DAYS 1-5 (JANUARY 27-31)
One final area of synoptic snowfall associated with energy from low #1 (see yesterday’s discussion) is producing small additional snowfall accumulation in a much of the region this morning. This energy will slide offshore by midday as low #2 will have taken over well south of the region, but a northeasterly air flow will bring some low level moisture in from the Atlantic and create showers of snow and/or rain during the day today, and a few other potential snow showers tonight into Thursday as low #3 emerges off the Mid Atlantic Coast and intensifies into a large ocean storm, which will track well southeast of New England through Friday. But as it turns to the north on Friday we will see a trough behind it try to swing through with one additional snow shower or snow squall chance on Friday, although most of this activity will likely stay just offshore or impact Cape Cod. What it will do is pull the coldest air of the season so far into our region Thursday night through early Saturday, before temperatures recover a little more by later in the weekend as high pressure builds in and the low moves away…
TODAY: Mostly cloudy. Periods of snow with up to 1/2 inch additional accumulation through mid morning, then scattered snow showers except rain or snow showers in coastal areas. Highs 30-37. Wind N-NE 5-15 MPH.
TONIGHT: Mostly cloudy. Scattered snow showers favoring eastern coastal areas with localized additional small accumulations. Lows 23-30. Wind NE 5-15 MPH.
THURSDAY: Mostly cloudy with snow showers likely in the morning, accumulating up to 1/2 inch in spots but local accumulation of up to an inch or two possible Cape Ann and MA South Shore. Partly sunny with scattered snow showers favoring Cape Cod during the afternoon. Highs 28-35 by midday but temperatures falling sharply later. Wind NE to N increasing to 15-25 MPH.
THURSDAY NIGHT: Partly cloudy with snow showers Cape Cod. Clear elsewhere. Lows 8-15. Wind N 15-25 MPH, higher gusts especially eastern coastal areas. Wind chill below zero at times.
FRIDAY: Mostly sunny to partly cloudy with most clouds eastern MA coastal areas especially Cape Cod. Additional snow showers possible mainly Cape Cod but brief snow showers/squalls possible from north to south in southeastern NH and eastern MA midday or afternoon. Highs 16-23. Wind N 15-25 MPH, higher gusts. Wind chill near zero at times.
FRIDAY NIGHT: Clear. Lows 6-13. Wind NW 5-15 MPH.
SATURDAY: Sunny. Highs 20-27. Wind NW 5-15 MPH.
SATURDAY NIGHT: Clear. Lows 0-7 except 8-15 urban centers. Wind NW 5-15 MPH, diminishing.
SUNDAY: Mostly sunny. Highs 26-33. Wind variable up to 10 MPH.
DAYS 6-10 (FEBRUARY 1-5)
Watching a storm potential for early next week (February 1-2) depending on the evolution of a low pressure area moving into the Ohio Valley then redevelop along the northern Mid Atlantic Coast. There are a lot of scenarios on the table for this ranging from a graze to a significant snowstorm to a storm that includes a variety of precipitation. Don’t pay attention to any model snowfall numbers without knowing the uncertainty. Fair, seasonably chilly weather follows this for the middle of next week and then expecting a temperature moderation toward the end of next week. This evolution will be the result of a weakening blocking pattern.
DAYS 11-15 (FEBRUARY 6-10)
Blocking becomes very weak to non-existent and we see a little but more ridging in the US Southeast. For us, looks like a milder pattern evolves and there will be a threat of some unsettled weather in the February 6-8 window. Also keep in mind that a “milder pattern” does not mean mild every day nor does it automatically mean that unsettled weather means “rainstorms”. We still have to be general beyond a few days and look at each situation in an objective and scientific fashion as it draws closer so we can make the best forecast possible.