Marine Weather and Tide Forecast for Rockland, ME

NEAR TERM /UNTIL 6 PM THIS EVENING/
Update...Minor changes to reflect latest observational trends.

Previous...

High pressure remains centered to the east of New England, and gradually shifts southward through the day. This sets up a southerly flow with an increasingly warm and moist airmass moving in. At the same time, a broad upper level low pressure system is slowly drifting north through the Mid Atlantic and spreads increasingly thickening cloud cover from south to north today.

Light onshore southerly flow keeps the immediate coast cooler with highs mainly in the low to mid 60s, but temperatures quickly moderate inland with the light wind speeds. Just about 10 miles back from the coast low 70s are expected, with mid 70s not much further inland from there. Across southern New Hampshire, highs likely top out in the mid 70s before the cloud cover thickens in the afternoon. A stray shower can't be ruled out here either before sunset. Further north however, more sunshine allows temps to warm into the upper 70s to near 80 toward the Canadian border.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/
Moisture continues to increase through the overnight as the system moves closer. Scattered showers are expected to move from south to north overnight, gradually weakening and eventually dissipating as they move north. This brings scattered showers into southern New Hampshire during the evening hours, and through the overnight hours for central and northern locations.
Temperatures remain mild through the overnight with the increasing cloud cover. Along the coastal plain sees the coolest temperatures as lows drop into the low 50s with patchy fog.
Elsewhere however, temperatures spend much of the night in the 60s, eventually reaching the upper 50s late tonight.

The weak forcing that brings the scattered showers overnight weakens tomorrow as the airmass continues to moisten. Some breaks in the clouds and thin spots are likely through the day, allowing temps to warm into the 60s and 70s in most spots. The warmest readings will again be through the Connecticut River Valley and north of the mountains, while the coastline is likely to be held to the upper 50s to near 60 with clouds and some fog in the continued onshore flow.

Dew points rise into the 60s by the afternoon hours. With a lack of organized forcing, widely scattered pop up showers and a few thunderstorms are likely by the afternoon, with the best chance for a thunderstorm across southwest New Hampshire.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/
1045 PM Update... Little change in the latest National Blend of Model guidance. After a dry start, shower chances look to increase late week into the upcoming weekend.

Previously...
Looking fairly wet Friday night through Sunday, and possibly into Monday as an upper level low slowly approaches from the west and moves over the region toward Sunday/Monday. Model agreement decreases Sunday/Monday on the track of the upper low, which will influence when the rain chances finally decrease.
Not looking favorable for any terribly heavy rain in any one particular period late Friday through early next week, and not anticipating any significant flooding concerns, but still something to keep an eye on. Temperatures looking near or a bit below average from the weekend into early next week, though there is a good amount of uncertainty in temperatures. Depending on the track of the upper low, can't rule out some mountaintop snow from Sunday night through Tuesday.

AVIATION /15Z WEDNESDAY THROUGH SUNDAY/
Short Term...VFR prevails today. Ceilings lower late this afternoon and evening from south to north. MVFR ceilings likely reach southern terminals around midnight, and slowly spread northward overnight. HIE likely remains with VFR conditions through tomorrow. IFR conditions in fog are possible along coastal terminals late tonight, and would likely linger through at least the morning tomorrow. Broken ceilings are expected for most of the day tomorrow at other terminals, with mainly MVFR prevailing.

Long Term...Along the coast, predominantly IFR through Friday night, and possibly into the weekend as well. Periods of MVFR/VFR are likely, but IFR should be more common.

Inland, MVFR/IFR possible mainly late night/early morning Thu/Fri, with MVFR/IFR in the afternoon and early evening hours.
MVFR/IFR becomes the more common conditions inland late Fri night into the weekend.

MARINE
Short Term...Broad high pressure keeps winds and seas fair through Thursday. Areas of dense fog are possible after midnight tonight, and then linger through the day tomorrow.

Long Term...Conditions remaining less than small craft. Fog possible over the waters.

GYX WATCHES/WARNINGS/ADVISORIES
ME...None.
NH...None.
MARINE...None.