Tuesday, July27, 2021
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Marine Weather and Tides
Dorado, PR

Version 3.4
NOTICE
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 6:00AMSunset 7:03PM Tuesday July 27, 2021 1:40 AM AST (05:40 UTC) Moonrise 10:02PMMoonset 9:18AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 842 Pm Ast Mon Jul 26 2021
.small craft should exercise caution...
Rest of tonight..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Scattered showers through the day.
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 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Scattered showers.
Wednesday night..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated Thunderstorms, then isolated showers.
Friday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Saturday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
AMZ700 842 Pm Ast Mon Jul 26 2021
Synopsis for puerto rico and the uS. Virgin islands waters... Winds will turn more from the east to northeast later tonight through Tuesday. More tranquil seas will be observe late tonight into tomorrow, lasting through the weekend. A weak trough on Wednesday will shift winds once again from the east to southeast, and increase the potential for isolated Thunderstorms across the regional waters through Thursday.


7 Day Forecast for Marine Location Near Dorado, PR
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location: 18.47, -66.29     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 270101 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 901 PM AST Mon Jul 26 2021

UPDATE. The latest sounding, TJSJ 27/00Z, shows a steering flow now from the east-northeast. The air mass looks drier as well, with precipitable water values around 1.7 inches. Not too many clouds are evident to the northeast of the islands for the rest of the evening hours, but later in the overnight and early morning, advective showers will be favored over the northern and eastern portions of the forecast area. Significant rainfall accumulations are not expected at this time.

AVIATION. VFR conditions expected to prevail through the forecast period. Light showers are expected to move in the overnight through 27/12Z but without having significant impacts. Stronger activity between 16-20Z for SW PR could result in mountain obscuration. Winds will turn light and variable through 27/12Z, then out of the E at 15 to 20 knots.

MARINE. Latest buoy observations have seas up to 5 feet for the offshore waters, and 2-3 feet nearshore. Moderate winds at 15 to 20 knots are expected to continue, resulting in choppy seas. For the beaches, the rip current risk is moderate for the northern, eastern and southeastern coast of Puerto Rico, and for most of Vieques and Culebra, south st. John and the northern and eastern half of St. Croix.

PREV DISCUSSION. /issued 450 PM AST Mon Jul 26 2021/

SYNOPSIS .

A somewhat drier air mass with low concentrations of Saharan Dust particles will continue to filter in over the forecast area through mid-week. This will be followed by another TUTT reaching the area, increasing chances of showers and isolated thunderstorms over the area. Choppy marine conditions will continue for the next few days.

SHORT TERM . Tonight through Wednesday .

Weather conditions are expected to gradually improved tonight into tomorrow. Thus, limited shower activity is expected tonight into the overnight. A shift in winds now more to the east northeast will result in a east northeasterly wind flow pattern. Thus, a few advecting showers could affect portions of the northeastern sections during the early morning hours. However, the chance of showers and isolated thunderstorms will increase once again due to another TUTT placing itself near the area by Tuesday into Wednesday. Latest model guidance suggest Wednesday as the most active day in terms of weather.

LONG TERM . Thursday through Tuesday . From Prev Discussion.

Conditions are expected to remain somewhat unsettled on Thursday as the TUTT will be situated over the Dominican Republic, with the area remaining on the favorable side for divergence aloft. This in combination with near-normal moisture levels will help to promote another round of enhanced afternoon convection, mainly across the northwestern quadrant of Puerto Rico with the low-level flow becoming southeasterly. As the TUTT continues to move farther westward, a mid and upper-level ridge will then build into the area on Friday and into next weekend, promoting dry air intrusion. A tropical wave is expected to move across the Caribbean waters late Friday into early Saturday, however, at this time model guidance suggests that the most active part of the wave remains south of the area. Therefore, mainly fair weather conditions are forecast at this time for Friday and into the upcoming weekend with limited afternoon convection possible across western Puerto Rico. Another TUTT is expected to retrograde towards the area early next week, with an increase in convection possible once again.

AVIATION .

SHRA/TSRA could linger in and around TJBQ till 22z. Elsewhere, mainly VFR conditions will prevail during the next 24 hours. ESE winds will continue around 15 kt with higher gusts through late this afternoon, shifting from the ENE at 8-15 kt tonight into Tuesday.

MARINE .

Small craft operators should continue to exercise caution due to seas between 3 and 6 feet and winds up to 20 knots. More tranquil seas are forecast through the rest of the work week. There is a moderate risk of rip currents for the northern and southeastern beaches of Puerto Rico as well as for most of the beaches of Vieques, Culebra, and St. Croix tonight.

PRELIMINARY POINT TEMPS/POPS. SJU 77 86 76 87 / 30 30 40 40 STT 78 89 77 87 / 30 30 40 30

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

SHORT TERM . ERG LONG TERM . FRG PUBLIC DESK . ICP


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41053 - San Juan, PR 10 mi41 min E 7.8 G 9.7 82°F 82°F3 ft1016.8 hPa (-0.5)
41121 22 mi45 min 83°F3 ft
AROP4 - 9757809 - Arecibo, PR 22 mi131 min SE 5.1 G 7 83°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 36 mi56 min N 1.9 79°F 1018 hPa72°F
42085 - Southeast of Ponce, PR 43 mi41 min NE 7.8 G 9.7 83°F 3 ft1016.9 hPa (+0.0)
41056 46 mi41 min ENE 7.8 G 9.7 82°F 83°F2 ft1016.6 hPa (-0.3)
MGZP4 - 9759394 - Mayaguez, PR 49 mi131 min 81°F 85°F1017.7 hPa

Wind History for San Juan, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR16 mi45 minE 310.00 miA Few Clouds79°F75°F88%1017.5 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)
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Last 24hr------CalmCalmCalmSE3SE5E12--E11E14E15E14E14NE17E10E10E10E7E5E4SE3E3
1 day agoCalmSW3CalmE10SE4CalmCalm3S7NE8E7SE6E9SE4SE4SW3CalmE3E4E4SE4SE3E6E9
2 days agoE4CalmNE63S3E5CalmNE12
G20
E8NE9E13E12SE4E5E5E8E5SE4CalmSE5CalmCalmCalmCalm

Tide / Current Tables for San Juan, Puerto Rico (3)
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San Juan
Click for Map
Tue -- 05:56 AM AST     0.34 feet Low Tide
Tue -- 06:00 AM AST     Sunrise
Tue -- 09:16 AM AST     Moonset
Tue -- 11:18 AM AST     1.13 feet High Tide
Tue -- 05:18 PM AST     0.06 feet Low Tide
Tue -- 07:00 PM AST     Sunset
Tue -- 10:01 PM AST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.61.30.90.60.40.30.40.60.811.11.10.90.70.40.20.10.10.30.611.31.5

Tide / Current Tables for San Juan, Puerto Rico (2) (expired 1998-12-31)
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San Juan
Click for Map
Tue -- 05:54 AM AST     0.34 feet Low Tide
Tue -- 06:00 AM AST     Sunrise
Tue -- 09:17 AM AST     Moonset
Tue -- 11:17 AM AST     1.14 feet High Tide
Tue -- 05:17 PM AST     0.07 feet Low Tide
Tue -- 07:00 PM AST     Sunset
Tue -- 10:01 PM AST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.61.30.90.60.40.30.40.60.811.11.10.90.70.40.20.10.10.30.611.31.5

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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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