Norluns, low pressure centers, upper troughs. It’s all about low pressure areas through Thursday, basically as described in the previous blog with the inverted trough lifting from northeastern MA through eastern NH into southern Maine as broad upper low pressure crosses the region through Thursday and ignites another surface low just east of New England by early Thursday which then move northward. After the snow showers occur as expected, we’ll get a blast of Arctic air with wind Thursday night and Friday. We’re still watching the next storm system for the weekend, the track of which is in question, and as a result so is the amount of milder air that gets involved. Been leaning toward the colder solution for this event Saturday night and Sunday because of the weakness of the expected low and the tremendous cold snowpack in place. We may see warm enough air come in aloft to result in sleet and freezing rain, and even plain rain in some areas by Sunday as it does turn somewhat milder, but this will be a tricky forecast right up until the event occurs. Dry and cold weather is expected to return Monday and last through Tuesday. An offshore storm will threaten the region with some snow next Wednesday but it is, of course, too far away to figure any details with that threat.
SOUTHEASTERN NEW ENGLAND FORECAST…
OVERNIGHT: Mostly cloudy. Snow showers, most numerous in Essex County MA northward. Accumulation of 1 to 3 inches Essex County MA into NH, less than 1 inch most other areas. Lows in the 10s. Wind light variable.
THURSDAY: Mostly cloudy with snow showers in the morning. Additional accumulation of up to 1 inch. Partly sunny with isolated snow showers in the afternoon. Highs 25-30 by midday, falling back through the 20s in the afternoon. Wind NW increasing to 15-25 MPH with higher gusts.
THURSDAY NIGHT: Partly cloudy. Lows around 0. Wind NW 15-25 MPH and gusty. Wind chill well below 0.
FRIDAY: Partly cloudy. Highs around 15. Wind NW 15-25 MPH and gusty. Wind chill near to below 0.
SATURDAY: Increasing clouds. Snow at night. Low 5. High 25.
SUNDAY: Cloudy. Snow/sleet/ice/rain. Low 20. High 30 north to 40 far south.
MONDAY: Partly cloudy. Low 5. High 25.
TUESDAY: Mostly sunny. Low 5. High 25.
WEDNESDAY: Mostly cloudy. Chance of snow. Low 15. High 25.