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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 6:33AM | Sunset 5:25PM | Thursday February 21, 2019 5:55 PM EST (22:55 UTC) | Moonrise 9:06PM | Moonset 9:03AM | Illumination 94% |  |
ANZ153 Casco Bay- 235 Pm Est Thu Feb 21 2019
Tonight..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft, subsiding to 1 to 2 ft in the afternoon.
Fri night..N winds 5 to 10 kt. Seas 1 foot or less.
Sat..NW winds around 5 kt, becoming sw in the afternoon. Seas 1 foot or less.
Sat night..S winds 5 to 10 kt. Seas 1 foot or less. A chance of snow after midnight with vsby 1 to 3 nm.
Sun..SE winds 10 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft, building to 4 to 7 ft in the afternoon. Snow. Rain in the afternoon. Vsby 1 to 3 nm.
Sun night..S winds 10 to 15 kt with gusts up to 20 kt, becoming W 10 to 20 kt with gusts up to 30 kt after midnight. Seas 4 to 6 ft. A chance of snow showers. A chance of rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 nm.
Mon..W winds 20 to 30 kt with gusts up to 40 kt. Seas 3 to 5 ft.
Mon night..NW winds 15 to 25 kt with gusts up to 40 kt. Seas 2 to 4 ft.
Tue..NW winds 10 to 20 kt with gusts up to 25 kt. Seas 1 foot or less.
Tue night..NW winds 5 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. A chance of snow showers. Vsby 1 to 3 nm.
Tonight..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft, subsiding to 1 to 2 ft in the afternoon.
Fri night..N winds 5 to 10 kt. Seas 1 foot or less.
Sat..NW winds around 5 kt, becoming sw in the afternoon. Seas 1 foot or less.
Sat night..S winds 5 to 10 kt. Seas 1 foot or less. A chance of snow after midnight with vsby 1 to 3 nm.
Sun..SE winds 10 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft, building to 4 to 7 ft in the afternoon. Snow. Rain in the afternoon. Vsby 1 to 3 nm.
Sun night..S winds 10 to 15 kt with gusts up to 20 kt, becoming W 10 to 20 kt with gusts up to 30 kt after midnight. Seas 4 to 6 ft. A chance of snow showers. A chance of rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 nm.
Mon..W winds 20 to 30 kt with gusts up to 40 kt. Seas 3 to 5 ft.
Mon night..NW winds 15 to 25 kt with gusts up to 40 kt. Seas 2 to 4 ft.
Tue..NW winds 10 to 20 kt with gusts up to 25 kt. Seas 1 foot or less.
Tue night..NW winds 5 to 15 kt with gusts up to 20 kt. Seas 1 foot or less. A chance of snow showers. Vsby 1 to 3 nm.
ANZ100 235 Pm Est Thu Feb 21 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will build into the region to end the week with with quiet conditions through Saturday. A frontal system will cross the waters on Sunday with southeasterly winds strengthening during the day. As this system departs Sunday night...strong west and northwest winds will arrive and continue through Monday with gusts to gale force likely. &&
Synopsis for stonington me to merrimack river ma out to 25 nm.. High pressure will build into the region to end the week with with quiet conditions through Saturday. A frontal system will cross the waters on Sunday with southeasterly winds strengthening during the day. As this system departs Sunday night...strong west and northwest winds will arrive and continue through Monday with gusts to gale force likely. &&
7 Day Forecast for Marine Location Near North Woodstock, NH
Hourly EDIT Helplocation: 43.93, -71.58 debug
Area Discussion for - Gray/Portland, ME
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kgyx 211927 afdgyx area forecast discussion national weather service gray me 227 pm est Thu feb 21 2019 Synopsis High pressure will gradually build in from the west tonight through Friday night. High pressure will crest over the region on Saturday before shifting offshore. A warm front will approach from the southwest Saturday night and will lift into the region on Sunday... Quickly followed by a cold front. A secondary cold front will drop south through the region late Sunday night and Monday. A strong northwest flow will set up across the region Monday afternoon and will persist through Monday night and into Tuesday. Winds will subside Tuesday afternoon as high pressure builds in from the west. Low pressure will passes south of the region Wednesday and Wednesday night. Near term through tonight Fair amount of cloudiness lingering behind departing low pressure this afternoon but increasing westerly winds beginning to clear southern new hampshire and the coastal plain. Expect clouds to gradually diminish this evening downwind of the mountains as high pressure builds in from the west. Clouds will likely persist through the night in the north along with scattered snow showers this evening. Lows overnight will range from the mid to upper teens in the north and lower to mid 20s in the south. Short term Friday through Friday night High pressure will continue to build in from the west Friday and Friday night. Lingering clouds in the mountains will gradually clear Friday morning and northwesterly winds will subside in the afternoon. Highs on Friday will range from the mid 20s to lower 30s north and mid 30s to lower 40s south. Friday night looking mostly clear and cold as high pressure crests over the region late. Lows will generally range through the teens to near 20 along the coast. Long term Saturday through Thursday High impact weather potential: * snow to potential mixed precipitation daybreak Sunday through Sunday evening. * advisory level winds possible late Sunday night into Monday. --pattern and implications-- a look at the mid and upper level flow pattern early this afternoon features a ridge off the west coast of north america with downstream long-wave trough centered over the western untied states. East of this feature is a confluent flow pattern..With an anomalous ridge over the southeastern united states and over the western atlantic +2-3 sigma at h5 with impulses riding north over this ridge having been responsible for our sensible weather recently. This overall configuration to the flow will continue through the coming weekend... With one final... Stronger impulse moving over the ridge... Helping to gradually suppress this feature... And introduce a broad area of lower than normal mid level heights across the northern united states in response to a weakening pacific influence epo shifting negative with a rex block developing over the eastern pacific. Overall... This pattern progression spells a seasonably mild start to the forecast period... With one significant weather system Sunday followed by a turn to a seasonably cold pattern which appears to lock into place for next week... In agreement with recent climate prediction center 6-10 and 8-14 day temperature outlooks. Greatest threat for impactful weather will be in the Sunday and Monday period. --daily details-- Saturday: high pressure in control with t9s in the negative single numbers suggesting highs at or a degree or two above seasonal norms in the 30s to around 40. Expect increasing upper and eventual mid level cloudiness in the afternoon and evening given the onset of top down saturation as upper level warm advection overspreads the region. This will continue into Saturday night with guidance consensus favoring precipitation arrival in the predawn hours Sunday over nh spreading east through western maine Sunday morning. Sunday: a very similar pattern to what has just occurred over the past 24 hours is expected on Sunday with a primary low moving through the great lakes... And a weakness secondary low potentially taking shape over southern new england and moving into the gulf of |
maine. Moisture anomalies in the warm advection regime ahead of this low are perhaps just a tad higher than last night S event with 2-3 sigma departures. The primary low certainly looks to be more intense... Sitting around 980 mb at 12z Sunday... With a well agreed upon position over northern lake michigan. Given the strength of this low... Expect the airmass to be just a bit warmer... Both at the surface and aloft... But the overall flavor of the outcome looks similar. Expect this to be a snow event in the mountains and foothills... That potentially ends with some drizzle or mix after the bulk of precipitation is over. Bigger question will be over southern nh and coastal me where precipitation will begin as snow before potentially transitioning to a mix rain before ending. Ptype will largely depend on the evolution of the secondary low... But given what we have seen multiple times this past winter... Will continue to keep temperatures lower than the guidance consensus closer to new 12z NAM . Current model QPF consensus would suggest near warning level amounts of snow are possible where precipitation remains snow... But models performed rather poorly with this past event... Overdoing QPF by nearly a factor of 2. There is time to let this part of the picture become clearer... But a plowable snow for most locations appears likely for the daytime Sunday. Sunday night - Monday: impressive cold advection regime takes over behind departing low Sunday night... Driving arctic air back into the region. For the daytime Monday... Isallobaric component aligns well with low level gradient and h9 winds reaching 40-50kts. An early look at model sounding profiles suggest over 50kts at the top of the mixed layer with solid advisory level gusts supported by both this and statistical guidance mex and experimental ecwmf MOS . The details on this can certainly change... But a headline-able wind event is a reasonable possibility particularly on Monday and have highlighted this in the hazardous weather outlook. Otherwise... temperatures won t move up very far... But actually won t be all that cold given am temps aloft supporting a rise into the upper 20s to mid 30s before temperatures fall to around zero north and 10-15 over southern nh and coastal me Monday night. Wind chills will fall to -10f north to +5 south given continued strong northwesterly winds. Tuesday through Thursday: the pattern across the northeast during the middle portion of next week will be characterized by fast flow aloft... And gradually lowering mid level heights. The rapidity of the flow suggests reduced confidence in timing particular features at this range... And that is borne out in the differences between the deterministic and ensemble guidance suite seen this afternoon. The airmass looks to be seasonably cold... And the dominance of the northern stream will preclude any high-impact precipitation makers. However... There is some agreement of a weak wave embedded in the fast flow during this period... Favoring some light snow or snow showers for a time in the wed-thu period. Aviation 19z Thursday through Tuesday Short term...VFR tonight will areas of MVFR ceilings in the mountains this evening.VFR Friday through Friday night. Long term...VFR Saturday and Saturday night with snow to mixed precipitation event on Sunday bringing a roughly 18 hour period of lifr ifr conditions. Beyond this... While mountains snow showers will continue into early next week likely impacting hie ...VFR conditions should dominate the other terminals for Monday and Tuesday. West northwesterly winds on Monday will be strong... With gusts of 40kts possible. Marine Short term... Continuing small craft advisories through tonight. Long term... High pressure over the waters on Saturday... With a frontal system passing through the waters on Sunday with reduced visibilities and southeasterly winds strengthening to at least sca levels... With low end gales possible. As this system pulls east on Sunday night into Monday... Gale force winds appear likely... With these winds continuing through Monday night before diminishing into Tuesday. There is some potential for gusts to reach near storm force late Monday. Gyx watches warnings advisories Me... None. Nh... None. Marine... Small craft advisory until 7 am est Friday for anz150-152-154. Sinsabaugh arnott |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| WEXM1 - Wells Reserve, ME | 68 mi | 55 min | W 4.1 | 42°F | 30°F | |||
| WELM1 - 8419317 - Wells, ME | 68 mi | 55 min | WNW 7 G 14 | 43°F | 35°F | 1010.1 hPa (+1.5) | ||
| BGXN3 - Great Bay Reserve, NH | 72 mi | 70 min | W 8.9 | 40°F | 1011 hPa | 29°F |
Wind History for Wells, ME
(wind in knots) EDIT (on/off) Help| 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | |
| Last 24hr | SW | SW | SW | SW | SW | SW | W | W | NW | N G8 | N | N | N | N | N G11 | NW G10 | NW | NW | W G8 | W G10 | W G9 | W G12 | NW G14 | NW G14 |
| 1 day ago | W G16 | NW G17 | NW G20 | W G10 | W G12 | W G9 | NW G11 | W G8 | NW G9 | W | N | NW | W | NW | NW | W | N | E | S | S G9 | S | W G8 | W G5 | SW |
| 2 days ago | NW | NW | NW G10 | NW G12 | NW G17 | NW G14 | W G7 | NW | NW G5 | NW G10 | NW G7 | N | NW G5 | N | N G11 | NW | NW G11 | NW G10 | W G15 | W G21 | NW G20 | NW G18 | NW G12 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Plymouth Municipal Airport, NH | 14 mi | 60 min | WNW 4 | 10.00 mi | Overcast | 37°F | 30°F | 76% | 1009.8 hPa |
Wind History from 1P1 (wind in knots)
| 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | |
| Last 24hr | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | NW | NW | W | W | NW | W |
| 1 day ago | Calm | W | NW | Calm | Calm | W | W | W | W | Calm | Calm | Calm | Calm | Calm | Calm | Calm | W | W | Calm | Calm | Calm | Calm | Calm | Calm |
| 2 days ago | W G16 | NW | NW | NW G14 | NW | W | Calm | Calm | W | W | Calm | Calm | Calm | W | W G17 | W G18 | W G17 | W G19 | NW G15 | W G19 | W G22 | W G23 | NW G16 | NW G17 |
Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataSalmon Falls River entrance
Click for Map
Thu -- 01:27 AM EST 8.05 feet High Tide
Thu -- 06:32 AM EST Sunrise
Thu -- 07:47 AM EST -1.10 feet Low Tide
Thu -- 07:59 AM EST Moonset
Thu -- 01:46 PM EST 8.65 feet High Tide
Thu -- 05:21 PM EST Sunset
Thu -- 08:02 PM EST Moonrise
Thu -- 08:20 PM EST -1.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 01:27 AM EST 8.05 feet High Tide
Thu -- 06:32 AM EST Sunrise
Thu -- 07:47 AM EST -1.10 feet Low Tide
Thu -- 07:59 AM EST Moonset
Thu -- 01:46 PM EST 8.65 feet High Tide
Thu -- 05:21 PM EST Sunset
Thu -- 08:02 PM EST Moonrise
Thu -- 08:20 PM EST -1.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 6.8 | 7.9 | 7.9 | 6.9 | 5 | 2.7 | 0.6 | -0.8 | -1.1 | -0.2 | 1.8 | 4.4 | 6.8 | 8.3 | 8.6 | 7.9 | 6.2 | 3.8 | 1.4 | -0.5 | -1.4 | -1.1 | 0.3 | 2.7 |
Tide / Current Tables for Dover Point, Piscataqua River, New Hampshire
EDIT (on/off) Help One Week of DataDover Point
Click for Map
Thu -- 01:25 AM EST 7.52 feet High Tide
Thu -- 06:32 AM EST Sunrise
Thu -- 07:22 AM EST -1.03 feet Low Tide
Thu -- 07:59 AM EST Moonset
Thu -- 01:44 PM EST 8.07 feet High Tide
Thu -- 05:21 PM EST Sunset
Thu -- 07:55 PM EST -1.33 feet Low Tide
Thu -- 08:02 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 01:25 AM EST 7.52 feet High Tide
Thu -- 06:32 AM EST Sunrise
Thu -- 07:22 AM EST -1.03 feet Low Tide
Thu -- 07:59 AM EST Moonset
Thu -- 01:44 PM EST 8.07 feet High Tide
Thu -- 05:21 PM EST Sunset
Thu -- 07:55 PM EST -1.33 feet Low Tide
Thu -- 08:02 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 6.5 | 7.4 | 7.3 | 6.2 | 4.3 | 2 | 0 | -0.9 | -0.8 | 0.3 | 2.3 | 4.6 | 6.6 | 7.8 | 8 | 7.2 | 5.4 | 3 | 0.7 | -0.8 | -1.3 | -0.7 | 0.9 | 3 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 (17,4,5,8)
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Ground Weather Radar Station Portland, ME
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Disclaimer: 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 numerious 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. |