Overnight: Lo 50 °F
Saturday: Hi 65 °F
Dew Point: 47.5°F
Barometer: 29.65 in
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Friday: 0.00 in
Visibility: 10 miles
Now: 2 mph
Avg: 3 mph
Gusts: 11 mph
Point Forecast Updated 3:31 am EDT Oct 20, 2018
Lo 50 °F
A chance of showers. Cloudy, with a low around 50. Southwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Chance Showers then Partly Sunny
Hi 65 °F
A chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 65. West wind 10 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Lo 41 °F
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 41. West wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Slight Chance Showers then Mostly Sunny
Hi 48 °F
A slight chance of showers before 11am. Mostly sunny, with a high near 48. Northwest wind 11 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Lo 27 °F
Patchy frost. Otherwise, mostly clear, with a low around 27. Northwest wind 6 to 8 mph.
Areas Frost then Sunny
Hi 48 °F
Areas of frost before 10am. Otherwise, sunny, with a high near 48.
Lo 37 °F
Mostly cloudy, with a low around 37.
Mostly Cloudy then Chance Showers
Hi 53 °F
A chance of showers between noon and 5pm. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.
Lo 38 °F
Mostly cloudy, with a low around 38.
000 FXUS61 KBOX 200823 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 423 AM EDT Sat Oct 20 2018 .SYNOPSIS... Today/s mild weather will come to an end tonight as a cold front crosses the region. This will bring the return to blustery and chilly weather overnight and into Sunday. Temperature swings roll on through the following week. Warm ups out ahead of sweeping cold fronts associated with light showery weather and breezy conditions, frost / freeze conditions following as high pressure builds across the region. A potential Nor'Easter for the following weekend. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... 420 am update... An approaching shortwave has induced a modest southwest low level jet. This has resulted in much milder temperatures compared to this time yesterday. Most locations had temperatures in the 50s early this morning with readings around 60 across southeast New England. Deep moisture is rather limited with this shortwave...but the forcing was enough to generate a few showers early this morning. The bulk of these showers will focus along the southeast new England coast towards 12z on the nose of the LLJ and where a bit better moisture resides. We also will continue the marginal wind advisory for the Cape/Islands this morning. So far...we generally have seen some southwest wind gusts in the 30 to 40 mph range in this region. Winds have actually diminished a bit in this region over the last hour or two...but may see another surge of wind towards 12z as some showers may interact with some low level dry air. Winds should diminish by afternoon as the low level jet exits the region. As mentioned...the bulk of the showers should focus across far southeast New England after daybreak with mainly dry weather elsewhere. Even across far southeast New England any showers should pretty much be over by afternoon. Otherwise...some partial clearing and a mild start should allow afternoon highs to reach well into the 60s in many locales. Dry weather will dominate...but can not rule out a few spot showers during the late afternoon particularly across the interior. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/... Tonight... A strong cold front will cross the region this evening with perhaps a few showers. However...the better chance for more widespread showers will be overnight as a strong upper level shortwave/cold pool aloft moves into southern New England. 500T drop below -30C and there is a period of decent forcing with a bit of elevated instability. We think some of the model guidance is too dry tonight and feel the GFS/ECMWF are more realistic with QPF. Certainly not expecting a lot of precipitation...but do expect some showers across the region. In fact...temperatures may become cold enough for even some wet snow flakes across the high terrain. Low temperatures by daybreak should drop into the 30s across portions of the interior with lower 40s elsewhere. Sunday... A blustery and much chillier day across the region. We may have a few left over showers into part of the morning and perhaps even a few wet snow flakes in the high terrain. Otherwise...partial clearing expected with 850T dropping to between -6C and -8C. This should hold high temperatures mainly in the upper 40s to the lower 50s. Good mixing should yield northwest wind gusts of 25 to 35 mph. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... */ Highlights... - Coastal frost / freeze headlines Sunday night - Monday - Rolling temperature trend through midweek - Best wet-weather chances Tuesday - Wednesday with clipper low - First-season Nor'Easter potential the following weekend */ Overview... A first-season late week / following weekend Nor'Easter? Very wavy longwave pattern into October-end. Persistent NE Atlantic block that promotes -NAO / -AO trends, a N Atlantic ridge and upstream Eastern N American H5 trof. Meanwhile a progressive Eurasia to NE Pacific H3 jet max, flipping EPO to positive, +PNA maintained while the split- flow W CONUS regime deamplifies. The longwave pattern amplifying and tucking equatorward into the S-stream per tag-team teleconnections, an opportunity emerges in where ejecting NE Pacific energy carves S within preferred Eastern N America H5 trof, promoting height falls, usurping while stretching / ejecting E Pacific tropical energy. Any interaction / phasing unclear, there's increasing signal of S-stream obtaining greater cyclonic curvature within the aforemention H5 trof promoting potentially our first-season Nor'Easter by the weekend, more warm-core / maritime-tropical, potential significant rains as CPC notes a moderate risk for heavy precipitation within their 8-14 day forecast, EC preference in handling the -AO with their forecast. Until then, an undulating temperature trend. Clipping Canadian lows and highs up against an upstream split-flow. NW vs. SW flow. Flip- flop back and forth, temperatures averaging overall below-seasonable with the best chance of wet-weather Tuesday - Wednesday per Canadian clipper-low. Breezy conditions at times but seemingly below advisory- level criteria. Of remaining forecast areas where the growing season is still considered, only Sunday night - Monday there's the greatest chance of closing out frost / freeze headlines for those areas, the end of their growing season. Otherwise, not much else with respect to targets of opportunity. Consensus weighted forecast with greater weighting to EC / ECens out at longer ranges into late October. && .AVIATION /08Z SATURDAY THROUGH WEDNESDAY/... Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short Term /through Sunday/... Today...Moderate confidence. A few showers early this morning...which should focus themselves near the far southeast New England coast by 12z before moving offshore by afternoon. MVFR cigs have been pretty limited to far...but may see them become a bit more widespread for a few hours this morning. Otherwise...expect VFR conditions to dominate except perhaps the Cape/Islands where cigs may flirt with MVFR thresholds. SW wind gusts of 20 to 30 knots on the coastal plain and a bit stronger at times across the Cape/Islands will diminish this afternoon. Tonight...Moderate to high confidence. Mainly VFR but some showers overnight may result in briefly lower conditions. Sunday...Moderate to high confidence. Any left over showers should exit the region Sunday morning. Otherwise...VFR with NW wind gusts of 25 to 30 knots. KBOS Terminal...Moderate to high confidence in TAF. KBDL Terminal...Moderate to high confidence in TAF. Outlook /Sunday Night through Wednesday/... Sunday Night: VFR. Windy with areas gusts to 30 kt. Areas frost. Monday: VFR. Breezy. Areas frost. Monday Night: VFR. Tuesday: VFR. Breezy. Slight chance SHRA. Tuesday Night through Wednesday: VFR. Breezy. && .MARINE... Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Short Term /through Sunday/... Today...Moderate to high confidence. Gale warnings continue for all water this morning except for Boston Harbor/Narragansett Bay. Southwest winds will gust up to 35 knots at times especially in any showers. Otherwise...winds should diminish by afternoon as low level jet exits the region. Tonight...Moderate to high confidence. A cold front crosses the region this evening. This should allow small craft wind gusts to redevelop towards daybreak. Sunday...High confidence. Strong cold advection over the relatively mild ocean will result in northwest wind gusts of 30 to 35 knots. Strong small craft or gale headlines will be needed...but given current headlines will let the next shift decide based on the latest data. Outlook /Sunday Night through Wednesday/... Sunday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Local rough seas. Monday: Winds less than 25 kt. Seas locally approaching 5 ft. Monday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Slight chance of rain showers. Tuesday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Local rough seas. Slight chance of rain showers. Tuesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Wednesday: Low risk for Small Craft Advisory winds with gusts up to 20 kt. Seas locally approaching 5 ft. && .BOX WATCHES/WARNINGS/ADVISORIES... CT...None. MA...Wind Advisory until noon EDT today for MAZ022>024. RI...None. MARINE...Gale Warning until noon EDT today for ANZ231>235-237-250-251. Small Craft Advisory until 2 PM EDT this afternoon for ANZ230- 236. Gale Warning until 1 PM EDT this afternoon for ANZ254>256. && $$ SYNOPSIS...Frank/Sipprell NEAR TERM...Frank SHORT TERM...Frank LONG TERM...Sipprell AVIATION...Frank/Sipprell MARINE...Frank/Sipprell
Note: Rain measured automatically by weather station. Rain totals do not necessarily include melted frozen precipitation.
For more accurate, manually measured rain data, see the Local Precip Data page.
Rain Rate (/hr):
Rain Last 60 min:
Low wind chill today:
Low wind chill Friday:
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Wind gust Friday:
10 hours 52 minutes
Waxing Gibbous (82%)