Sunday, October22, 2017 L-36.com


Marine Weather and Tides
Woods Hole, MA

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 7:03AMSunset 5:52PM Sunday October 22, 2017 6:39 PM EDT (22:39 UTC) Moonrise 9:35AMMoonset 7:55PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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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ANZ234 Buzzards Bay- 402 Pm Edt Sun Oct 22 2017
.small craft advisory in effect from Tuesday morning through Tuesday afternoon...
Tonight..S winds around 5 kt. Seas 1 foot or less. Patchy fog after midnight with vsby 1 nm or less.
Mon..S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby 1 nm or less.
Mon night..S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Tue..S winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to 4 ft. Patchy fog. A chance of rain. Vsby 1 to 3 nm.
Tue night..S winds 15 to 20 kt with gusts up to 40 kt. Seas 3 to 4 ft. Rain.
Wed..S winds 20 to 25 kt with gusts up to 40 kt, diminishing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to 4 ft. Rain. Vsby 1 to 3 nm.
Wed night..SW winds 5 to 10 kt. Seas 2 to 3 ft. Rain. Vsby 1 to 3 nm.
Thu..W winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. Vsby 1 to 3 nm.
Thu night..W winds around 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri..W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Fri night..SW winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 402 Pm Edt Sun Oct 22 2017
Synopsis for massachusetts and rhode island coastal waters.. Strong high pressure will move east of new england today. A strong cold front approaches from the west late Tuesday, then lingers around the region into Thu. For information on possible hazardous weather beyond the 24-36 hour forecast period, please visit www.weather.gov/boston and follow the current hazards link above the map on the left.

7 Day Forecast for Marine Location Near Woods Hole, MA
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location: 41.53, -70.67     debug


Area Discussion for - Boston, MA
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Fxus61 kbox 222055
afdbox
area forecast discussion
national weather service taunton ma
455 pm edt Sun oct 22 2017

Synopsis
High pressure will push slowly offshore, but will keep
unseasonably mild and dry weather across the region into
Monday. A slow moving cold front will bring rounds of heavy rain
Tuesday into Wednesday with a period of strong to damaging wind
gusts possible. A few lingering showers are possible Thursday,
but the trend towards drier and more seasonable temperatures are
expected Thursday into Friday. Above normal temperatures may
return by next weekend.

Near term until 6 am Monday morning
While skies remained mainly clear except for a veil of high
clouds across the region, kept an eye on some low clouds that
pushed into coastal CAPE ann that pushed westward from the gulf
of maine as seen on goes-16 (prelim, non-operational data)
starting around midday and through the afternoon. The onshore
wind also helped in bringing the low level moisture to those
areas. Otherwise, as very pleasant day across the region as
temps rose t the mid 70s to around 80 except remaining in the
60s along the immediate E coast with the sea breezes.

For tonight, expect the sea breezes to end around or after
sunset. Winds will become light e-se during the night along the
shore, but will diminish to light variable or calm elsewhere.

With a continued e-ne flow just off the deck and low level
inversion set up at around 1000 ft or so as seen on 12z bufkit
soundings, will likely see low clouds and patchy fog develop
especially across central and E mass, ri into NE ct probably by
around midnight. Could see local visibility below 1 2 mile, so
will need to monitor for potential of locally dense fog at times
from around 2 am to 6 am.

The high will drift slowly E overnight, so winds will slowly
veer to S during the night as well. Expect temps to fall back to
the lower-mid 40s across NW mass where the lower clouds
should not push in, but could see some brief patchy light fog
for a few hours late tonight. Elsewhere, readings will bottom
out in the upper 40s and 50s, mildest along the immediate coast.

Short term 6 am Monday morning through Monday night
Monday...

expect the patchy fog to dissipate by around mid morning. Slow
but steadily increasing S winds around the western periphery of
the exiting high, along with the slow eastward approach of low
pressure out of the great lakes, will see clouds increase during
the day especially across western areas.

With the S wind flow in place, will see low level moisture
steadily increase as well. Some of the global and high res
models try to develop light precip ahead of the approaching
front, mainly across western areas. Should be a dry day for most
areas, but could see some spotty showers push into central and
western areas after 20z or so.

Will see another mild day by late october standards, though
about 10 degrees cooler in some areas than today. Highs will
range from the mid 60s across the higher inland terrain to the
mid 70s across the coastal plain away from the coast.

Monday night...

with the southern inflow as well as increasing pwats (up to 1.3
to 1.5 inches after midnight Mon night), will see precip become
more organized well ahead of the approaching front. Noting
strong winds just off the ground, with 35-40 kt jet from h925 to
h85 pushing across the region. However, low level mixing is not
the greatest with low level inversion in place, but could see
some S wind gusts up to around 20-25 kt after midnight along s
coastal areas. Will also see area of showers fill in especially
across the ct valley where up to 0.2 inches of precip is
possible by daybreak Tuesday. Heavier precip looks to hold off
until Tuesday.

With the mild S winds in place, temps will not fall back much.

Lows will range from 55 to 60, though a bit milder along the
immediate coast.

Long term Tuesday through Sunday
Highlights...

* period of strong to damaging wind gusts possible Tue into wed
am
* heavy rain will result in an urban street flooding threat
tue-wed
* more seasonable late october temps finally return Thu fri
overview and model preferences...

strong and acute blocking high pres now looks to cutoff
completely near labrador based on 22.12z guidance. This promotes
deepening, and redevelopment of upstream longwave trof cutoff
across the conus, yielding a highly meridional flow pattern
through much of the week. The first longwave trof begins
negative tilt process through Wednesday, and is progged to be a
bit closer to the downstream ridge. The trof is linked to
gradually occluding low pres which will slide into canada but
drag a slow moving front into new england through mid week,
coupled with gulf of mexico moisture. Lifting N late week thanks
to a slight resurgence of the subtropical high, a second trof,
deepens in response to arctic influenced phasing near the
continental divide. With blocking remaining firmly entrenched
across the W atlantic, this second trof deepens in place through
the weekend. Overall, a complex pattern with some disagreements
in the mass fields particularly beyond wed. Will continue to
lean most heavily on the ensembles at this time, although with a
little weight on the ECMWF given its overall slower progression
which is favorable in such an amplified pattern.

Details...

tue and wed...

met. Overview...

slow cold front becomes parallel to upper flow as trof takes on
negative tilt near the oh valley and parent low pres moves into
quebec. Guidance continues to favor the front slowly drifting
across the region Tue into wed. This front will be associated
with very deep layer moisture, with pwats near the 2.00 inch
mark, or nearly 3 std deviations above normal. A series of weak
llj impulses will also traverse the front. Mean h92 S wind
speeds rest mainly around 40 kt, however, with each impulse
50-60 kt are also forecast, especially early Wed as the front
shifts e. The increase in low lvl moisture and anomalously warm
airmass associated with the high downstream (temps mainly in the
upper 60s to low 70s by day) combined with dwpts in the mid-
upper 60s as well and a conditionally unstable profile, do
indicate some modest CAPE values near 500j kg especially late
tue into early wed. All ingredients point to a wet and highly
unsettled environment. It is interesting to note that both
ensemble probabilities, and latest runs of the cips analogs
support heavy rain and strong winds as has been advertised.

Wind risk...

with 40-45 kt steady and impulses reaching near 60 kt at h92 as
modest bl destabilization occurs late Tue into early wed, at
least some of this momentum is expected to reach the sfc. The
peak will be along E ma coastal plain, as the jet increases
early Wed morning across this area. 35-45 mph gusts are
possible, potentially as far inland as the worcester hills and
central ct, with gusts 50+ mph possible overnight Tue night into
wed mainly in the coastal plain mentioned above. Will need to
especially monitor the potential for a fine convective line
along the frontal boundary as this could more efficiently yield
the strong-damaging gusts. With leaves still on most trees, this
will exacerbate the risk for downed limbs or even some trees
with localized power outages. Wind headlines will likely be
needed. This risk coincides with the latest SPC swody3.

Heavy rain...

with very high pwats, a strong frontal boundary and llj,
combined with modest instability, pockets of convectively driven
heavy rain is possible. Widespread shield of light-mod rain
begins early tue, but pockets of rainfall with 1+ inch hr
rainfall rates are likely late Tue into early Wed as the front
gradually shifts e. Any thunderstorms will enhance these
rainfall rates. Given the winds, some stripped leaves could clog
area storm drains as well, exacerbating issues with the
rainfall. At this time, the primary risk will be pockets of
urban poor drainage flooding. Overall totals above 2.00 inches
are looking more likely given good agreement on GEFS eps and
cips. However, with the potential for high rainfall rates
locally, some areas of 3-4 inches cannot be ruled out.

Thu...

transitional day as secondary frontal wave is able to shift n
of the region, allowing for mid-upper lvl dry slot to begin to
shift in from the s. This is likely to trap some lower lvl
moisture, given pwats remain elevated. Therefore, risk for
drizzle and continued shra activity through the day on Thu even
as heavier precip shield shifts into N new england. Pops will
gradually decline because of this. The introduction of colder
air within the trof lifting nne will allow temps to drop closer
to seasonal normals, mainly the upper 50s and low 60s as drier
air slowly mixes to the sfc. Dwpts drop through the day as well.

Fri through the weekend...

weak mid lvl ridging replaces the tilted trof as its axis
shifts well nne of S new england. High pres 1020+ hpa shifts
over Fri into the weekend with drier air expected. The cool
airmass is short lived however as h92 temps warm to +9c on fri,
then +12c by Sat and sun. This suggests temps remain generally
above normal for highs with near normal lows thanks to
radiational cooling. Regarding the influence of the secondary
longwave trof developing late week, the highly meridional
pattern favors a slower progression than the current GFS cmc and
some ensemble members suggest. Will lean on a slower drier
period through the weekend based on other guidance sources than
those listed previously.

Aviation 21z Sunday through Friday
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday night ... .

Through 00z... High confidence.

Sea breezes along the immediate coast will tend to break down
after sunset, though will still see light e-se winds through
00z. MainlyVFR conditions, though noting low stratus clouds
down to 1000 ft across portions of CAPE ann which will continue.

Tonight... Moderate confidence.

Should remain mainlyVFR through around midnight, though may
see ifr conditions move into CAPE ann as early as around 9 pm
to 10 pm. Conditions will likely lower to MVFR-ifr in patchy
fog and areas of low clouds generally across central and E mass
into ri and portions of N ct, mainly around or after midnight.

May see brief isolated MVFR-ifr conditions in portions of the ct
valley around 09z or so. Light variable or calm winds.

Monday... High confidence.

Early morning fog and low clouds with MVFR-ifr conditions
should improve toVFR by around 15z. However, MVFR CIGS may push
into western ma N central ct during the afternoon. May see
isolated showers move into western areas after 18z. S winds
increase to around 10 kt.

Monday night... Moderate confidence.

Conditions lower to MVFR-ifr across N central and western areas
mon evening in scattered showers and patchy fog.VFR conditions
to start across S central and eastern areas, but CIGS lower to
MVFR to local ifr mainly after midnight as showers slowly move
e. Patchy fog will lower vsbys to MVFR to local ifr as well. S
winds gusting to 20-25 kt along S coastal areas after midnight.

Kbos terminal... Moderate to high confidence in taf. ExpectVFR
conditions through around 02z-03z. MVFR-ifr CIGS vsbys move into
terminal by around 04z-05z, continuing through the morning
push, then should improve by around mid morning Monday.

Kbdl terminal... High confidence in taf. MainlyVFR. May see
brief MVFR-ifr vsbys in patchy fog after 06z or so but should
improve by morning push. CIGS may lower to MVFR around midday
Monday.

Outlook Tuesday through Friday ...

tue and wed... High confidence.

Mainly ifr with occasional MVFR in low CIGS rain fog. Some
occasional TS also possible with heavy ra at times. Winds gust
20-30 kt most of the region out of the s-se with a few gusts
30-40 kt mainly SE ma CAPE islands. Cannot rule out stronger
gusts everywhere in heavier rainfall thunderstorms. Llws likely,
with winds as high as 50 kt at 2kft.

Thu... Moderate confidence.

Gradual improvement as winds shift to the west and diminish.

Some lingering shra and ifr MVFR conditions but with improvement
toVFR into the overnight hours.

Fri... High confidence.

MainlyVFR.

Marine
Forecaster confidence levels...

low - less than 30 percent.

Moderate - 30 to 60 percent.

High - greater than 60 percent.

Short term through Monday night ...

through 00z... High confidence.

Sea breezes along the immediate coast will tend to break down
after sunset, though will still see light e-se winds through
00z. MainlyVFR conditions, though noting low stratus clouds
down to 1000 ft across portions of CAPE ann which will continue.

Tonight... Moderate confidence.

Should remain mainlyVFR through around midnight, though may
see ifr conditions move into CAPE ann as early as around 9 pm to
10 pm. Conditions will likely lower to MVFR-ifr in patchy fog
and areas of low clouds generally across central and E mass into
ri and portions of N ct, mainly around or after midnight. May
see brief isolated MVFR-ifr conditions in portions of the ct
valley around 09z or so. Light variable or calm winds.

Monday... High confidence.

Early morning fog and low clouds with MVFR-ifr conditions
should improve toVFR by around 15z. However, MVFR CIGS may
push into western ma N central ct during the afternoon. May see
isolated showers move into western areas after 18z. S winds
increase to around 10 kt.

Monday night... Moderate confidence.

Conditions lower to MVFR-ifr across N central and western areas
mon evening in scattered showers and patchy fog.VFR conditions
to start across S central and eastern areas, but CIGS lower to
MVFR to local ifr mainly after midnight as showers slowly move
e. Patchy fog will lower vsbys to MVFR to local ifr as well. S
winds gusting to 20-25 kt along S coastal areas after midnight.

Kbos terminal... Moderate to high confidence in taf. ExpectVFR
conditions through around 02z-03z. MVFR-ifr CIGS vsbys move into
terminal by around 04z-05z, continuing through the morning push,
then should improve by around mid morning Monday.

Kbdl terminal... High confidence in taf. MainlyVFR. May see brief
MVFR-ifr vsbys in patchy fog after 06z or so but should improve by
morning push. CIGS may lower to MVFR around midday Monday.

Outlook Tuesday through Friday ...

tue and wed... High confidence. S-se gales developing through
the day Tue and continuing into the early half of the day on
wed. Wind gusts up to 40 kt, with a few gusts higher possible at
times. Seas build to 12-14 ft on the SE outer waters. Rain, fog
and occasional thunderstorms possible. Overall, dangerous
boating conditions.

Thu and fri... High confidence.

Winds shift to the w, and gradually diminish although gusts to
20 kt possible both Thu and Fri afternoon. Seas will take a long
time to diminish with a lingering swell, and may require small
crafts on the outer waters at least well into fri. Otherwise
improving weather, with dry conditions overall by fri.

Fire weather
While minimum rh values were at 25 to 35 percent across central
and western areas today, winds were either light e-ne or calm
with the lower winds where the lower relative humidities
occurred.

This should be the last day of potential fire weather issues.

Winds become south on Monday with some gusts up to 15-20 mph as
a frontal system slowly approaches. This will bring higher rh
values across the region. Forecasted minimum rh values will be
from 60 to 75 percent on Monday. A few showers may also move
into the connecticut river valley region into NE ct during
Monday afternoon as well. This means that there will be a low
red flag warning threat.

Box watches warnings advisories
Ct... None.

Ma... None.

Ri... None.

Marine... Small craft advisory from 6 am to 6 pm edt Tuesday for
anz231>234-236.

Small craft advisory from 8 am to 6 pm edt Tuesday for anz230-
251.

Small craft advisory from 2 am to 6 pm edt Tuesday for anz235-
237.

Small craft advisory from 4 am to 6 pm edt Tuesday for anz250-
254.

Small craft advisory from 11 pm Monday to 6 pm edt Tuesday for
anz255-256.

Synopsis... Doody evt
near term... Evt
short term... Evt
long term... Doody
aviation... Doody evt
marine... Doody evt
fire weather... Evt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BZBM3 - 8447930 - Woods Hole, MA 0 mi52 min 63°F 64°F1029 hPa
WAXM3 - Waquoit Bay Reserve, MA 8 mi115 min Calm 68°F 1029 hPa59°F
BUZM3 - Buzzards Bay, MA 21 mi40 min SW 8 G 8 63°F 1029.2 hPa (+0.0)
44020 - NANTUCKET SOUND 26 mi50 min SSW 5.8 G 7.8 62°F 62°F1029.1 hPa (+0.0)62°F
44090 28 mi40 min 61°F
FRVM3 - 8447386 - Fall River, MA 29 mi52 min 68°F 64°F1029.2 hPa
FRXM3 29 mi52 min 66°F 52°F
BLTM3 - 8447387 - Borden Flats Light at Fall River, MA 29 mi52 min S 2.9 G 4.1 69°F 1027.7 hPa
PRUR1 34 mi52 min 65°F 59°F
NTKM3 - 8449130 - Nantucket Island, MA 35 mi52 min SSW 2.9 G 5.1 62°F 62°F1029.6 hPa
NWPR1 - 8452660 - Newport, RI 35 mi52 min S 7 G 8 65°F 63°F1028.3 hPa
NAXR1 - Narragansett Bay Reserve, RI 36 mi115 min SSW 4.1 68°F 1005 hPa54°F
PTCR1 - 8452951 - Potter Cove, Prudence Island, RI 36 mi52 min SW 2.9 G 5.1 1028.3 hPa
CPTR1 - 8452944 - Conimicut Light, RI 38 mi52 min SSE 8.9 G 8.9 1028.1 hPa
QPTR1 - 8454049 - Quonset Point, RI 39 mi52 min SW 7 G 8 1028.4 hPa
PVDR1 42 mi52 min SSE 6 G 8 68°F 1028.3 hPa57°F
FOXR1 - 8454000 - Providence, RI 43 mi52 min S 6 G 8.9 67°F 63°F1027.9 hPa

Wind History for Borden Flats Light at Fall River, MA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marthas Vineyard Airport, MA9 mi47 minS 310.00 miA Few Clouds59°F59°F100%1029.2 hPa
Otis Air National Guard Base, MA12 mi65 minN 010.00 miFair64°F59°F83%1029.5 hPa
New Bedford, New Bedford Regional Airport, MA19 mi47 minS 410.00 miFair63°F57°F81%1028.5 hPa
Hyannis, Barnstable Municipal-Boardman Airport, MA23 mi44 minS 310.00 miFair63°F61°F93%1028.9 hPa

Wind History from MVY (wind in knots)
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Last 24hrSW5SW5SW6SW5SW5SW4SW4SW4SW5SW4CalmSW4SW3W3W3W4W3S5S6SW7S8S8SW6S3
1 day agoW5W6NW7NW5NW5NW4CalmCalmN6N4S3NW4CalmCalmCalmS5S7SW10SW9S11S11SW11SW8SW7
2 days agoSW11SW11
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Tide / Current Tables for Woods Hole Oceanographic Institute, Massachusetts
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Woods Hole Oceanographic Institute
Click for Map
Sun -- 04:16 AM EDT     0.52 feet Low Tide
Sun -- 07:03 AM EDT     Sunrise
Sun -- 09:34 AM EDT     Moonrise
Sun -- 10:31 AM EDT     2.47 feet High Tide
Sun -- 05:50 PM EDT     Sunset
Sun -- 05:53 PM EDT     0.41 feet Low Tide
Sun -- 07:55 PM EDT     Moonset
Sun -- 10:50 PM EDT     1.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.90.80.60.50.60.70.91.41.92.42.421.51.310.70.50.40.50.71.21.61.8

Tide / Current Tables for Quicks Hole (middle), Massachusetts Current
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Quicks Hole (middle)
Click for Map
Sun -- 12:59 AM EDT     -0.00 knots Slack
Sun -- 03:20 AM EDT     -2.34 knots Max Ebb
Sun -- 06:59 AM EDT     0.00 knots Slack
Sun -- 07:03 AM EDT     Sunrise
Sun -- 09:34 AM EDT     Moonrise
Sun -- 10:44 AM EDT     2.50 knots Max Flood
Sun -- 01:14 PM EDT     -0.00 knots Slack
Sun -- 03:39 PM EDT     -2.38 knots Max Ebb
Sun -- 05:51 PM EDT     Sunset
Sun -- 07:11 PM EDT     0.02 knots Slack
Sun -- 07:55 PM EDT     Moonset
Sun -- 11:08 PM EDT     2.52 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.1-0.1-1.8-2.3-2.2-1.8-1.201.522.42.52.21.1-1.6-2.3-2.4-2-1.4-0.41.31.92.32.5

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 Boston, MA (18,4,5,8)
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Ground Weather Radar Station Boston, MA
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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.