Area Forecast Discussion
Issued by NWS San Juan, PR

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FXCA62 TJSJ 170920
AFDSJU

Area Forecast Discussion
National Weather Service San Juan PR
520 AM AST Tue Jan 17 2017

.SYNOPSIS...High pressure across the western Atlantic will move
east as a intense low pressure system exits the U.S. east coast
Wednesday into Thursday. A east to east northeast wind flow will
continue to dominates the local region. Winds will diminish
considerably next few days.

&&

.DISCUSSION...Periods of passing showers prevailed across the
local islands overnight. Showers affected the eastern half of
Puerto Rico with rainfall accumulation less than half inch. An
east to east northeast wind flow will continue to prevail today.
These winds will transport showers across the region from time to
time. Local area will continue to be dominated by a high pressure
system which is located north of the area over the western
Atlantic. This high pressure is expected to weaken next couple of
days as a deep surface low pressure area moves across the western
Atlantic, eroding the high pressure. As a result, winds are
expected to diminish significantly especially after Thursday. No
major changes in the weather pattern is expected next several days
as relatively dry weather conditions are expected to continue
across the local area.

&&

.AVIATION...Mostly VFR conditions are expected across the local
flying area however, a few passing -SHRA/SHRA expected across TAF
sites at times. Winds expected from the E/NE at around 10 kt
increasing at 15 to 20 kt and gusty aft 17/12z.

&&

.MARINE...Seas will continue to gradually subside later today into
Wednesday. Seas up to 7 feet and winds up to 20 knots are expected
to continue through Wednesday morning.


&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  82  73  81  71 /  30  30  30  10
STT  84  72  82  70 /  30  30  20  20

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...High Rip Current Risk through late tonight for Culebra-Mayaguez
     and Vicinity-North Central-Northeast-Northwest-San Juan and
     Vicinity-Southeast-Western Interior.

     Small Craft Advisory until 6 AM AST Wednesday for Northeast.

VI...High Rip Current Risk through late tonight for St Croix.

AM...Small Craft Advisory until 6 AM AST Wednesday for Anegada
     Passage Southward to 17N-Atlantic Waters of Puerto Rico and
     USVI from 10 NM to 19.5N-Mona Passage Southward to 17N.

     Small Craft Advisory until 6 PM AST this evening for Caribbean
     Waters of Puerto Rico from 10 NM to 17N.

&&

$$

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