Thursday, July2, 2020
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Marine Weather and Tides
La Parguera comunidad, PR

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:54AMSunset 7:08PM Thursday July 2, 2020 2:48 PM AST (18:48 UTC) Moonrise 4:52PMMoonset 3:28AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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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AMZ745 Coastal Waters Of Southwestern Puerto Rico Out 10 Nm- 1024 Am Ast Thu Jul 2 2020
.small craft should exercise caution...
Rest of today..Southeast winds 15 to 20 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers through the day.
Tonight..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds.
Friday..Southeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds.
Friday night..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds.
Saturday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers.
Sunday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 1024 Am Ast Thu Jul 2 2020
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure will induce a generally moderate easterly wind flow for the next few days. Local effects will cause winds to peak higher at times, resulting in locally choppy marine conditions. Passing showers may stream across the waters from time- to-time.


7 Day Forecast for Marine Location Near La Parguera comunidad, PR
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location: 17.97, -67.05     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 021442 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 1042 AM AST Thu Jul 2 2020

UPDATE. Since the tropical wave has already moved away and a slot of drier air along with Saharan dust began to move in, the intensity and areal coverage of showers and isolated thunderstorms is expected to be lower than previously forecasted. As a result, weather grids were adjusted to favor a more convective than advective weather pattern today, with the bulk of the activity focused over portions of the interior and northwestern Puerto Rico under a generally east to east-southeast steering flow this afternoon. Streamer-like showers developing from El Yunque and the local islands into the San Juan metro area and eastern Puerto Rico cannot be ruled out. This activity is expected to diminish by sunset, leaving mostly clear to partly cloudy skies. Thereafter, passing showers are forecast to move into eastern Puerto Rico and the US Virgin Islands as a patch of low-level moisture streams across the area. Overall, significant rainfall accumulations are not expected, particularly across the southern and eastern half of Puerto Rico nor the US Virgin Islands. Southeasterly flow will result in warmer than normal temperatures and heat index, particularly across coastal areas of southern and eastern Puerto Rico.

AVIATION. Mainly VFR conditions expected. However, SHRA and TSRA along with SCT-BKN at FL020-040 may result in brief MVFR conditions in TJBQ between 02/16-22Z. VSCH also expected at TJSJ between 02/16-22Z. Winds from the E-SE between 10-15 knots with higher gusts, turning light and variable after 02/23Z.

MARINE. Relatively tranquil marine conditions will prevail during the next few days. However, local effects may generate locally higher winds, resulting in locally choppy marine conditions. There is a moderate risk of rip currents for beaches along the north coast of Puerto Rico, as well as a few beaches in Culebra, Vieques and Saint Croix.

PREV DISCUSSION. /issued 332 AM AST Thu Jul 2 2020/

SYNOPSIS .

A tropical wave is causing unsettled weather across the local and regional waters. This activity will continue through the rest of the day, with showers and isolated thunderstorms developing across the interior and the western areas of Puerto Rico. Friday through the weekend, a dry Saharan air mass will encompass the region and cause relatively dry conditions.

SHORT TERM . Today through Saturday .

A weak tropical wave moving over the islands will continue to generate showers and thunderstorms through today. Early in the day, the activity will be focus over the U.S. Virgin Islands and eastern Puerto Rico. In the afternoon, convection is expected to develop over the interior and western Puerto Rico, and some showers will be possible over the San Juan metro area as well. Moderate to heavy showers are expected with this afternoon activity, with the potential for urban and small stream flooding. As the wave moves away by late Thursday, drier air is expected to filter in, limiting the potential for additional showers over the forecast area. Saharan dust is embedded in this air mass, so hazy skies are expected for the next several days. Additionally, a mid-level ridge is expected to build in over the western Atlantic Ocean, which should result in mainly fair weather conditions for the next few days. For Saturday, an easterly disturbance will move over the area, with precipitable water values forecast to increase to around 1.6 to 1.8 inches, which should result in another round of shower. Rainfall accumulations are not forecast to be significant due to unfavorable weather conditions aloft.

LONG TERM . Sunday through Friday .

Current guidance depicts a rather tranquil period with patches of moisture embedded in the easterly trades, weak tropical waves, and Saharan dust. The GFS shows a wave moving across the region during the afternoon on Monday, the wave moisture will aid in the development of showers and isolated thunderstorms across eastern Puerto Rico and the U.S Virgin Islands during the morning hours, followed by showers and isolated thunderstorms during afternoon over the interior and western areas of Puerto Rico. The tropical wave and its associated moisture are expected to be west of Puerto Rico by Tuesday morning.

Tuesday, The GFS shows a dry Saharan air mass filtering into the region from the east. The Saharan dust and mid-level ridge will inhibit the development of deep convection trough the middle of the week, however, locally and diurnally induced showers are expected to develop each day. The best potential for widespread rainfall will depend on the strength of the tropical waves, mid- level moisture and upper-level forcing. The GFS and EURO show weak tropical waves transversing the region every 3 to 4 days; this aligns with the calculated wave period of waves that move off of Africa.

AVIATION .

Mainly VFR conditions are expected to prevail across all terminals. VCSH are expected to affect all terminals, except western Puerto Rico through the early morning hours. VCTS are expected after 16Z for TJBQ, which could cause briefly MVFR conditions due to reduced VIS and ceilings. Winds will be out of the ESE at 10 to 15 knots.

MARINE .

Seas are choppy with wave heights up to 6 feet as a tropical wave continues to move through the local and regional waters. The wave will cause winds up 20 knots from the east- southeast. Late tonight seas and winds should subside with calmer conditions prevailing. A moderate risk of rip currents will remain for most north, south, and east facing beaches.

PRELIMINARY POINT TEMPS/POPS. SJU 90 79 91 79 / 30 20 30 20 STT 88 80 90 79 / 20 20 20 30

SJU WATCHES/WARNINGS/ADVISORIES. PR . None. VI . None. AM . None.

SHORT TERM . 99 LONG TERM . 99 PUBLIC DESK . 99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 0 mi49 min SSE 8 G 14 87°F 85°F1014.7 hPa (-0.9)
MGZP4 - 9759394 - Mayaguez, PR 18 mi49 min 89°F 86°F1015.1 hPa (-0.7)
42085 - Southeast of Ponce, PR 28 mi49 min E 14 G 16 85°F 85°F3 ft1013.8 hPa (-0.8)
PTRP4 29 mi44 min NE 6 G 12 89°F
41115 - Rincon, Puerto Rico (181) 31 mi23 min 86°F2 ft
JOXP4 - Jobos Bay Reserve, Puerto Rico 44 mi64 min E 8.9 90°F 1016 hPa75°F

Wind History for Magueyes Island, PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico
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Magueyes Island
Click for Map
Thu -- 03:27 AM AST     Moonset
Thu -- 05:56 AM AST     Sunrise
Thu -- 10:39 AM AST     -0.16 feet Low Tide
Thu -- 04:51 PM AST     Moonrise
Thu -- 07:07 PM AST     Sunset
Thu -- 09:36 PM AST     0.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.40.30.20.10-0.1-0.1-0.1-0.2-0.1-0.100.20.30.40.60.70.80.80.80.8

Tide / Current Tables for Guanica, Puerto Rico
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Guánica
Click for Map
Thu -- 03:03 AM AST     0.64 feet High Tide
Thu -- 03:26 AM AST     Moonset
Thu -- 05:56 AM AST     Sunrise
Thu -- 09:46 AM AST     -0.31 feet Low Tide
Thu -- 04:51 PM AST     Moonrise
Thu -- 07:07 PM AST     Sunset
Thu -- 08:44 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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Weather Map
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wmap_A
GEOS Local Image of Puerto Rico    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (14,3,4,5)
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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 numerous 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.