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Marine Weather and Tides
Version 3.4 |
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 6:43AM | Sunset 6:33PM | Monday March 1, 2021 9:23 PM AST (01:23 UTC) | Moonrise 9:03PM | Moonset 8:32AM | Illumination 89% |  |
AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 907 Pm Ast Mon Mar 1 2021
.small craft should exercise caution...
Rest of tonight..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds.
Tuesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers through the day.
Tuesday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the night.
Wednesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday 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.
Thursday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Friday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Numerous showers.
.small craft should exercise caution...
Rest of tonight..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds.
Tuesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers through the day.
Tuesday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the night.
Wednesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday 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.
Thursday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Friday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Numerous showers.
AMZ700 907 Pm Ast Mon Mar 1 2021
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure across the western atlantic ocean will continue to produce fresh to occasionally strong east northeast winds across the regional waters through tomorrow. This will continue to result in hazardous seas and small craft advisory conditions will last through Tuesday afternoon, and possibly longer for the outer atlantic waters. Only weak isolated showers are expected tonight and tomorrow.
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure across the western atlantic ocean will continue to produce fresh to occasionally strong east northeast winds across the regional waters through tomorrow. This will continue to result in hazardous seas and small craft advisory conditions will last through Tuesday afternoon, and possibly longer for the outer atlantic waters. Only weak isolated showers are expected tonight and tomorrow.
7 Day Forecast for Marine Location Near Santa Isabel, PR
Hourly EDIT Help
location: 17.98, -66.4 debug
Area Discussion for - San Juan, PR
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXCA62 TJSJ 020109 AFDSJU
Area Forecast Discussion National Weather Service San Juan PR 909 PM AST Mon Mar 1 2021
UPDATE. No change to the inherited short term forecast grids and reasoning at this time. Skies over land areas have become mostly clear to partly cloudy with no showers observed at this time. A few showers however continued over parts of the coastal waters with a some now approaching the north coastal areas of Puerto Rico carried by the northeasterly trades. Recent TJSJ 02/00Z upper air sounding was considerably drier with precipitable water down to .85 inches as a much drier airmass continued to filter in and the cap inversion continued to strengthen while trapping shallow moisture below 850 millibars. In addition recent surface observation showed dew points were now in the low 60s. Low level winds continued to gradually diminish but were still between 15 to 25 knots below 500 millibars. So still expect periods of quick passing clouds and showers to affect some of the coastal areas overnight and during the early morning hours.
AVIATION UPDATE. VFR conds SCT-BKN lyrs nr FL025. FL050. Mstly Isold SHRA ovr regional waters and en route btw islands. SFC wnds fm ENE 10-15 kts. No sig operational wx impacts attm. L/LVL wnds fm NE 15-25 kts BLO FL 250..then backing and incr w/ht ABV.
MARINE UPDATE. No change to the previous marine discussion. Fresh to locally strong east northeast winds will continue across the regional waters overnight into Tuesday but will also continue to diminish as previously mentioned. Small craft Advisories will continue for much of the local waters and passages at least until tomorrow afternoon.
PREV DISCUSSION. /issued 327 PM AST Mon Mar 1 2021/
SYNOPSIS .
Calm weather is expected for the next few days given dominant high pressure and plenty of dry air across the region. Passing showers will be possible, primarily impacting eastern Puerto Rico. Winds have slowed down just a bit today, but will remain at or above average for the next few days due to high surface pressure to our north. More moisture moves in for the weekend from the south that will give us a better chance for shower activity. Seas will remain hazardous into tomorrow.
SHORT TERM . Rest of Today through Wednesday .
Fairly uneventful weather conditions are expected in the short term due to high pressure and stable conditions over the region. Mid to upper level high pressure is currently building over the region, and its effects will last the full duration of the short term period. Dry and warm air at mid-levels, with an inversion around 700 mb, will keep showers fairly weak and unimpactful. Near the surface, high pressure to our north will keep the easterly trade winds brisk, but a bit weaker during the next few days compared to the last few days.
Below normal moisture content will be with us through tomorrow under east-northeasterly winds. Thus, a few passing showers are possible overnight tonight and tomorrow morning for north and east Puerto Rico. During the day, isolated showers are possible across the region, but only light showers are expected. Overnight Tuesday into Wednesday, some patches of weak moisture are expected to move in as our winds turn more easterly and then east-southeast later during the daytime. Thus overnight, isolated to scattered showers are possible for eastern Puerto Rico and the USVI. Even with these patches of moisture for Wednesday, the moisture is so minimal that only isolated showers are likely, with maybe a few areas of scattered showers over eastern Puerto Rico in the morning and northwest Puerto Rico the afternoon. Brisk low-level steering flow winds will keep all showers moving along fairly quickly to thus limit their impact.
LONG TERM . Thursday through Tuesday .
PREV DISCUSSION . /issued 501 AM AST Mon Mar 1 2021/
A mid-level ridge will dominate the local weather conditions through the end of the workweek. This will promote stable conditions aloft and maintain the trade wind cap across the region. Precipitable water content through this period will be around 1 inch, and diurnally induced afternoon showers should result in minor rainfall accumulations. A surface high pressure will continue to move further away into the central-eastern Atlantic, while a polar trough and associated surface front exits the U.S. East Coast by Friday. The base of the trough and the front are expected at this time to remain just north of the region, however, a pre-frontal trough is expected to develop in a southeasterly wind flow and move over the region on Saturday. Pooling of moisture is expected through the weekend into early next week. Precipitable water content is forecast to increase from 1.75-2.00 inches during this time. Therefore, expect wetter conditions and the potential for urban and small stream flooding will increase due to periods of moderate to locally heavy rainfall. Drier conditions are expected by Tuesday.
AVIATION .
VFR conditions will continue through the period. Mostly clear to partly cloudy skies will also continue, with occasional isolated light SHRA. VCSH most likely for TJSJ overnight and least likely for TJPS and TJMZ. Easterly winds mostly around 15 to 20 knots with gusts up to 30 kts will affect the local terminals. Winds will drop around 10 knots after 01/23z.
MARINE .
Seas are expected to weaken between now and tomorrow as winds also relax a bit across the region. Still, seas will remain around 6 to 10 feet for the Atlantic and 5 to 8 feet for the Caribbean through tonight. For beachgoers, the risk of rip currents continues high for the north-facing beaches of Puerto Rico, the southeast coast of PR, Culebra, the northwestern beaches of St Thomas, and the north and east coast of St Croix.
PRELIMINARY POINT TEMPS/POPS. SJU 71 85 72 86 / 40 30 30 30 STT 72 84 73 82 / 30 30 40 40
SJU WATCHES/WARNINGS/ADVISORIES. PR . High Rip Current Risk through Tuesday afternoon for Culebra- North Central-Northeast-Northwest-San Juan and Vicinity.
VI . High Rip Current Risk through Tuesday afternoon for St Croix- St Thomas. St John. and Adjacent Islands.
AM . Small Craft Advisory until 2 PM AST Tuesday for Caribbean Waters of Puerto Rico from 10 NM to 17N-Anegada Passage Southward to 17N-Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-Coastal Waters of Northern Puerto Rico out 10 NM- Coastal Waters of Northern USVI and Culebra out 10 NM- Coastal Waters of Northwestern Puerto Rico out 10 NM- Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out 10 NM-Mona Passage Southward to 17N.
SHORT TERM . RAM LONG TERM . mb PUBLIC DESK . GL
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| 42085 - Southeast of Ponce, PR | 10 mi | 83 min | NNE 18 G 19 | 78°F | 79°F | 4 ft | 1014.8 hPa (+2.2) | |
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 10 mi | 98 min | ENE 2.9 | 76°F | 1017 hPa | 65°F | ||
| MGIP4 - 9759110 - Magueyes Islands, PR | 34 mi | 53 min | NE 4.1 G 8 | 76°F | 1015.8 hPa | |||
| SJNP4 - 9755371 - San Juan, PR | 36 mi | 53 min | ENE 12 G 15 | 78°F | 79°F | 1016.8 hPa | ||
| 41053 - San Juan, PR | 38 mi | 83 min | ENE 16 G 19 | 78°F | 79°F | 7 ft | 1015.4 hPa (+1.4) | |
| MGZP4 - 9759394 - Mayaguez, PR | 43 mi | 53 min | 75°F | 80°F | 1017.1 hPa |
Wind History for Penuelas (Punta Guayanilla), PR
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
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Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
Link to 5 minute data for TJPS
Wind History from JPS (wind in knots)
| 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | |
| Last 24hr | E | NE | NE | Calm | ||||||||||||||||||||
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| 2 days ago |
Tide / Current Tables for Playa Cortada, Puerto Rico
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPlaya Cortada
Click for Map
Mon -- 12:20 AM AST -0.01 feet Low Tide
Mon -- 06:44 AM AST Sunrise
Mon -- 08:32 AM AST Moonset
Mon -- 11:05 AM AST 0.53 feet High Tide
Mon -- 12:36 PM AST 0.08 feet Low Tide
Mon -- 06:32 PM AST Sunset
Mon -- 09:03 PM AST Moonrise
Mon -- 11:27 PM AST 0.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 12:20 AM AST -0.01 feet Low Tide
Mon -- 06:44 AM AST Sunrise
Mon -- 08:32 AM AST Moonset
Mon -- 11:05 AM AST 0.53 feet High Tide
Mon -- 12:36 PM AST 0.08 feet Low Tide
Mon -- 06:32 PM AST Sunset
Mon -- 09:03 PM AST Moonrise
Mon -- 11:27 PM AST 0.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 0 | -0 | 0 | 0.1 | 0.1 | 0.2 | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.3 | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 |
Tide / Current Tables for Playa de Ponce, Puerto Rico
EDIT (on/off) Help One Week of DataPlaya de Ponce
Click for Map
Mon -- 12:44 AM AST -0.01 feet Low Tide
Mon -- 06:44 AM AST Sunrise
Mon -- 08:33 AM AST Moonset
Mon -- 10:48 AM AST 0.53 feet High Tide
Mon -- 01:00 PM AST 0.08 feet Low Tide
Mon -- 06:32 PM AST Sunset
Mon -- 09:04 PM AST Moonrise
Mon -- 11:10 PM AST 0.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 12:44 AM AST -0.01 feet Low Tide
Mon -- 06:44 AM AST Sunrise
Mon -- 08:33 AM AST Moonset
Mon -- 10:48 AM AST 0.53 feet High Tide
Mon -- 01:00 PM AST 0.08 feet Low Tide
Mon -- 06:32 PM AST Sunset
Mon -- 09:04 PM AST Moonrise
Mon -- 11:10 PM AST 0.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
| 12 am | 1 am | 2 am | 3 am | 4 am | 5 am | 6 am | 7 am | 8 am | 9 am | 10 am | 11 am | 12 pm | 1 pm | 2 pm | 3 pm | 4 pm | 5 pm | 6 pm | 7 pm | 8 pm | 9 pm | 10 pm | 11 pm |
| 0.1 | -0 | 0 | 0.1 | 0.1 | 0.2 | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.3 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.3 | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 |
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