Looking at the satellite we can see a big change in the weather pattern developing. The warmth and heat of the past 7 days will soon be a distant memory as the ridge responsible is now out to sea. A tough is dropping into the area and will lead to a cool and dry air mass dropping south starting tonight and will last through next week.
Tropical storm Beryl off the east coast will be a big driver in this new pattern. It will start the process of a major blocking regime over the north Atlantic. A storm system developing over the Plains will merge with Beryl later this weekend and form a strong upper low over the Canadian Maritime which will block up the pattern and lead to a long-lasting trough over the east
For Thursday, warm temperatures will continue due to downsloping off the Appalachians but it will be much drier humidity wise so it will be comfortable with highs in the upper 70s to low 80s, a secondary but dry cold front will come through tomorrow and lead to a much cooler air mass , lows tomorrow night will range from the mid 40s interior to low 50s along the coast!!
Friday will feature increasing clouds as the storm system over the plains tracks NE through the eastern Great Lakes with increasing chance of showers and thunderstorms by sunset. Temperatures will be below normal with highs in the mid to upper 60s interior to low 70s at the coast
Showers and storms will become likely Friday night and lst through Saturday morning, some can be locally heavy, some severe storms are possible for extreme western zones out in PA due to the front impacting them during the day time with the right dynamics in place, but most of the region will see showers with imbedded storms, some can be strong
This front will be fast-moving and all activity should end by early afternoon but some pretty hefty rain amounts are likely , especially over Eastern PA into Southern NYS where 1-2 inches is expected, locally more in storms and at the coast , over Northern NJ 0.50-1.00 is possible and southern NJ/ Philadelphia metro a bit less due to the best dynamics being to their north, only 0.25-0.50 can be expected
A strong negative NAO phase is about to take hold which will slow down the pattern and keep the trough over the east in place for an extended period pf time
A negative AO will ensure that cooler air from Canada will be able to drop south
Sunday through next week a cool polar air mass will continue with temperatures remaining below normal with highs ranging from the upper 60s to low 70s through the area and lows in the upper 40s to mid 50s
CPC 6-10 DAY forecast
8-14 Day Forecast
Over the next 2 weeks average to below average temperatures are expected and above normal precipitation, with a heat ridge centering to our west, and the NJ WEATHER AUTHORITY Summer Forecast falls into place
Tomorrow , June 1st is the first day of meteorological Summer (: