Monday, August10, 2020
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Marine Weather and Tides
Kennebunkport, 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 5:40AMSunset 7:53PM Monday August 10, 2020 12:18 PM EDT (16:18 UTC) Moonrise 11:21PMMoonset 12:27PM Illumination 58% Phase: Waning Gibbous; Moon at 21 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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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 1128 Am Edt Mon Aug 10 2020
Rest of today..S winds 5 to 10 kt. Seas around 2 ft. A slight chance of showers with isolated tstms late.
Tonight..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Tue..S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft.
Tue night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers and tstms in the afternoon.
Wed night..SW winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Seas 2 to 4 ft. A chance of tstms in the evening. A chance of showers.
Thu..N winds around 5 kt, becoming se in the afternoon. Seas around 2 ft.
Thu night..SW winds around 5 kt, becoming nw around 5 kt after midnight. Seas around 2 ft.
Fri..NE winds 5 to 10 kt, becoming E in the afternoon. Seas around 2 ft.
Fri night..SE winds around 5 kt, becoming ne after midnight. Seas around 2 ft. Winds and seas higher in and near tstms.
ANZ100 1128 Am Edt Mon Aug 10 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. A weak low pressure trough will remain over the coastal plain of maine into midweek allowing for a southwesterly flow to continue on the waters. There is the possibility of patchy fog during this period. A cold front drops southward across the waters Thursday night and Friday morning as high pressure builds in from the north. &&


7 Day Forecast for Marine Location Near Kennebunkport, ME
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location: 43.37, -70.43     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 101525 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 1125 AM EDT Mon Aug 10 2020

SYNOPSIS. Warmer and increasingly humid air will spread across the area through the first half of this work week with dangerous heat indices possible at some locations. Along with the building humidity will come the chance of a few showers and thunderstorms from time to time. A cold front will cross the area late Wednesday night and early Thursday . with a bit less heat and humidity to follow for Friday and the start of next weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 1125am Update . Another update to temperatures to match the latest observations and adjust max temperatures a bit. The rest of the forecast continues to be on track.

940am Update . Made some minor adjustments to PoPs and weather grids through the early afternoon. Also matched temperatures to the latest observations; still expecting maximum heat indices around 95 degrees this afternoon as temperatures rise into the lower to mid 90s. The rest of the going forecast looks to be on track.

Update . Have updated the forecast based on latest mesoscale models and current conditions. Widely scattered to scattered showers will continue today as a weak disturbance gradually exits the region. Have made minor adjustments to pops based on latest radar imagery with the precipitation crossing through central areas. Minor adjustments made to winds based on latest satellite imagery as well as temperatures and dew points.

Prev Disc . The heat and humidity begins to build today in response to a large east coast ridge and a southwesterly flow through a deep layer. H8 temperatures reach about +17C over some areas by later today. This is a borderline heat advisory criteria for portions of southern New Hampshire. However, some cloudiness from an exiting short wave and from upstream convection may bring clouds into the region from time to time today. This may limit high temperatures from the mid 80s to around 90 over southern areas. Nevertheless, this is still hot and humid with heat indices approaching 95 degrees this afternoon.

There will be isolated to scattered shower activity today. This will be mainly away from the coast where an onshore breeze will keep temperatures slightly cooler than the interior providing a more stable atmospheric profile.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM TUESDAY/. Any showers will weaken and dissipate this evening across the region. Patchy fog will develop once again across the interior valleys.

The hottest day of the week will likely be on Tuesday as H8 readings exceed +18C. Heat indices may exceed 100 degrees at this time over interior southwest Maine and southern New Hampshire. Heat indices in the 90s will occur in all areas but the mountains. The coolest locations will be in the Midcoast region where an onshore flow off the Gulf of Maine will knock down temperatures to the lower to mid 80s.

There will once again be isolated to scattered showers and thunderstorms, but forcing will be weak during the day.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/. A shortwave trough lifting through far northern Quebec on Tuesday will send a cold front toward our area. It stalls a bit as it arrives Tuesday night into Wednesday, possibly serving as a focusing mechanism for showers and thunderstorms especially Wednesday afternoon. The heat continues, but with a bit cooler temperatures and heat index values topping out at around 95 degrees in the afternoon. The next trough dropping southeast out of Hudson Bay will give the front another shove further southward at least into southern New England for Thursday. This will bring rain chances to an end as well as some more seasonable temperatures.

Low pressure forms near the Mid Atlantic coast this weekend, likely along that slow moving frontal boundary. With little steering flow it's unclear where it will eventually track. The GFS is the only model at this point that drifts this far enough north to bring rain to our area this weekend, while the others drift it primarily to the east into the Atlantic. The next upper trough arrives from the west early next week.

AVIATION /16Z MONDAY THROUGH FRIDAY/. Short Term . Mainly VFR conditions today, however isolated thunderstorms may produce brief periods of IFR conditions, mainly in the north. VFR tonight, but areas of valley fog will reduce ceilings and visibilities during the late night period. VFR on Tuesday, lowering to IFR conditions in scattered showers and storms.

Long Term . A slow moving front will bring a chance of showers and thunderstorms especially Wednesday afternoon. Otherwise VFR conditions should prevail.

MARINE. Short Term . Winds and seas will remain below SCA thresholds for the near/short term portion of the forecast. Patchy fog is possible tonight over portions of the waters.

Long Term . Light winds expected over the waters as a slow moving cold front eventually crosses from the north by Thursday.

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

NEAR TERM . Watson SHORT TERM . Cannon LONG TERM . Kimble


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WEXM1 - Wells Reserve, ME 7 mi79 min WSW 2.9 85°F 70°F
WELM1 - 8419317 - Wells, ME 8 mi49 min SSE 7 G 8 78°F 67°F1015.2 hPa
44030 - Buoy B0102 - Western Maine Shelf 13 mi75 min S 5.8 G 7.8 2 ft
44007 - PORTLAND 12 NM Southeast of Portland,ME 19 mi89 min S 3.9 G 3.9 67°F 65°F2 ft1015.4 hPa (+0.0)
CASM1 - 8418150 - Portland, ME 22 mi49 min 74°F 67°F
44073 25 mi75 min S 5.8 G 5.8 70°F 64°F
BGXN3 - Great Bay Reserve, NH 30 mi94 min WNW 1.9 87°F 1016 hPa72°F
IOSN3 - Isle of Shoals, NH 30 mi79 min SW 5.1 G 5.1 78°F 1015 hPa (-0.5)70°F
44098 - Jeffrey's Ledge, NH (160) 42 mi74 min 65°F2 ft

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sanford, Sanford Regional Airport, ME14 mi23 minSW 710.00 miMostly Cloudy85°F66°F55%1015.4 hPa
Portland, Portland International Jetport, ME21 mi28 minE 610.00 miPartly Cloudy85°F66°F55%1015 hPa

Link to 5 minute data for KSFM

Wind History from SFM (wind in knots)
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Last 24hrSW5SW1034W6S7S5S3NW7CalmS5CalmSW3S5CalmCalmCalmCalmCalmSW4SW4W8SW7SW7
1 day agoSW7SW6CalmCalm5SE6S3S3CalmCalmSW7SW5SW4CalmCalmCalmCalmCalmCalmSW3SW3W7W8SW9
2 days agoSE8E8SE8SE7SE63E5SE3CalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalmS3W6SW4S5

Tide / Current Tables for Cape Porpoise, Maine
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Cape Porpoise
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Mon -- 04:26 AM EDT     8.16 feet High Tide
Mon -- 05:41 AM EDT     Sunrise
Mon -- 10:35 AM EDT     1.20 feet Low Tide
Mon -- 12:27 PM EDT     Moonset
Mon -- 04:50 PM EDT     8.32 feet High Tide
Mon -- 07:51 PM EDT     Sunset
Mon -- 11:06 PM EDT     1.37 feet Low Tide
Mon -- 11:20 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.43.95.87.38.187.25.73.92.31.41.323.45.26.988.37.86.64.93.11.81.4

Tide / Current Tables for Wood Island Harbor, Maine
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Wood Island Harbor
Click for Map
Mon -- 04:16 AM EDT     8.24 feet High Tide
Mon -- 05:41 AM EDT     Sunrise
Mon -- 10:17 AM EDT     1.22 feet Low Tide
Mon -- 12:27 PM EDT     Moonset
Mon -- 04:40 PM EDT     8.40 feet High Tide
Mon -- 07:51 PM EDT     Sunset
Mon -- 10:48 PM EDT     1.38 feet Low Tide
Mon -- 11:20 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.84.46.27.68.2875.43.521.31.42.33.95.77.38.28.47.76.34.52.71.61.4

Weather Map
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wmap_A
GEOS Local Image of    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 (12,3,4,5)
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Ground Weather Radar Station Portland, ME
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.