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July 17, 2010

Longest bout of rain was in 1873


Charles Davis writes from Baltimore with a Biblical query: “Has Maryland ever experienced a period of 40 days and 40 nights of rain?” Not by a long shot, at least not in Baltimore since official records began in 1871. NWS science officer Steve Zubrick said: “The longest consecutive stretch of days having measureable (0.01 inch or more) precipitation is 14 days.” That occurred from Aug. 10 to 23, 1873, with 8.81 inches in the gauge by the time it let up.  Nearly 4 inches fell Aug. 13.

(AP PHOTO/ China, July 2010)

Posted by Frank Roylance at 6:00 AM | | Comments (2)
Categories: From the Sun's print edition



Better question is if it has ever happened anywhere on the planet other than Noah's time.

Or anywhere close ??

Fran In Baltimore

FR: A better question, perhaps, but reliable global data going back 6,000 years is hard to come by.

What about October 2005? I thought it rained nearly everyday that month. We had 14" of rain that month in the Baltimore area.

FR: That was a very wet month, with 9.23 inches recorded, officially, at BWI-Marshall. That's still the record for October. There were two days in a row that delivered 6.65 inches. In all, the airport saw 10 days of measurable rain that month (and six more days with a trace), but no more than three days in a row with 0.01 inch or more.

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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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