Friday, March5, 2021
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Marine Weather and Tides
Daguao, 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 6:37AMSunset 6:30PM Friday March 5, 2021 9:19 PM AST (01:19 UTC) Moonrise 12:03AMMoonset 11:31AM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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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AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 412 Pm Ast Fri Mar 5 2021
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Saturday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds.
Sunday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Sunday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers.
Tuesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Scattered showers.
AMZ700 412 Pm Ast Fri Mar 5 2021
Synopsis for puerto rico and the uS. Virgin islands waters... Light to moderate east to southeast winds will prevail through the upcoming weekend with tranquil to slightly choppy seas. Isolated to scattered showers may affect portions of the local waters later this evening through Saturday as low-level moisture increases. A northerly swell will affect the atlantic waters early next week resulting once again in choppy to hazardous marine conditions.


7 Day Forecast for Marine Location Near Daguao, PR
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location: 18.19, -65.62     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 052053 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 453 PM AST Fri Mar 5 2021

SYNOPSIS. A moister air mass moving northward through Saturday will result in an increase in shower activity. However, no significant rainfall accumulations can be expected as these showers will dissipate quickly. Fair weather conditions return on Sunday, before transitioning to a wetter pattern by much of next week as low-level moisture increases.

SHORT TERM . Tonight through Sunday .

The TJSJ 12Z upper air sounding already showed a slight erosion of the trade wind cap by the mid to upper level trough moving eastward from the western Atlantic. However, stable air aloft has persisted throughout the day maintaining mainly fair weather conditions with relatively clear skies over the local area. At lower levels, the tropical wave and induced trough over eastern and western Caribbean, respectively, continues promoting a south southeast wind flow over the forecast area. An air mass with precipitable water contents between 1.5 to 1.7 inches located over the southern Caribbean is currently being advected northward by the induced southerly wind flow. Satellite imagery showed some of that moisture filtering in during early afternoon causing increased cloudiness and shower development aided by local effects over interior and northern portions of Puerto Rico, including the metropolitan area in the past couple of hours. Still mid to upper levels were not conducive for further convective development leading to a shorter duration of these showers with light to moderate rainfall accumulations. As the plume of moisture continues moving northwestward, expect an uptick of shower activity this evening and tomorrow. Latest Hi-res models are less bullish with precipitation than earlier runs, though still show the possibility of a few showers over the local waters, USVI and eastern Puerto Rico late tonight and tomorrow morning.

Afterwards, model guidance suggests the entrance of drier air from the east tomorrow afternoon as the moister air mass leaves the forecast area. This will restore the trade wind cap, however, lingering moisture along with locally induced effects will promote isolated to scattered showers to develop over interior and northwestern portions of Puerto Rico. For the rest of the weekend, expect mainly fair weather conditions with isolated showers over USVI and eastern Puerto Rico Saturday night and Sunday morning with a few showers moving over western portions of Puerto Rico during the afternoon. This shower activity will be of short duration with minor rainfall accumulations.

LONG TERM. Monday through Friday .

FROM PREV DISCUSSION. /issued 419 AM AST Fri Mar 5 2021/

A frontal boundary will be located to our northwest on Monday. This feature will drag some low-level moisture into the area with an increase in showers expected. Isolated to scattered showers are possible across portions of eastern Puerto Rico and the USVI during the morning hours followed by afternoon activity across western Puerto Rico. Low-level winds will then increase on Tuesday into Wednesday as a surface high pressure moves across the western Atlantic. This will result in a cool advective pattern, with trade wind shower activity expected at times. Then, towards the latter half of the week, the weather pattern will undergo changes aloft. Global models continue to remain consistent in showing a mid and upper-level trough developing and amplifying west of the area, over near Hispanola. This would put the area on the favorable side for upward vertical motion. If the global models are correct in their current solution, then a more unstable weather pattern can be expected towards the latter half of the week with enhanced shower activity possible across portions of the area.

AVIATION.

VFR conds expected. VCSH possible late this afternoon and tonight at TJBQ and TJSJ. Winds will be light, around 10kt or so from the SE with variations at TJSJ and TJBQ for the rest of today. Winds will decrease and become light and variable after 05/22Z. VCSH possible at TISX overnight. Winds will increase after 06/13Z but will be mainly easterly with sea breeze variations mainly at TJPS and TJBQ.

MARINE. Fairly tranquil marine conditions are expected to continue through the upcoming weekend with east to southeast winds up to 15 knots. For beachgoers, a high risk is in effect until this evening for North Central, San Juan and vicinity. A low to moderate risk is expected for the rest of the local beaches.

PRELIMINARY POINT TEMPS/POPS. SJU 74 87 72 87 / 10 10 30 30 STT 75 84 74 85 / 10 10 30 30

SJU WATCHES/WARNINGS/ADVISORIES. PR . High Rip Current Risk until 6 PM AST this evening for North Central-San Juan and Vicinity.

VI . None. AM . None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41056 10 mi79 min SSE 7.8 G 9.7 79°F 79°F2 ft
ESPP4 - 9752695 - Esperanza, PR 10 mi49 min SE 7 G 8.9 81°F1015.4 hPa
CLBP4 - 9752235 - Culebra, PR 19 mi49 min 79°F 82°F1015.1 hPa
41053 - San Juan, PR 32 mi79 min SSE 7.8 G 12 80°F 80°F3 ft1013.4 hPa (+1.4)
SJNP4 - 9755371 - San Juan, PR 32 mi49 min S 4.1 G 6 79°F 79°F1015 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 36 mi94 min E 2.9 79°F 1016 hPa71°F
41052 - South of St. John, Virgin Islands 46 mi79 min ESE 9.7 G 12 80°F 79°F3 ft1013.9 hPa (+1.1)
LAMV3 48 mi49 min 78°F 83°F

Wind History for Esperanza, Vieques Island, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR26 mi23 minSE 310.00 miA Few Clouds79°F70°F74%1015.2 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)
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Last 24hrS4CalmS3S4S3S5S4S5S4CalmSE6SE7S7CalmN7NE7N8N12NE83S6S5SE5SE3
1 day agoS4SW4S3CalmCalmCalmCalmCalmSW3CalmCalm4S6S5S8NE9NE12NE10SE5SE6S6S6S6S5
2 days agoNE8NE11E12E8SE3E8E6SE4E5SE4SE3E8E11E14E14
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Tide / Current Tables for Roosevelt Roads, Puerto Rico
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Roosevelt Roads
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Fri -- 12:03 AM AST     Moonrise
Fri -- 02:13 AM AST     0.98 feet High Tide
Fri -- 06:38 AM AST     Sunrise
Fri -- 09:02 AM AST     0.21 feet Low Tide
Fri -- 11:30 AM AST     Moonset
Fri -- 01:38 PM AST     0.54 feet High Tide
Fri -- 06:29 PM AST     Sunset
Fri -- 08:17 PM AST     -0.16 feet Low Tide
Fri -- 09:32 PM AST     Last Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.910.90.80.70.50.30.20.20.20.30.40.50.50.50.40.20-0.1-0.2-0.1-00.2

Tide / Current Tables for Vieques Passage, Puerto Rico Current (2)
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Vieques Passage
Click for Map
Fri -- 12:03 AM AST     Moonrise
Fri -- 12:04 AM AST     0.00 knots Slack
Fri -- 03:38 AM AST     0.89 knots Max Flood
Fri -- 06:38 AM AST     Sunrise
Fri -- 07:00 AM AST     -0.00 knots Slack
Fri -- 10:24 AM AST     -0.88 knots Max Ebb
Fri -- 11:30 AM AST     Moonset
Fri -- 02:11 PM AST     0.00 knots Slack
Fri -- 04:35 PM AST     0.41 knots Max Flood
Fri -- 06:29 PM AST     Sunset
Fri -- 07:09 PM AST     -0.00 knots Slack
Fri -- 09:32 PM AST     Last Quarter
Fri -- 10:10 PM AST     -0.52 knots Max Ebb
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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