Advisory NPW Special Advisory — Fri Nov 29, 2024 4:06 AM

NPWSJU) was issued for these areas.

A broad surface high pressure over the central Atlantic will
continue to promote southeasterly winds for the rest of the short
term period. Embedded in this flow, weak trade wind perturbations
will reach the islands each day and aid in the development of
afternoon showers and isolated thunderstorms over western PR, and
promote passing showers at times across the windward areas of the
islands during the night and early morning hours.

&&

.LONG TERM...Monday through Friday...

Patches of moisture will move across the region by the beginning
of the workweek through at least Wednesday. A surface high
pressure building in the Central Atlantic will promote
southeasterly winds, shifting from the east on Tuesday and
returning from the southeast on Thursday night. Based on the
latest model guidance, near above-normal PWAT values will
gradually decrease through the forecast period. 500 mb
temperatures will mostly be -6 and -5 degrees, and the Glvez-
Davison Index suggests shallow convection during the afternoons.
The combination of available moisture, diurnal heating, and local
effects will promote showers and isolated thunderstorms each day,
particularly in portions of eastern Puerto Rico in the morning and
west/northwestern Puerto Rico in the afternoon. The best moisture
content will be seen in the first part of the week, elevating the
risk of excessive rainfall. Weather conditions will improve from
Thursday onwards as patches of dry air move across the region.
High temperatures are expected to range between the upper 80s and
low 90s across the urban areas and lower elevations of the
islands, with a limited heat risk for Puerto Rico and the U.S.
Virgin Islands.


&&

.AVIATION...

(06Z TAFS)

SHRA/TSRA increasing today due to sfc trof crossing the local area
from the Anegada Passage. Tempo MVFR conds are possible across the
USVI/Eastern PR terminals thru most of the fcst period. Mtn tops
obscd expected ovr eastern PR. Additional, SHRA/TSRA expected in and
around TJBQ btw 29/18z-22z. ESE winds will increase up to 12 knots
with sea breeze variations at TJBQ aft 29/14z.


&&

.MARINE...

A surface induced trough will move across local waters today,
increasing shower and thunderstorm activity. A surface high pressure
building over the central Atlantic will promote moderate to locally
fresh trade winds. A long period northeasterly swell continues
spreading across the local waters and passages, deteriorating marine
conditions for the next few days.

&&

.BEACH FORECAST...

A long period northeasterly swell will continue to spread across
the local Atlantic waters today and into the weekend,
deteriorating coastal conditions across exposed areas. A high risk
of rip currents is in effect for the northern coastline of Puerto
Rico, from Rincon to Ceiba, as well as for Vieques, Culebra, and
the U.S. Virgin Islands. For more information, please refer to the
latest Coastal Hazard Message (CFWSJU) and Surf Zone Forecast
(SRFSJU).

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...High Rip Current Risk through Sunday afternoon for PRZ001-002-
     005-008-012.

     Heat Advisory from 10 AM this morning to 5 PM AST this afternoon
     for PRZ003-007-011.

     High Rip Current Risk through this afternoon for PRZ010.

     High Rip Current Risk through Saturday afternoon for PRZ013.

VI...High Rip Current Risk through Sunday afternoon for VIZ001-002.

AM...None.
&&

$$