Thursday, July9, 2020
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Marine Weather and Tides
Falmouth, 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.

Sunrise 5:07AMSunset 8:25PM Thursday July 9, 2020 3:38 AM EDT (07:38 UTC) Moonrise 11:26PMMoonset 9:34AM Illumination 85% Phase: Waning Gibbous; Moon at 19 days in cycle
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.
Marine Forecasts
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ANZ153 Casco Bay- 254 Am Edt Thu Jul 9 2020
Today..NE winds around 5 kt, becoming se around 5 kt this afternoon. Seas 1 to 2 ft. Areas of dense fog this morning. Vsby variable to less than one quarter nm this morning.
Tonight..SE winds around 5 kt. Seas 1 to 2 ft. Areas of fog after midnight with vsby 1 to 3 nm.
Fri..SE winds around 5 kt. Seas 1 to 2 ft in the morning, then 1 foot or less. Areas of fog in the morning with vsby 1 to 3 nm.
Fri night..SE winds 5 to 10 kt. Seas 1 to 2 ft, building to 2 to 3 ft after midnight. Scattered showers in the evening, then showers after midnight.
Sat..SE winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. Numerous showers, mainly in the morning.
Sat night..S winds 5 to 10 kt. Seas 2 to 4 ft. Scattered showers. Vsby 1 to 3 nm.
Sun..S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Scattered showers with a chance of tstms.
Sun night..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Mon..S winds 5 to 10 kt. Seas 2 to 3 ft. Scattered showers.
Mon night..S winds around 5 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms.
ANZ100 254 Am Edt Thu Jul 9 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Areas of dense fog are expected for portions of the waters for much of the morning. Additional shower and Thunderstorm activity is possible over the waters this and Friday afternoons. A coastal system will approach the region this weekend and bring a chance for seas above 5 ft for the outer waters and more showers and Thunderstorms. &&


7 Day Forecast for Marine Location Near Falmouth, ME
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location: 43.71, -70.23     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 090446 AAC AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 1246 AM EDT Thu Jul 9 2020

SYNOPSIS. A front will cross the region this evening bringing scattered thunderstorms with heavy rainfall, damaging winds and hail. High pressure builds in for the latter half of the week. Temperatures and humidity climb with heat index values exceeding 90 degrees across portions of the area through the end of the week. A low moves up the coast Friday, bringing widespread rain to the region Friday night into Saturday. Several troughs of low pressure will cross through the region early next week, bringing more scattered showers and thunderstorms to the region.

NEAR TERM /UNTIL 9 AM THIS MORNING/. 1245 AM Update . Minor changes to the forecast overnight to add areas of quarter mile fog. Fog will be dense at times, and will be considering a dense fog advisory, which would likely be between 4 and 7 or 8 am. Fog will then continue over Penobscot Bay and their outer waters for much of the day, but burn off elsewhere. Temperatures were adjusted for latest hourly trends and more consistency with gradual heating.

Previous Update . Have updated the forecast based on current conditions, radar imagery and latest set of mesoscale models. Busy convective day, however the precipitation continues to rapidly weaken this evening and move off the coast. Have dropped the Severe Thunderstorm and Flash Flood Watches for the remainder of the region.

In it's wake, plenty of low level moisture remains in places from todays rains. Therefore, expect fog to develop across the region through the late evening hours.

Have made minor adjustments to temperatures, winds, dew points and cloud cover based on current conditions across the region.

Prev Disc . 6pm update . Have ended the watch for the northern portion of the area as the line continues to progress through the region. Have also updated the PoP etc to reflect the current radar. While most of the flooding is outside the Flash flood watch will hold onto that watch for now as the main convective line has yet to reach that area.

Prev disc . Thunderstorms are continuing to increase in coverage ahead of a cold front now at the Canadian border. Storms are entering a favorable environment with KGYX 17Z sounding showing a region of elevated steep lapse rates. With low level directional wind shear this is enough to help support all severe modes with heavy rain and large hail already reported. As the front moves through the region expect a more linear storm mode to evolve and sweep through the region with damaging winds also a threat. A Severe Thunderstorm watch remains in effect for the entire region.

Flash flooding is also a concern as the warm cloud depth and intense rainfall rates mean any regions that get multiple rounds of convection will be subject to flooding. The urban areas remain of particular concern as the flash flood guidance is lowest there. Will not expand the flash flood watch beyond the urban focus from this morning, but the threat for isolated flooding extends across the entire region, especially along the line of convection moving out of Quebec.

SHORT TERM /9 AM THIS MORNING THROUGH 6 PM FRIDAY/. Overnight in the wake of the front expect fairly widespread dense fog to develop especially in areas that have received the most rain. Dense fog advisory may be needed but with all the other headlines right now will let the overnight shift hoist that as necessary.

Thursday will again be hot and humid as high pressure begins to build into the area. Temperatures continue to trend upwards and highs into the 90s will bring the heat index into the mid to upper 90s across the Merrimack Valley, and a heat advisory remains in effect for the southern portion of NH. With just hot and muggy conditions a few popup thunderstorms are possible due to the increasing instability.

LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/. The very warm and humid conditions will continue for the later part of the work week. Sunshine and H8 temperatures around +16C will yield afternoon temperatures in the 80s. Surface dew points will remain near 70 degrees in some locations. Apparent temperatures will continue to run high on Friday with mid 80s to lower 90s across most interior locations.

There continues to be some run to run inconsistencies in regards to the track with the upcoming low pressure system exiting out of the Mid Atlantic region Friday night. The 12Z model suite indicates deep, tropical moisture enters the region Friday night as the tropical low moves north along the New Jersey coastline. Showers will overspread the region located in a deformation zone north of the approaching system.

System then crosses through central New England on Saturday as the potential track appears to be moving to our west. Heavy, soaking rains are possible during the day with plenty of moisture within the 2+ inches precipitable water values. Western areas may receive the highest rainfall totals, however there is quite a bit of uncertainty with this. Highest totals may actually shift into western New England and eastern New York.

Dry slot enters the region Saturday night into Sunday. This will allow for the axis of very high moisture levels to shift east of our region. Thereafter, an upper level trough will be persistent to our west during the first portion of next week. Diurnally driven instability will allow for scattered showers and thunderstorms during the afternoon and early evening hours.

AVIATION /06Z THURSDAY THROUGH MONDAY/. Short Term . Line of severe thunderstorms will cross the region with dense fog moving in behind the line resulting in widespread LIFR later tonight.

Long Term . Precipitation will allow for ceilings and visibilities to lower Friday night as low pressure moves north from the Mid Atlantic coastline. IFR and LIFR conditions expected Friday night into Saturday. Conditions improve Sunday and into early next week. However, expected scattered showers with brief periods of LIFR conditions in any storms. These thunderstorms will mainly be during the mid afternoon to early evening hours.

MARINE. Short Term . Areas of fog developing over the waters tonight. Showers and isolated thunderstorms continue to exit off the coast.

Long Term . Low pressure reaches the southern New England coastline by late Friday night. This will allow for seas to begin building along the coastal waters into the 4 to 7 foot range along the outer waters which will last through the weekend. South to southwest winds will dominate into next week.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . Heat Advisory from noon today to 7 PM EDT this evening for NHZ008-012-013-015. MARINE . None.



NEAR TERM . Hanes


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CASM1 - 8418150 - Portland, ME 4 mi51 min 64°F 62°F
WEXM1 - Wells Reserve, ME 31 mi99 min NNE 1.9 64°F 64°F
WELM1 - 8419317 - Wells, ME 32 mi51 min N 1.9 G 2.9 64°F 62°F1014.2 hPa
44030 - Buoy B0102 - Western Maine Shelf 38 mi95 min NW 1.9 G 3.9 3 ft1019.4 hPa
44032 - Buoy E0104 - Central Maine Shelf 46 mi95 min WSW 3.9 G 5.8 60°F 57°F3 ft1012.4 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME6 mi48 minN 010.00 miOvercast68°F64°F87%1014.2 hPa
Auburn-Lewiston, ME24 mi43 minN 00.25 miFog60°F60°F100%1015.1 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hrS3S6S6S8S8S3S6S5SE7SE8
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1 day agoCalmCalmCalmSW5S7S6SE7S11S8S9S9
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2 days agoCalmN3N3N3NE5NE6E5E5E6E8SE9SE7S9S8S8S6S5SE3SW3CalmCalmCalmCalmCalm

Tide / Current Tables for Presumpscot River Bridge, Maine
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Presumpscot River Bridge
Click for Map
Thu -- 02:34 AM EDT     10.09 feet High Tide
Thu -- 05:08 AM EDT     Sunrise
Thu -- 09:02 AM EDT     0.03 feet Low Tide
Thu -- 09:34 AM EDT     Moonset
Thu -- 03:15 PM EDT     9.07 feet High Tide
Thu -- 08:23 PM EDT     Sunset
Thu -- 09:13 PM EDT     1.22 feet Low Tide
Thu -- 11:26 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.88.89.910974.52.20.600.62.14.46.68.398.87.65.63.521.21.52.8

Tide / Current Tables for Cliff Island, Luckse Sound, Maine
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Cliff Island
Click for Map
Thu -- 02:31 AM EDT     9.99 feet High Tide
Thu -- 05:08 AM EDT     Sunrise
Thu -- 08:56 AM EDT     0.03 feet Low Tide
Thu -- 09:33 AM EDT     Moonset
Thu -- 03:12 PM EDT     8.98 feet High Tide
Thu -- 08:23 PM EDT     Sunset
Thu -- 09:07 PM EDT     1.15 feet Low Tide
Thu -- 11:25 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.88.89.89.98.86.84.320.500.62.34.56.78.398.77.45.43.31.81.21.52.9

Weather Map
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wmap_A
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
Wind Forecast for Gray/Portland, ME (3,6,7,8)
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Ground Weather Radar Station Portland, ME
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