Friday, November22, 2019 L-36.com


Marine Weather and Tides
South Portland, ME

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:42AMSunset 4:12PM Friday November 22, 2019 3:41 PM EST (20:41 UTC) Moonrise 2:35AMMoonset 3:20PM Illumination 19% Phase: Waning Crescent; Moon at 25 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- 330 Pm Est Fri Nov 22 2019
.gale warning in effect through late tonight...
Today..W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of rain.
Tonight..W winds 15 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Sat..W winds 10 to 15 kt with gusts up to 25 kt. Seas 1 to 2 ft.
Sat night..SW winds 5 to 10 kt. Seas 1 foot or less.
Sun..NW winds up to 10 kt, becoming ne with gusts up to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the morning, then rain likely in the afternoon with vsby 1 to 3 nm.
Sun night..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Rain likely in the evening, then a chance of showers after midnight. Vsby 1 to 3 nm.
Mon..W winds 5 to 10 kt. Seas 2 to 3 ft.
Mon night..W winds around 5 kt. Seas 1 foot or less.
Tue..SW winds 5 to 10 kt. Seas 1 to 2 ft.
Tue night..SW winds 5 to 10 kt. Seas around 2 ft.
ANZ100 330 Pm Est Fri Nov 22 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A strong cold front crosses the region this afternoon with gusty west winds to gale force in its wake. High pressure then moves over the waters on Saturday. Low pressure moves into the gulf of maine Sunday, followed by high pressure early next week. &&


7 Day Forecast for Marine Location Near South Portland, ME
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location: 43.65, -70.3     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 221410 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 910 AM EST Fri Nov 22 2019

SYNOPSIS. A warm front will continue to lift through the area this morning, however warmer weather will be short lived. After temperatures climb into the 40s and even 50s for some locations a strong cold front will cross the region this evening. Temperatures will tumble back down into the teens and 20s with plenty of snow showers in the mountains. Also expect some gusty winds overnight, at times reaching 35 mph. After a quieter day Saturday, low pressure may affect the region on Sunday. This may bring a mix, snow, and rain before high pressure moves in early next week.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 915 AM Update . Light showers continue to decrease this morning, corresponding with temperatures rising above freezing, so expired the WSW for patchy freezing rain on time this morning. Only minor ESTF tweaks to temperatures according to observed trends so far, and tightened up PoPs a bit with new hires model guidance available. Precipitation coverage has steadily increased along and behind the cold front to the west over New York as a trough aloft swings east into the lower Great Lakes region.

Update . The bulk of the WAA rain is moving E of the area at this hour. Scattered showers remain behind the initial wave of forcing . so I will continue the winter wx advisory for the time being.

Surface warm front continues to slowly lift N . with temps climbing well into the 30s and 40s at RKD . PSM . ASH . MHT . AFN . and up the CT River Valley to LEB. This will be the trend thru the morning. However a narrow area of clear skies behind the initial WAA wing has allowed temps to briefly dip back down towards freezing just inland from the coast. This is allowing some of the puddles leftover from early morning rain to refreeze. I have issued a SPS for black ice to cover this area where refreezing is most likely.

Previous discussion . This morning we continue to see some light WAA precip lift across the forecast area. By 7 am I expect much of this to be E of the area . as forcing is best in that area and we see some drying overhead. Until then temps continue to be near freezing . so some of this will fall as freezing rain The winter wx advisories continue thru morning. as well as an SPS to the S of that where temps are more marginal but some slick spots are still possible. See no reason why these products cannot expire on time or be cancelled with the next update. In fact the surface warm front is beginning to edge into the area now with AFN jumping to 39 degrees at the hour of this writing.

That surface warm front will continue to lift N ahead of approaching cold front. I expect that temps should surge just ahead of the front . and many locations will make a run well into the 40s and even low 50s. However the favored cold air damming zone from 1P1 thru IZG and into the ME foothills will likely not benefit from any surge . but rather begin falling quickly after a brief mix out along the front.

Along the front I have pretty low confidence in coverage of precip . at least until it reaches the far Ern zones and over the water. Otherwise I have low chance or slight chance PoP for some stray showers. Upslope snow showers will be the most likely form of precip . but those will wait until post-frontal passage. Could see a couple inches of snow at the higher elevations of Nrn NH and Wrn ME in this activity.

Will also see strong CAA and increasing mixing depths behind the front. This will tap Wly winds around 40 kt at the top of the mixed layer. Taking about 80 percent of that for gusts gives pretty widespread 30 to 35 kt gusts . so gusty but solidly sub- advisory.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/. For a few hours in the evening I expect we will still see some wind gusts around 35 to as high as 40 mph at times. These gusts will gradually diminish thru the night as the CAA and pressure gradient weakens. Given the mixed boundary layer overnight I went close to straight mixed down temps and raw 2 m guidance for low temps. This brings the area down into the 20s with teens in the far Nrn zones. Will also see lingering upslope snow showers in the mtns. Could see an additional couple of inches in the highest terrain before upslope precip shuts off.

High pressure briefly moves in Sat and we will see clearing but cool conditions . with afternoon readings in the 30s.

LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/. The ensemble and deterministic model solutions are in decent agreement on the long wave pattern through early next week. With the mean upper trough position to our west . cold air will be limited and temperatures should average near normal or slightly above normal for the period. We begin the period with shortwave ridging Saturday night ahead of a vigorous shortwave impulse over the Mississippi Valley. A clear start to the night should allow temperatures to drop well below freezing . especially away from the immediate coast By Sunday morning. clouds will have overspread much of the forecast area with light precipitation arriving over southern and coastal sections by early afternoon as the impulse goes negative tilt and the coastal low tracks into southeast New England. The surface low tracks more east then north across the Gulf of Maine Sunday afternoon before exiting into the Canadian maritimes Sunday night With this track. much of the available model suite keeps southern and coastal sections on the western periphery of the precipitation shield with areas near the international border seeing little if any QPF. Given thermal profiles best chance for frozen is reserved for mountains and foothills with predominantly rain along the coast In between. we're more likely to see a light wintry mix. Behind this system for Sunday night we're likely to see some upslope snow showers across the higher terrain before a ridge of high pressure arrives for Monday. Low pressure passing to our west Monday night and Tuesday will spread some warm air advection clouds into the area. A second and more significant low will track from the Mississippi valley through the lower Great Lakes Tuesday night and Wednesday before exiting into the maritimes by Thanksgiving Day.

AVIATION /14Z FRIDAY THROUGH TUESDAY/. Short Term . Despite warm front lifting thru the area this morning conditions remain widespread VFR. Local MVFR conditions are occurring in areas of SHRA or FZRA. These will move thru the area over the next couple of hours leaving VFR behind them. A strong cold front will cross the area this afternoon . but with little in the way of precip. I am not confident enough to but any SHRA/SHSN in the TAFs at this time. Main impact will be gusty Wly winds . with surface gusts to 25 or 30 kt. Gusts gradually diminish overnight. Widespread VFR conditions Sat.

Long Term .

Sun . Areas of MVFR in -RA/-SN.

MARINE. Short Term . Gale warnings continue for strong Wly wind gusts behind cold front late this afternoon into early evening. Gale force gusts diminish in the bays overnight and on the outer waters by Sat morning. SCA conditions continue into Sat afternoon before diminishing under high pressure.

Long Term .

Sun PM - Mon . SCA's likely . with Gales psb outside the bays.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Gale Warning from 5 PM this afternoon to 5 AM EST Saturday for ANZ150>154.

SYNOPSIS . NEAR TERM . Casey SHORT TERM . LONG TERM . AVIATION . MARINE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44007 - PORTLAND 12 NM Southeast of Portland,ME 12 mi52 min WSW 19 G 23 46°F 49°F4 ft998.5 hPa (-2.2)42°F
WEXM1 - Wells Reserve, ME 25 mi42 min SW 6 44°F 42°F
WELM1 - 8419317 - Wells, ME 27 mi54 min WSW 6 G 8 45°F 44°F999.6 hPa
44030 - Buoy B0102 - Western Maine Shelf 33 mi98 min W 14 G 16 47°F 4 ft999.8 hPa
CMLN3 45 mi158 min 11 45°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Jetport, ME1 mi51 minWSW 42.00 miFog/Mist44°F41°F89%999 hPa

Link to 5 minute data for KPWM

Wind History from PWM (wind in knots)
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Last 24hrNW4CalmSE3CalmCalmCalmCalmW3CalmCalmE3CalmCalmCalmSW4SW6SW3SW7SW6SW8SW6SW6SW10SW4
1 day agoN8N6N5N6NW6N5NW6NW6N6N6NW4NW3N4NW6NW6NW3NW6NW9NW11NW9NW8
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2 days agoN3CalmCalmN4N4N4CalmN4N3CalmN5N5NE6N7N8N9N6N10N6N9N8N8N10N10

Tide / Current Tables for Fore River, Maine
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Fore River
Click for Map
Fri -- 12:28 AM EST     -0.09 feet Low Tide
Fri -- 01:35 AM EST     Moonrise
Fri -- 06:43 AM EST     Sunrise
Fri -- 06:51 AM EST     9.73 feet High Tide
Fri -- 01:02 PM EST     0.18 feet Low Tide
Fri -- 02:20 PM EST     Moonset
Fri -- 04:10 PM EST     Sunset
Fri -- 07:15 PM EST     9.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.11.23.25.77.99.39.797.34.92.50.80.20.72.34.77.18.99.79.48.15.83.2

Tide / Current Tables for Cow Island, Maine
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Cow Island
Click for Map
Fri -- 12:26 AM EST     -0.09 feet Low Tide
Fri -- 01:34 AM EST     Moonrise
Fri -- 06:43 AM EST     Sunrise
Fri -- 06:48 AM EST     9.73 feet High Tide
Fri -- 01:00 PM EST     0.18 feet Low Tide
Fri -- 02:19 PM EST     Moonset
Fri -- 04:09 PM EST     Sunset
Fri -- 07:12 PM EST     9.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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00.11.33.35.889.49.797.24.82.40.80.20.82.44.87.299.79.485.73.1

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.
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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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