Tranquil End To The Week

Tranquil weather conditions will end the week for the Philadelphia and New York City metropolitan areas with mild conditions and a light west to southwesterly wind. However, a much cooler air mass is on the way by Sunday morning and very stormy weather conditions are likely to return by the middle of next week.

Once the fog lifts over the region this morning, scattered clouds can be expected throughout the Philadelphia and New York City metropolitan areas. Winds will be from the west and southwest at 5 to 15 mph through this afternoon. Temperatures will rise into the upper 60’s to lower 70’s over the interior and lower to mid 70’s along the coast.

Scattered clouds can be expected tonight with fog redeveloping towards morning. The fog may be locally dense in some locations with visibility below 2 miles. Winds will be from the southwest at 5 to 15 mph. Temperatures will fall into the upper 40’s to lower 50’s over the interior and mid to upper 50’s along the immediate coast.

A cold front will move through the region tomorrow afternoon into early Sunday morning with scattered to broke cloud cover along with widely scattered to isolated showers. The showers will be capable of a brief heavy downpour. Winds will be from the southwest at 10 to 20 mph, veering to the northwest as the cold front moves through. Temperatures will rise into the upper 60’s to lower 70’s through the Philadelphia and New York City metropolitan areas.

Cold Polar high pressure will be in control by Sunday morning through Monday with clear skies to scattered cloud cover. Winds will be from the northwest at 10 to 20 mph with higher gusts on Sunday, weakening to around 5 mph by Monday morning. Low temperatures on Sunday will range from the upper 30’s to lower 40’s over the interior and lower to mid 40’s along the coast. High temperatures on Sunday will range from the mid to upper 50’s throughout the region. Low temperatures on Monday will range from the upper 20’s to lower 30’s over the interior and mid to upper 30’s along the coast. Frost and freeze conditions are expected on Monday morning throughout much of the northern Mid Atlantic.

A strong upper level disturbance will dive towards the Mid Atlantic coastal waters on Tuesday morning and spawn an area of low pressure off the Delaware and southern New Jersey coast on Tuesday afternoon. Clouds will increase as a result with showers developing from the coastal waters and then expanding back towards the west. Winds will veer to the northeast at 10 to 20 mph as the low pressure system develops. Low temperatures on Tuesday will range from the upper 30’s to lower 40’s over the interior and mid 40’s along the coast. High temperatures will range from the lower to mid 60’s throughout the Philadelphia and New York City metropolitan areas.

The coastal low will stall off the New Jersey coast for Tuesday night on through Thursday with periods of moderate to heavy rainfall. Rainfall amounts over an inch are likely throughout the region with significantly higher rainfall amounts along the coast. Winds will be from the northeast at 15 to 30 mph with higher gusts. Coastal flooding will be a concern along the coast along with localized flash flooding due to heavy rainfall. The track and intensity of this storm is still very much in question and thus changes to the forecast are possible. Temperatures will range from the mid to upper 40’s for lows and mid to upper 50’s for highs throughout the region.

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