Point Forecast Updated Sun Oct 20, 2019 7:09pm EDT
Slight Chance Light Rain then Cloudy
Lo 44 °F
A slight chance of rain before 10pm. Cloudy, with a low around 44. East wind around 3 mph. Chance of precipitation is 20%.
Hi 63 °F
Mostly sunny, with a high near 63. Northeast wind 3 to 8 mph.
Lo 45 °F
Patchy fog between 10pm and 5am. Partly cloudy, with a low around 45. Northeast wind around 6 mph.
Chance Very Light Rain
Hi 58 °F
A slight chance of rain between 9am and 10am, then a chance of drizzle and a slight chance of rain between 10am and 11am, then a chance of rain and a chance of drizzle. Mostly cloudy, with a high near 58. Northeast wind 5 to 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Chance Light Rain then Rain Showers Likely
Lo 52 °F
A chance of rain before 7pm, then rain showers likely. Cloudy, with a low around 52. Southeast wind 3 to 8 mph. Chance of precipitation is 70%.
Rain Showers Likely then Partly Sunny
Hi 65 °F
Rain showers likely before 11am. Partly sunny, with a high near 65. West wind 3 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Lo 41 °F
Mostly clear, with a low around 41. West wind 6 to 9 mph.
Hi 63 °F
Sunny, with a high near 63. Southwest wind 5 to 8 mph.
Lo 43 °F
Mostly clear, with a low around 43. Southwest wind around 7 mph.
Mostly Sunny then Slight Chance Rain Showers
Hi 63 °F
A slight chance of rain showers after noon. Mostly sunny, with a high near 63. Southwest wind around 8 mph.
Chance Rain Showers
Lo 46 °F
A chance of rain showers. Mostly cloudy, with a low around 46. West wind around 7 mph. Chance of precipitation is 40%.
Slight Chance Rain Showers
Hi 55 °F
A slight chance of rain showers before 3pm. Partly sunny, with a high near 55. Northwest wind around 8 mph.
Lo 32 °F
Partly cloudy, with a low around 32. Northwest wind around 7 mph.
Mostly Sunny then Slight Chance Rain Showers
Hi 53 °F
A slight chance of rain showers after 5pm. Mostly sunny, with a high near 53. Northwest wind around 7 mph.
000 FXUS61 KBOX 202250 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 650 PM EDT Sun Oct 20 2019 .SYNOPSIS... South coastal skirting rain overnight associated with the remnants of Nestor. Majority clearing out Monday however clouds lingering across the Cape and Islands. Dreary conditions returning out ahead of an approaching cold front Tuesday, with a period of showers Tuesday night into early Wednesday. Dry and seasonably mild conditions follow Wednesday afternoon into Friday although a cold front may bring a few showers Friday afternoon and night. High pressure builds in for next weekend. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... 645 PM update... Remnant moisture from Nestor getting drawn northward ahead of weak mid level shortwave with area of light rain across central MA and northern CT. Drier air is beginning to move in from the west with rain eroding across western MA. Meanwhile, low levels across eastern MA remain dry and this rain will struggle to get into NE MA where low levels don't really moisten up. So expect the light rain to gradually dissipate across interior MA and CT through the evening with focus shifting to the south coast overnight. Blended previous forecast with hi-res guidance for PoPs/QPF. Rainfall 0.10-0.20" confined to immediate south coast increasing to around 0.50" for ACK. Breezy E/NE winds developing Cape/Islands late tonight not only with isallobaric wind but also the gradient wind subsequent of Nestor's close approach. Gusts up to 30 mph are possible towards Monday morning across the Islands. && .SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/... 2 pm update... Monday into Monday night... Nestor remnants not going far. N-Plains cyclone occludes, tightens towards 990 mb, the mid-upper level ridge downstream builds across the NE CONUS pushing the mid-latitude flow northward resulting in a wobbling, cut-off Nestor lingering S/E of the 40N/70W benchmark. An E-fetch drawn from the wrapping tropical low-level moisture round Nestor back towards the approaching midweek occluded front, riding beneath a dry-inversion settling down around H8-9. Moisture pooling, saturating, while partial clearing is expected on Monday, going into Monday night forecasting lowering conditions with nocturnal cooling, brought inland by a stout E low-level jet, upsloping, can't rule out some drizzle as well for E/SE-coastal MA. So dry and seasonable for Monday with highs getting into the low 60s for most of New England but E/SE-coastal MA with onshore flow and lingering clouds. Then overnight it turns dreary with lows in the 40s. && .LONG TERM /TUESDAY THROUGH SUNDAY/... Highlights... * Low clouds Tue with light rain or patchy drizzle at times * Period of showers Tue night into early Wed then improving conditions * Dry and mild weather Thu/Fri * Continued mainly dry and cooler for next weekend Tuesday into Wednesday... Easterly flow Tue with considerable low level moisture developing will result in low clouds overspreading much of the region. Models generating light QPF moving in from the east. This is likely a signal for some light rain or patchy drizzle developing within moist easterly flow beneath dry air through the mid levels. Then approaching shortwave and attending cold front moves into the region Tue night. Deep moisture plume and low level convergence will result in a period of showers moving west to east across SNE. The low level jet is somewhat fractured and not particularly strong so not expecting an organized area of heavy rainfall. But some locally heavier rain is possible Tue night as a wave develops on the front which enhances low level convergence. However, better chance likely across Maine on Wed north of the developing surface wave where decent E/SE low level jet develops. Much of the shower activity should be east of New Eng by Wed morning, but can't rule out a few lingering showers into Wed morning, mainly across eastern MA. Otherwise, expect increasing sunshine Wed as good mid level drying moves in with mild temps well into the 60s. Thursday through Sunday... High pres moves off the mid Atlc coast Thu with return flow developing. Sunshine and seasonable temps for Thu. Models differ on the pattern for the end of the week into the weekend. ECMWF showing a split flow pattern with dominant northern stream into the weekend with southern stream low pres approaching late in the weekend. GFS has more of phased system with rain impacting SNE on Sat. Leaning toward ECMWF solution which has support of other global guidance including UKMET/GGEM. This supports a frontal passage late Fri/Fri night which may be accompanied by some showers then high pres building in for the weekend with dry and cooler conditions. Will have to watch possible southern stream system approaching late in the weekend. If timing speeds up then some rain may begin to impact the region sometime Sunday, but going with a dry forecast for now. && .AVIATION /00Z MONDAY THROUGH FRIDAY/... Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short Term /through Monday Night/... 00z update... Tonight...Moderate confidence. BKN-OVC VFR cigs with MVFR developing along the south coast, with risk of IFR across the Cape and Islands late tonight. Clearing western MA and CT valley toward daybreak. Increasing E/NE wind 10 to 15 kts along the S coast, as high as 20 kts across the Cape and Islands with gusts as high as 30 kts that heighten early morning Monday. Monday...Moderate confidence. Low-end VFR - MVFR CIGs eroding S/E through morning except out across southeast MA. A NE wind persisting, MVFR BKN-OVC CIGs linger across the Cape and Islands much of the day. Breezy E/NE winds throughout especially along the coast, 10 to 15 kts, gusts to 25 kts. Monday night...Moderate confidence. BKN-OVC lowering CIGs over all of S New England. Confident MVFR however could see IFR issues. Winds becoming E, remaining 10 to 15 kts, strongest along the coast with gusts up to 25 kts. KBOS Terminal... High confidence in TAF. KBDL Terminal... High confidence in TAF. Outlook /Tuesday through Friday/...Moderate confidence. Tuesday: Mainly MVFR, with local IFR possible. Breezy. Chance RA, chance DZ. Tuesday Night: Mainly MVFR, with areas IFR possible. SHRA likely. Wednesday: Mainly VFR, with local MVFR possible. Breezy. Wednesday Night: VFR. Breezy. Thursday through Thursday Night: VFR. Friday: Mainly VFR, with local MVFR possible. Breezy. Slight chance SHRA. && .MARINE... Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short Term /through Monday Night/... 2 pm update... Nestor remnants sweep N/E near and SE of the 40N/70W benchmark overnight, stalling and wobbling Monday into Monday night. With high pressure settled N across New England into the SE Canadian maritimes, the neighboring airmasses yield a stout E/NE gradient wind into S New England. Generally 10 to 15 kts with gusts up as high as 30 kts Monday morning. Seas potentially building 6 to 8 feet over the S/SE waters. SMALL CRAFT HEADLINES posted for those outer waters up against the S-coast, Cape Cod and Islands. Rain overnight tonight, lower visibility with rain especially on the S-waters. Partial clearing Monday, but lower conditions return Monday night along with forecast drizzle. Outlook /Tuesday through Friday/...Moderate confidence. Tuesday: Winds less than 25 kt. Areas of rough seas. Chance of rain, chance of drizzle. Tuesday Night: Winds less than 25 kt. Areas of rough seas. Rain showers likely. Wednesday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft. Chance of rain showers. Wednesday Night through Thursday: Winds less than 25 kt. Seas up to 5 ft. Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Friday: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers. && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...None. RI...None. MARINE...Small Craft Advisory from 6 AM to 8 PM EDT Monday for ANZ232>234. Small Craft Advisory from 4 AM Monday to 6 AM EDT Tuesday for ANZ235-237. Small Craft Advisory from 2 PM Monday to 6 AM EDT Tuesday for ANZ250. Small Craft Advisory from 2 AM Monday to 6 AM EDT Tuesday for ANZ254-255. Small Craft Advisory from midnight tonight to 6 AM EDT Tuesday for ANZ256. && $$ SYNOPSIS...KJC/Sipprell NEAR TERM...KJC/Sipprell SHORT TERM...Sipprell LONG TERM...KJC AVIATION...KJC/Sipprell MARINE...KJC/Sipprell
Zone forecast: https://api.weather.gov/zones/forecast/MAZ014/forecast
Hourly forecast: https://api.weather.gov/gridpoints/BOX/64,79/forecast/hourly
Hourly detail: https://api.weather.gov/gridpoints/BOX/64,79
Point detail: https://api.weather.gov/points/42.4399,-71.2405