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Marine Weather and Tides
Version 3.4 |
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone. 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 6:10AM | Sunset 6:23PM | Sunday September 19, 2021 9:47 AM AST (13:47 UTC) | Moonrise 5:51PM | Moonset 4:53AM | Illumination 96% |  |
AMZ732 Caribbean Waters Of Puerto Rico From 10 Nm To 17n- 427 Am Ast Sun Sep 19 2021
Today..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 12 seconds. Isolated showers through the day.
Tonight..Northeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 12 seconds. Numerous showers and isolated Thunderstorms.
Monday..Northeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers in the morning. Isolated Thunderstorms through the day.
Monday night..Northeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers and isolated Thunderstorms.
Tuesday..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
Wednesday..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 11 seconds. Isolated showers.
Thursday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 12 seconds. East swell around 4 feet. Isolated showers.
Today..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 12 seconds. Isolated showers through the day.
Tonight..Northeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 12 seconds. Numerous showers and isolated Thunderstorms.
Monday..Northeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers in the morning. Isolated Thunderstorms through the day.
Monday night..Northeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers and isolated Thunderstorms.
Tuesday..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
Wednesday..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 11 seconds. Isolated showers.
Thursday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 12 seconds. East swell around 4 feet. Isolated showers.
AMZ700 427 Am Ast Sun Sep 19 2021
Synopsis for puerto rico and the uS. Virgin islands waters... Gentle to moderate east to northeast trade winds will prevail for the next several days. Seas of 4 feet or less are expected across the local waters through tonight. Deteriorating marine conditions, due to the passage of tropical depression sixteen well northeast of the local islands, are expected by early next week. An increase in shower and Thunderstorm activity is also expected for the next several days.
Synopsis for puerto rico and the uS. Virgin islands waters... Gentle to moderate east to northeast trade winds will prevail for the next several days. Seas of 4 feet or less are expected across the local waters through tonight. Deteriorating marine conditions, due to the passage of tropical depression sixteen well northeast of the local islands, are expected by early next week. An increase in shower and Thunderstorm activity is also expected for the next several days.
7 Day Forecast for Marine Location Near El Negro, PR
Hourly EDIT Help
Area Discussion for - San Juan, PR
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXCA62 TJSJ 190921 AFDSJU
Area Forecast Discussion National Weather Service San Juan PR 521 AM AST Sun Sep 19 2021
SYNOPSIS. Scattered showers in the east will turn into showers and isolated thunderstorms in the west, southwest and interior Puerto Rico. Then, on Monday the moisture from newly formed Tropical Storm Peter expected to pass a little more than 300 miles northeast of Rio Grande Puerto Rico at 2 AM AST on Tuesday. This will bring showers and thunderstorms Monday and Tuesday followed by dryer and considerably warmer weather on Wednesday and Thursday followed by warm but generally seasonal conditions thereafter.
SHORT TERM. Today through Tuesday .
The mid to upper level ridge continued to weaken and will shift west of the area as a TUTT low strengthens north/northeast of the region. The TUTT is forecast to sink south and west across the area today and early this week, and this will lead to increasing instability over the region. Induced low level troughiness continued across the region resulting in periods of quick passing trade wind showers along with occasional patches of low level clouds. The combination of available moisture and the gradually increasing instability aloft along with local effects and daytime heating, will all favor afternoon convection mainly over the interior and west to southwest sections of Puerto Rico; with a general steering flow expected to remain out of the east northeast. Less shower activity is expected in and around the U.S. Virgin Islands today but some may develop during the afternoon then gradually increase during the overnight hours. Minor ponding of water on roads and in poor drainage areas will be possible with the heavy rains during the afternoon.
For Monday and into Tuesday the newly formed Tropical Storm Peter is forecast to track northeast of the region based on latest advisory from the National Hurricane Center, as well as model guidance which seem to be in somewhat better agreement today. That said, expect increasing moisture and instability across the region with good potential for enhanced showers and thunderstorm development as the outer bands from the tropical storm moves across the area. That along with the unstable conditions aloft will lead to deteriorating weather conditions across the islands as well as marine conditions.
Based on the latest guidance, Tropical Storm Peter will track northeast of the region, however rainfall amounts between 1 to 3 inches will remain possible across portions of the islands. This will result in a high chance for urban and small stream flooding in some areas. Regardless of development, this system and the unstable conditions aloft are forecast to enhance shower and thunderstorm development across the region during the short term period, as well as deteriorating marine and surf zone conditions through at least Wednesday. For more information regarding Tropical Storm Peter, please refer to the Tropical Storm Peter Advisories (TCPAT1 )issued by the National Hurricane Center, and also stay up to date on the latest local Zone Forecast Products(ZFPPR), Coastal Waters Forecast s(CWFSJU) and Marine Weather Messages (MWWSJU) issued by WFO San Juan PR.
LONG TERM. Wednesday through Sunday .
Tropical Storm Peter is expected to pull away from the area on a generally northwesterly course Wednesday through Friday with some moisture trailing, but just as a ribbon of drier air from subsidence preceded it another ribbon of drier air is expected to follow on Wednesday night. Then alternating wet and dry bands will pull through the area in predominantly southeasterly flow through the end of the period. The GFS shows considerable warming that actually begins today but will reach a peak on Wednesday such that the 1000-850 mb thicknesses move from 1415 meters today to 1426 meters on Wednesday. Thicknesses are not forecast to drop below this Tuesday's level through the next 240 hours even though winds will gradually become east northeasterly again after Sunday. 500 mb temperatures however will begin to fall again on Wednesday and by saturday conditions will be favorable for isolated to scattered thunderstorms in the western and interior portions of Puerto Rico each afternoon, and likely a few thunderstorms over the local waters afterward during the evenings.
AVIATION. VFR conds will prevail thru fcst prd. SCT ocnl BKN lyrs nr FL025 . FL050 with wdly SCT SHRA en route btwn islands and ovr regional waters. VCSH at most of the local terminals except /TJMZ/TJPS TIL 19/13z with brief MVFR and Mtn Top Obscurations ovr Ern PR til 19/12Z due to low clds and SHRA. SFC wnds fm ENE 5-10 KT but incrg to 15 KT with ocnl gusts and sea breeze variations aft 19/14Z. The newly formed Tropical Storm Peter now east of the Northern Leewards is fcst to track NE of the islands based on latest guidance from the National Hurricane Center. This will bring increased cloudiness and chance for showers thunderstorm across the nern Caribbean. Please refer to the latest advisories issued by the National Hurricane Center.
MARINE. Newly formed Tropical Storm Peter will pass northeast of the local area by about 250-300 nm sending swell with a relatively short period of up to 8 feet into the area beginning on Monday in the local outer Atlantic waters. The last of the 7 foot seas should be seen on Tuesday night as TS Peter pulls away. Moderate rip currents are indicated for portions of the northern coasts of Puerto Rico and Culebra, but a high risk is indicated late this week in much the same areas.
PRELIMINARY POINT TEMPS/POPS. SJU 90 78 88 78 / 30 70 60 60 STT 90 77 91 79 / 40 70 70 70
SJU WATCHES/WARNINGS/ADVISORIES. PR . None. VI . None. AM . Small Craft Advisory from 2 PM Monday to 8 AM AST Tuesday for Anegada Passage Southward to 17N.
Small Craft Advisory from 2 PM Monday to 2 AM AST Wednesday for Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N.
SHORT TERM . RAM LONG TERM . WS PUBLIC DESK . ICP
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 |
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 23 mi | 182 min | Calm | 78°F | 1014 hPa | 71°F | ||
| 41056 | 25 mi | 47 min | E 9.7 G 12 | 83°F | 85°F | 3 ft | 1012.9 hPa (+2.0) | |
| CLBP4 - 9752235 - Culebra, PR | 34 mi | 47 min | 85°F | 85°F | 1014.1 hPa (+1.9) | |||
| 41053 - San Juan, PR | 36 mi | 47 min | S 3.9 G 5.8 | 82°F | 84°F | 3 ft | 1014.2 hPa (+2.0) | |
| SJNP4 - 9755371 - San Juan, PR | 36 mi | 47 min | ESE 2.9 G 4.1 | 81°F | 85°F | 1014.9 hPa (+2.1) | ||
| 42085 - Southeast of Ponce, PR | 40 mi | 47 min | ENE 5.8 G 7.8 | 84°F | 2 ft | 1014.4 hPa (+2.0) |
Wind History for Yabucoa Harbor, PR
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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 |
| San Juan, Luis Munoz Marin International Airport, PR | 32 mi | 51 min | ESE 3 | 10.00 mi | Partly Cloudy | 82°F | 74°F | 77% | 1014.5 hPa |
Link to 5 minute data for TJSJ
Wind History from JSJ (wind in knots)
| 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 | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | |
| Last 24hr | E | NE | E | NE | NE G19 | NE | NE | NE | E | E | SE | SE | Calm | Calm | Calm | Calm | S | SE | Calm | Calm | Calm | S | E | |
| 1 day ago | E | E | E | NE | NE G25 | E G24 | E | E | E | E | E | SE | Calm | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | N | |
| 2 days ago | E G19 | E | E | E | E | E | E | NE | NE | E | E | NE | E | E | Calm | Calm | Calm | E | Calm | S | SE | S | S | E |
Tide / Current Tables for Puerto Maunabo, Puerto Rico
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPuerto Maunabo
Click for Map
Sun -- 04:53 AM AST Moonset
Sun -- 06:12 AM AST Sunrise
Sun -- 06:38 AM AST 0.80 feet High Tide
Sun -- 12:01 PM AST 0.15 feet Low Tide
Sun -- 05:51 PM AST Moonrise
Sun -- 06:22 PM AST Sunset
Sun -- 08:45 PM AST 0.78 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 04:53 AM AST Moonset
Sun -- 06:12 AM AST Sunrise
Sun -- 06:38 AM AST 0.80 feet High Tide
Sun -- 12:01 PM AST 0.15 feet Low Tide
Sun -- 05:51 PM AST Moonrise
Sun -- 06:22 PM AST Sunset
Sun -- 08:45 PM AST 0.78 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 |
| 0.6 | 0.6 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 | 0.7 | 0.5 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.8 | 0.7 | 0.6 |
Tide / Current Tables for Vieques Passage, Puerto Rico Current
EDIT (on/off) Help One Week of DataVieques Passage
Click for Map
Sun -- 12:16 AM AST -0.00 knots Slack
Sun -- 03:39 AM AST -0.76 knots Max Ebb
Sun -- 04:52 AM AST Moonset
Sun -- 06:10 AM AST Sunrise
Sun -- 07:05 AM AST 0.00 knots Slack
Sun -- 09:58 AM AST 0.57 knots Max Flood
Sun -- 12:56 PM AST -0.00 knots Slack
Sun -- 04:00 PM AST -0.58 knots Max Ebb
Sun -- 05:50 PM AST Moonrise
Sun -- 06:20 PM AST Sunset
Sun -- 07:00 PM AST 0.00 knots Slack
Sun -- 10:06 PM AST 0.62 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 12:16 AM AST -0.00 knots Slack
Sun -- 03:39 AM AST -0.76 knots Max Ebb
Sun -- 04:52 AM AST Moonset
Sun -- 06:10 AM AST Sunrise
Sun -- 07:05 AM AST 0.00 knots Slack
Sun -- 09:58 AM AST 0.57 knots Max Flood
Sun -- 12:56 PM AST -0.00 knots Slack
Sun -- 04:00 PM AST -0.58 knots Max Ebb
Sun -- 05:50 PM AST Moonrise
Sun -- 06:20 PM AST Sunset
Sun -- 07:00 PM AST 0.00 knots Slack
Sun -- 10:06 PM AST 0.62 knots Max Flood
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 | -0.2 | -0.5 | -0.7 | -0.8 | -0.6 | -0.4 | -0 | 0.3 | 0.5 | 0.6 | 0.5 | 0.3 | -0 | -0.3 | -0.5 | -0.6 | -0.5 | -0.3 | -0 | 0.3 | 0.5 | 0.6 | 0.6 |
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