Sunday, April18, 2021
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Marine Weather and Tides
Sabana Eneas, 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 6:08AMSunset 6:47PM Sunday April 18, 2021 4:13 PM AST (20:13 UTC) Moonrise 10:48AMMoonset 12:00AM Illumination 43% 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 Sabana Eneas, PR
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location: 18.08, -67.1     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 181519 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 1119 AM AST Sun Apr 18 2021

UPDATE. Fair weather with hazy skies have prevailed over the local area. The Saharan Dust is expected to maintain hazy conditions for the rest of today and into early the upcoming workweek. Light southeasterly winds have allowed the sea breeze to develop along the coasts. The satellite imagery shows some cloudiness developing and moving downwind the the mountainous areas of the USVI and eastern PR, and some sea breeze convergence occurring across NW-PR. However, mainly fair weather is expected, with a chance of brief showers across NW-PR. The daytime high temperatures are expected to be in the low 90s across the lower elevations and in the 80s across the higher elevations.

AVIATION. VFR conds expected through the forecast period. E-SE winds at around 10kt expected today 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.

MARINE. Slight chop in the seas expected today with moderate winds. The local seas will be up to 5 feet and winds mainly up to 15 knots. However, winds could be up to 20 knots across the Atlantic Coastal waters of PR. Seas will improve slightly tonight and tomorrow.

PREV DISCUSSION. /issued 305 AM 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. Locally higher winds due to the sea breeze are expected across the northern and southern coastal areas of PR. Hazy skies due to a Saharan Air Layer are expected to continue through early next week. Above normal daytime temperatures are expected in general through next week. Limited shower activity will continue across the islands through next week.

SHORT TERM . Today through Tuesday . The eastern Caribbean is still under the influence of a mid level ridge, and a surface high pressure extending from the western to the central Atlantic. This will continue to generate an east-southeast wind flow through early in the workweek. The Total Precipitable Water product, derived from GOES-16, indicates that an even drier air mass is making its way into Puerto Rico and the U.S. Virgin Islands, with values around 1.2 inches. In fact, the GFS forecast soundings are showing that these dry conditions at the low and mid levels should persist at least through Tuesday, with a trade wind cap inversion evident around 900 to 850 mb. As a result, mainly fair weather is expected to prevail. There is a chance that isolated to scattered showers may develop over northwestern Puerto Rico each afternoon, due to local effects, but without leaving significant rainfall accumulation. Additionally, this dry air mass contains Saharan dust, hence skies will stay hazy through Tuesday as well. Under the influence of the mid-level ridge and the southeasterly wind flow, temperatures will stay on the warm side, with maximum temperatures as high as the low 90s over coastal elevations across the islands.

LONG TERM . Wednesday through Sunday . 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 conditions expected to prevail across all terminals. Skies remain hazy due to Saharan dust, but VIS will remain at P6SM. VCSH may form after 18/18Z across TJBQ, which could lead to brief MVFR conditions. Winds will be out of the ESE at 5-12 knots at FL050, with sea breeze variations and stronger gusts.

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 through early in the week, before a small wind surge brings choppy seas across the offshore waters and passages by midweek. A north swell around 4 feet will continue across the local Atlantic waters and passages today. This will cause 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 91 75 89 76 / 10 20 20 10 STT 87 76 86 76 / 10 10 10 20

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

SHORT TERM . JA LONG TERM . JA PUBLIC DESK . TW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 8 mi55 min SSE 8.9 G 14 85°F 82°F1016.3 hPa
MGZP4 - 9759394 - Mayaguez, PR 10 mi55 min 83°F 83°F1016.7 hPa
PTRP4 21 mi28 min N 4.1 G 8 85°F
41115 - Rincon, Puerto Rico (181) 23 mi47 min 82°F3 ft
42085 - Southeast of Ponce, PR 33 mi193 min E 7.8 G 9.7 82°F 82°F3 ft1017.2 hPa
MISP4 - 9759938 - Mona Island, PR 44 mi55 min 85°F 82°F1016.7 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 47 mi88 min ESE 7 87°F 1018 hPa73°F

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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Last 24hr----------------------------------------E6E5E8E9
1 day ago------------------------------------------------
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Tide / Current Tables for Puerto Real, Puerto Rico
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Puerto Real
Click for Map
Sun -- 12:50 AM AST     1.00 feet High Tide
Sun -- 06:09 AM AST     Sunrise
Sun -- 07:50 AM AST     0.31 feet Low Tide
Sun -- 10:48 AM AST     Moonrise
Sun -- 11:55 AM AST     0.47 feet High Tide
Sun -- 06:13 PM AST     -0.02 feet Low Tide
Sun -- 06:46 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1110.80.70.50.40.30.30.30.40.40.50.40.40.30.10-000.10.30.50.7

Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico
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Magueyes Island
Click for Map
Sun -- 03:36 AM AST     0.51 feet High Tide
Sun -- 06:09 AM AST     Sunrise
Sun -- 10:48 AM AST     Moonrise
Sun -- 03:15 PM AST     -0.26 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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