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TROPICAL WAVE WATCH: Hurricane Center Monitoring Activity


Nothing Imminent, But Tropics Remain Active As Hurricane Season Continues…



BOCA RATON, FL ( (Copyright © 2021 MetroDesk Media, LLC) — The National Hurricane Center on Saturday says it is monitoring three tropical waves. None pose an immediate threat of development. Here is the official Saturday outlook from the National Hurricane Center:


A tropical wave is in the E Atlantic extending from 02N to 21W
with axis near 32W, moving westward at 10 kt. The wave remains
embedded in the Saharan Air Layer, which dust and dry air is
limiting the convection to scattered moderate from 02N to 08N
between 26W and 36W.

A tropical wave is to the east of the Lesser Antilles extending
S of 20N, with axis near 57W, moving westward at 15-20 kt. The
wave is in the periphery of the Saharan Air Layer outbreak, and
only isolated showers are observed in the vicinity of the wave.

A tropical wave entering the western Caribbean extends S of 16N
with axis near 76W, moving westward 15 kt. The wave is embedded in
a strong vertical shear environment which is limiting the
convection to the vicinity of the monsoon trough.


The monsoon trough extends from 13N17W to 07N30W. The ITCZ extends
from 07N34W to 04N48W. Aside from the convection associated with
the tropical waves, scattered moderate convection is off the W
coast of Africa from 04N to 15N between 10W and 21W.


A col of low pressure in the middle levels and an inverted trough
in the upper levels is supporting a surface trough over the
Yucatan peninsula, which is generating scattered showers and tstms
in the Bay of Campeche.

The Bermuda high extends a ridge SW across the SE CONUS and into
the gulf, which supports maily moderate to locally fresh return
flow across the basin. Winds will diminish to gentle to moderate
by Mon and continue through the middle of the upcoming week.


Isolated showers and tstms are over the NW basin. Similar
convection is across the Windward Islands as the tropical wave to
the east continue to move westward.

The Bermuda High north of the area and lower pressure over N
Colombia continue to support fresh to strong NE to E trades over
the S central Caribbean and portions of the SW basin. These winds
will continue through early next week and increase in speed and
areal coverage Mon night through Wed night, reaching Hispaniola
adjacent waters. Otherwise, NE trades will become fresh to strong
Sat night and Sun night in the Windward Passage.


The entire basin is under the influence of the Bermuda high, which
is supporting moderate to fresh winds from 10N to 26N and seas
from 4 to 6 ft.

Fresh to strong E winds will occur late afternoons and evenings
north of Hispaniola for the next several days. Elsewhere, the
Bermuda High north of the area will support moderate to locally
fresh E to SE winds S of 25N through Wed night. Mainly light to
gentle variable winds will dominate elsewhere.



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