Marine Weather and Tides
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 5:28AM||Sunset 5:22PM||Friday October 18, 2019 5:38 PM CST (23:38 UTC)||Moonrise 11:16PM||Moonset 8:08AM||Illumination 72%|
7 Day Forecast for Marine Location Near Pole Ojea, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 181746|
area forecast discussion
national weather service san juan pr
146 pm ast Fri oct 18 2019
Synopsis A tropical wave will move across the area through
Saturday. Heavy showers across pr could cause localized flash
flooding and mudslides in areas of steep terrain. Lingering
moisture on Sunday will aid in the development of showers and
thunderstorms over mainland pr. An upper level low and induced
surface trough are forecast to move over the region between
Tuesday and Wednesday.
Short term Today through Sunday...
a tropical wave and its associated moisture are causing showers and
isolated thunderstorms across the u.S. Virgin islands and eastern
puerto rico this afternoon. This activity will continue to move to
the west and affect other areas of pr. Also, diurnal heating and
local effects will enhance convection over the interior and western
areas of puerto rico later today. Tjua dual pol storm total shows
0.5 to 1.0 inches of rain has fallen across some areas of the metro
area of san juan this morning, if an additional amount of 1 to 2
inches falls, a flood advisory may be required. Showers and
thunderstorms that do develop are expected to move slowly as a
result of light low-level steering flow across the region. The
recent tjsj sounding and vad wind profile show winds speeds of less
than 10 kts today. Therefore due to saturated soils from previous
days rainfall, and expected rainfall today will cause expected urban
and small stream flooding and mudslides in steep terrain today. In
addition, the combination of increased low-level moisture, diurnal
and local effects, as well as light east to southeast winds enhances
the flooding threat across the region. The potential for flooding
will continue through the weekend as lingering moisture from the
tropical wave, and cutoff low are forecast to remain near puerto
Long term Monday through Friday... From prev discussion...
for the beginning of the workweek, high pressure at the low and
mid levels should keep the winds coming out of the east-northeast.
This wind flow will carry groups of showers across the local|
area. For Tuesday, an upper-level trough will deepen north of the
islands. A cut-off low will detach from this feature on Wednesday
and will be positioned over hispaniola. At the same time, a
surface- induced trough should move over the islands from the
east. All these factors should result in an unsettled weather
pattern for the mid- part of the workweek. Then, on Tuesday,
although the surface trough will move away into the central
caribbean, the upper-level low should meander just south of
hispaniola, maintaining some instability across puerto rico and
the u.S. Virgin islands. By Friday, a tropical wave will move over
the eastern caribbean. However, at this time, the most
significant rainfall activity is expected to stay south of the
Aviation A tropical wave is producing tsra shra between the
leeward and vi terminals, this could cause brief MVFR conds during
the next 12-24 hours. Tempo MVFR expected at tjps tjmz through
this afternoon due to locally induced tsra. Additional shra tsra
is expected to increase from the east with the wave passage and
continue through Saturday. Winds will prevail from the e-ese at 10
to 15 kts with higher gusts in shra tsra.
Marine Seas will continue below 5 feet and east to southeast
trades will prevail at 10-15 knots through the weekend. Showers
and thunderstorms are expected to increase through Saturday across
the regional waters with the passage of a tropical wave. There is
a moderate risk of rip currents for the northern beaches of the
Preliminary point temps pops
Sju 77 88 78 87 50 40 40 40
stt 79 88 80 88 60 60 50 40
Sju watches warnings advisories
Short term... Tw
long term... .Ds
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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 (19,4,5,8)(on/off)  Help
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