Sunday, February17, 2019 L-36.com


Marine Weather and Tides
Dorado, PR

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 6:50AMSunset 6:28PM Sunday February 17, 2019 10:47 PM AST (02:47 UTC) Moonrise 4:30PMMoonset 4:58AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 917 Pm Ast Sun Feb 17 2019
Rest of tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers through the night.
Monday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds.
Monday night..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds.
Tuesday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Tuesday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. Northwest swell 4 to 5 feet. Isolated showers.
Friday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell 4 to 6 feet. Isolated showers.
AMZ700 917 Pm Ast Sun Feb 17 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A moderate easterly wind flow will continue to prevail through Monday, becoming moderate to fresh from the east northeast by midweek as a surface high pressure builds across the western atlantic. A northerly swell is forecast to arrive across the local atlantic waters by Tuesday.


7 Day Forecast for Marine Location Near Dorado, PR
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location: 18.47, -66.29     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 180155 aaa
afdsju
area forecast discussion... Updated
national weather service san juan pr
955 pm ast Sun feb 17 2019

Update Updated grids with latest models, for some changes to
temperatures, winds and dew points. Dry conditions continue to be
expected so no real change to synoptic idea or discussions.

Aviation Vfr conditions expected to prevail thru 18 22z. Some mtn
tops likely obscured aft 18 16z. Isold shra ERN pr til 18 14z.

Isold shra WRN pr aft 18 18z. Sfc winds 10 kt or less til 18 14z.

Aft 18 14z sfc winds east 12 to 18 kt with hir gusts. Winds ne-e
up thru fl370. MAX wind ene 30-40 kt btwn fl210-340.

Marine Wind are set to increase tomorrow and will bring higher
seas with them. Conditions will become hazardous beginning Monday
night when small craft advisories are set to begin in the
caribbean waters. Expect wind 15 to 25 knots and seas of 5 to 7
feet there beginning Monday night. Conditions spread into the
atlantic on Tuesday and will continue through at least the end of
the week.

Prev discussion issued 425 pm ast Sun feb 17 2019
synopsis... A generally fair and mainly stable weather pattern
is expected to prevail across the local isles much of this week.

Short term... Tonight thru Tuesday...

a building mid to upper level ridge will continue to dominate the
local weather regime through the forecast cycle. This feature is
expected to erode the available moisture resulting in precipitable
water values below one inch by Monday. At lower levels, a surface
high pressure across the east central atlantic will yield easterly
winds through Monday, becoming more east northeast on Tuesday as
another surface high pressure builds north of the area. The local
pressure gradient is in fact expected to tighten as the surface
high builds north of the area and across the western atlantic.

Having said that, continue to expect fair and stable weather
conditions with limited shower activity each day.

Long term... Wed thru Mon issued 437 am ast Sun feb 17 2019
fair weather is expected to prevail in the long term forecast. Dry
airmass is expected to persist and only a few brief patches of
moisture are expected to move through, which may bring some brief
shower to the local area. The mid and upper levels will maintain a
stable atmosphere as well. Latest forecast soundings still
indicate a strong inversion and very dry mid levels, which is
consistent with the mid and upper level ridges and low
precipitable water values. East to east northeast winds of 15 to
20 mph are expected across the local waters and coastal areas. So
given the stable atmosphere, dry air, and breezy conditions,
mainly fair weather conditions are to be expected with moments of
brief showers during the night and morning hours. That said, the
marine conditions are expected to deteriorate starting midweek,
more on that in the marine section below.

Aviation...VFR conds at all terminals durg prd excpt for vcsh at
tjnr tjsj tjmz tjbq... Ovr coastal waters en route btw ERN pr and
northern leeward islands til 17 22z. Sfc wnds mainly fm E except for
sea breeze variations and ocnly hir gust... Bcmg lgt vrb aft 17 22z.

L lvl wnds mainly fm e-ne 5-15 kts blo fl200... Then backing and incr
w ht abv. No sig operational avn wx impacts attm.

Marine... Seas below small craft advisory criteria through midweek.

As a result, continue to expect seas 3 to 5 feet across the offshore
waters, ranging between 2 and 4 feet nearshore. Marine conditions
are expected to deteriorate by Wednesday with a northerly swell
and fresh east northeast winds.

Preliminary point temps pops
Sju 74 85 74 84 10 0 30 30
stt 73 85 73 85 10 0 20 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... Small craft advisory from 6 pm Monday to 6 pm ast Friday for
caribbean waters of puerto rico from 10 nm to 17n-mona
passage southward to 17n.

Short term... Ws
long term... .Om


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 9 mi36 min ESE 8 G 8.9 78°F 80°F1019.9 hPa
41053 - San Juan, PR 10 mi48 min E 12 G 14 79°F 79°F3 ft1018.7 hPa (+1.6)
AROP4 - 9757809 - Arecibo, PR 22 mi30 min SSE 4.1 G 5.1
JOXP4 - Jobos Bay Reserve, Puerto Rico 36 mi63 min NNW 1 76°F 1021 hPa69°F
YABP4 - 9754228 - Yabucoa Harbor, PR 38 mi30 min 79°F 72°F
42085 - Southeast of Ponce, PR 44 mi108 min E 12 G 14 80°F3 ft1018.1 hPa (+1.6)
41056 46 mi48 min E 9.7 G 12 79°F 80°F1018.7 hPa (+1.5)
MGZP4 - 9759394 - Mayaguez, PR 49 mi36 min 73°F 80°F1019.2 hPa

Wind History for San Juan, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR16 mi1.9 hrsSE 410.00 miFair78°F72°F82%1019.3 hPa

Wind History from JSJ (wind in knots)
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Last 24hrS4S3SE5CalmSE4CalmE3CalmSW3S3E3E34NE11NE17E12SE8E9E12E9E13E6SE4E3
1 day agoS4CalmSE3S4CalmS4S3S3E4SE3CalmSE8SE5SE8SE9SE8
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Tide / Current Tables for San Juan, Puerto Rico (3)
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San Juan
Click for Map
Sun -- 04:56 AM AST     Moonset
Sun -- 06:51 AM AST     Sunrise
Sun -- 07:21 AM AST     1.61 feet High Tide
Sun -- 01:50 PM AST     0.22 feet Low Tide
Sun -- 04:29 PM AST     Moonrise
Sun -- 06:25 PM AST     Sunset
Sun -- 06:30 PM AST     0.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.5-0.20.20.71.11.41.61.61.41.10.70.50.30.20.30.50.60.80.80.60.40-0.3

Tide / Current Tables for San Juan, Puerto Rico (2) (expired 1998-12-31)
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San Juan
Click for Map
Sun -- 04:56 AM AST     Moonset
Sun -- 06:51 AM AST     Sunrise
Sun -- 07:23 AM AST     1.60 feet High Tide
Sun -- 01:50 PM AST     0.21 feet Low Tide
Sun -- 04:29 PM AST     Moonrise
Sun -- 06:25 PM AST     Sunset
Sun -- 06:34 PM AST     0.78 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.5-0.20.20.61.11.41.61.61.41.10.70.40.30.20.30.50.60.80.80.60.40-0.3

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 (21,6,7,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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.