2021 Tropical Waves Thread

[cycloneye]

Puerto Rico being affected by heavy rains.

[toad strangler]

Puerto Rico being affected by heavy rains.

https://i.imgur.com/fqtwelM.gif

juicy

[cycloneye]

8 PM TWD:

A Caribbean Sea tropical wave is near 67W from 22N southward,
moving W near 20 kt. Scattered thunderstorms are noted across
Puerto Rico and the Mona Passage near the wave.

[beoumont]

There's a duck north of Puerto Rico. Could possibly be a woodpecker. 40 Percent chance of fowl weather.

[cycloneye]

8 AM TWD:

A Caribbean Sea tropical wave is along 72W from 22N southward,
moving W 15-20 kt. This wave continues to interact with an upper-
level low across the extreme SE Bahamas, and is generating
scattered to locally numerous moderate to strong convection from
the NE coast of Puerto Rico to 27N between 64W and 70W. The low
level wind surge and Saharan Air accompanying this wave has moved
NW ahead of the wave and reaches as far north as 29N and as far
west as 74W.

[cycloneye]

2 PM TWD:

A Caribbean Sea tropical wave is along 72W from central Hispaniola
to northwest Venezuela, moving W at 10 kt. The tropical wave is
moving west of an upper level low centered off northern Haiti.
Dry, subsident air in the northerly flow on the west side of this
upper low is inhibiting any major convection near the tropical
wave.

[cycloneye]

8 PM TWD:

A Caribbean Sea tropical wave is along 73W from central
Hispaniola to northeast Colombia, moving W at 10 kt. The tropical
wave is moving west of an upper level low centered off northern
Haiti. Dry, subsident air in the northerly flow on the west side
of this upper low, along with lingering, dry Saharan air, are
inhibiting any major convection near the tropical wave.

[cycloneye]

8 AM TWD:

The wave has split with one part to the north and the other in the Caribbean sea. The Caribbean Sea part will cross into the EPAC and may be the trigger for developmernt there.

A Caribbean tropical wave is along 73W from western Hispaniola to
northeast Colombia, moving W at 10 kt. The majority of moisture
and energy accompanying this wave has moved northwestward and
across the Atlantic waters east of 75W, as far north as 30N. The
remaining portion of the tropical wave across the Caribbean has
moved under an upper-level low centered off northern Haiti. Dry,
subsident air in the northerly flow on the west side of this upper
low, along with lingering, dry Saharan air, is inhibiting
convection north of 15N near the tropical wave. However, scattered
clusters of moderate to strong convection are occurring south of
15N to coastal Colombia from 72W to 79W, and is being enhanced by
an upper level jet south of the upper level low.

[cycloneye]

2 PM TWD:

A Caribbean tropical wave is along 75W, from western Haiti to
northern Colombia, moving W at 10 kt. Scattered moderate to
isolated strong convection is noted within 270 nm of the wave axis
from 13N to 16N and between 72W and 79W. The wave is also
enhancing the development of showers and thunderstorms over
eastern Colombia and western Venezuela.

[cycloneye]

8 PM TWD:

A tropical wave is in the central Caribbean extending S of 20N
with axis near 75W, moving W at 10-15 kt. Upper level divergence
is supporting scattered showers and isolated tstms over
Hispaniola and its adjacent waters.

[cycloneye]

8 AM TWD:

A tropical wave is in the central Caribbean extending S of 20N
with axis near 79W, moving W at 10-15 kt. Upper-level divergence
is supporting scattered showers and isolated tstms from Jamaica to
coastal Nicaragua.

[cycloneye]

We decided to have a thread for the tropical waves instead of having different ones for each one.




A new Tropical Wave has been introduced and is emerging from West Africa but the chances for development are slim because conditions are not favorable but neverless will be tracking it.

[Category5Kaiju]

A new Tropical Wave has been introduced and is emerging from West Africa but the chances for development are slim because conditions are not favorable but neverless will be tracking it.

https://i.imgur.com/ZTxdB2l.jpg

https://i.imgur.com/EFH4QTf.png

Gotta say, contrary to what some folks on social media platforms like Twitter have been saying recently with the lull in activity, the ITCZ has been pretty active despite a suppressive phase.

[Nimbus]

Some convection with inflow off coastal Nicaragua which might make it to the western Caribbean if it gains a little latitude.

[cycloneye]

2 PM TWD:

An Atlantic tropical wave has been introduced near the coast of
Africa along axis 17W, south of 18N, based on satellite imagery,
tropical wave diagnostic and the Hovmoller diagram. Scattered
moderate convection in noted from 07N to 13N and between the
coast of Africa to 19W. The northern portion of the wave is
surrounded by dry and dusty Saharan Air Layer, resulting in no
convection.

[cycloneye]

2 PM TWD:

Another Caribbean tropical wave is along 80W, south of 19N, and
moving W at 10-15 kt. Upper-level divergence is supporting
scattered showers and isolated tstms from 13N to 19N and between
78W to 82W.

[GCANE]

Looks like the African Easterly Jet (at 500mb) diverges at 40W.
Usually it is at 50W.
See what happens when it gets to 40W.

[cycloneye]

8 PM TWD:

A tropical wave is in the E Atlc extdending from 05N to 18N with
axis near 19W, movin W at 5-10 kt. Scattered moderate convection
is from 06N to 12N between 13W and 27W.

[cycloneye]

8 PM TWD:

A tropical wave is in the western Caribbean S of 20N with axis
near 81W, moving W at 10-15 kt. Scattered moderate isolated strong
convection is from 15N to 21N between 76W and 84W.

[abajan]

It appears that this afternoon western Jamaica got a great deal of lightning from this wave.