Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Dover, NH

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:32AMSunset 5:21PM Wednesday February 20, 2019 4:55 PM EST (21:55 UTC) Moonrise 7:47PMMoonset 8:26AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 308 Pm Est Wed Feb 20 2019
.small craft advisory in effect from 3 am est Thursday through Friday morning...
Tonight..SW winds 5 to 15 kt, becoming S 10 to 20 kt after midnight. Seas 1 foot or less, then 2 to 3 ft after midnight. A chance of snow this evening, then snow after midnight. Vsby 1 to 3 nm.
Thu..S winds 5 to 15 kt, becoming W 10 to 25 kt in the afternoon. Seas 2 to 4 ft. Snow likely or a chance of rain or sleet in the morning with vsby 1 to 3 nm.
Thu night..W winds 15 to 25 kt with gusts up to 35 kt. Seas 2 to 4 ft.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Fri night..NW winds 10 to 15 kt, becoming N 5 to 15 kt after midnight. Seas 2 to 3 ft.
Sat..NW winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less, then 1 to 2 ft in the afternoon.
Sat night..S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Rain and snow likely. Vsby variable to less than one quarter nm.
Sun..SE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 7 ft. Rain. Vsby variable to less than one quarter nm.
Sun night..W winds 15 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Rain. Vsby variable to less than one quarter nm.
Mon..W winds 20 to 30 kt with gusts up to 45 kt. Seas 5 to 8 ft.
Mon night..NW winds 20 to 30 kt with gusts up to 45 kt. Seas 4 to 7 ft.
ANZ100 308 Pm Est Wed Feb 20 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. Low pressure crosses the waters tonight and Thursday with southerly winds shifting to west behind the front. High pressure builds out of the great lakes again behind the front, cresting over the gulf of maine on Saturday. Low pressure than moves along the maine coast on Sunday. &&


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 202140 aaa
afdgyx
area forecast discussion... Updated
national weather service gray me
440 pm est Wed feb 20 2019

Synopsis
Low pressure will move northeast through the great lakes and
into canada overnight lifting a warm front northeast across new
england into early Thursday. This front will be the focus for
snowfall and mixed precipitation before the temperature warms
up behind the warm front. A cold front will drop in from the
north Thursday afternoon bringing cooler weather back into the
region. High pressure moves in from the west Friday and exits to
the east on Saturday. Meanwhile the next storm system will be
developing in the southern plains and tracking northeast toward
the great lakes. It will bring another frontal system into new
england Saturday night into Sunday with another round of wintry
precipitation.

Near term until 6 am Thursday morning
440 pm update...

just a quick update to adjust a headline.

Previous discussion...

clouds are gradually thickening across the region early this
afternoon as a warm front approaches from the southwest. Radar
showing widespread returns across southern new england and
eastern new york but a majority of this not showing up in
surface obs as the very dry airmass in place across the region
is inhibiting northward progress. Main area of precipitation
well back to the southwest over the lower hudson valley into
south central new york. Will take some time to saturate this
airmass so only looking for occasional snow showers in southern
new hampshire from late this afternoon through the early evening
hours. Expect steadier precipitation to move into southern new
hampshire between 800 and 1000 pm and will overspread the
remainder of the forecast area by midnight or shortly after.

Have not made much in the way of changes to snowfall amounts and
still looking for 3 to 6 inches across most of central and
northern maine and new hampshire. Still expecting warmer air
aloft to penetrate into southern new hampshire and
coastal southern interior maine during the early morning hours
with precipitation changing to sleet and possibly a brief period
of freezing rain in southern new hampshire. This should hold
accumulations in the 2 to 3 inch in those locations. Expect low
temperatures to be reached during the evening before temps
become steady or slowly rising. Lows will range through the
teens in the north and lower to mid 20s south.

Short term 6 am Thursday morning through Thursday night
Snow and mixed precipitation will quickly end from southwest to
northeast Thursday morning as trough axis shifts east and
westerlys kick in behind a cold front. Expect clearing downwind
of the mountains during the morning hours and with colder air
lagging back to the west... Should see temps take a jump into 40s
in southern zones which should help melt off area roads. Farther
north clouds and snow showers will persist in the usual upslope
areas. Highs in the north will range through the 30s.

Looking for variable clouds in the mountains Thursday night
with evening snow showers. Remainder of the area will see partly
cloudy skies as high pressure begins building in from the west.

Lows overnight will generally range through the 20s.

Long term Friday through Wednesday
The global pattern stays fairly consistent over the next few
days with a large trough over the western conus. In the east a
series of waves will move through the ridge pushing more
precipitation through the region.

Friday and Saturday we have high pressure over the region. Sunny
skies and fairly moderate temperatures aloft will allow for
highs to reach into the 40s.

Friday night will see skies mostly clear allowing temperatures
to drop back into the teens. By Saturday night another
approaching system brings clouds to the region keeping
temperatures up overnight.

The next system continues our pattern with the main low
pressure tracking to our west through ontario and into southern
quebec. Once again this sets up northern new england to be in
the warm sector of the main cyclone and a mix of precipitation
types is expected. Aloft the infiltration of warm air is likely
and while timing differences between models are to be expected
at this time range all options put warm air into the region far
enough to push a mix through at least the foothills. At the
surface we see what is beginning to become an all too familiar
story. The departing high pressure will allow for cold air to
linger along the mountains and the potential for weak secondary
surface cyclogensis also suggests that colder air may hold on
longer at the surface. Have kept with these trends keeping
colder air longer at the surface while allowing the warm air in
aloft for yet another mixed precipitation event. Temperatures
uncertainty will likely decrease over the next few days as the
system forms to our west and for now have kept to a middle
ground for timing and temperatures.

Behind the system on Sunday night into Monday we see a cold
front cross the region with the cold air advection pushing in.

While the initial cold FROPA may actually increase temps briefly
across the interior western maine mountains as downsloping takes
over from the cold air damming in general temperatures will fall
from Sunday into Monday. Strong mixing on the backside of the
front will lead to gusty winds from Sunday night into Monday.

With a low level jet of up to 60kts there is some potential for
strong wind gusts, especially over the waters through Monday
afternoon.

Aviation 22z Wednesday through Monday
Short term... Ifr lifr ceilings vsby develop this evening from
southwest to northeast. BecomingVFR downwind of the mountains
by Thursday afternoon with areas of MVFR ceilings vsby in the
north.VFR Thursday night.

Long term... High pressure on Friday and Saturday will maintain
vfr conditions across the region. Low pressure approaching will
lower conditions to MVFR and then ifr as mixed precipitation
moves into the region on Sunday. Expect ifr to continue with
snow north and snow shifting to sleet and rain in the south. A
cold front will cross the region late Sunday or early Monday
with increasing westerly winds and improving ceilings.

Marine
Short term... Have issued sca's for late tonight through Thursday
night.

Long term... High pressure will cross the region from Friday into
Saturday. Low pressure will pass northwest of the waters on
Sunday brining widespread rain. A cold front will cross the
waters late Sunday into Monday bringing strong west
northwesterly winds with gale force likely and a few gusts to
storm force possible.

Tides coastal flooding
Storm surge of around a half foot will combine with high
astronomical tides on Thursday to produce minor coastal flooding
and splash-over at the time of high tide which occurs around
noon. A coastal flood advisory is in effect from 10 am to 200 pm
Thursday for coastal new hampshire and southwest maine.

Gyx watches warnings advisories
Me... Winter weather advisory from 11 pm this evening to noon est
Thursday for mez007>009-012>014-018>028.

Coastal flood advisory from 10 am to 2 pm est Thursday for
mez023-024.

Nh... Winter weather advisory from 8 pm this evening to 10 am est
Thursday for nhz001>015.

Coastal flood advisory from 10 am to 2 pm est Thursday for
nhz014.

Marine... Small craft advisory from 3 am Thursday to 7 am est Friday for
anz150-152-154.

Near term... Hanes
short term... Curtis
long term... Sinsabaugh


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 10 mi70 min WSW 2.9 28°F 1032 hPa5°F
WELM1 - 8419317 - Wells, ME 18 mi37 min SW 2.9 G 4.1 28°F 35°F1030.7 hPa
WEXM1 - Wells Reserve, ME 19 mi55 min SW 2.9 28°F 3°F
IOSN3 - Isle of Shoals, NH 21 mi55 min WSW 7 G 8.9 28°F 1030.9 hPa (-2.0)4°F
44030 - Buoy B0102 - Western Maine Shelf 24 mi111 min SW 5.8 G 7.8 26°F 38°F1 ft1031.3 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 45 mi65 min SSW 5.8 G 9.7 26°F 36°F1 ft1031.2 hPa (-1.5)8°F
44098 - Jeffrey's Ledge, NH (160) 46 mi77 min 40°F1 ft
CASM1 - 8418150 - Portland, ME 46 mi43 min 26°F 34°F
44029 - Buoy A0102 - Mass. Bay/Stellwagen 49 mi111 min WSW 7.8 G 9.7 28°F 37°F1 ft1031.2 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester - Skyhaven Airport, NH6 mi64 minVar 410.00 miFair27°F3°F37%1030.3 hPa
Pease Air Force Base / Portsmouth, NH8 mi59 minWSW 310.00 miOvercast28°F1°F32%1030.8 hPa
Sanford, Sanford Regional Airport, ME16 mi59 minSW 310.00 miA Few Clouds27°F6°F41%1031.2 hPa

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Last 24hrNW17NW10
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NW75CalmW4W5443W3NW5NW4CalmCalmCalmW4NW5CalmCalmCalm4Calm4
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2 days agoS4S3S3CalmCalmCalmCalmCalmCalmCalmCalmNE3N4N6N7N5NE6N7N7N9N6N5NW9N7

Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
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Wed -- 12:37 AM EST     7.81 feet High Tide
Wed -- 06:34 AM EST     Sunrise
Wed -- 06:54 AM EST     -0.95 feet Low Tide
Wed -- 07:25 AM EST     Moonset
Wed -- 12:53 PM EST     8.73 feet High Tide
Wed -- 05:20 PM EST     Sunset
Wed -- 06:46 PM EST     Moonrise
Wed -- 07:30 PM EST     -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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7.67.76.95.230.9-0.5-0.9-0.21.74.26.68.28.78.16.54.21.7-0.3-1.4-1.3-0.12.14.7

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
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Wed -- 12:48 AM EST     -0.00 knots Slack
Wed -- 03:34 AM EST     -2.29 knots Max Ebb
Wed -- 06:33 AM EST     Sunrise
Wed -- 07:12 AM EST     0.00 knots Slack
Wed -- 07:25 AM EST     Moonset
Wed -- 09:27 AM EST     1.81 knots Max Flood
Wed -- 01:05 PM EST     -0.00 knots Slack
Wed -- 04:01 PM EST     -2.61 knots Max Ebb
Wed -- 05:20 PM EST     Sunset
Wed -- 06:46 PM EST     Moonrise
Wed -- 07:47 PM EST     0.00 knots Slack
Wed -- 09:59 PM EST     1.76 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.7-0.2-1.4-2.2-2.2-1.9-1.3-0.311.71.71.30.90.1-1.1-2.2-2.6-2.4-1.9-10.31.41.81.5

Weather Map and Satellite Images
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GOES 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 (16,3,4,5)
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Ground Weather Radar Station Portland, ME
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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.