June 10, 2013 Storm Updates

Occasional blog updates will be posted below on the moderate to heavy rain event affecting the region today and tonight. The next full blog update will be posted this evening.

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Final storm rain totals in NYC: (Updated at 8 AM)

Central Park - 1.46"
LaGuardia - 1.37"
JFK Airport - 1.40"

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Blog Updates: (Regional radar from the National Weather Service)


8:40 PM Storm Update

Widespread light to moderate rain continues to affect the region, and as of 8 PM, rain totals so far based on radar estimates and surface observations are about 1/2 inch in NW NJ and southern CT, 3/4 to 1 inch in northeast NJ, SE NY and NYC, and 1 to 2 inches in Long Island, where the highest storm totals are currently in the area with Shirley, NY up to 1.87 inch so far.

The warm front is currently located over southern PA and southern NJ, and is slowly advancing to the northeast. For the next 2 hours, the back end of the steady rain will move from SW to NE through the area, clearing northern NJ first and southern CT last, with lighter rain showers persisting afterwards. A line of heavy thunderstorms is located over eastern Pennsylvania into Washington DC and Virginia and is tracking to the northeast; little, if any thunder is expected as this reaches a more stable air mass over the area, although moderate to locally heavy rain and possible rumbles of thunder are expected to return after 10-11 PM, continuing through at least 12-2 AM before becoming light for the rest of the overnight hours.

Final storm rain totals based on current totals and projected additional totals with the incoming line of rain are likely to end up between 1 and 2 inches from NYC and further north/west into southern CT, locally up to 2.5 inches especially in Long Island. This is the last storm update for tonight; a detailed forecast discussion will be posted within the next few hours, focusing on a strong low pressure that may produce widespread heavy rain and severe weather on Thursday.


4:45 PM Storm Update

Since the last update, rain redeveloped over most of the area, with areas of light to moderate rain currently covering the entire area except for SE Connecticut. Rain totals so far range from under 1/4 inch inland, to 0.30" to 0.75" in NYC and south of I-80 in New Jersey. Occasional showers will continue through the rest of the day into the evening hours, with severe weather currently in the Mid Atlantic remaining south of the area. Forecast rain totals are still 3/4 to 1.5 inch, locally higher in some areas especially south of NYC.



1:20 PM Storm Update

During the last few hours, a band of heavy rain affected NYC, New Jersey south of I-80, and western Long Island with heavy rain, with 1/4 to 1/2 inch of rain observed so far. Further inland in northern NJ, SE NY, and southern CT, little rain fell so far.

Behind the current round of rain, a temporary break is expected, with occasional light to moderate rain expected to resume after 2-3 PM. These occasional showers will continue through this evening and early tonight, with lighter rain later in the overnight hours. At least 3/4 to 1.5 inch of rain is expected for most of the area with locally higher totals possible.


9:00 AM: Rain Approaching

As of 9 AM, widespread rain is spreading into the region ahead of a slow moving frontal boundary, currently over Maryland. Light to moderate rain currently covers Pennsylvania, New Jersey and southern NY state, with a band of heavy rain over central NJ moving northeast towards the area. This band will affect most of the area with heavy rain between 9:30 and 11 AM, with periods of light to moderate rain then expected to continue through the rest of the day into the early overnight hours, with heavy rain possible again this evening and early tonight. Rain totals are overall expected to end up between 3/4 and 1.5 inch, locally as high as 2 to 2.5 inches. Following the significant rain event with Andrea's remnants 3 days ago, flooding is possible with today's rainfall.

Today's updates will be posted every few hours; the next update will likely be posted after 2 PM. The next forecast update will be posted tonight, with more information on another possible rain event on Thursday and the weekend outlook.