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Public Information Statement
National Weather Service Portland OR
627 AM PST Wed Nov 11 2020

...NWS DAMAGE SURVEY FOR 11/10/20 TORNADO EVENT... 

National Weather Service meteorologists surveyed the path of a 
weak tornado that occurred in Saint Helens, Oregon during the 
afternoon of Tuesday November 10, 2020. Results of that damage 
survey are below:

Rating:                 EF-0
Estimated Peak Wind:    65 mph
Path Length /statute/:  1.7 miles
Path Width /maximum/:   200 yards
Fatalities:             0
Injuries:               0

Start Date:             November 10, 2020
Start Time:             1220 pm PST
Start Location:         Saint Helens, Oregon
Start Lat/Lon:          45.8665/-122.8675

End Date:               November 10, 2020
End Time:               1226 pm PST
End Location:           Saint Helens, Oregon
End Lat/Lon:            45.8553/-122.8359

Note: Start and end times above are approximate and are estimated
from a combination of radar data, and timestamps on videos from 
several members of the public who captured the event.

Discernible damage include a few trees snapped off, and numerous
small branches blown down. A couple of the branches landed on
power lines that resulted in power outages to at least three
residences. There was minor shingle damage to four homes, and
minor damage to the fiber glass lining of a sun porch. 

The National Weather Service in Portland would like to thank the 
members of the public who shared video and pictures of this 
tornado, and the residents who shared their stories and 
experiences with us. All of this information was helpful in 
documenting this event.

Finally, a graphic with a damage map and other pertinent
information as outlined above should be available by 7 am PST 
Wednesday via the NWS Portland webpage and social media accounts.

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

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

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

$$
Miller/TJ