Sunday, April18, 2021
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Marine Weather and Tides
La Parguera, PR

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:07AMSunset 6:45PM Sunday April 18, 2021 5:18 PM AST (21:18 UTC) Moonrise 10:48AMMoonset 12:00AM Illumination 44% Phase: First Quarter Moon; Moon at 7 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- 349 Pm Ast Sun Apr 18 2021
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Monday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds.
Monday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds.
Tuesday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
AMZ700 349 Pm Ast Sun Apr 18 2021
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure over the central atlantic will continue to promote light to moderate east to southeast winds for the next several days. Improved marine conditions are expected to continue through at least early this week, but increasing winds will cause choppy seas across the offshore waters and local passages by midweek.


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


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 182016 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 416 PM AST Sun Apr 18 2021

SYNOPSIS . A surface high pressure over the central Atlantic will continue to promote light to moderate east to southeast winds for the next several days. Hazy skies due to the presence of suspended Saharan dust particulates are expected to continue through early this week. Above normal daytime temperatures are expected in general throughout the workweek with limited shower activity continuing across the islands.

SHORT TERM. Tonight through Tuesday .

The mid to upper level ridge continues to promote significantly dry stable weather aloft. GOES-16 water vapor channels shows subsidence related to the convergent side of the ridge right above the forecast area maintaining a very strong inversion cap evident around 850 mb as observed by the 18/12z sounding. Also, hazy skies continue to prevail over the area due to the presence of suspended Saharan dust particulates. At low levels, the surface high pressure over central Atlantic continues to promote breezy southeast winds over the region. Below normal precipitable water continues to persist with GOES-16 satellite imagery showing at or below 1.2 inches values throughout the day. This combination has limited any precipitation activity during afternoon hours with above normal daytime temperatures especially across coastal areas. As a matter of fact, today's high temperature of 93F at Luis Munoz Marin Airport broke the old record of 92F set in 2001. This pattern is expected to continue through Tuesday as the surface high pressure and upper level ridge slowly moves eastward during this period. However, patches of moisture embedded in the east southeast wind flow cannot be ruled out. Therefore, isolated shower activity are possible over the local waters from time-to- time and locally-induced shower development across portions of northwestern Puerto Rico each afternoon with no significant rainfall accumulations.

LONG TERM. Wednesday through Sunday .

FROM PREV DISCUSSION. /issued 305 AM AST Sun Apr 18 2021/

A mid level ridge will promote stable conditions and drier air intrusion through the end of the workweek. The ridge is forecast to move northeast of the Leeward islands by Friday, as a polar trough moves across the western Atlantic. At lower levels, a surface high over the central Atlantic will continue to promote east to southeast winds through Friday, with a slight increase in winds expected by midweek. Another surface high will enter the western Atlantic and move into the central Atlantic during the weekend, this will cause a more easterly wind flow across the region.

During the second part of the workweek, a few pulses of moisture carried by the trade winds will reach the region from the east, causing a slight increase in precipitable water content. In particular on Thursday and Friday, as the polar trough presses against the upper level ridge. Therefore, expect trade wind showers to move at times during the night time across the USVI and eastern sections of PR, followed by better chances for afternoon shower development over northwestern PR. The weekend looks similar, however, a drying trend is expected once again, and due to a more easterly trade wind flow, afternoon showers are expected to develop over the western interior and west coast of PR.

AVIATION. VFR conds expected through the forecast period. E-SE winds at around 10kt expected this afternoon with sea breeze variations. Hazy skies due to Saharan dust, but VIS should remain P6SM. Winds will decrease after 18/22Z, becoming light and variable at the terminals in PR. Winds will increase again to around 10-15kt after 19/13Z.

MARINE. A surface high pressure over the central Atlantic will promote moderate east to southeast winds for the next several days. Seas will continue to improve tonight through early in the week, before a small wind surge brings choppy seas across the offshore waters and passages by midweek. There is a moderate risk of rip currents for most of the northern and east facing beaches of the islands, and across the southwest coast of PR.

PRELIMINARY POINT TEMPS/POPS. SJU 75 89 76 89 / 20 20 10 20 STT 76 86 76 87 / 10 10 20 30

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

SHORT TERM . WS LONG TERM . CVB PUBLIC DESK . ICP


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 0 mi48 min SSE 7 G 12 85°F 83°F1015.8 hPa
MGZP4 - 9759394 - Mayaguez, PR 18 mi48 min 83°F 84°F1016.1 hPa
42085 - Southeast of Ponce, PR 28 mi138 min E 7.8 G 9.7 82°F 82°F3 ft1016.1 hPa (-1.3)
PTRP4 29 mi23 min N 5.1 G 8.9 83°F
41115 - Rincon, Puerto Rico (181) 31 mi52 min 82°F2 ft
JOXP4 - Jobos Bay Reserve, Puerto Rico 44 mi93 min ESE 7 86°F 1018 hPa72°F
MISP4 - 9759938 - Mona Island, PR 48 mi48 min 83°F 82°F1016.5 hPa

Wind History for Magueyes Island, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for TJMZ

Wind History from JMZ (wind in knots)
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1 day ago------------------------------------------------
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Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico (2)
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Magueyes Island
Click for Map
Sun -- 04:53 AM AST     0.73 feet High Tide
Sun -- 06:09 AM AST     Sunrise
Sun -- 10:48 AM AST     Moonrise
Sun -- 04:03 PM AST     0.08 feet Low Tide
Sun -- 06:45 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Guanica, Puerto Rico
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Guánica
Click for Map
Sun -- 03:33 AM AST     0.73 feet High Tide
Sun -- 06:08 AM AST     Sunrise
Sun -- 10:47 AM AST     Moonrise
Sun -- 04:13 PM AST     0.08 feet Low Tide
Sun -- 06:45 PM AST     Sunset
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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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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