Monday, March30, 2020
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Marine Weather and Tides
Dover, NH

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 6:26AMSunset 7:09PM Monday March 30, 2020 8:43 AM EDT (12:43 UTC) Moonrise 9:53AMMoonset 12:24AM Illumination 39% Phase: Waxing Crescent; Moon at 6 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- 306 Am Edt Mon Mar 30 2020
.small craft advisory in effect through Tuesday afternoon...
Today..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A slight chance of showers this morning, then showers likely this afternoon.
Tonight..NE winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 10 ft. Rain and snow showers likely.
Tue..N winds 15 to 20 kt, becoming ne 10 to 15 kt in the afternoon. Gusts up to 30 kt. Seas 6 to 9 ft. A chance of snow showers in the morning.
Tue night..N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft.
Wed..N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft.
Wed night..N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers after midnight.
Thu..N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers.
Thu night..N winds 10 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. A chance of showers.
Fri..N winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers.
Fri night..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 8 to 11 ft.
ANZ100 306 Am Edt Mon Mar 30 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Expect an increasing north to northeasterly flow over the gulf of maine through much of the week. A broad area of low pressure will remain overheard through the week as well, bringing low clouds, fog and drizzle. &&


7 Day Forecast for Marine Location Near Dover, NH
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location: 43.2, -70.87     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 301122 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 722 AM EDT Mon Mar 30 2020

SYNOPSIS. As the primary low pressure system moves east today, an upper level low pressure center will move into New England. This will sit and spin over the region through the week, keeping periods of showers and cool weather in the forecast through Friday.

NEAR TERM /TODAY/. 730AM UPDATE . Some areas of fog and drizzle are noted this morning mainly along the Maine coast and in eastern New Hampshire. Otherwise the more synoptic scale showers are to our east or west, though we do still expect a round of showers moving in this afternoon. Have added fog to the forecast for the next few hours, though left the mention of drizzle out to try to prevent forecast wording from getting too complicated.

ORIGINAL DISCUSSION . Primary round of warm advection precipitation has moved east and the Winter Weather Advisory has been dropped. From this point on we are expecting periods of showers as upper level low pressure moves into the area. It seems like the best timing for these showers will be in the afternoon as a spoke of energy rotates around the incoming upper low and moves into New Hampshire and western Maine. Timing of precipitation chances were based on this idea, though confidence is not very high on timing. Northeast low level winds continue around the departing surface low, pulling in colder air into the region. This will make snow showers the increasingly common precipitation type even as surface temperatures may be above freezing. Do not expect significant accumulations, though heavier showers will have the chance of leaving a healthy coating.

SHORT TERM /TONIGHT AND TUESDAY/. We may get a break from the showers starting tonight as we will find ourselves on the dry side of the upper low drifting by just to our south. It will still be cloudy and temperatures won't fall off that much with 20s and low 30s widespread. It's possible we see a few breaks in the clouds on Tuesday and high temperatures will be a few degrees warmer . in the 40s.

LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/. 00Z operational and ensemble models remain in fairly good agreement suggesting that cut-off low season has begun across northern New England.

After relatively dry conditions Tuesday night, moisture begins to pivot and retrograde westward from the Canadian Maritimes on Wednesday. Precipitation over eastern Maine will gradually shift towards western Maine and New Hampshire Wednesday night and Thursday. Temperature profiles would suggest mainly scattered snow showers Wednesday night. By Thursday, warm air advection from our east will allow the precipitation to change to rain showers as H8 temperatures climb to 0C or above in most areas. On Friday, cooler and drier air will filter back into the region on north to northeasterly winds.

Next weekend, it appears the blocking pattern will dissipate, allowing weather systems to once again travel across the country from west to east and into New England. This will allow for drier and more mild conditions across the region.

AVIATION /11Z MONDAY THROUGH FRIDAY/. Short Term . IFR conditions are widespread this morning and are likely to continue for most of the day. Another round of snow showers is expected, likely in the afternoon. Although snow showers should end tonight, IFR or MVFR ceilings likely continue through Tuesday.

Long Term . Cutoff low season has begun and a showery pattern will continue through the rest of the work week. This pattern will lead to scattered rain and snow showers at times lowering ceilings and visibilities into the MVFR and IFR categories.

MARINE. Short Term . Easterly flow over the Gulf of Maine continues with gusts of 25 to 30 KT and seas building to 7 to 10 FT over the western Gulf of Maine. Winds become more northerly with time as low pressure moves off to the east. The Small Craft Advisory has been extended through Tuesday afternoon when winds finally drop off a bit. However, it is likely we will have to extend the advisory for seas into April.

Long Term . A maritime area of low pressure will keep gusty north to northeasterly winds over the coastal waters as well as moderately high seas right through the remainder of the work week.

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 . None. NH . None. MARINE . Small Craft Advisory until 6 PM EDT Tuesday for ANZ150>154.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 10 mi119 min ENE 6 38°F 1017 hPa38°F
WELM1 - 8419317 - Wells, ME 18 mi74 min ENE 9.9 G 16 38°F 42°F1017.6 hPa
WEXM1 - Wells Reserve, ME 19 mi104 min NE 8 38°F 36°F
IOSN3 - Isle of Shoals, NH 21 mi44 min ENE 24 G 26 38°F 1015.3 hPa (-0.0)38°F
44007 - PORTLAND 12 NM Southeast of Portland,ME 45 mi54 min E 19 G 23 38°F 40°F10 ft1016.9 hPa (+0.0)37°F
44098 - Jeffrey's Ledge, NH (160) 46 mi66 min 42°F10 ft
CASM1 - 8418150 - Portland, ME 46 mi74 min 37°F 41°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 49 mi100 min ENE 19 G 23 40°F 42°F9 ft1013.7 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester - Skyhaven Airport, NH6 mi53 minNNE 52.50 miFog/Mist36°F34°F93%1017.1 hPa
Pease Air Force Base / Portsmouth, NH8 mi1.8 hrsNNE 83.00 miLight Drizzle Fog/Mist38°F36°F95%1016.9 hPa
Sanford, Sanford Regional Airport, ME16 mi48 minN 62.00 miLight Rain Fog/Mist35°F35°F100%1018.3 hPa

Link to 5 minute data for KDAW

Wind History from DAW (wind in knots)
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Last 24hrNE45E3E7E4E8E7E7E44E9NE7NW11NE7
G17
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1 day agoNW4CalmCalmS5SE9S8S64SE8SE4SE4CalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalmCalm
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Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
Click for Map
Mon -- 12:24 AM EDT     Moonset
Mon -- 04:58 AM EDT     6.84 feet High Tide
Mon -- 06:27 AM EDT     Sunrise
Mon -- 09:53 AM EDT     Moonrise
Mon -- 11:37 AM EDT     0.52 feet Low Tide
Mon -- 05:35 PM EDT     6.14 feet High Tide
Mon -- 07:08 PM EDT     Sunset
Mon -- 11:48 PM EDT     1.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.32.33.75.36.46.86.55.64.32.81.40.70.61.22.43.95.266.15.64.73.42.21.3

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
Click for Map
Mon -- 12:23 AM EDT     Moonset
Mon -- 01:54 AM EDT     1.19 knots Max Flood
Mon -- 04:44 AM EDT     -0.00 knots Slack
Mon -- 06:27 AM EDT     Sunrise
Mon -- 08:27 AM EDT     -1.74 knots Max Ebb
Mon -- 09:53 AM EDT     Moonrise
Mon -- 12:27 PM EDT     0.00 knots Slack
Mon -- 02:22 PM EDT     0.97 knots Max Flood
Mon -- 04:57 PM EDT     -0.00 knots Slack
Mon -- 07:07 PM EDT     Sunset
Mon -- 08:48 PM EDT     -1.50 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.91.20.80.3-0.1-0.5-1.1-1.7-1.7-1.2-0.8-0.30.40.90.80.4-0-0.2-0.7-1.3-1.5-1.1-0.7

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 (8,2,3,4)
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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.