Tuesday, March31, 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 6:24AMSunset 7:10PM Tuesday March 31, 2020 1:27 PM EDT (17:27 UTC) Moonrise 10:38AMMoonset 1:24AM Illumination 51% 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- 1022 Am Edt Tue Mar 31 2020
.small craft advisory in effect through late tonight...
This afternoon..N winds 15 to 20 kt, becoming ne 10 to 15 kt. Seas 4 to 7 ft.
Tonight..NE winds 10 to 15 kt. Seas 4 to 6 ft.
Wed..N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Wed night..N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 7 ft. A chance of showers after midnight with vsby 1 to 3 nm.
Thu..N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. A chance of rain in the morning, then rain in the afternoon. Vsby 1 to 3 nm in the morning.
Thu night..N winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 7 to 10 ft, building to 9 to 14 ft after midnight. Rain.
Fri..NE winds 15 to 25 kt with gusts up to 35 kt. Seas 10 to 14 ft. A chance of showers.
Fri night..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 11 to 13 ft.
Sat..NE winds 5 to 15 kt with gusts up to 25 kt. Seas 9 to 12 ft.
Sat night..S winds 5 to 10 kt. Seas 7 to 10 ft.
ANZ100 1022 Am Edt Tue Mar 31 2020
Synopsis for stonington me to merrimack river ma out to 25 nm.. Northerly flow gradually weakens as low pressure pulls away today. However, a large offshore storm will develop during the midweek period before performing a loop well east of cape cod late in the week and into early Saturday before heading out to sea. &&


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 311418 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 1018 AM EDT Tue Mar 31 2020

SYNOPSIS. Upper level low pressure remains over the area through Tuesday. This will keep clouds and cool temperatures in the forecast along with periods of showers. A large maritime low will allow for showery periods during the late to mid week period. Drier conditions arrive late in the week and over the weekend.

NEAR TERM /UNTIL 6 PM THIS EVENING/. 1010 AM . Minor update to adjust sky grids as many areas are experiencing partly to mostly sunny skies, especially in the north. Rest of the forcast remains on track.

630AM UPDATE . The last of this morning's light snow is still rotating southwest and dissipating. Current forecast handles this well. Made only minor adjustments to hourly temperature forecast based on latest observations.

ORIGINAL DISCUSSION . Early this morning rounds of snow showers continue to rotate through western Maine and into New Hampshire as an area of upper level low pressure stalls and reorganizes just offshore. We expect the primary area of showers to push southeast and dissipate this morning with most of the day being dry for our area. Temperatures top out in the 40s with some breaks in the clouds as the day goes on.

SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/. It will be a similar story tonight and Wednesday as the upper low continues to wiggle around over New England. Expect cool conditions with areas of clouds. For the most part we expect shower activity to hold off until late Wednesday at the earliest as another spoke of energy rotates in from the northeast. Temperatures will be in the 40s during the day and drop into the 20s at night.

LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/. 00Z deterministic and ensemble models remain in relatively good agreement tonight forming a large scale, maritime storm over the open Atlantic east, southeast of Cape Cod Wednesday night and Thursday. Scattered rain and snow showers will retrograde back into the region from the Canadian Maritimes Wednesday night, before a period of steady rain crosses the region by Thursday. This is a complex situation with very little upper air data available over the open Atlantic. Small changes in the upper air features makes for a relatively low confidence forecast as we head through the week. In any case, this will remain a highly anomolous and blocked pattern this week with the majority of impacts along and near the coastline.

Gradient and mixing profiles suggest that highest wind gusts will be along and near the coastline Thursday and Friday. Wind gusts over 30 mph possible during those periods.

Somewhat drier and cooler air will enter the region on north, northeasterly low level winds on Friday and Saturday. This will allow for a gradual clearing over the region. By Sunday, this ocean storm will gradually shift east, allowing for weak impulses of energy to move in from the west late in the weekend and early next week.

AVIATION /14Z TUESDAY THROUGH SATURDAY/. Short Term . Should see improving conditions today with VFR possible. Light winds expected.

Long Term . Precipitation backs in from the east due to a retrograding storm out over the open Atlantic. Expect lowering ceilings and visibilities into the MVFR range during the midweek period in light rain and snow showers. Locally IFR conditions on Thursday as a period of mostly rain passes through the region.

MARINE. Short Term . As surface low pressure continues to move away, expect wind speeds to decrease as the day goes on today. However, wave heights will likely stay at or above 5 FT on the outer waters through tonight.

Long Term . A large and intense maritimes storm will be situated off the Mid Atlantic coast through the end of the work week. This system will track in a loop well east of Cape Cod late during the week, retrograding westward for a period while it does so. This will allow for building seas along our shoreline, gradually becoming a long period swell as we head into Saturday as the storm exits out over the open Atlantic.

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.

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. Hopefully by the end of this week.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until noon EDT today for ANZ151-153. Small Craft Advisory until 4 AM EDT Wednesday for ANZ150-152- 154.

SYNOPSIS . NEAR TERM . Schroeter SHORT TERM . Kimble LONG TERM . Cannon 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 9 mi88 min NE 21 G 23 33°F 1017.2 hPa (-1.5)26°F
BGXN3 - Great Bay Reserve, NH 12 mi103 min N 6 40°F 1018 hPa25°F
44030 - Buoy B0102 - Western Maine Shelf 27 mi84 min NE 18 G 21 8 ft1019.7 hPa
44029 - Buoy A0102 - Mass. Bay/Stellwagen 28 mi84 min NNE 19 G 23 35°F 42°F9 ft1015.9 hPa
WELM1 - 8419317 - Wells, ME 32 mi58 min E 12 G 15 36°F 40°F1017.5 hPa
44098 - Jeffrey's Ledge, NH (160) 33 mi80 min 43°F9 ft
WEXM1 - Wells Reserve, ME 33 mi88 min N 6 39°F 24°F
44013 - BOSTON 16 NM East of Boston, MA 38 mi38 min N 18 G 21 35°F 42°F9 ft1016.7 hPa (-1.4)28°F
BHBM3 - 8443970 - Boston, MA 40 mi64 min 39°F 44°F1016.4 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH14 mi32 minENE 610.00 miA Few Clouds43°F24°F49%1016.9 hPa
Lawrence Municipal Airport, MA22 mi34 minENE 310.00 miFair42°F24°F49%1017.3 hPa
Beverly, Beverly Municipal Airport, MA23 mi35 minNNE 8 G 1610.00 miMostly Cloudy39°F28°F65%1016.9 hPa

Link to 5 minute data for KPSM

Wind History from PSM (wind in knots)
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1 day agoE10E14
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2 days agoSE9SE8SE10SE10SE8SE8SE4SE4SE3S4CalmCalmCalmE4E3E5E7SE4NE3E7E7E7E10E8

Tide / Current Tables for Hampton Harbor, New Hampshire
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Hampton Harbor
Click for Map
Tue -- 01:23 AM EDT     Moonset
Tue -- 04:23 AM EDT     8.20 feet High Tide
Tue -- 06:26 AM EDT     Sunrise
Tue -- 10:38 AM EDT     Moonrise
Tue -- 11:06 AM EDT     0.77 feet Low Tide
Tue -- 05:05 PM EDT     7.25 feet High Tide
Tue -- 07:09 PM EDT     Sunset
Tue -- 11:19 PM EDT     1.51 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.43.95.77.38.18.17.35.94.32.51.30.81.12.23.85.56.77.376.24.93.52.21.6

Tide / Current Tables for Newburyport (Merrimack River), Massachusetts Current
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Newburyport (Merrimack River)
Click for Map
Tue -- 01:23 AM EDT     Moonset
Tue -- 01:51 AM EDT     1.30 knots Max Flood
Tue -- 05:43 AM EDT     -0.00 knots Slack
Tue -- 06:26 AM EDT     Sunrise
Tue -- 08:12 AM EDT     -1.40 knots Max Ebb
Tue -- 10:39 AM EDT     Moonrise
Tue -- 12:07 PM EDT     0.00 knots Slack
Tue -- 02:24 PM EDT     1.15 knots Max Flood
Tue -- 03:34 PM EDT     1.10 knots Min Flood
Tue -- 04:04 PM EDT     1.10 knots Max Flood
Tue -- 06:15 PM EDT     -0.00 knots Slack
Tue -- 07:09 PM EDT     Sunset
Tue -- 08:34 PM EDT     -1.17 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.41.11.31.21.10.6-0.3-1.1-1.4-1.3-0.8-0.5-0.10.61.11.11.10.90.2-0.6-1.1-1.1-0.8-0.4

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Gray/Portland, ME (13,3,4,5)
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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.