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November 19, 2010

Maryland averages 4.3 tornadoes a year


Wednesday’s EF-1 tornado is the fifth in Baltimore City since 1973. The weather service’s tornado database lists a 1973 event rated an F-0 on the old Fujita Scale, the weakest rating. But eyewitnesses reported six different funnel clouds over the city that day. Two F-1 funnels touched down in 1994 and an F-0 in 1996. Maryland counted 209 tornadoes between 1950 and 1998, an average of 4.3 per year. The most recent (until this week) was an 80-mph, EF-0 twister in Anne Arundel County, on Sept. 30.

Posted by Frank Roylance at 6:00 AM | | Comments (1)
Categories: From the Sun's print edition



As for tornadic events on the high end, there's the La Plata F4, the Frostburg F4, the College Park F3 from recent memory, and a historic tornado that also hit La Plata.

Are there any other significant tornadoes in Maryland?

FR: The Oct. 18, 1990 Chartley tornado in Reisterstown comes to mind. It was probably an EF-1, but struck a densely populated area. Damage came to $15 million, with 170 homes damaged or destroyed. Five hundred people were affected, including seven who required hospital treatment. You can peruse past storms, including tornados, by county here in Sterling's not-very-user-friendly tornado database here:
There's a slightly more usable collection of storm data here:

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About Frank Roylance
This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff

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