Wednesday, April1, 2020
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Marine Weather and Tides
Kittery, 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 6:22AMSunset 7:11PM Wednesday April 1, 2020 4:34 AM EDT (08:34 UTC) Moonrise 11:31AMMoonset 2:22AM Illumination 58% Phase: First Quarter Moon; Moon at 8 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- 340 Am Edt Wed Apr 1 2020
.gale watch in effect from Thursday morning through Friday evening...
Today..N winds 10 to 20 kt, becoming 15 to 20 kt this afternoon. Seas 3 to 5 ft.
Tonight..N winds 15 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers.
Thu..N winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to 7 ft. Showers in the morning, then rain in the afternoon.
Thu night..N winds 20 to 30 kt with gusts up to 40 kt. Seas 6 to 9 ft, building to 8 to 13 ft after midnight. Rain.
Fri..N winds 20 to 30 kt with gusts up to 40 kt. Seas 10 to 15 ft. Rain likely in the morning, then a chance of showers in the afternoon.
Fri night..NE winds 15 to 25 kt with gusts up to 35 kt. Seas 11 to 15 ft, subsiding to 11 to 13 ft after midnight.
Sat..NE winds 10 to 20 kt with gusts up to 30 kt. Seas 9 to 12 ft.
Sat night..NE winds 5 to 10 kt with gusts up to 20 kt. Seas 7 to 10 ft.
Sun..E winds 5 to 10 kt. Seas 5 to 8 ft.
Sun night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers.
ANZ100 340 Am Edt Wed Apr 1 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Low pressure develops off the carolina coast today and moves into the north atlantic. This storm will intensify and meander off the coast before finally departing to start the weekend. A period of stronger gale force winds is possible along with building seas. High pressure and quieter conditions return this weekend. &&


7 Day Forecast for Marine Location Near Kittery, ME
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location: 43.08, -70.75     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 010804 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 404 AM EDT Wed Apr 1 2020

SYNOPSIS. As upper level low spins over the area this week, enhancing a strong offshore low spinning through the North Atlantic. Temperatures will remain cool with cloudy conditions and periods of showers. The most likely period of rain will be on Thursday as a wave of energy rotates in from the northeast. High pressure nudges in from the northwest this weekend.

NEAR TERM /TODAY/. Clouds are rotating back into the area from the northeast this morning and expect that trend to continue until most of the area is cloudy by this afternoon. For the most part we don't expect precipitation yet, but we can't rule out a stray shower in the far eastern part of the forecast area this afternoon. Temperatures will be relatively cool . generally in the 40s . with the warmest temperatures in the southwest where the clouds will be slowest to arrive.

SHORT TERM /TONIGHT/. If the clouds haven't already spread through the entire area by this afternoon, then they will finish doing so tonight. The clouds and low level moisture keep temperatures from dropping much with lows only in the 30s. By morning we will see the first of the more widespread shower activity arriving from the northeast.

LONG TERM /THURSDAY THROUGH TUESDAY/. Stubborn troughing persists through the end of the work week. A quick moving upper level low presently crossing into the Plains combines with nearly stationary troughing over New England and the Canadian maritimes with strong cyclogenesis over the Atlantic. Long range model suites are in general agreement that downstream ridging over the North Atlantic breaks down this weekend, allowing a somewhat more progressive pattern with near- normal temperatures into next week.

Starting Thursday, low pressure east of Cape Cod and south of Halifax intensifies as it briefly retrogrades/stalls. An inverted trough associated with a spoke of vorticity rotates around the NW quadrant of the low and into our region Thursday with widespread precipitation. Rain showers yield to more steady rain as forcing focuses Thursday afternoon and evening, moving in a general NE to SW direction at the regional scale. Continuing the inherited forecast's line of logic . incoming precipitation accompanies a deep, maritime airmass with temperature profiles supporting primarily rain across the board for the event. The caveat is light snow upon onset and a brief transition period featuring pockets of sleet and freezing rain Thursday morning over higher terrain. After collaborating with neighboring offices . have left mixed precipitation out of the forecast with understanding that trend would be toward warmer temperatures with quite impacts overall.

QPF reflects a general 0.5-1.0" rainfall event with highest amounts along the coast extending into the east- facing upslopes of the western Maine mountains into the Whites. A look at ensembles shows potential for 1-1.5" in some locations along the southern Maine and New Hampshire seacoast with the chance of coastal frontal enhancement. Inland flood threat doesn't seem to be a major issue with this system as highest rainfall falls over snow-free areas over several hours or more. In general the flooding outlook remains near or below average on the season given current snow and river ice conditions. More information on coastal flood threat below.

Dry air starts to work in aloft by mid-Friday, allowing rain showers to gradually lose intensity and coverage. Showers will tend to concentrate in the mountains, especially east-facing upslopes, before trending down to dry by the end of the day Friday. Confidence in precipitation end time is still a bit low at this time, but the dry trend will occur generally from N to S. High pressure centered over eastern Canada wedges in over the weekend with weak northerly winds and decreasing clouds. The next system crosses Sunday night into Monday as low pressure crosses Quebec, pushing a trailing cold front across New England. A preliminary look at this system yields the usual questions given the pattern . dry air and disconnect from parent forcing further north lends to a relatively low confidence forecast in terms of measurable precipitation; highest probability of precipitation remains across the north in higher terrain.

AVIATION /07Z WEDNESDAY THROUGH SUNDAY/. Short Term . Expect clouds increasing from the northeast today, though ceilings should be about 5000FT to start. These ceilings may decrease through the day with eastern areas going MVFR by this afternoon. The lower ceilings spread southwest tonight with MVFR or IFR likely for most areas by Thursday morning.

Long Term . Widespread MVFR, likely worse near the coast, persists through most of Thursday into Friday as a storm over the Atlantic retrogrades west, impacting New England. Greatest chances for IFR come in pockets of moderate to heavy rainfall, and DZ/FG in the breaks between, impacting mainly the coastal plain. Winds will remain out of the north through this period, possibly gusting in excess of 30 kts along the coast late Thursday into Friday. Winds back NErly as the system pulls away late Friday with improvements from N to S. VFR returns for the weekend.

MARINE. Short Term . Northerly flow continues today but should stay below 25 KT for the most part. Wave heights have finally dropped to around 5 FT or less. We may see the next round of stronger winds beginning as soon as late tonight, with winds possibly peaking at gale strength a bit further out in the long term forecast.

Long Term . After drifting NEward from the Carolina coast, low pressure east of Cape Code and south of Nova Scotia intensifies, retrograding some during the day Thursday. Northerly to NErly winds ramp up to strong Gale Force over the waters and Penobscot during this time; a Gale Watch has been posted for Thursday and Friday. Less confidence exists over the Casco Bay where temperature profiles are less conducive for mixing down strong gusts . but do expect at least SCA gusts there. Seas build during this time as well as the storm churns offshore. Off- to along- shore flow will mitigate strong wind-driven wave action, although swells from the low itself will lead to wave heights 5-10 ft over the waters, as high as 15 ft off Jeffrey's Ledge. The system pulls away Friday into the weekend but strong seas are slow to erode; expect SCA seas to persist through at least Saturday.

TIDES/COASTAL FLOODING. Tides remain astronomically low early this week, but gradually increase in magnitude by late in the week and over the weekend. A large, intense and retrograding storm over the open Atlantic will allow for a building swell by late in the week and early in the weekend as the storm exits out to sea. Therefore, some splash-over is possible as we head into Friday and Saturday. In general the greatest threat for splash-over is along the New Hampshire seacoast and extreme southern coastal Maine where greatest fetch is accomplished under N to NErly flow and E to NErly swells.

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 . Gale Watch from Thursday morning through Friday evening for ANZ150-152-154. Gale Watch from Thursday afternoon through Friday evening for ANZ151.

SYNOPSIS . NEAR TERM . Kimble SHORT TERM . Kimble LONG TERM . Casey AVIATION . MARINE . TIDES/COASTAL FLOODING . EQUIPMENT .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IOSN3 - Isle of Shoals, NH 10 mi35 min N 12 G 13 37°F 1012.3 hPa (-1.5)34°F
44073 12 mi151 min N 7.8 G 12 38°F 41°F
44030 - Buoy B0102 - Western Maine Shelf 18 mi151 min N 9.7 G 14 5 ft1015 hPa
WELM1 - 8419317 - Wells, ME 19 mi65 min N 8 G 9.9 32°F 42°F1013.2 hPa
WEXM1 - Wells Reserve, ME 21 mi95 min NNW 5.1 31°F 26°F
44098 - Jeffrey's Ledge, NH (160) 36 mi57 min 43°F6 ft
44029 - Buoy A0102 - Mass. Bay/Stellwagen 40 mi91 min N 12 G 14 36°F 42°F6 ft1010.3 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 45 mi45 min NE 16 G 19 37°F 40°F5 ft1012.2 hPa (-2.0)28°F
CASM1 - 8418150 - Portland, ME 48 mi65 min 36°F 41°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH4 mi99 minNW 410.00 miFair28°F26°F93%1012.9 hPa
Rochester - Skyhaven Airport, NH16 mi44 minNW 610.00 miFair27°F24°F89%1012.8 hPa
Sanford, Sanford Regional Airport, ME22 mi39 minN 010.00 miFair26°F25°F96%1014 hPa

Link to 5 minute data for KPSM

Wind History from PSM (wind in knots)
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Last 24hrN8N8N7NE12NE11
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E6E5E9SE11--E8SE6--CalmNW3NW6NW6NW5NW5NW4N6
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Tide / Current Tables for Portsmouth, Portsmouth Harbor, New Hampshire
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Portsmouth
Click for Map
Wed -- 02:22 AM EDT     Moonset
Wed -- 05:24 AM EDT     7.70 feet High Tide
Wed -- 06:21 AM EDT     First Quarter
Wed -- 06:24 AM EDT     Sunrise
Wed -- 11:30 AM EDT     Moonrise
Wed -- 11:48 AM EDT     0.78 feet Low Tide
Wed -- 06:11 PM EDT     6.79 feet High Tide
Wed -- 07:10 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.72.74.15.66.97.67.66.85.43.82.11.10.81.32.33.75.26.36.86.65.84.53.11.9

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
Click for Map
Wed -- 01:25 AM EDT     0.00 knots Slack
Wed -- 02:22 AM EDT     Moonset
Wed -- 03:34 AM EDT     1.07 knots Max Flood
Wed -- 06:21 AM EDT     -0.00 knots Slack
Wed -- 06:21 AM EDT     First Quarter
Wed -- 06:23 AM EDT     Sunrise
Wed -- 10:11 AM EDT     -1.67 knots Max Ebb
Wed -- 11:30 AM EDT     Moonrise
Wed -- 02:18 PM EDT     0.00 knots Slack
Wed -- 04:07 PM EDT     0.89 knots Max Flood
Wed -- 07:09 PM EDT     Sunset
Wed -- 07:14 PM EDT     -0.00 knots Slack
Wed -- 10:36 PM EDT     -1.42 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.20.4110.50.1-0.2-0.6-1.3-1.7-1.5-1.1-0.7-0.20.50.90.70.30-0.2-0.8-1.3-1.4

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.
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Wind Forecast for Gray/Portland, ME (4,6,7,8)
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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.