DAYS 1-5 (MARCH 14-18)<\/p>\n\n\n\n
Pi Day Northeaster underway. Intensifying low pressure gets captured by its upper level partner while moving to the north, and will end up performing a cyclonic loop just off the MA East Coast later today and this evening. As of early morning, moderate to heavy rainfall is occurring in most of the WHW forecast area except it has changed to snow during the night outside of I-495 to the north of I-90 in many areas. This changeover will progress slowly southeastward at first, then pick up momentum in an irregular fashion, responsive to precipitation intensity as well as trending southeastward as we go through the day. The following is an update of the system break-down as far as it impact this area…<\/p>\n\n\n\n
Precipitation: Early this morning snow southwestern NH and north central MA, rain elsewhere. The rapid deepening of the low center will initiate dynamic cooling, most rapidly where precipitation is heaviest but general northwest to southeast trend as well, perhaps without a clear-cut rain\/snow line. The last places to see this changeover take place should be the South Coast and Cape Cod as well as the Islands. Unless an area is under a heavy snow band, some of the snowfall will have a difficult time accumulating, especially the closer to the coast you are, during the daylight hours. As darkness falls, accumulation becomes easier and the majority of the accumulation especially for eastern areas will take place this evening. There may be a brief flip back to rain for parts of Cape Cod and even a brief cut-off of precipitation as the low center makes its closest pass and a dry slot briefly moves over that region. Snow tapers to snow\/rain showers west to east Wednesday morning before coming to an end.<\/p>\n\n\n\n
Snowfall totals for the event: Slushy coating to 2 inches Cape Cod \/ Islands as well as the immediate South Coast westward through immediate coastal RI and CT, 2-4 inches interior southeastern CT through south central RI to just inland from the MA South Coast up through the MA South Shore, as well as the tip of Cape Ann MA, 4-8 inches northeastern CT and northern RI through the I-90 and I-95 belt including Providence to Boston\u2019s Metro West including the city of Boston (except 2-4 inches Logan Airport) and up to the immediate NH Seacoast, 8-12 inches central MA and interior southern NH lower elevations eastward to the I-495 region north of I-90, and 12-16 inches in the higher terrain of central MA and interior southern NH. Caveats for snowfall remain the same but with a less likely dry slot into eastern areas (except Cape Cod). There is still a slight chance of higher snowfall in the 2-4 inch zone with any heavier snow banding. Basically this would just mean the 4-8 inch area would be nudged slightly to the east and southeast.<\/p>\n\n\n\n
Wind: East to northeast early morning, northeast to north late morning through afternoon, north to northwest tonight into Wednesday. Peak wind time will be during the evening to early nighttime hours from the north with peak gusts expected to be 35-45 MPH inland, strongest in higher elevations, and 45-55 MPH in coastal areas with occasional gusts above 55 MPH possible. This will occur as the low center makes its closest pass to the MA eastern coast on the southbound swing of its loop. By later tonight and Wednesday, gusts will be more in the 20-30 MPH range, still strongest near the coast and over some of the higher elevations of central MA and southern NH as the air mass becomes mixed by some solar heating.<\/p>\n\n\n\n
Power outage potential: With temperatures not far from freezing, and in some cases slightly above freezing where it snows, snow load can become a problem for trees and power lines, and combined with strong, gusty winds, this will likely lead to scattered power outages, especially where snow load \/ wind gust combo is maximized. The 2 most vulnerable areas for higher clusters of outages will be heaviest snow areas of north central MA and southern NH, as well as highest wind gust areas along the coastal plain.<\/p>\n\n\n\n
Coastal flooding threat: Fortunately, this aspect of the storm will be limited due to astronomically low tides and strongest winds more from the north than directly onshore over a larger portion of the coastline. However, northeast-facing and north-facing shores most vulnerable will likely see minor to moderate flooding during high tide times Tuesday to early Wednesday.<\/p>\n\n\n\n
Commute impacts: Wet roads in most major areas for this morning but watch for ponding due to heavy rainfall. Exception will be slushy and snow covered roads where it has been snowing already in southwestern NH to north central MA higher elevations. This evening’s commute will be the most impacted by snow, most extensively away from the shores with more of a tendency for slushy or just wet roads right along the coastline unless snowing heavily at any given time. Just wet roads expected for the Wednesday morning commute and no issues for the evening one.<\/p>\n\n\n\n
Post storm improvement Wednesday night and Thursday as high pressure builds in. No changes to the outlook beyond that for late week with a warm front moving through on Friday with more clouds, milder air, and maybe a touch of rain but mainly dry, then a cold front moving into the region Saturday, with mild rain chances to start, but some chance that a second wave of low pressure could meet colder air and produce some mix to snow behind that (lower confidence on that part and will monitor during the week).<\/p>\n\n\n\n
TODAY: Overcast. Snow well inland and higher elevations. Rain changing to snow elsewhere. Snow will become heavy at times. Temperatures fall slightly to 30-37. Wind NE-N 15-25 MPH inland and 25-35 MPH coast, with gusts above 30 MPH inland and above 50 MPH coast.<\/p>\n\n\n\n
TONIGHT: Overcast. Snow tapers off gradually but still can be heavy at times in the evening. See above discussion for total accumulation expectations. Lows 28-35. Wind N 15-35 MPH, higher gusts especially in coastal areas.<\/p>\n\n\n\n
WEDNESDAY: Mostly cloudy with snow and rain showers likely, becoming more isolated with time. Highs 35-42. Wind N-NW 15-30 MPH, higher gusts.<\/p>\n\n\n\n
WEDNESDAY NIGHT: Mostly cloudy early, then clearing. Lows 25-32. Wind NW 5-15 MPH.<\/p>\n\n\n\n
THURSDAY: Mostly sunny. Highs 41-48. Wind NW 5-15 MPH.<\/p>\n\n\n\n
THURSDAY NIGHT: Clear. Lows 26-33. Wind variable up to 10 MPH.<\/p>\n\n\n\n
FRIDAY: Variably cloudy. Slight chance of brief light rain especially north and west of Boston. Highs 43-50. Wind SW 5-15 MPH.<\/p>\n\n\n\n
FRIDAY NIGHT: Mostly cloudy. Lows 40-47. Wind SW 5-15 MPH.<\/p>\n\n\n\n
SATURDAY: Cloudy. Rain showers likely morning. Chance of rain\/mix\/snow afternoon. Temperatures fall 40s to 30s. Wind shifting to N 5-15 MPH.<\/p>\n\n\n\n
DAYS 6-10 (MARCH 19-23)<\/p>\n\n\n\n
March 19 looks dry, breezy, and chilly to end the final weekend of winter. Vernal Equinox occurs Monday March 20 and weather looks tranquil for that day and the first full day of spring March 21. Unsettled weather may arrive with rain\/mix\/snow potential for late in the period.<\/p>\n\n\n\n
DAYS 11-15 (MARCH 24-28)<\/p>\n\n\n\n
One or two low pressure systems can impact the region with unsettled weather with an active late March pattern. Temperatures mostly below normal.<\/p>\n","protected":false},"excerpt":{"rendered":"
DAYS 1-5 (MARCH 14-18) Pi Day Northeaster underway. Intensifying low pressure gets captured by its upper level partner while moving to the north, and will end up performing a cyclonic loop just off the MA East Coast later today and this evening. As of early morning, moderate to heavy rainfall is occurring in most of … Continue reading Tuesday March 14 2023 Forecast (7:13AM)<\/span>