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September 28, 2011

Wettest 30 days in Baltimore

FROM TODAY'S PRINT EDITIONS:

Cockeysville floodingWe already know that September has already been the rainiest September on record for Baltimore, with 12.78 inches. Now the folks at NWS/Sterling have run more numbers. Science Officer Steve Zubrick discovered that the 30-day period from Aug. 13 through Sept. 11 was the wettest 30 days on record for Baltimore, with 18.90 inches at BWI. August through September was also the wettest such period on record here, with 23.16 inches at BWI. More here tomorrow.

(SUN PHOTO: Cockeysville flooding, Brian Krista, Sept. 14, 2011)

Posted by Frank Roylance at 12:01 AM | | Comments (4)
Categories: By the numbers, From the Sun's print edition
        

Comments

Is there any concensus in Sterling or otherwise that the record heat and wet weather in MD is because of climate change, so we can expect more unusually harsh weather, or is this just a fluke?

FR REPLIES: I don't think anyone in Sterling would touch that. And climatologists would say they can't blame any particular weather extreme on climate change. Each has its own more immediate causes - blocking highs, El Nino, positive NAO, etc. Climate change is something you see with broad hindsight, in data reaching back decades, and compared with climate proxy data going back millennia (tree rings, sediments, coral, etc). That said, one of the predictions of climate change theory is that we will see more extreme weather events - drought, flood, snow, heat and, yes, in some places, cold.

Well....23 inches of rain in that time than if it was January to Feb and it was 200+ inches of snow. That would be about 19 feet!

Hi Frank,

Interesting info. I would say these have been the cloudiest, most overcast 30 days in Baltimore history as well....Although I guess that's a little harder to quantify.

As for the clear skies supposedly on the way - I'll believe it when I see it since we've heard that forecast before only to be faced with more clouds and rain!!

Thanks,
Davuid

I just read on this sight the dewpoint was a whopping 74.6 degrees and here it's the end of September!

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About Frank Roylance
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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