Thursday, February27, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Mayag�ez, 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 6:47AMSunset 6:34PM Thursday February 27, 2020 9:29 AM AST (13:29 UTC) Moonrise 9:22AMMoonset 9:55PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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
    EDIT      (on/off)   Help
AMZ742 Coastal Waters Of Northwestern Puerto Rico Out 10 Nm- 358 Am Ast Thu Feb 27 2020
.small craft should exercise caution...
Today..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds.
Tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds.
Friday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers.
Friday night..East winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers.
Saturday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Sunday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Numerous showers.
Monday..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Numerous showers.
AMZ700 358 Am Ast Thu Feb 27 2020
Synopsis for puerto rico and the uS. Virgin islands waters... Fair-weather conditions will prevail across the local waters until the arrival of a cold front on Sunday when showers will increase in coverage, frequency and intensity. A northeasterly swell will move across the atlantic waters and caribbean passages through at least this weekend.


7 Day Forecast for Marine Location Near Mayag�ez, PR
   Hourly   EDIT   Help
location: 18.22, -67.15     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXCA62 TJSJ 270848 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 448 AM AST Thu Feb 27 2020

SYNOPSIS.

A dry and colder air mass filtering across the northeast Caribbean will result in clear skies and pleasant temperatures today. Although patches of moisture will move at times through the weekend, a fair weather pattern is expected to persist. Unstable weather conditions are forecasted for the first part of next week as a cold front moves closer and linger over the islands.

SHORT TERM. Today through Saturday .

A drier air mass filtering into the region from the eastern Atlantic will erode the scant moisture remaining across the region today. The depleted low-level moisture and ridging will bring fair weather for Puerto Rico and the U.S. Virgin Islands today, and allow areas that received a plethora of rain to dry out. The GFS shows precipitable water values plummeting throughout the day from 1.1 to 0.65 inches this afternoon. An indication of how dry this afternoon will be is 0.65 inches precipitable water value is two standard deviations below the average for February. The low precipitable water values; and ridging which will increase the trade wind cap over the area will inhibit shower development today. Despite the above conditions, a few isolated showers are possible as a result of diurnal heating and local effects.

Friday, the frontal boundary, which will soon move off the east coast of the United States today, will continue to move to south into the Atlantic waters and begin pressing against the surface and mid-level ridge, causing them to weaken. Meager moisture embedded in the easterly trades is forecast to move over Puerto Rico and adjacent Islands. The added moisture will increase the likely-hood for shower development during the afternoon. However, drier air in the mid-levels of the atmosphere will limit the vertical growth of showers, and cause them to be short-lived.

Saturday, as the frontal boundary continues to shift south, the surface and mid-level ridge will continue to weaken and become oriented from the northeast to the southwest. The shifting of the ridges will cause surface winds to turn southerly ahead of the approaching frontal boundary northwest of Puerto Rico. Although a southerly wind component is forecast over Puerto Rico and adjacent Islands, a relatively drier air mass is forecast to hold, with precipitable water climbing to 1.28 inches. Nevertheless, the moisture increase, as well as local and diurnal effects, will aid in the development of a few isolated to scattered showers.

LONG TERM. Sunday through Friday .

A polar trough will swing by the island weakening the ridge aloft. Furthermore, the aforementioned cold front will move closer to the islands, inducing a surface trough. Once again, model guidance is suggesting an unstable and wet pattern with comfortable lower temperatures by the first part of next week. This front will dig south (or linger) until it dissipates over the islands, and its lingering moisture will stall through at least early Wednesday morning. Winds will possibly increase, and breezy conditions will remain possible after the passage of this front. Although models are suggesting an unstable weather pattern, the confidence is medium-high because the event is three to five days away from today.

Skies are forecasted to slowly clear, a colder air mass will filter into the region, and a ridge pattern is suggested to build aloft by Thursday or Friday. However, patches of moisture embedded in the trades, suggested by model guidance, will reach the islands at time. Therefore, the typical trade wind showers could reach the islands from time to time, followed by limited afternoon convection over the western sections.

Aviation. VFR conds will continue to prevail through the remainder of the forecast period. A few iso SHRA are possible mainly over the SW and interior areas of Puerto Rico by 27/18Z. Winds will be from the E-NE ranging from 10 to 15 kts with higher gust possible. Max winds of WNW 20-40 kt btwn FL362-450.

MARINE. A northeasterly swell will continue to cause hazardous seas across the Atlantic Waters and Caribbean Passages through at least Saturday. Therefore, small craft operators should exercise caution across these waters. Marine guidance is indicating increasing winds by next week, which will create hazardous seas by Monday. If guidance is right, small craft advisories could be required.

Beachgoers, there is a high risk of rip currents for the beaches from the northwest to northeast coast of mainland Puerto Rico and for Culebrita in Culebra.

PRELIMINARY POINT TEMPS/POPS. SJU 84 71 84 74 / 0 10 20 50 STT 83 74 83 73 / 0 30 30 50

SJU WATCHES/WARNINGS/ADVISORIES. PR . High Rip Current Risk through this afternoon for Culebra-North Central-Northeast-Northwest-San Juan and Vicinity.

VI . None. AM . None.

SHORT TERM . TW LONG TERM . CAM


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGZP4 - 9759394 - Mayaguez, PR 0 mi59 min 76°F 81°F1018.1 hPa
PTRP4 11 mi29 min ENE 5.1 G 8.9 78°F
41115 - Rincon, Puerto Rico (181) 13 mi59 min 81°F5 ft
MGIP4 - 9759110 - Magueyes Islands, PR 18 mi59 min NNE 4.1 G 5.1 74°F 80°F1017.5 hPa
AROP4 - 9757809 - Arecibo, PR 30 mi59 min ENE 2.9 G 5.1
42085 - Southeast of Ponce, PR 41 mi89 min NNE 7.8 G 9.7 77°F 81°F2 ft1016.3 hPa (+1.8)
MISP4 - 9759938 - Mona Island, PR 43 mi59 min 76°F 79°F1018 hPa

Wind History for Mayaguez, 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.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Aquadilla, Rafael Hernandez Airport, PR19 mi39 minESE 810.00 miFair75°F0°F%1018.3 hPa

Link to 5 minute data for TJMZ

Wind History from JMZ (wind in knots)
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
10
AM
11
AM
12
PM
Last 24hr----------------------------------------E6E5E8E9
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Mayaguez, Puerto Rico
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Mayaguez
Click for Map
Thu -- 05:05 AM AST     0.19 feet Low Tide
Thu -- 06:49 AM AST     Sunrise
Thu -- 09:21 AM AST     Moonrise
Thu -- 11:01 AM AST     1.08 feet High Tide
Thu -- 05:19 PM AST     0.15 feet Low Tide
Thu -- 06:33 PM AST     Sunset
Thu -- 09:54 PM AST     Moonset
Thu -- 11:32 PM AST     1.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
10.90.60.40.30.20.20.40.60.811.110.90.70.40.30.20.20.30.50.811.1

Tide / Current Tables for Puerto Real, Puerto Rico
   EDIT      (on/off)   Help   One Week of Data
Puerto Real
Click for Map
Thu -- 05:00 AM AST     0.14 feet Low Tide
Thu -- 06:49 AM AST     Sunrise
Thu -- 09:21 AM AST     Moonrise
Thu -- 10:58 AM AST     0.79 feet High Tide
Thu -- 05:14 PM AST     0.11 feet Low Tide
Thu -- 06:34 PM AST     Sunset
Thu -- 09:54 PM AST     Moonset
Thu -- 11:29 PM AST     0.84 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.70.60.50.30.20.10.20.30.50.60.70.80.70.60.50.30.20.10.10.20.40.60.70.8

Weather Map
       (on/off)   Help Weather Map
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 (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Puerto Rico,Virgin Islands
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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.