Thursday, September 30, 2010

There is More Yet to Come

Most of New Jersey has been spared for most of Thursday however, we are still not of of the woods yet.
Parts of Southern Jersey had scattered showers and a few heavy down pours, nothing compared to deluge down South in the Carolinas (where they have had 15 inches plus of rain fall since Wednesday) leaving many residents believing that Jersey got lucky on this storm.

Strong low pressure from the Carolinas will move Northward and ride along the coast this evening through early Friday bringing with it heavy rain and strong gusting winds. Gusting winds have been on the rise throughout the day, and will continue to do so through the rest of the evening. Considering this, the National Weather Service continues to have the entire area under a wind advisory and high wind watches and warnings through the evening.
So far today, rainfall amounts have been quite impressive. Rainfall rates of 1-3 inches per hour have flooded areas from the Carolinas Northward, and more such is expected for Delaware, Pennsylvania, New Jersey, and portions of New York. The biggest concern here are streams flooding, leading into rivers flooding. Considering flood stages, and how much precipitation has fallen in total, most areas and rivers will continue to flood well into Friday evening possibly into the weekend.
Remember from last post: however much precipitation has fallen upstream, will flow and accumulate further downstream.
There was a tornado watch in effect for much of the day has been canceled, however in some of the stronger 'shower' cells, there RADAR has indicated there could be rotation within. Keep updated with the NWS or your local news for any rapidly changing (severe) weather.
East GOES Water Vapor Eastern U.S.: NHC/NOAA
Series of low pressure areas have been riding along a stationary front that is positioned along the East coast. Again, this 'swath' of moisture is from a tropical conveyor belt that is pumping a surge of tropical moisture into the Northeast. The first low passed just West of Jersey earlier today. The second low is/was still developing over the Carolinas this afternoon and will journey Northward and further East (compared to the last low that was further to the West). This slight shift to the East is associated with a dip in a cold jet from Canada. This area of low pressure will slog by and heavier rain will fall and create flooding. Along with the secondary moving though are the remnants of Nicole, which is also swept up in the tropical moisture. The reason for all of the flooding and the rain that has fallen (especially some areas more then others) is because these 'showers' are just following each other along the same track! Some areas in Delaware have seen as much as 10 inches of rain from a hour or two of a straight deluge!

As for the weather tonight. Rain, rain, and more rain! The heaviest rain will fall this evening over Maryland, Delaware, Pennsylvania, New Jersey, New York, and portions of New England. Thunderstorms are not likely however, it can not be ruled out.  Rain can fall 1-3 inches per hour. Power outages are possible due to wind gusts of 40 mph plus. Expect a pretty rough commute Friday morning. All should let up towards Friday afternoon.

Hey, at least this all isn't snow!

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