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Tranquil start gives way to flash flooding rainfall

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High pressure over New England this morning will produce pleasant weather conditions for today, however the tranquil weather conditions will not last long with the threat of very heavy rainfall on the way for tomorrow night.

Clear skies are expected through this afternoon followed by increasing clouds tonight as high pressure moves towards the coastal waters of New England. Winds will back from the southwest to southeast at 5 to 15 mph through this afternoon. Temperatures will rise into the lower to mid 80's over much of New Jersey, upper 70's to lower 80's along the immediate coast.

Tonight, clouds will increase with overcast skies by morning and rainfall entering southwestern New Jersey by the mid morning hours. Winds will back from the south to southeast at 5 to 15 mph. Temperatures will fall into the mid to upper 60's for lows.

Tomorrow, rain will overspread New Jersey and will become heavy at times in the afternoon and evening. The rain will continue with very heavy downpours into Wednesday morning, tapering off towards Wednesday early afternoon. Rainfall amounts of one to two inches can be expected throughout New Jersey with local amounts over two inches possible in areas of heavy downpours. The best potential for the heaviest rainfall will be along the Delaware River and much of northwestern New Jersey. Winds will back from the southeast to northwest at 10 to 20 mph. Temperatures will range from the mid to upper 70's for highs tomorrow. On Wednesday, temperatures will range from the lower to mid 60's for lows and lower to mid 80's for highs.

Canadian high pressure will take hold by Wednesday night and remain in control through Sunday with clear skies to scattered cloud cover. A cool, dry air mass will be in place through the period. Low temperatures will range from the lower to mid 50's over northwestern New Jersey and upper 50's to lower 60's along the coast and in urban locations. High temperatures will range from the upper 70's to lower 80's throughout New Jersey.