Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 6:40AM||Sunset 6:23PM||Friday February 22, 2019 8:24 AM AST (12:24 UTC)||Moonrise 9:41PM||Moonset 9:06AM||Illumination 90%|
7 Day Forecast for Marine Location Near Suï¿½rez, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 220823|
area forecast discussion
national weather service san juan pr
423 am ast Fri feb 22 2019
Synopsis Mid to upper-level ridge is expected to hold across
the area through at least Monday. This will continue to result in
a mostly stable weather pattern, however, small patches of low-
level moisture may result in some trade wind showers affecting the
area from time to time. Surface high pressure north of the area
will continue to produce breezy conditions through the upcoming
weekend. The ridge aloft is expected to weaken somewhat by the
middle of next week and may allow for better moisture to move
across the area and result in better shower activity.
Short term Today through Sunday...
a surface high pressure north of the region will prevail through
at least Monday. This will continue to generate windy conditions
with winds expected to range between 15 and 25 mph with higher
gusts. Highest winds expected from the mid morning through the
Pulses of low level moisture will continue to move across the local
area from time to time. This will generate passing showers, mostly
affecting the local waters and the eastern areas of puerto rico.
These showers will be wind driven and therefore, be of short
duration with minor accumulations expected.
Long term Monday through Saturday...
the ridge aloft will continue to maintain fair weather conditions
on Monday. By Tuesday and Wednesday, model guidance continues to
indicate that the ridge aloft will begin to weaken somewhat as a
deep polar trough moves across the western atlantic. This would
cause a weakening of the trade wind cap and allow for better
moisture pooling across the region through the end of the work
week. If current model guidance continues to hold on its current
solution, the potential exists for better shower activity to
affect the local area starting on Tuesday and continuing through
the end of the work week.
Aviation MainlyVFR conditions are expected across the terminals
throughout the period. Vcsh -shra are possible across tist tisx tjsj
terminals through 22 09z-14z, which may result in brief MVFR
conditions. A few -shra are also possible across tjmz between 22 16z-
22z. Winds will continue from the e-ene around 10 kts through
22 12z, increasing to 15-20 kts with higher gusts afterwards
through 22 22z.
Marine Choppy and hazardous wind driven seas between 5 and 8
feet are expected across the regional waters through the upcoming
weekend. As a result, small craft advisories are in effect for
the majority of the regional waters. A high risk of rip currents|
is in effect for the northern beaches of pr, culebra, and cramer
park beach in saint croix for today. The rest of the local beaches
have a moderate risk of rip currents. A high risk of rip currents
is expected for the northern beaches of saint thomas starting
Fire weather Recent surface observations indicate that the
vegetation across the southern coastal plains of puerto rico
continue to remain very dry with kdbi values near 600 in cabo
rojo and over 700 in camp santiago. Winds today will continue to
be moderate to strong with speeds ranging between 15 and 25 mph
with higher gusts. A band of low-level moisture, associated with
the remnants of a frontal boundary, will move across the area
during the day and will provide more cloudiness. Therefore,
relative humidity values are expected to be higher than they were
on Thursday but could still drop into the mid to upper 40s for a
few hours later this morning into this afternoon, maintaining the
fire weather risk elevated. Given this scenario, a fire danger
statement (rfdsju) has been issued.
Preliminary point temps pops
Sju 85 74 84 73 40 40 30 20
stt 85 73 84 72 40 20 20 20
Sju watches warnings advisories
Pr... High rip current risk through late Saturday night for culebra-
north central-northeast-san juan and vicinity-
high rip current risk through late Saturday night for northwest.
High rip current risk from Saturday morning through late
Saturday night for mayaguez and vicinity.
Vi... High rip current risk through late Saturday night for st croix.
High rip current risk from this evening through late Saturday
night for st.Thomas... St. John... And adjacent islands.
Am... Small craft advisory until 8 pm ast Sunday for anegada passage
southward to 17n-atlantic waters of puerto rico and usvi
from 10 nm to 19.5n-caribbean waters of puerto rico from 10
nm to 17n-coastal waters of northern puerto rico out 10 nm-
mona passage southward to 17n.
Small craft advisory from 8 am this morning to 8 am ast Sunday
for coastal waters of northern usvi and culebra out 10 nm-
coastal waters of southern usvi vieques and eastern puerto
rico out 10 nm.
Small craft advisory from 2 pm this afternoon to 8 am ast Sunday
for coastal waters of northwestern puerto rico out 10 nm.
Short term... Em
long term... .Gl
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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.
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