Friday, August18, 2017 L-36.com


Marine Weather and Tides
Dover, NH

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:52AMSunset 7:42PM Friday August 18, 2017 12:18 PM EDT (16:18 UTC) Moonrise 2:15AMMoonset 5:24PM Illumination 14% Phase: Waning Crescent; Moon at 26 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- 1112 Am Edt Fri Aug 18 2017
.small craft advisory in effect from 8 pm edt this evening through Saturday evening...
This afternoon..SE winds 10 to 15 kt. Seas 2 to 4 ft. Showers.
Tonight..SE winds 15 to 20 kt, becoming S 10 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Patchy fog in the evening. Showers in the evening, then showers likely with a chance of tstms after midnight. Some tstms may produce heavy rainfall after midnight with vsby 1 to 3 nm.
Sat..S winds 5 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers.
Sat night..SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 3 to 5 ft. A chance of showers in the evening.
Sun..W winds 5 to 10 kt. Seas 2 to 4 ft.
Sun night..W winds 5 to 10 kt. Seas around 2 ft.
Mon..SW winds 5 to 10 kt. Seas around 2 ft.
Mon night..SW winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft.
Tue..SW winds 5 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Tue night..SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms.
ANZ100 1112 Am Edt Fri Aug 18 2017
Synopsis for stonington me to merrimack river ma out to 25 nm.. A warm front will approach from the southwest today and will gradually push east of the region tonight. A slow moving cold front will cross the region Saturday through Saturday night. High pressure will build in from the west Sunday through Monday and will slide offshore on Tuesday. A cold front will move in from the west Tuesday night and will cross the region on Wednesday. High pressure will build in behind the front Wednesday night through Thursday.

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 181524
afdgyx
area forecast discussion
national weather service gray me
1124 am edt Fri aug 18 2017

Synopsis
A warm front will approach from the southwest today and will
gradually push east of the region tonight. A slow moving cold
front will cross the region Saturday. High pressure will build
in from the west Sunday through Monday and will slide offshore
on Tuesday. A cold front will move in from the west Tuesday
night and will cross the region on Wednesday. High pressure will
build in behind the front Wednesday night through Thursday.

Near term until 6 pm this evening
1100 am update...

rain ahead of an approachiung warm front currently moving east
through most of the forecast area with a back edge entering the
central and northern connecticut valley late this morning.

Expect showers in northern zones of new hampshire and western
maine to gradually end from west to east through early
afternoon. Main focus of rain this afternoon will be across
southern new hampshire and coastal and southern interior
sections of maine as low level jet combines with pwat's
approaching 2 inches to produce occssionally heavy downpours
into the evening hours. Could see a rumble of thunder in far
southwest new hampshire but extensive marine layer will keep the
majority of the forecast area free of convective activity. Have
updated pop and wx grids based on current radar trends and
latest hrrr which seems to have a pretty good handle on current
situation. Aside from minor temp TD tweaks... No other changes
planned attm.

Prev disc...

7am update... Showers are just reaching the ct river valley and
will move eastwards this morning. Have updated pop to account
for this timing. Convection further southwest will gradually
expand and fill and move over coastal regions later this
afternoon.

Prev... Low pressure moving out of the great lakes will push a
warm front through the region today. To our west in new york,
scattered showers with elevated convection have been slowly
advancing all night. These showers will move into western new
hampshire mid morning and gradually spread across maine. Expect
things to fill in after dawn as the upper level support
increases but still looking at a more showery than stratiform
system. Overall expect widespread precipitation amounts to be
fairly moderate and have trending a bit lower with amounts and
pop through today to reflect the upstream trend.

While the general areal trend will be scattered there is a
threat for some pockets of heavier rain. As we move into the
warm sector pwat values climb to near 2 inches which will
provide plenty of moisture for any convection. The problem will
be getting that convection going. Clouds remain over the region
right now and even as they lift north flow will turn onshore
keeping cooler and moist conditions in place. This means the
threat for thunderstorms and heavy rain is confined to southern
new hampshire through evening but may expand through the coast
of maine overnight.

Short term 6 pm this evening through 6 pm Saturday
Overnight we see cold front slowly begin to push towards the
area. Ahead of and along the front is another area to watch for
heavier convective precipitation, however this looks to align to
be mostly offshore by the time it arrives into our area but the
immediate coastline in maine, especially from the midcoast
eastwards will again have a threat for heavier rain showers
through late tonight.

The front will push through during the day on Saturday leaving
upslope flow and mountain showers in its wake.

Long term Saturday night through Thursday
The cold front pushes offshore by Saturday evening followed by
clearing and a drier west to northwest flow. Scattered lingering
showers are possible Sat night across central and northern areas
of the forecast area but downsloping areas will remain dry.

High pressure builds across the area for Sunday into Tuesday.

Dry weather and warm temps are expected under this ridge of high
pressure.

By Tue night an approaching upper trof with an associated cold
front will spread scattered showers across the area and continue
until it exits to the east late wed. A dry and cooler canadian
air mass returns for Wed night and thu.

Generally accepted the superblend model for the outlook period.

Aviation 15z Friday through Tuesday
Short term... VFR conditions will slowly give way to MVFR later
today as clouds and rain move into the region. MVFR will persist
overnight with ifr along the coastline where onshore flow will
help fog and low ceilings to form. Conditions will return to
vfr late Saturday after a cold front moves through.

Long term...VFR conditions expected Saturday night through
Tuesday.

Marine
Short term... Increasing southerly flow in teh warm sector of a
cyclone will push wind gusts to 25-30kts across the outer waters
and a SCA has been issued for tonight into tomorrow. The winds
will decrease after the front moves through Saturday morning
with seas subsiding late Saturday night.

Long term... Sca's may be needed on the outer waters Saturday
night into Sunday mainly due to seas... Otherwise winds and seas
expected to be below SCA criteria.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... Small craft advisory from 8 pm this evening to 8 pm edt
Saturday for anz150-152-154.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 10 mi94 min E 1.9 69°F 1014 hPa64°F
WELM1 - 8419317 - Wells, ME 18 mi49 min NNE 5.1 G 7 65°F 58°F1014.5 hPa
WEXM1 - Wells Reserve, ME 19 mi79 min N 2.9 66°F 64°F
IOSN3 - Isle of Shoals, NH 21 mi79 min SE 14 G 15 67°F 1012.9 hPa (-1.6)64°F
44030 - Buoy B0102 - Western Maine Shelf 23 mi135 min SE 1.9 G 3.9 65°F 64°F2 ft1014.2 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 45 mi89 min E 3.9 G 3.9 64°F 64°F2 ft1014.7 hPa (+0.3)63°F
CASM1 - 8418150 - Portland, ME 46 mi49 min 62°F 60°F1014.9 hPa
44098 - Jeffrey's Ledge, NH (160) 46 mi43 min 65°F2 ft
44029 - Buoy A0102 - Mass. Bay/Stellwagen 49 mi75 min SE 16 G 18 69°F 67°F2 ft1012.4 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester - Skyhaven Airport, NH6 mi28 minE 52.00 miRain Fog/Mist63°F60°F90%1013 hPa
Pease Air Force Base / Portsmouth, NH8 mi81 minESE 74.00 miLight Rain Fog/Mist68°F62°F82%1013.2 hPa
Sanford, Sanford Regional Airport, ME16 mi23 minENE 65.00 miRain Fog/Mist62°F61°F96%1015.1 hPa

Wind History from DAW (wind in knots)
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Last 24hrW12
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NW105NW9NW5NW3NW4CalmCalmNW3NW3NW4CalmNW3N3CalmCalmCalmCalmE3NE4E5
1 day agoNW16
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NW7W63Calm4CalmNW4CalmNW3NW3NW4NW5W3345NW11
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2 days agoS64444S4S4CalmCalmCalmCalmW334W3CalmCalmNW6CalmNW9NW14NW9NW11NW10

Tide / Current Tables for Dover, Cocheco River, Piscataqua River, New Hampshire
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Dover
Click for Map
Fri -- 02:15 AM EDT     Moonrise
Fri -- 03:54 AM EDT     -0.19 feet Low Tide
Fri -- 05:52 AM EDT     Sunrise
Fri -- 10:14 AM EDT     7.04 feet High Tide
Fri -- 04:07 PM EDT     0.21 feet Low Tide
Fri -- 05:23 PM EDT     Moonset
Fri -- 07:41 PM EDT     Sunset
Fri -- 10:34 PM EDT     8.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.43.41.50.2-0.20.31.63.45.26.476.85.84.12.20.80.20.51.73.55.57.28.18.1

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
Click for Map
Fri -- 12:33 AM EDT     -2.04 knots Max Ebb
Fri -- 02:15 AM EDT     Moonrise
Fri -- 04:33 AM EDT     0.00 knots Slack
Fri -- 05:52 AM EDT     Sunrise
Fri -- 06:26 AM EDT     1.16 knots Max Flood
Fri -- 10:15 AM EDT     -0.00 knots Slack
Fri -- 12:57 PM EDT     -1.87 knots Max Ebb
Fri -- 04:45 PM EDT     0.00 knots Slack
Fri -- 05:22 PM EDT     Moonset
Fri -- 06:51 PM EDT     1.42 knots Max Flood
Fri -- 07:40 PM EDT     Sunset
Fri -- 10:44 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-2-1.7-1.3-0.60.41.11.10.80.60.2-0.7-1.6-1.9-1.7-1.3-0.70.31.21.41.20.90.6-0.3

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Gray/Portland, ME (12,3,4,5)
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Ground Weather Radar Station Portland, ME
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weather_mapweather_map weather_map

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Disclaimer:
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 numerious 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.