2023 Tropical Waves

[Teban54]

[cycloneye]

Waves at 12:05 UTC on 8/4/23.

An eastern Atlantic tropical wave axis is along 29W from 05N to
20N, moving west at 15 kt. Scattered moderate isolated strong
convection is noted from 08N to 13N between 28W and 36W.

A central Atlantic tropical wave extends its axis NNW-SSE from
21N46W to 06N44W, moving west at 15-20 kt. Scattered moderate
convection is seen from 06N to 10N between 43W and 49W, and from
15N to 18N between 46W and 49W.

An eastern Caribbean tropical wave is along 62W from 21N
southward, moving west at 15 to 20 kt. Isolated moderate
convection is noted from 15N to 21N between 62W and 69W, including
near Puerto Rico.

[abajan]

Link: https://youtu.be/l7ugso9thzM

[cycloneye]

Waves at 12:05 UTC on 8/5/23.

An eastern Atlantic tropical wave is near 36W from 06N to 20N,
moving west at 15 to 20 kt. Scattered moderate convection is seen
within 210 nm W and 60 nm E of the wave axis from 08N to 11N.

The northern portion of a central Atlantic tropical wave, near
54W from 15N to 22N, has broken off and shot out well ahead of
the southern portion of the tropical wave, which is near 47W from
06N to 15N. The northern portion of the wave is moving W at 20 kt.
The southern portion of the wave is moving W at 10 to 15 kt. The
northern portion shows up well as a surface trough in ASCAT
satellite data from Fri evening. Scattered moderate convection is
present from 07N to 10N between 47W and 56W, and from 16N to 21.5N
between 54W and 59W.

An eastern Caribbean tropical wave is near 68/69W from 23N
southward through the Mona Passage to western Venezuela. It is
moving west at 15 kt. Scattered showers and isolated tstorms are
located near and just W of the wave axis, near the S coast of the
Dominican Republic. Similar activity is seen within 240 nm E of
the wave axis from 13N-18N.

A tropical wave along 95W extends from the Bay of Campeche near
20N southward through southern Mexico to the Pacific Ocean. The
tropical wave is moving W around 10 kt, in tandem with an upper-
level trough. Numerous moderate scattered strong convection is
occurring over the SW Bay of Campeche from 18N to 21N between 93W
and 96.5W.

[abajan]

[zzzh]

Interesting structure.

[cycloneye]

Waves at 12:05 UTC on 8/6/23.

An eastern Atlantic tropical wave is near 29W from 04N to 16N,
moving W at 15 kt. Scattered moderate to strong convection is
noted west of the wave axis from 04N-10N between 30W-40W. This
system is forecast to cross the Lesser Antilles Wed night and move
into the E Caribbean early Thu, bringing enhanced showers and
thunderstorms, as well as potentially strong winds and building
seas.

A central Atlantic tropical wave is near 43W from 21N southward,
and moving west around 15 kt. Little to no significant convection
is occurring due to the presence of this tropical wave.

An eastern Caribbean tropical wave is along 63W from 12N to 23N,
and moving west at 15 to 20 kt. Isolated thunderstorms are
occurring from Puerto Rico northward to 24N between 62W and 67W.

A central Caribbean tropical wave is near 74W from 20N southward
to Colombia, and moving west at 10 to 15 kt. Scattered
thunderstorms are occurring along the northern end of the wave
from 17N to 20N between 74W and 77W, including over the waters
between Haiti, Jamaica and SE Cuba.

[abajan]

Waves at 12:05 UTC on 8/6/23.

An eastern Atlantic tropical wave is near 29W from 04N to 16N,
moving W at 15 kt. Scattered moderate to strong convection is
noted west of the wave axis from 04N-10N between 30W-40W. This
system is forecast to cross the Lesser Antilles Wed night and move
into the E Caribbean early Thu, bringing enhanced showers and
thunderstorms, as well as potentially strong winds and building
seas.

...

Link: https://youtu.be/3vA_DqKHGU4

[cycloneye]

Recon for research in Central Atlantic for Monday and Tuesday.

I. ATLANTIC REQUIREMENTS
1. NEGATIVE RECONNAISSANCE REQUIREMENTS.
2. OUTLOOK FOR SUCCEEDING DAY.....NEGATIVE.
3. REMARK: THE NOAA 49 G-IV AND THE NOAA 43 P-3 AIRCRAFT WILL BE
CONDUCTING 8-HOUR RESEARCH MISSIONS OVER THE CENTRAL ATLANTIC,
DEPARTING TBPB AT 07/2200Z AND 08/1000Z, RESPECTIVELY.

[abajan]

Lots of action east of the Lesser Antilles:

[cycloneye]

Waves at 12:05 UTC on 8/7/23.

An eastern Atlantic tropical wave is near 22W from 16N southward,
moving west around 10 to 15 kt. Scattered moderate convection is
noted from 10N to 15N between 19W and 23W.

A central Atlantic tropical wave is near 38W from 16N southward,
and moving west around 20 kt. Scattered moderate convection is
noted from 06N to 12N between 40W and 42W. This wave is forecast
to approach the Lesser Antilles around midweek, increasing the
chance of thunderstorms and gusty winds.

A western Atlantic tropical wave is near 53W from 20N southward,
and moving west at 15 to 20 kt. Scattered showers and
thunderstorms are noted from 15N to 21N between 51W and 55W.

An central Caribbean tropical wave is near 70W from Hispaniola
southward into northwestern Venezuela. It is moving west around 15
kt. No significant convection is noted at this time.

A western Caribbean tropical wave is near 82W from 19N southward
across central Panama into the East Pacific. It is moving west
around 15 kt. Scattered showers and isolated thunderstorms are
occurring along the southern coast of Cuba and nearby waters.
Isolated thunderstorms are present farther west in the Gulf of
Honduras, and adjacent to the Caribbean coast of Costa Rica and
Panama.

[cycloneye]

 https://twitter.com/AndyHazelton/status/1688512513967599616

[abajan]

Link: https://youtu.be/dPXsTxqP5k4

[cycloneye]

Waves at 12:05 UTC on 8/8/23.

An eastern Atlantic tropical wave has its axis along 28W, south
of 16N, moving westward at 10 kt. No deep convection is noted
near the wave axis.

A central Atlantic tropical wave has its axis along 47W, south of
17N, moving westward at 10 kt. Scattered moderate convection is
observed from 05N to 09N and between 47W and 51W.

A tropical wave is near the Lesser Antilles, with its axis along
61W, south of 21N, moving westward at 10-15 kt. Scattered
moderate to isolated strong convection is noted from 16N to 22N
between 58W and 63W.

A central Caribbean tropical wave has its axis along 78W, south
of 20N, moving westward at 15 kt. Numerous moderate to scattered
strong convection is noted near the monsoon trough and the wave
axis, S of 11N between 76W and 80W.

[abajan]

Link: https://youtu.be/7Tvw92AF-Cs

[cycloneye]

New wave introduced at 00:05 UTC on 8/9/23.

An eastern Atlantic tropical wave has emerged from the west coast
of Africa and is located near 20W, south of 18N, moving westward
around 10 to 15 kt. Scattered moderate convection is noted from
04N to 12N between 14W and 23W.

[Jr0d]

It will probably be gone tomorrow, but there is a naked swirl around 22.3N 69W, North of the Dominican Republic where the wave popped and fizzled today.

Just an interesting feature.

[cycloneye]

As soon the NHC site works again, the waves present today on the Atlantic and Caribbean will be posted.

[abajan]

As soon the NHC site works again, the waves present today on the Atlantic and Caribbean will be posted.

So, that's what it is! I was wondering why the TWO wasn't updating.

[Extratropical94]

You can still access all of their text products at https://tgftp.nws.noaa.gov/data/raw/.

Just look for the header of the product you want. You can find it at the top of every text product.
For instance, the tropical weather discussions for the Atlantic are listed under header AXNT20

AXNT20 KNHC 101144
TWDAT

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1205 UTC Thu Aug 10 2023

If you go to https://tgftp.nws.noaa.gov/data/raw/, then click on the directory with the same first two letters as the header you look for (ax/), you will see all products with headers starting with these two letters.

TWD https://tgftp.nws.noaa.gov/data/raw/ax/ ... twd.at.txt

This also works for TWOs (ABNT20 for the Atlantic, ABPZ20 for the East Pacific), advisories (WTNT/WTPA/WTPZ) and lots of other stuff

From the current discussion:

An eastern Atlantic tropical wave has its axis along 23W, south
of 17N, and is moving slowly westward at 5-10 kt. Scattered
moderate convection is observed from 06N to 11N and east of 27W.

Another eastern Atlantic tropical wave has its axis along 36W/37W,
south of 17N, and is moving slowly westward at 5 kt. Scattered
moderate convection is noted from 05N to 09N and between 28W and
44W.

An eastern Caribbean tropical wave has its axis along 65W, south
of 20N, moving W at 20 kt. Scattered moderate convection is
evident from 16N to 18N and between 65W and 67W.

A central Caribbean tropical wave has its axis along 77W, south
of 21N, moving W at 10 kt. No significant convection is noted
over water.