending Lat/Lon...39.4155/-77.1917
* Fatalities...0
* Injuries...0

Staff from NOAA`s National Weather Service Baltimore/Washington
Weather Forecast Office located in Sterling, VA performed a survey
of storm damage that occurred in eastern Frederick County MD near
Monrovia and New Market. This survey, coupled with radar analysis
from the KLWX WSR-88D radar and an FAA Terminal Doppler Weather
Radar (TIAD), concluded that a tornado rated EF1 on the Enhanced
Fujita Scale impacted portions of eastern Frederick County MD.

Initial damage was to several structures at a farm in the 11000
block of Fingerboard Road, where a machine shed and barn were
flattened. A silo was also heavily damaged. Tree damage was noted
near the intersection of State routes 75 and 80. A large swath of
tree and utility line damage was noted along Lynn Burke Rd near
Old Bartholows Rd just south of I-70.

The tornado crossed I-70 and moved along Jesse Smith Rd where
more tree damage (uprooted and topped) was observed. Further
north along the 12900 block of Jesse Smith Rd, more significant
tree damage occurred with numerous softwood trees topped at two
residences along a concentrated damage path.

The tornado continued northeast over open country before crossing
Old Annapolis Rd near Ravenwood Rd, producing extensive tree
damage at several residences. Finally, the tornado caused tree
damage as it crossed Bottom Rd along Woodville Branch and
continued into a wooded area that was not surveyed due to
impending darkness.

EF Scale: The Enhanced Fujita Scale classifies tornadoes into the
following categories:

EF0.........65 to 85 mph
EF1.........86 to 110 mph
EF2.........111 to 135 mph
EF3.........136 to 165 mph
EF4.........166 to 200 mph
EF5.........>200 mph

* The information in this statement is preliminary and subject to
change pending final review of the event and publication in NWS
Storm Data. The National Weather Service thanks Frederick County MD
Emergency Management for their assistance in conducting these surveys.


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