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Marine Weather and Tides Belfast, ME Version 3.4

NOTICE 12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

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Sunrise 6:11AM

Sunset 7:05PM

Thursday April 2, 2020 3:47 PM EDT (19:47 UTC)

Moonrise 12:20PM

Moonset 3:13AM

Illumination 73%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Belfast city, ME

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Area Discussion for - Gray/Portland, ME

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FXUS61 KGYX 021316 CCA AFDGYX

Area Forecast Discussion . CORRECTED National Weather Service Gray ME 916 AM EDT Thu Apr 2 2020

SYNOPSIS. A strengthening storm over the Atlantic will meander over the Gulf of Maine through tonight, slinging moisture into our area with periods of rain over most of New England with cool and humid conditions. Rain gradually tapers down Friday with high pressure building in from the west bringing a dry weekend.

NEAR TERM /UNTIL 7 PM THIS EVENING/.

916 AM . at 13z a 975 millibar low was centered well offshore to the east of Cape Cod. This vertically stacked system will meander back to the west today. A series of impulses pivoting around this feature will produce several periods of precipitation. This should fall as rain . with wet snow and possibly some sleet for the higher terrain of northern New Hampshire as well as the western Maine mountains. The gusty northerly flow combined with precipitation and high temperatures in the upper 30s to mid 40s with make for a raw day.

Prev Disc . 740 AM Update . Minor temperature and weather update this morning to account for latest observational trends. Looking to radar, an area of steady rainfall is presently moving east to west across Maine toward the western Maine Mountains. Further north, snow is being observed as ASOS temperatures hover around freezing with 0.5" observed thus far up at Pittsburg in Coos County NH.

Previously . A strengthening storm just outside the Gulf of Maine drives sensible weather conditions today; in short, expect a cool, humid, and rainy Thursday. The low, positioned roughly south of Halifax and east of Cape Cod, will continue to pump in a deeply moist, maritime airmass as an inverted trough forces rounds of rain on shore, focusing this afternoon through the evening. PWAT steadily increases to around 1" along the coast by the afternoon with increasing precipitation intensity heading into the evening as the system retrogrades back toward our area.

The bulk of precipitation falls by midnight over our area with precipitation amounts mainly dependent on terrain. 1-1.5" of rainfall potential exists over the coastal plain extending into the east- and southeast-facing upslopes of the Whites and western Maine Mountains. Further west over the Connecticut River valley, amounts are limited to 0.25-0.5". In spite of strong low-level flow, on the order of 40-50 kts at h925 near the coast, temperature profiles and SSTs don't support mixing gusts to the surface much better than 20 kts, to around 30 kts along the coast. Best odds of stronger gusts will come in rounds of heavier rainfall with some momentum transport, possibly into the 30-35 kt range.

SHORT TERM /7 PM THIS EVENING THROUGH 6 PM FRIDAY/. By tonight, the oceanic low loops back around to the east and begins to pull away to the east. This, combined with dry air intrusion aloft from the north, lends to an overall weakening trend in precipitation with a gradual N to S drying trend through the day. Better mixing is realized behind the departing wave, so am expecting somewhat stronger winds tonight into tomorrow with maximum gusts over land in the 25-35 kt range, with strongest winds tending to occur along the coast and into central Maine where dry advection is strongest.

Although clouds will scour out over the mid- and upper-levels, low- level clouds will be stubborn to erode over the coastal plain with a very moist airmass beneath weak subsidence. HREF probabilities support this - so do expect afternoon high temperatures to be limited to the 40s, warming to near 50 in the Connecticut River Valley where clouds are more likely to scour out.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/. Low pressure pulls further offshore and upper level ridging arrives from the west. This will bring high pressure and dry conditions for the weekend. With less clouds around temperatures will climb back up to near or perhaps above normal levels. A cold front being driven by a shortwave trough passing through Canada will move through the region Sunday night. Some showers are possible as it moves through, but the bulk of the energy with this passes by to our north. Therefore do not expect widespread or significant precipitation. High pressure behind it keeps things dry until midweek. Not a lot of agreement amongst the global models on the upper level pattern let alone the surface features by the middle of next week. About the only thing that is agreed upon is that there will be an increasing chance of unsettled weather.

AVIATION /13Z THURSDAY THROUGH MONDAY/. Short Term . Clouds continue to thicken and lower, generally from NE to SW, this morning with MVFR to locally IFR conditions. Rounds of rain through today will bring periods of IFR with heavy rain over Maine and coastal terminals possible. Northerly winds 10- 15 kts gusting 15-25 kts (highest at the coast) strengthen a little overnight out of the northeast. Rain gradually comes to an end late tonight and tomorrow, although low ceilings may persist south and east of the mountains.

Long Term . High pressure building in through the weekend should allow conditions to improve to VFR with light winds as well. A cold front moving through Sunday night could bring some brief MVFR conditions mainly in the north.

MARINE. Short Term . An oceanic low south of Nova Scotia will retrograde back toward the Gulf of Maine, strengthening seas and winds today into tonight. Have posted Gale Warnings over the waters and Penobscot Bay with SCAs expected over Casco Bay. Expect seas to build to 10-15 ft over the waters by Friday with accompanying 10 ft swells.

Long Term . As the Atlantic low moves away, winds will be on the decrease Friday night and will likely be below 25 KT by Saturday morning. However, it will take seas a bit longer to settle down with 5 FT or higher seas lasting through Sunday.

TIDES/COASTAL FLOODING. Astronomical tides will trend up until reaching their monthly peak next week. Meanwhile, a storm south of Nova Scotia and east of Cape Cod will strengthen and retrograde back toward the Gulf of Maine today before pulling out tomorrow. The storm's prolonged offshore residence and brief westward movement leads to a good period of easterly fetch producing 10+ ft swells, 10-15 ft waves, and surge exceeding 2 ft tonight. Coastal flooding is possible with the Friday morning tide cycle with threat maximized south of Portland where the east-facing shoreline is most exposed. Some model guidance is showing surge approaching 3 ft along the Seacoast and I could see the possibility of an upgrade to coastal flood warnings there. Water levels approaching flood stage around Portland combined with wave action will lead to splash- over . erosion . and pockets of minor flooding and an advisory has been issued. Farther north water levels and large waves will likely necessitate a coastal flood statement for splash-over in areas.

EQUIPMENT. The last GYX upper air observation was March 25 at 12Z. Unfortunately, a disruption in gas supply has temporarily halted observations from GYX. It's unknown when supplies will be restored and upper air observations resumed.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Coastal Flood Advisory from 5 AM to 9 AM EDT Friday for MEZ023- 024. NH . Coastal Flood Advisory from 5 AM to 9 AM EDT Friday for NHZ014. MARINE . Small Craft Advisory from 2 PM this afternoon to 2 AM EDT Saturday for ANZ153. Gale Warning from 2 PM this afternoon to 8 PM EDT Friday for ANZ150-152-154. Gale Warning from 8 PM this evening to 8 PM EDT Friday for ANZ151.



NEAR TERM . ES TIDES/COASTAL FLOODING . Legro

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
ATGM1 - 8413320 - Bar Harbor, ME	43 mi	300 min	N 6 G 11	41°F	39°F		998.4 hPa

Wind History for Bar Harbor, ME

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NE8 G11

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N9 G12

NE6 G11

N4 G9

NE3 G8

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Rockland, Knox County Regional Airport, ME	24 mi	52 min	NNE 12 G 23	6.00 mi	Rain Fog/Mist	45°F	42°F	90%	996 hPa

Link to 5 minute data for KRKD

Wind History from RKD (wind in knots)

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NE7 G14

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Tide / Current Tables for Belfast, Penobscot Bay, Maine

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Tide / Current Tables for Fort Point, Penobscot River, Maine

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Weather Map

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GEOS Local Image of Northeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Gray/Portland, ME (15,3,4,5)

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Ground Weather Radar Station Portland, ME

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