Friday, February28, 2020
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Marine Weather and Tides
Playita Cortada, PR

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:44AMSunset 6:33PM Friday February 28, 2020 6:22 PM AST (22:22 UTC) Moonrise 9:54AMMoonset 10:39PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 354 Pm Ast Fri Feb 28 2020
Tonight..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Saturday night..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Sunday..East winds 5 to 10 knots veering southeast in the afternoon. Seas 1 to 3 feet. Dominant period 10 seconds. Scattered showers.
Sunday night..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Monday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Tuesday..Northeast 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 7 seconds. Isolated showers.
AMZ700 354 Pm Ast Fri Feb 28 2020
Synopsis for puerto rico and the uS. Virgin islands waters... Gentle to moderate easterly winds prevail across the local waters, becoming more southeasterly on Saturday as a frontal trough approaches the region. Seas below 5 feet are expected for most of the weekend. On Sunday night, a cold front will push into the area from the northwest, bringing increased shower activity. Winds and seas will also increase with the arrival of the front as well as a northerly swell that will push into the local waters around the same time.


7 Day Forecast for Marine Location Near Playita Cortada, PR
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location: 17.98, -66.45     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 281951 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 351 PM AST Fri Feb 28 2020

SYNOPSIS.

Fair weather continues today with stable conditions persisting over the region. Increasing moisture and decreasing stability will lead to increasing potential for showers through the weekend. This will be followed by the arrival of a frontal boundary, and unsettled weather will dominate the first part of the week next week.

SHORT TERM. Rest of Today through Sunday .

Moisture across the area has increased compared to yesterday. However, with ridging aloft, there remains high levels of stability, which is evidenced in the 12Z sounding, with a strong inversion around 820 hPa. This will prevent significant development of shower activity; though some showers are still possible, they are not likely to be widespread or to bring heavy rainfall.

A frontal boundary is expected to approach the region late this weekend. As it does, the trough with which it is associated will be eroding the ridging across the area as the ridge also pulls away to the northeast, decreasing the stability somewhat. Meanwhile, moisture will continue to increase through the weekend as well. Because of this, increasing shower activity is anticipated, somewhat on Saturday, but more significantly on Sunday.

LONG TERM. Monday through Saturday . From Prev Discussion .

A polar trough moving near the islands will replace the ridge aloft that prevailed through last week. At the surface, a cold front forecasted to stall until dissipates over the islands will induce a surface trough and will bring plenty of moisture through much of the week. Both GFS and ECMWF are suggesting shower conditions and pleasant temperatures through the first half of next week. Global models have been consistent in suggesting an unstable and moist weather pattern during the medium-range forecast. Therefore, confidence in them has increased today.

Surface high pressure behind the front will move into the central Atlantic Wednesday and Thursday. Furthermore, an upper-level ridge is forecast to build over the Northeast Caribbean. GFS is now indicating additional moisture being push over the islands through at least Friday. Although moisture is forecast to slowly erodes, showery weather looks possible through the second part of the work-week too. At this time, there is a lot of uncertainty in this scenario. Moisture will erodes ahead of a cold front, suggested near the region by the weekend.

AVIATION.

VFR with passing SHRA en route btw islands and over regional waters SCT ocnly BKN lyrs nr FL025. FL050. Few tops nr FL100. Sfc wnds FM E 10-15 kts with sea breeze variations bcmg lgt/vrb aft 28/23Z. L/lvl wnds fm ENE 15-20 kts BLO FL150. No sig operational wx impacts durg prd.

MARINE.

Seas are generally subsiding this afternoon, and will generally be below 5 feet through most of the weekend. On Sunday night, a northerly swell will push into the local Atlantic waters, associated with a cold front; combined with enhanced winds forecast behind the front, this is expected to cause hazardous marine conditions that will last through at least midweek. For the beachgoers, there is a moderate risk of rip currents at north-facing beaches, and low to moderate risk elsewhere.

PRELIMINARY POINT TEMPS/POPS. SJU 74 86 73 84 / 50 30 40 50 STT 73 84 72 83 / 50 30 30 50

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

SHORT TERM . DS LONG TERM . CRS PUBLIC DESK . LIS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42085 - Southeast of Ponce, PR 9 mi83 min ESE 9.7 G 12 81°F 81°F2 ft1015 hPa (-0.9)
JOXP4 - Jobos Bay Reserve, Puerto Rico 12 mi98 min E 8 83°F 1017 hPa70°F
MGIP4 - 9759110 - Magueyes Islands, PR 32 mi53 min SSW 2.9 G 4.1 80°F 81°F1016.2 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 33 mi53 min 85°F 73°F
AROP4 - 9757809 - Arecibo, PR 37 mi53 min NNE 8.9 G 13
SJNP4 - 9755371 - San Juan, PR 38 mi53 min ENE 14 G 17 78°F 81°F1016.4 hPa
41053 - San Juan, PR 39 mi83 min ENE 14 G 16 79°F 81°F4 ft1015.2 hPa (-0.7)
MGZP4 - 9759394 - Mayaguez, PR 41 mi59 min 81°F 83°F1016.9 hPa

Wind History for Penuelas (Punta Guayanilla), PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for TJPS

Wind History from JPS (wind in knots)
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Tide / Current Tables for Playa Cortada, Puerto Rico
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Playa Cortada
Click for Map
Fri -- 12:35 AM AST     0.46 feet High Tide
Fri -- 01:26 AM AST     0.27 feet Low Tide
Fri -- 06:45 AM AST     Sunrise
Fri -- 09:53 AM AST     Moonrise
Fri -- 11:41 AM AST     0.45 feet High Tide
Fri -- 02:04 PM AST     0.07 feet Low Tide
Fri -- 06:31 PM AST     Sunset
Fri -- 10:40 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
Click for Map
Fri -- 12:18 AM AST     0.46 feet High Tide
Fri -- 01:50 AM AST     0.27 feet Low Tide
Fri -- 06:46 AM AST     Sunrise
Fri -- 09:54 AM AST     Moonrise
Fri -- 11:24 AM AST     0.45 feet High Tide
Fri -- 02:28 PM AST     0.07 feet Low Tide
Fri -- 06:32 PM AST     Sunset
Fri -- 10:40 PM AST     Moonset
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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wmap_A
GEOS Local Image of Puerto Rico    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (17,4,5,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.