931
FXCA62 TJSJ 040701
AFDSJU

Area Forecast Discussion
National Weather Service San Juan PR
Issued by National Weather Service Miami FL
301 AM AST Wed Jun 4 2025

.KEY MESSAGES...

* Breezy conditions will persist for the next couple of days
  across the islands.

* Passing showers will move at times across the region, and
  stronger showers are expected each afternoon across western
  Puerto Rico.

&&

.DISCUSSION...

As the Saharan dust departed the region, a weak disturbance moved
in to the region, bringing a couple of showers over the vicinity
of the Virgin Islands and eastern Puerto Rico. Rainfall
accumulations were not that significant. Temperatures were mostly
in the mid and low 70s in coastal areas.

For the islands, a surface high pressure centered over the eastern
Atlantic will maintain the trade wind enhances, with winds out of
the east at 15 to 20 mph and stronger gusts. The gradient could
tighten by the weekend and early next week, with potential
stronger winds. These trade winds will carry shallow patches of
moisture at times, with passing showers across eastern Puerto
Rico and the Virgin Islands during the day, and across western
Puerto Rico in the afternoon. Rainfall accumulations are not
expected to be too significant, but wet roads and ponding of water
can be anticipated.

Saharan dust will remain minimal, although slight concentrations
of this particulate could approach the region by Sunday and early
next week. Temperatures will remain seasonably warm, with highs in
the upper 80s and low 90s. Heat indices will surpass the 100
degree mark in urban and coastal areas, especially along western
and southern Puerto Rico.

&&

.AVIATION...
(06z) Mostly VFR conditions expected to prevail. SHRA will move at
times across the USVI and TJSJ terminals, with minimal impact to
operations anticipated. After 17Z, SHRA is expected across the
western Cordillera Central, causing mountain obscuration. Winds
are from the E at 15-21 kts, with stronger gusts.

&&

.MARINE...
A building surface high pressure across the central Atlantic will
continue to promote moderate to locally fresh trade winds through
midweek. Small craft should exercise caution across most waters due
to winds exceeding 18 knots through at least late Wednesday. East to
southeast winds are expected during the weekend. Isolated
thunderstorms are expected to develop each afternoon over the western
waters of Puerto Rico. Elsewhere, passing trade wind showers are
expected.

&&

.BEACH FORECAST...
Strong trade winds will maintain a moderate rip current risk
across portions of Puerto Rico and the Virgin Islands. For the
weekend and early next week, these winds might become stronger, so
high rip current risk cannot be ruled out in some areas.

&&

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

$$

FORECAST....ERG
AVIATION...LIS