Friday, September24, 2021
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Marine Weather and Tides
Hampton, NH

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:31AMSunset 6:38PM Friday September 24, 2021 11:32 PM EDT (03:32 UTC) Moonrise 8:30PMMoonset 10:05AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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- 946 Pm Edt Fri Sep 24 2021
.small craft advisory in effect until 8 am edt Saturday...
Today..SE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Isolated showers this morning. A chance of showers and tstms this afternoon.
Tonight..S winds 15 to 20 kt with gusts up to 30 kt, becoming W 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of tstms. Showers likely.
Sat..NE winds around 5 kt. Seas 3 to 4 ft. Showers likely in the afternoon.
Sat night..SE winds 5 to 10 kt. Seas around 3 ft. Showers with a chance of tstms. Vsby variable to less than one quarter nm.
Sun..W winds 5 to 10 kt. Seas 3 to 4 ft. Showers with a chance of tstms in the morning, then a chance of showers in the afternoon. Vsby variable to less than one quarter nm, increasing to 1 to 3 nm in the afternoon.
Sun night..W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 5 ft.
Mon..SW winds 10 to 15 kt. Seas 3 to 5 ft.
Mon night..W winds 10 to 15 kt. Seas 3 to 4 ft.
Tue..W winds 10 to 15 kt. Seas 2 to 3 ft.
Tue night..NW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms.
ANZ100 946 Pm Edt Fri Sep 24 2021
Synopsis for stonington me to merrimack river ma out to 25 nm.. Southerly winds continue over the waters through evening as the cold front slowly moves through the gulf of maine. Hazardous conditions for small craft will also continue through tonight. The front finally crosses the waters late Saturday with weak low pressure tracking along the coast. Winds turn offshore, with another cold front set to drop towards the waters from the northwest early next week.


7 Day Forecast for Marine Location Near Hampton, NH
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location: 42.97, -70.73     debug


Area Discussion for - Gray/Portland, ME
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FXUS61 KGYX 250152 AFDGYX

Area Forecast Discussion National Weather Service Gray ME 952 PM EDT Fri Sep 24 2021

SYNOPSIS. Slow moving cold front will produce some heavy rainfall and embedded thunderstorms tonight into Saturday morning. Another round of heavy showers Sunday afternoon, especially over the mid-coast ans central Maine. More seasonal temperatures and the threat of showers in the mountains are expected for Monday and Tuesday,

NEAR TERM /UNTIL 6 AM SATURDAY MORNING/. Update . Showers will continue to slowly exit to the east late this evening in good agreement with the latest HRRR. Radar derived rainfall rates have come down somewhat since earlier this evening. Will continue to monitor the Midcoast for a band of potentially locally heavy rain entering the region from Cape Cod and the Gulf of Maine as this area will continue to have deep moisture and high precipitable water values.

Made minor adjustments to temperatures, dew points and winds this hour as drier air continues to pour in from the west. Will add more fog over New Hampshire where visibilities are lowered.

Prev Disc . Cold front is progressing through the area. To the west, across NH the clearing skies are approaching. Meanwhile through Maine southerly flow will continue with showers. Low level instability remains, and some weak rotation has been observed in the convective line. Some reports of up to 2 inches of rain within the convective line.

Expect the front to continue to cross the region overnight. Overall the coverage of showers has been decreasing through the day but the HRRR continues to suggest that some re development. through the mountains is possible over the next few hours. This is supported by the mesoanalysis which shows the higher shear and CAPE holding on through this area, thus have kept the thunder in the forecast through the northern part of the area through midnight.

Tonight the western portion of the CWA should clear out enough for valley fog formation, and have added this to the forecast. Meanwhile across the eastern portion of the area, the front will stall keeping the scattered showers in place across the eastern portion of the area.

SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY/. For Sunday, expect additional rainfall, especially over the eastern portion of the CWA. There are two separate features impacting the amount of rainfall. First, a weak wave rotating around the main low pressure aloft will push into the region. The more negative tilt this can archive the greater the precipitation. Secondly, low pressure along the eastern seaboard will move northwards on Sunday, pushing additional moisture into the stalled frontal boundary. These two factors will combine to lead to widespread rainfall across especially eastern Maine. With two feature competing the confidence in the placement and precip maxima still remains fairly low. Have kept total QPF fairly conservative, although certainly the upslope flow does give a potential for higher totals. This time the center of the rain will be on the upper Kennebec basin, which has been plagued by drought.

LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/. Warm ridging at 500 mb will be replace by cooler and more seasonable troughing over the NE CONUS next week, as double omega block settles across NOAM and the Atlantic, with central trough right overhead. This low will holds in place thru at least the middle of next week, when models diverge on solutions.

Starting Sunday sun night should see any showers associated with the slow moving front exiting to the NE in the evening. This will be followed by clearing in the south, but clouds linger in the N as the closed upper low wobbles around over N Quebec. Lows Sunday night will be in the low-mid 40s in the mtns, to the low 50s in the S.

Mon-Tue will be similar, as 500 mb closed low hangs out to the N, a and waves of energy move around that low. This will produce some rounds of clouds, and the chance of showers, mainly in the mtns. Highs will be in the low-mid 60s in the N to around 70 in the S, which is still on the high side of normal, and overnight lows 40-45 in the mtns to the low 50s in the S. Skies will vary from partly to mostly cloudy through the period with more clouds in the mtns.

Confidence drops off a bit Wed-Fri, with models suggesting that another closed low breaks off on the one to out n and heads equatorward toward the SE CONUS, with some ridging developing between the two systems as the pull away from each other. Currently this would call for a mainly dry and seasonable period, but, again confidence remains low for mid-late next week.

AVIATION /02Z SATURDAY THROUGH WEDNESDAY/. Short Term . Cold front is moving through the area, with MVFR ceilings currently across NH and VFR and clearing to the west. This clearing line will move eastwards overnight. Across Maine pockets of IFR and widespread MVFR will continue until he front clears the area late. Valley fog may bring IFR to the west in the morning on Saturday before conditions improve to VFR for the day.

Long Term . Any flight restrictions early Sunday evening, should clear out overnight, except for lingering MVFR cigs at KHIE. Will be mainly VFR Monday through Wed, but again could see some periods of MVFR cigs at KHIE as flow from the NW persists.

MARINE. Short Term . Gusty southerly flow and 5ft seas will keep a SCA in place across the region through evening. By tomorrow morning, winds and seas will subside and conditions will remain below SCA through the weekend.

Long Term . Winds/seas expected to stay below SCA criteria Mon- Wed.

HYDROLOGY. Heavy rain showers will continue through this evening with the potential threat for flooding along the Midcoast region of Maine.

The threat for flooding does increase on Sunday through the upper Andro and Upper Kennebec basins where the focus of the heaviest rainfall exists. 6hr RFC guidance suggests that 2-3 inches in 6 hrs would be enough to push the rivers to flood stage but suspect the Sunday rainfall will be over a longer period than that. Thus while flooding cannot be ruled out feel the most likely scenario is a beneficial rain to the northern portion of the area.

GYX WATCHES/WARNINGS/ADVISORIES. ME . None. NH . None. MARINE . Small Craft Advisory until 8 AM EDT Saturday for ANZ150>154.

Cannon


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IOSN3 - Isle of Shoals, NH 6 mi32 min WSW 8 G 8 68°F 1016.4 hPa (+0.6)58°F
CMLN3 7 mi148 min WNW 13 86°F 65°F
BGXN3 - Great Bay Reserve, NH 8 mi47 min Calm 65°F 1017 hPa64°F
44030 - Buoy B0102 - Western Maine Shelf 22 mi88 min SSW 5.8 G 7.8 65°F 64°F5 ft1017.4 hPa
WELM1 - 8419317 - Wells, ME 26 mi44 min W 2.9 G 5.1 65°F 67°F1017 hPa
WEXM1 - Wells Reserve, ME 27 mi32 min WSW 1.9 65°F 63°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 32 mi88 min SW 5.8 G 7.8 67°F 4 ft1016.4 hPa
44098 - Jeffrey's Ledge, NH (160) 32 mi36 min 67°F5 ft
44013 - BOSTON 16 NM East of Boston, MA 43 mi22 min W 3.9 G 5.8 63°F1017.6 hPa
BHBM3 - 8443970 - Boston, MA 46 mi44 min 71°F 1016.9 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 49 mi22 min SSW 3.9 G 5.8 64°F 64°F1016 hPa63°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH10 mi36 minW 510.00 miOvercast66°F60°F82%1017.5 hPa
Rochester - Skyhaven Airport, NH24 mi41 minN 010.00 miOvercast64°F62°F93%1016.6 hPa

Link to 5 minute data for KPSM

Wind History from PSM (wind in knots)
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Tide / Current Tables for Gosport Harbor, Isles of Shoals, New Hampshire
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Gosport Harbor
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Fri -- 01:52 AM EDT     8.74 feet High Tide
Fri -- 06:32 AM EDT     Sunrise
Fri -- 07:50 AM EDT     0.61 feet Low Tide
Fri -- 10:05 AM EDT     Moonset
Fri -- 02:05 PM EDT     8.89 feet High Tide
Fri -- 06:35 PM EDT     Sunset
Fri -- 08:16 PM EDT     0.36 feet Low Tide
Fri -- 08:28 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.18.48.78.16.54.42.310.61.32.84.96.98.38.98.57.152.81.20.40.61.83.6

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
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Fri -- 03:26 AM EDT     -0.00 knots Slack
Fri -- 06:12 AM EDT     -1.83 knots Max Ebb
Fri -- 06:32 AM EDT     Sunrise
Fri -- 10:02 AM EDT     0.00 knots Slack
Fri -- 10:05 AM EDT     Moonset
Fri -- 12:03 PM EDT     1.23 knots Max Flood
Fri -- 03:49 PM EDT     -0.00 knots Slack
Fri -- 06:36 PM EDT     Sunset
Fri -- 06:36 PM EDT     -1.84 knots Max Ebb
Fri -- 08:29 PM EDT     Moonrise
Fri -- 10:32 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.90.70.3-0.5-1.4-1.8-1.7-1.4-0.9-00.91.210.80.5-0.1-1.1-1.7-1.8-1.5-1.2-0.50.4

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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