This a complex storm in several ways. Given the storm track into the Gulf of Maine, it sets up different types of precipitation. There is a lot of moisture involved. There is rapid intensification that will qualify this as a bombogenesis event. There is wind, which along with heavy snow could bring power outages. Along with all of that, a razor thin margin of error for snow amounts along the southwest coast.
This is going to be a good storm. Our first significant widespread event of the season. Be ready.
The storm starts off as rain in the morning hours. As it intensifies and moves into the Gulf of Maine this afternoon and into tonight, it taps into cold air to the north, and begins the change over to snow.
Saturday night, the storm proceeds to the east/northeast. Southern areas appear done with accumulation between 2-4 AM. Heavy snow tapers to snow showers over the western mountains by daylight. Cold air begins to collapse over eastern areas, changing rain to snow.
The storm continues to move off to the east. The heavier precipitation ends over eastern areas by early afternoon. Strong northwesterly winds generate upslope snow for the higher elevations, which are likely to continue into Sunday night. Central and southern areas see the sun poke through the clouds.
High water content & dynamic cooling
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