Sunday, July12, 2020
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Marine Weather and Tides
Hampton Beach, 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 5:15AMSunset 8:23PM Sunday July 12, 2020 12:06 AM EDT (04:06 UTC) Moonrise 12:12AMMoonset 12:40PM 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- 1125 Pm Edt Sat Jul 11 2020
.small craft advisory in effect through Sunday afternoon...
Rest of tonight..S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft.
Sun..S winds 15 to 20 kt, becoming sw 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Areas of fog in the morning with vsby 1 to 3 nm.
Sun night..SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.
Mon..SW winds 5 to 10 kt. Seas 2 to 4 ft. Scattered showers with a chance of tstms in the afternoon.
Mon night..SW winds 5 to 15 kt, becoming W after midnight. Seas 2 to 3 ft. Scattered showers with a chance of tstms in the evening, then scattered showers after midnight. Vsby 1 to 3 nm.
Tue..N winds 5 to 10 kt, becoming ne in the afternoon. Seas 2 to 3 ft. Scattered showers.
Tue night..N winds 5 to 10 kt. Seas around 2 ft. Scattered showers in the evening.
Wed..NE winds 5 to 10 kt. Seas around 2 ft.
Wed night..S winds 5 to 10 kt. Seas around 2 ft.
Thu..S winds 5 to 15 kt with gusts up to 20 kt. Seas around 2 ft.
Thu night..S winds 5 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Winds and seas higher in and near tstms.
ANZ100 1125 Pm Edt Sat Jul 11 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. A trough of low pressure will remain west of the water through early next week. This will allow for scattered showers and perhaps a Thunderstorm during the period, mainly during the afternoon and evening hours. &&


7 Day Forecast for Marine Location Near Hampton Beach, NH
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location: 42.89, -70.77     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 120326 AAB AFDGYX

Area Forecast Discussion . UPDATED National Weather Service Gray ME 1126 PM EDT Sat Jul 11 2020

SYNOPSIS. A trough of low pressure will trigger scattered showers and thunderstorms this evening. Another trough will approach the region from the west on Sunday, triggering more scattered showers and thunderstorms, mainly during the afternoon hours. This system will remain over New England for the beginning of next week, allowing for scattered showers and storms.

NEAR TERM /UNTIL 6 AM SUNDAY MORNING/. Update . Minor changes to account for latest observational trends.

Prev Disc . There will be a moderate rip current risk early this evening along the Maine and New Hampshire beaches.

It will continue to be a very warm and humid evening across the region, especially over southern New Hampshire where overnight lows will be above 70 degrees. Scattered showers and thunderstorms will continue, some with heavy downpours as we remain in near record high precipitable water values for today. A short wave trough will approach from the west, briefly enhancing convection for a period this evening as heights begin to fall aloft.

Thereafter, a few showers and storms will still cross the region, but not as widespread during the late night hours. Greatest chance for strong gusty winds will be over New Hampshire and far western interior Maine where CAPE values will top 1500 J/KG.

Fog will develop once again tonight. Not entirely sure if it will be quite as widespread as last night as winds are gradually backing slightly to the southwest just above the surface with time. However, we may need dense fog advisories for the Midcoast region once again as Rockland already down to a half mile in fog at times.

SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/. It will be very warm and humid again on Sunday, with apparent temperatures running very high, especially over southern New Hampshire. Scattered showers and thunderstorms can be expected once again as a trough of low pressure remains to our west. A cold front will cross the region during the midday hours as well aiding in convective development and allowing perhaps slightly less humid air to advect into the region late in the day.

The convection will diminish Sunday evening. It will be more comfortable with overnight lows dropping into the 60s across the region.

LONG TERM /MONDAY THROUGH SATURDAY/. The active upper level wave pattern continues through the coming work week with a few chances for showers and afternoon storms. Low amplitude flow lends to relatively low confidence when timing out crossing disturbances, especially during the second half of the week when larger synoptic-scale model disagreement comes in. Long-range models continue to diverge beyond midweek, disagreeing on the building and subsequent erosion of ridging. Overall am expecting an unsettled start and end to the week with showers and afternoon storms, punctuated by mid-week ridging. Temperatures will generally run in the 70s and 80s, moderated by seabreezes and periods of onshore flow along the coast.

Starting Monday . upper air charts show a positively tilted trough axis extending from eastern Canada down into the Great Lake region with a stalled surface front around the coastal plain of New England. A vort max/remnant shortwave on the downstream portion of the trough crosses the region during the afternoon with models showing a wave developing along the leftover surface boundary. Expect a moderate rainfall threat in showers, locally enhanced by convection . for storms, models are not very enthusiastic about sfc heating being enough to overcome somewhat weak mid-level lapse rates. However wind fields may still be favorable for organization should pockets of stronger instability develop. The best (still outside) chances for strong storms exist over southern New Hampshire where favorable surface heating may occur. Showers decrease overnight, and increase again Tuesday as the main trough axis crosses the region. Favorable mixing conditions in cold advection Tuesday means a nice northwesterly breeze forms with high bases in any showers that do form.

Ridging builds midweek behind the departing northern stream trough ushering in a drier period and eventually a warming and moistening trend as riding crosses the region. Look for temperatures around normal Wednesday to trend up into the 80s to near 90 by the weekend. Meanwhile upstream, Pacific energy surges into the PACNW/BC mid-week . models diverge in handling this energy, specifically with resulting shortwaves and PoPs locally. Thursday or Friday should see PoPs return.

AVIATION /04Z SUNDAY THROUGH THURSDAY/. Short Term . IFR conditions in scattered showers and thunderstorms this evening. Areas of fog overnight, perhaps not as widespread as last night as winds continue to gradually back with time. LIFR conditions expected in the fog.

Long Term . VFR prevails for the most part with possible restrictions in SHRA Monday and Tuesday with TSRA possibly impacting southern NH/ME terminals on Monday. RKD may again see restrictions in BR/FG Monday night as well.

MARINE. Short Term . SCAs remain in effect. Waves will continue to run in the 4 to 6 foot range with winds gusting out of the south up to 25 kt. Marine fog may lower visibilities tonight, mainly over eastern areas.

Long Term . Waves gradually fall below 5 ft from west to east Monday over the waters. Another period of SCAs is possible toward the end of the work week with a crossing wave, however little confidence exists in timing this system.

HYDROLOGY. We continue to monitor convective development in a deeply rich, tropical environment. Cells continue to propagate rather quickly, but any training could lead to locally heavy rainfall.

There has been some response to the upper reaches of the Saco river due to upslope rains from earlier in the day, however so far, no significant rises.

GYX WATCHES/WARNINGS/ADVISORIES. ME . Dense Fog Advisory until 9 AM EDT Sunday for MEZ022-025>028. NH . None. MARINE . Small Craft Advisory until 5 PM EDT Sunday for ANZ150>154.



NEAR TERM . Legro


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IOSN3 - Isle of Shoals, NH 9 mi127 min SSE 21 G 23 71°F 1004 hPa (+0.4)71°F
BGXN3 - Great Bay Reserve, NH 12 mi82 min SE 1.9 77°F 1004 hPa74°F
CMLN3 13 mi183 min SSE 12 71°F
44030 - Buoy B0102 - Western Maine Shelf 27 mi123 min S 16 G 18 4 ft1010.2 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 28 mi123 min SSW 14 G 14 69°F 3 ft1002.9 hPa
WELM1 - 8419317 - Wells, ME 32 mi49 min SSW 11 G 14 70°F
44098 - Jeffrey's Ledge, NH (160) 33 mi62 min 65°F4 ft
WEXM1 - Wells Reserve, ME 33 mi67 min S 5.1 70°F 70°F
44013 - BOSTON 16 NM East of Boston, MA 38 mi77 min SSE 12 G 14 70°F 68°F2 ft1003.8 hPa (-0.5)70°F
BHBM3 - 8443970 - Boston, MA 40 mi55 min 78°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH14 mi71 minSE 710.00 miOvercast75°F71°F87%1003.9 hPa
Lawrence Municipal Airport, MA22 mi73 minS 7 G 1410.00 miOvercast79°F72°F79%1004.3 hPa
Beverly, Beverly Municipal Airport, MA23 mi74 minS 910.00 miMostly Cloudy77°F72°F85%1003.5 hPa

Link to 5 minute data for KPSM

Wind History from PSM (wind in knots)
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1 day agoCalmCalmCalmE3CalmSE4SW2CalmCalmSE3E5SE6SE8SE10SE10E10E8E9E6E8E7E6E7E9
2 days agoS4CalmCalmCalmCalmCalmCalmCalmCalmNW6CalmE8E7E8E7E9SE9SE8SE8E5E5E5E3Calm

Tide / Current Tables for Hampton Harbor, New Hampshire
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Hampton Harbor
Click for Map
Sun -- 12:12 AM EDT     Moonrise
Sun -- 05:10 AM EDT     7.89 feet High Tide
Sun -- 05:16 AM EDT     Sunrise
Sun -- 11:43 AM EDT     1.06 feet Low Tide
Sun -- 12:40 PM EDT     Moonset
Sun -- 05:44 PM EDT     7.87 feet High Tide
Sun -- 07:31 PM EDT     Last Quarter
Sun -- 08:21 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.62.64.267.37.97.76.85.33.62.11.21.11.73.256.67.67.87.36.24.63.12

Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Newburyport (Merrimack River)
Click for Map
Sun -- 12:12 AM EDT     Moonrise
Sun -- 12:16 AM EDT     0.00 knots Slack
Sun -- 04:01 AM EDT     1.36 knots Max Flood
Sun -- 05:16 AM EDT     Sunrise
Sun -- 06:14 AM EDT     -0.00 knots Slack
Sun -- 08:41 AM EDT     -1.00 knots Max Ebb
Sun -- 12:36 PM EDT     0.00 knots Slack
Sun -- 12:40 PM EDT     Moonset
Sun -- 04:26 PM EDT     1.42 knots Max Flood
Sun -- 06:44 PM EDT     -0.00 knots Slack
Sun -- 07:31 PM EDT     Last Quarter
Sun -- 08:21 PM EDT     Sunset
Sun -- 09:11 PM EDT     -0.97 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.20.50.81.11.410.2-0.5-0.9-1-0.9-0.8-0.50.30.81.11.41.30.6-0.2-0.7-1-0.9-0.9

Weather Map
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wmap_A
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (0,6,7,8)
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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.