Scientific Forecaster Discussion
Area forecast discussion
National Weather Service San Juan PR
459 am AST Monday Apr 27 2015
Synopsis...upper level ridge will continue to dominates the
region next several days. Hot conditions expected to continue at
least through middle week as south to southeast wind flow prevails.
Discussion...mostly clear skies prevailed across Puerto Rico and
the U.S. Virgin Islands overnight. Very dry conditions will
continue to prevail across most of the area as an upper level high
pressure dominates the local region. No changes in this weather
pattern is expected through at least middle week. Near or record
maximum temperatures are expected as winds will continue mainly from
the south southeast.
In addition...latest aerosol model forecast calls for an area of
Saharan air layer to arrive to the local region Wednesday and
Thursday. Therefore...warm and uncomfortable temperatures can be
expected through most of the work week.
Aviation...VFR through at least Tuesday as hot/dry air streams from southeast.
Isolated rain showers (at most) will be hi based and too light to cause much
reduced visibility or ceiling. Wind below fl100 S to SW 5-16 knots through Tuesday.
Marine...seas up to 4 feet and winds up to 15 knots are expected
over the coastal waters.
Preliminary point temps/pops...
sju 92 80 93 80 / 20 0 20 10
stt 87 80 87 79 / 10 20 20 10