Offices

Area Forecast Discussion · BOX

Boston/Norton, Massachusetts

Follow

National Weather Service - Boston / Norton, MA, 46 Commerce Way, Norton, Bristol County, MA 02766, United States of America

Map

Published

Alerts in the area

Forecast

weather.gov

Product header AFDBOX·FXUS61 KBOX 311708
Title
Area Forecast Discussion
Issued by
National Weather Service Boston/Norton MA
AWIPS ID
AFDBOX
WMO heading
FXUS61 KBOX 311708
Sequence
239

WHAT HAS CHANGED

No significant changes to the forecast.

KEY MESSAGES

  • Breezy and cool conditions expected for Halloween.
  • High pressure maintains quiet weather through at least Thursday with warmer than average highs in the 60s.

DISCUSSION

KEY MESSAGE 1...Breezy and cool conditions expected for Halloween.

A cooler day is expected today as the post-frontal air mass moves in. Aloft, 925 mb temperatures cool to around 0C and NW winds continue, yet weaken with high pressure building in. Highs on Halloween will only reach the 50s as a result. Skies clear, and winds falling to or near calm Halloween night will allow for radiational cooling, dropping lows to the 20s and low 30s for much of the region. As is normally the case, the coldest readings will be found across the far interior where lows fall to near 20 degrees.

KEY MESSAGE 2...High pressure maintains quiet weather through at least Thursday with warmer than average highs in the 60s.

High pressure will remain firmly in control of southern New England`s weather clear through at least mid to late week as this stretch of pleasant weather continues. A large high moving in from New York will initially move overhead on Sunday, replaced by another dropping south from Canada into Maine mid week. A weak trough will pass over the Canadian maritimes around Tuesday bringing the potential for some showers to northern New England but lack of moisture and dynamics over SNE will keep us dry. The next chance for a pattern change comes around late Thursday/Friday when a mid level trough may dig into the mid-Atlantic, but that is not a certainty at this point. EPS and GEFS ensembles paint a 70-90% chance of PWATS climbing above 1" Thursday-Saturday next week. Run to run variability shows less of a signal for QPF with the latest members showing probs of >0.5" of 24 hr QPF falling from 60-70% for the 12z runs to 30-50%. In the mean time, high pressure maintains a milder than average airmass overhead leading to comfortable highs in the 60s all week. Winds should be light until Friday when our passing low would bring a period of gusty winds.

AVIATION

18Z SATURDAY THROUGH THURSDAY

Forecaster Confidence Levels

Low - less than 30 percent.Moderate - 30 to 60 percent.High - greater than 60 percent.

18z TAF Update

Through Sunday...High confidence.

VFR. NW winds around 10-15 kt with sporadic gusts around 20 kts easing in the early afternoon. Winds then go light WNW/calm overnight before increasing from the SW to 5-10 kts.

KBOS Terminal... High confidence in TAF.

KBDL Terminal...High confidence in TAF.

Outlook /Sunday Night through Thursday/

Monday: VFR. Breezy.

Monday Night through Wednesday: VFR.

Wednesday Night: Mainly VFR, with local MVFR possible. Slight chance SHRA.

Thursday: VFR. Breezy. Chance SHRA.

MARINE

Forecaster Confidence Levels

Low - less than 30 percent.Moderate - 30 to 60 percent.High - greater than 60 percent.

Through Saturday Night...High confidence.

SCAs remain in effect through 18z this afternoon given NW winds gusting to 30 kt through tonight and seas to 5 ft into this morning for the outer waters. While winds gradually diminish through the day seas will generally be between 4-5 feet for the outer waters. Heading into this evening and overnight, winds and seas diminish; winds generally fall to 10 kt or less and seas decrease to around 2-3 ft. Tranquil conditions on Sunday with winds falling to 10-15 kt and 2-3 ft seas.

Outlook /Sunday Night through Thursday/

Monday: Winds less than 25 kt. Seas locally approaching 5 ft.

Monday Night through Wednesday: Winds less than 25 kt.

Wednesday Night: Winds less than 25 kt. Local rough seas.

Thursday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain showers.

BOX WATCHES/WARNINGS/ADVISORIES

CT

None.

MA

None.

RI

None.

MARINE

Small Craft Advisory until 2 PM EDT this afternoon for ANZ230>234-250-251-254-255.

DISCUSSION...McMinn/FTAVIATION...McMinnMARINE...McMinn/FT

Help & About

Forecast discussions

Each National Weather Service forecast office writes an Area Forecast Discussion: the forecasters' own account of the reasoning behind the forecast. It says what the weather models show and where they disagree, how confident the forecasters are, and what could change.

Offices issue one at least twice a day, early morning and afternoon, and update it as things change. It's written in sections, usually a synopsis, the near and long term, and the outlook for pilots, mariners and fire weather, ending with any watches, warnings and advisories in effect. Forecasters write in a shorthand of their own; the NWS glossary explains most of it.

Reading them here

  • Choose an office from the list or the map to read its latest discussion.
  • Search by city, state or office code, and sort the list A–Z or by distance, which asks for your location.
  • Above each discussion is the forecast where you are, once you've shared your location. Switch it to the forecast at the office.
  • Signed in, follow the offices you read most to keep them under Following.
  • A discussion's product header has the details of its bulletin, and a badge marks one the office has sent again with corrections.

Keyboard shortcuts

On the list of offices and their discussions.

/
Search offices
j
Next office
k
Previous office
m
Show the map
l
Show the list
f
Follow or unfollow the office
h
Show or hide the product header
Esc
Leave the search, or close this help
?
Show this help

With your AI assistant

The offices, their discussions, forecasts and alerts are also an MCP server, so an assistant like Claude can read them for you. It needs no sign-in and changes nothing. Its address is 

https://wxd.app/mcp
  • In Claude, under Settings, then Connectors, add a custom connector with that address.
  • In Claude Code, run claude mcp add --transport http forecast-discussions https://wxd.app/mcp.
  • In another client, add a server reached over streamable HTTP at that address.

Then ask, say, what the Tucson office thinks of the weekend.

An experiment by Christopher Green. Not affiliated with the National Weather Service.

The discussions are the forecast offices' own, as published by the National Weather Service.

Set in these faces, each under the SIL Open Font License 1.1:

  • Lato by Łukasz Dziedzic, for the text
  • Bricolage Grotesque by the Bricolage Grotesque Project Authors, for headings and the wordmark
  • DM Mono by the DM Mono Project Authors, for what the offices write

Icons from Heroicons and, for the weather, Phosphor Icons, both under the MIT License.