textproduct: Boston / Norton

WHAT HAS CHANGED

No major changes since Wednesday morning update.

KEY MESSAGES

- Mild temperatures Thursday will be followed by a soaking rain Thursday night into Friday with cooler temperatures to follow

- Colder and blustery conditions to start the weekend with gradual improvement starting late Sunday or early Monday.

AVIATION /18Z WEDNESDAY THROUGH MONDAY/

Forecaster Confidence Levels...

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

00Z TAF Update...

Tonight...High confidence.

Mainly VFR conditions...But can not rule out brief marginal MVFR cigs possible toward daybreak along with a brief spot shower or two. S-SW winds may gust to between 20 and 25 knots near the coast late tonight with a strengthening LLJ. We have also included LLWS for the Cape/Islands as that southwest LLJ strengthens to around 50 knots.

Tomorrow...High confidence.

VFR conditions dominate outside perhaps some brief marginal MVFR cigs during the early-mid morning hours. SW wind gusts of 20-30 knots develop. Generally dry weather...but a few spot showers possible mainly early in the morning and perhaps later in the day near the NH border. Strong LLWS possible over the south coast with 40-50 knots of shear to 2000 feet.

Tomorrow Night...Moderate Confidence.

Conditions deteriroate to MVFR tomorrow night with -RA overspreading the region from west to east. Southwest winds becoming northwest between 06 and 12Z Friday.

KBOS Terminal...Moderate confidence.

Increased confidence that a sea-breeze will not occur today, but there does remain a slight chance for some onshore flow between 18-20Z.

KBDL Terminal...High confidence.

Outlook /Friday through Monday/...

Friday: Mainly VFR, with local MVFR possible. Breezy. Chance RA.

Friday Night: VFR. Breezy. Slight chance SN.

Saturday through Saturday Night: VFR.

Sunday through Sunday Night: VFR. Breezy.

Monday: VFR. Windy with local gusts up to 30 kt.

MARINE

Forecaster Confidence Levels...

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

Tonight Through Thursday Night...High confidence.

Winds increasing out of the south/southwest tonight as low- pressure passes well to the north. Moderate sustained winds between 15-25 knots with gusts up to 30 knots. Winds shift to the northwest tomorrow night as a cold front moves over the coastal waters with a round of showers. SCY criteria through the end of the week with a few gale force gusts possible on the edge of the outer marine zones.

Outlook /Friday Night through Monday/...

Friday: Winds less than 25 kt. Local rough seas. Chance of rain.

Friday Night: Winds less than 25 kt. Seas up to 5 ft.

Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft.

Saturday Night through Sunday Night: Winds less than 25 kt.

Monday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Local rough seas.

BOX WATCHES/WARNINGS/ADVISORIES

CT...None. MA...None. RI...None. MARINE...Small Craft Advisory from 8 AM Thursday to midnight EDT Thursday night for ANZ230-236. Small Craft Advisory from 5 AM Thursday to 8 AM EDT Friday for ANZ231>234-251. Small Craft Advisory from 5 AM Thursday to 5 PM EDT Friday for ANZ235-237. Small Craft Advisory from 11 PM this evening to 2 PM EDT Friday for ANZ250. Small Craft Advisory from 5 AM Thursday to 8 PM EDT Friday for ANZ254>256.