Another round of strong to severe thunderstorms will target the Philadelphia and New York City metropolitan areas today on through tomorrow morning with the potential for wind damage, poor visibility, and widespread flash flooding and urban flooding. Traveling this afternoon and evening is not going to be very pleasant.
A very slow moving cold front will march towards the Philadelphia and New York City metropolitan areas by this afternoon and evening. Low clouds and fog will slowly burn off later this morning and lead to scattered cloud cover and humid conditions. Isolated showers and thunderstorms late this morning will increase in coverage this afternoon and evening as the cold front approaches. The strongest thunderstorms will be capable of very heavy downpours, frequent lightning, wind gusts over 60 mph, small hail, and an isolated tornado. These thunderstorms will be capable of producing hourly rainfall rates of over an inch per hour and reduce visibility to below a half a mile at times. The thunderstorms will begin to develop after 1 PM and will increase in coverage through tonight. Winds will be from the southwest at 5 to 15 mph. Temperatures will rise into the mid to upper 80s for highs.
By tomorrow, the cold front will push off the coast however showers will linger through the early afternoon hours. The showers will be capable of heavy downpours and will keep the flash flooding and urban flooding threat in place for the rush hour tomorrow morning. Skies will clear by tomorrow evening as high pressure takes hold. Winds will veer from the southwest to northwest at 5 to 15 mph. Low temperature will range from the upper 60s to lower 70s. High temperatures will range from the upper 70s to lower 80s along the coast and lower to mid 80s throughout the rest of the region.
High pressure will be in control for Thursday and Friday with scattered cloud cover to clear skies. Winds will be from the northwest and north at 5 to 15 mph. Low temperatures will range from the upper 50s to lower 60s over the interior and lower to mid 60s along the coast. High temperatures will range from the upper 70s to lower 80s along the coast and lower to mid 80s throughout the rest of the region.
A series of disturbances will rotate through the Philadelphia and New York City metropolitan areas on Saturday through Monday keeping the threat for scattered showers in place. Temperatures will range from the mid to upper 60's for lows and lower to mid 80s for highs.