Below, occasional storm updates will be posted on the rain and thunderstorms affecting the region, primarily north and west of NYC. No forecast discussion will be posted today; the next forecast will be posted on Saturday, August 10.
3:30 PM: Scattered Storms This Afternoon
The morning round of heavy rain moved out of the area, after an additional 1/4 to 1/2 inch fell across southern CT. The widespread heavy rain and flash flooding mostly stayed north of the area, with widespread 1-3 inches of rain in New York state and New England, with NW NJ and SE NY in the southern end of this heavy rain zone. Since then, partial clearing in the cloud cover took place with temperatures reaching the low to mid 80s along with humid conditions resulting in heat index values reaching the low 90s. Parameters for severe weather remain marginal, however, and widespread strong to severe thunderstorms are unlikely this afternoon and evening. Regardless, additional scattered storms are expected later today especially west of NYC, with the main risks consisting of heavy rainfall locally over 1/2 to 1 inch and localized strong wind gusts over 40-50 mph with the stronger cells. Storm activity is expected to end tonight as the cold front slowly moves through.
Another storm update may be posted in the next 1-2 hours if necessary, otherwise the next forecast update will be posted on Saturday evening.
8:45 AM: Heavy Rain, Flash Flooding North Of NYC
After yesterday’s storm activity died down, having produced locally moderate-heavy rain west of NYC and a microburst in Rockland county, NY, which caused tree damage and power outages, an area of heavy rain and thunderstorms formed over Pennsylvania last night, intensifying and expanding as it spread into NY state and New England early this morning. This area of rain mostly affected northwestern parts of the area, especially in Sussex and Orange counties, where 1-3 inches of rain fell in a short period of time, causing areas of flash flooding. This area of rain has since moved to the north, into NY state and New England, where it is producing widespread heavy rainfall, with light-moderate rain persisting in southern CT.
The area is expected to dry up through the rest of the morning hours; additional widespread heavy rain is unlikely later today, although more scattered thunderstorms are expected for this afternoon and evening, some of which could be locally heavy, with highs ranging from the upper 70s inland to the mid 80s near NYC. The cold front will move through tonight, pushing the rain offshore as well with drier conditions, more sunshine and warmer temperatures for Saturday.