"Historic Long Island Flash Flooding - August 12-13, 2014"

[krispos42]

Historic Long Island Flash Flooding - August 12-13, 2014
Weather.gov > New York, NY > Historic Long Island Flash Flooding - August 12-13, 2014

SUMMARY: An official, New York State 24 hour precipitation record was set at Islip, NY on August 12-13, 2014 with 13.57" of rain (See Public Information Statement). 1.08" fell in just 9 minutes from 5:39 am to 5:47 am (See 1-Minute Islip, NY Rainfall Data)! This breaks the previous record of 11.6" at Tannersville, NY on August 27-28, 2011 during Hurricane/Tropical storm Irene. An anomalously deep upper level trough was moving into the northeast the morning of August 13th, transporting deep moisture over Long Island. At the surface, a parent low pressure system was moving across southeast Canada, with secondary low development just south of New York City. Heavy precipitation focused along and just north of the warm front associated with the secondary low pressure system. The mean storm motion was parallel to the orientation of the warm front and was significant in helping maintain heavy rain over Islip, NY for several hours. Click the links below to view different aspects of this historical event.

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http://www.weather.gov/OKX/HISTORICFLOODING_081314

I would encourage you to click the links to the radars and satellite images and such; quite an impressive array of data! And they have some pics from the NYDOT showing flooded roadways.



This actually isn't far from me; I'm just across the Sound.

[hrmjustin]

1. K&R!

[Lucky Luciano]

2. Impressively, most of that rain was over 4 hours! nt