Saturday March 29th – 30th Cape Ann Weekend Weather Cast..

Marine Weekend Forecast…
Sat NW winds 5 to 10 kt…becoming NE in the afternoon. Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 nm.
Sat Night NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Rain. Vsby 1 to 3 nm.
Sun NE winds 10 to 15 kt…becoming N 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Rain. Vsby 1 to 3 nm.
Sun Night N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 7 ft. Rain.

Weekend Forecast ……
Sun and clouds  early Saturday then it goes all down hill from there.. Temps drop through the 40′s late Sat aft with heavy rains Saturday Night and Sunday … Lows Saturday Night around 37-43 degrees .. Sunday’s highs in the low 40′s cool and raw with periods of rain..
Winds begin to pick up later Saturday afternoon and ESP Saturday Night through Sunday from the NE at 25-35mph sustained with gusts close to 50mph!
Depending on the position and strength of the low pressure system winds could be stronger then what I’m currently forecasting …Cut off low pressure will be trapped in the upper levels off our coastline south of Cape Cod due to the developing Blocking going on up in the North Atlantic . The “Greenland Block ” .. Via thanks to my pal Anthony for sharing this great graph ..

We also need to watch for excessive tide cycles with an onshore fetch for more then 48hrs .. Piling waves and water up on the coastline cycle after cycle .. Coastal Flooding will become a concern across Eastern Ma Coastal Communities minor to perhaps moderate with significant beach erosion also possible .. So something to watch very carefully ..

As Far as QPF amounts go , looking at a Widespread 2-4″ of rain with isolated locally higher amounts possible …

Worst Saturday Night Into Sunday …

Now the Wintery Aspect to this storm ..Will be carefully watching colder air drawing south Sunday Night and Monday from Northern New England and SE Canada .. It’s this cold air that may change our rain over to sleet then snow Sunday Night into Monday … Early guess would be for me to call for 2-4″ of snow , but that’s being premature and I need to see if there will be any precipitation left over on the back side of our departing low pressure system .. If it departs at all ..

No panic this isn’t a block buster or powerful storm / but it will be strong and we have managed much stronger storms then what this one will bring !
Thanks again for viewing …
Have a Great Weekend !
GMG
Weatherman
Peter Lovasco

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