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Tuesday, December 22, 2009

19th -20th strom summary




This long tracked storm ended up originating in the gulf, with input from a shortwave and upper low from the plains. The initial gulf moisture pounded NC, VA, MD and DE, but fell mainly aloft in areas north of Philly.




In Danbury, radar echoes showed up at 8am, with the first flakes falling at 3pm, for about 15min before they shut off. They started again at 8pm, with the ground being covered by 9 and one inch by 10. The snow that fell here was mostly from the combination of the southern storm, shortwave and upper low bombing out just east of new jersey. You could watch the eye of the storm go from the Delmarva off to just south of the benchmark. Danbury ended up with 7 inches officially, but 5-6 mostly in my yard. The wind blew away a lot of the snow as it was very fine. Winds gusted at the house up to 22 mph. I had thought my call of 8 inches was conservative as the precip output on the gfs and nam were between 1.25 and 2 inches for the area. Dry air destroyed this storm for the north as Litchfield, Torrington area got 3 inches, POU got 2.




Elsewhere, LI, RI and Southeast CT had amounts up to 27 inches. Wind gusts there and on the cape were over 50mph. Much of S NJ received over 20 inches, with Roseland getting 11. Surf City, on the beach, received 20 inches. Southern NJ had both the intital moisture and moisture from the bomb off the coast.

Pictures are of snow cover as of today. Should last to Christmas Day when it will likely rain :(




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