Wednesday, July17, 2019 L-36.com


Marine Weather and Tides
Kittery Point, ME

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Sunrise 5:17AMSunset 8:21PM Wednesday July 17, 2019 4:54 AM EDT (08:54 UTC) Moonrise 9:05PMMoonset 5:48AM Illumination 100% Phase: Full Moon; Moon at 15 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- 330 Am Edt Wed Jul 17 2019
Today..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A slight chance of showers with isolated tstms this morning, then showers and tstms likely this afternoon. Some tstms may produce heavy rainfall this afternoon.
Tonight..W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Showers and tstms likely, mainly in the evening. Some tstms may produce gusty winds and heavy rainfall.
Thu..NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Thu night..E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers after midnight.
Fri..E winds around 5 kt, becoming S in the afternoon. Seas around 2 ft.
Fri night..SW winds around 10 kt. Seas 2 to 3 ft.
Sat..SW winds around 10 kt. Seas around 2 ft.
Sat night..W winds 5 to 10 kt. Seas around 2 ft.
Sun..SW winds 5 to 10 kt. Seas 1 foot or less.
Sun night..SW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. Winds and seas higher in and near tstms.
ANZ100 330 Am Edt Wed Jul 17 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front will settle into the area Wednesday and will be the focus for showers and Thunderstorms into the evening. High pressure will briefly build in from the north for Thursday. A series of frontal systems will cross the waters Friday and through the upcoming weekend. &&


7 Day Forecast for Marine Location Near Kittery Point CDP, ME
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location: 43.06, -70.7     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 170756
afdgyx
area forecast discussion
national weather service gray me
356 am edt Wed jul 17 2019

Synopsis
A warm humid airmass develops today and tonight, with a cold
front moving slowly south across the area. The front will
produce widespread showers and thunderstorms along with heavy
rainfall and the potential for localized flooding. High pressure
and drier air will briefly build in from the north for
Thursday. The heat and humidity along with unsettled conditions
will return for Friday and the upcoming weekend.

Near term until 6 pm this evening
A very humid airmass will move into place across the region making
for a wet day with scattered showers and thunderstorms.

Currently dewpoints are in the mid 60s across the region and
will rise to the low 70s by afternoon. Pwat will climb to near 2
inches. Water vapor imagery shows and short wave approaching
the region. This impulse is associated with shower activity
currently in new york which will move into western nh this
morning. These storms will produce small areas of heavy rain,
but should not be widespread enough to cause flooding.

As we move into the afternoon a cold front drops down
through the region from canada. This front will initiate another
round of showers along the quebec border. The placement of these
showers looks to be mainly north of the morning rainfall, keeping
the flooding threat to a minimum.

Meanwhile a warm front will advance into massachusetts. This leaves
our area sandwiched between two forcing mechanisms in a very moist
airmass. While the morning showers are not likely to produce
flooding, localized flash flooding becomes more likely through
afternoon as we see a second round of precipitation. The ma nh border
will be the focus of the heaviest rainfall, and flash flood guidance
in this area is around 2-3 inches, with lower values (closer to 1")
in the nashua-manchester corridor. This southern portion of the cwa
is thus the area of greatest concern. Have opted not to issue a
flash flood watch for two reasons. First, while rainrates will be
high, the storms themselves will be small and the area impacted will
also be small. Secondly the threat is mainly determined by where the
front sets up across massachusetts. It is possible this round of
showers may stay completely south of the forecast area.

Short term 6 pm this evening through 6 pm Thursday
Tonight the humidity will linger keeping overnight lows in the upper
60s to upper 50s across the region. For Thursday, the frontal
boundary will remain stalled to our south and again showers will
skirt along the ma nh border. Again, the humid airmass will be
in place making heavy rain possible however currently the rain
looks to stay south of us into mass. Thursday will be the
coolest day of the week as widespread cloud cover keeps
temperatures confined to the upper 70s.

Long term Thursday night through Tuesday
Oppressive and dangerous heat likely for the weekend...

the remnants of t.S. Barry will be passing by to our south in
westerly flow Thursday night into Friday morning. This will
bring cloud cover and showers to mainly southern nh and coastal
maine through the day, before moving into the atlantic ocean late
Thursday night.

Dew points jump into the mid 60s to lower 70s by Friday
afternoon with southwest flow bringing subtropical moisture
northward. This combined with 850mb temperatures in the 18-22
degree c range will make for an extremely warm weekend. A sea
breeze Friday will help knock down temperatures in the afternoon
along the coast, but expect highs in the mid to upper 80s over
most of maine and nh. Southern nh will see some lower 90s. All
this will result in heat indices in the mid 90s for portions of
southern nh and SW me... Likely resulting in a heat advisory.

On Saturday, temperatures will really get cooking ahead of a
southward moving cold front, with widespread mid to upper 90s.

Once again locations in southern nh, the connecticut river
valley, and southwest maine will be the warmest, with the
highest chances of hitting the century mark. Dew points will
also be a couple degrees higher. If this scenario holds true we
may end up issuing a heat watch warning as heat indices cross
the criteria of 105f for 2 hours. This would be a very dangerous
situation for the elderly without air conditioning and people
working outside.

Although there will be plenty of instability on Saturday, there
will be warmer air aloft which will cap it, at least
initially. Unidirectional shear vectors and an increasing llj
may just be enough where they intersect better CAPE for a strong
storm or two capable of producing gusty winds. This would be
primarily along the front, from the connecticut river valley
into portions of southwest nh where CAPE will be maximized.

Otherwise very high pwats and deep warm cloud depths point
towards torrential rain and the possibility of flash flooding as
the main threat.

A secondary cold front will follow quickly Sunday into Monday.

There may be a small area near the manchester nashua corridor
that could reach heat advisory Sunday. There will be a chance
of thunderstorms ahead of the second frontal passage on Sunday,
but there will be less instability and less shear available.

Heavy rain will remain a threat. Temperatures and moisture will
be greatly reduced on Monday with the passage of the second
front, with cloud cover and antecedent convection only leading
to weak showers. Building high pressure will bring a decreased
chance of showers Tuesday and Wednesday, with temperatures
moderating.

Aviation 08z Wednesday through Sunday
Short term through Wednesday night ... Showers and thunderstorms will affect all terminals
through the day today. Clouds will move in from the west this
morning but ceilings will remain largelyVFR, with brief
reductions to MVFR during the showers. Thunderstorms are
expected in two regions this afternoon - along the canadian
border and along the ma border
long term...VFR Friday with some MVFR ceilings on Saturday and
Sunday Monday morning as a couple of fronts move through the
region, bringing heavy rain and some thunderstorms.

Marine
Short term through Wednesday night ... Showers and thunderstorms
will cross the waters today as a front sags south through the
gulf of maine. The front will linger to the south of caches
ledge through Thursday.

Long term... No problems noted.

Climate
A final note: on Friday and Saturday highs are in danger of
being broken in concord (95f and 98f respectively), and on
Saturday for portland (96f). Friday through the weekend
overnight "high lows" are in danger of being broken at portland,
where they are as follows: 70f on the 20th set in 2013, 1991,
and 1949, and 72f on the 21st set in 2011. In concord, high low
records are: 72f in 1975 for the 20th, and 74f in 1876.

Equipment
The concord, nh ASOS remains out of service. At this time a
return to service date is unknown. During the outage, tafs will
continue to be issued for concord without amendments scheduled.

Climate data for concord will also be affected, although backup
sources may be used to fill in data after the fact.

The sugarloaf nwr transmitter is off the air until further
notice. This will be an extended outage as the tower, which was
severely damaged in a winter storm, is rebuilt.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 7 mi69 min Calm 70°F 1012 hPa67°F
IOSN3 - Isle of Shoals, NH 8 mi54 min SW 16 G 16 76°F 1011.4 hPa (-1.1)68°F
44030 - Buoy B0102 - Western Maine Shelf 17 mi110 min SW 9.7 G 12 69°F 66°F1 ft1011.9 hPa
WELM1 - 8419317 - Wells, ME 19 mi60 min SSE 1.9 G 5.1 71°F 61°F1011.9 hPa
WEXM1 - Wells Reserve, ME 21 mi54 min S 1 67°F 65°F
44098 - Jeffrey's Ledge, NH (160) 34 mi46 min 67°F2 ft
44029 - Buoy A0102 - Mass. Bay/Stellwagen 38 mi110 min SW 12 G 14 71°F 67°F2 ft1012.6 hPa
44007 - PORTLAND 12 NM Southeast of Portland,ME 44 mi64 min SSW 7.8 G 9.7 65°F 61°F2 ft1011.2 hPa (-0.9)64°F
CASM1 - 8418150 - Portland, ME 48 mi60 min 70°F 60°F
44013 - BOSTON 16 NM East of Boston, MA 49 mi64 min SSW 14 G 16 73°F 70°F1 ft1011.8 hPa (-1.1)70°F

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pease Air Force Base / Portsmouth, NH7 mi58 minWSW 510.00 miPartly Cloudy74°F65°F76%1011.7 hPa
Rochester - Skyhaven Airport, NH19 mi63 minN 010.00 miFair68°F64°F90%1011.6 hPa
Sanford, Sanford Regional Airport, ME23 mi58 minN 010.00 miFair70°F66°F87%1012.2 hPa

Wind History from PSM (wind in knots)
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Last 24hrCalmW3W3CalmCalmSW3SW4SW4SW7SW4SW7W5SW4SW5SW4S4S4SE6SW6SW3SW4SW5SW5SW5
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Tide / Current Tables for Gerrish Island, Portsmouth Harbor, New Hampshire
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Gerrish Island
Click for Map
Wed -- 05:18 AM EDT     Sunrise
Wed -- 05:48 AM EDT     Moonset
Wed -- 06:18 AM EDT     -0.20 feet Low Tide
Wed -- 12:33 PM EDT     8.52 feet High Tide
Wed -- 06:21 PM EDT     0.90 feet Low Tide
Wed -- 08:18 PM EDT     Sunset
Wed -- 09:04 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

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9.797.34.92.50.7-0.10.11.43.55.67.48.48.47.45.63.51.811.12.34.36.68.4

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
Click for Map
Wed -- 01:35 AM EDT     -0.00 knots Slack
Wed -- 04:35 AM EDT     -1.97 knots Max Ebb
Wed -- 05:18 AM EDT     Sunrise
Wed -- 05:48 AM EDT     Moonset
Wed -- 08:25 AM EDT     0.00 knots Slack
Wed -- 10:19 AM EDT     0.92 knots Max Flood
Wed -- 11:35 AM EDT     0.87 knots Min Flood
Wed -- 12:04 PM EDT     0.87 knots Max Flood
Wed -- 02:08 PM EDT     -0.00 knots Slack
Wed -- 04:43 PM EDT     -1.57 knots Max Ebb
Wed -- 08:18 PM EDT     Sunset
Wed -- 08:25 PM EDT     0.00 knots Slack
Wed -- 09:04 PM EDT     Moonrise
Wed -- 10:23 PM EDT     1.14 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.5-0.4-1.4-1.9-2-1.8-1.4-0.40.50.90.90.90.70.1-0.8-1.5-1.6-1.4-1.1-0.40.51.11.1

Weather Map and Satellite Images
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GOES 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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Wind Forecast for Gray/Portland, ME (4,6,7,8)
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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.