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Tropical Depression Five-E Discussion Number 2
NWS National Hurricane Center Miami FL EP052023
1000 PM CDT Mon Jul 31 2023
Tropical Depression Five-E is starting to become a little better
organized this evening. Microwave AMSR and SSMIS passes showed that
the center of the system has banding features over the northern and
eastern side, with deep convection bursting from time to time.
Subjective Dvorak intensity estimates from TAFB and SAB were both
T2.0/30-kt on this advisory cycle. Given these estimates, the
initial intensity remains at 30 kt.
The initial motion of the depression is 290/12 kt. A mid-level
subtropical ridge is located to the north of the system and is
expected to continue to steer the cyclone generally westward. The
ridge may strengthen some towards the end of the week, causing a
south of west motion. The track guidance is fairly tightly
clustered, and the forward speed of the corrected consensus
guidance, HCCA, is now closer to the rest of the forecast aids this
cycle. The NHC track is very similar to the previous forecast, with
a slightly faster forward motion.
The system is in an environment that appears favorable for
intensification over the next few days. Vertical wind shear will
remain low throughout the forecast period with warm sea-surface
temperatures during the next several days. The cyclone is forecast
to quickly intensify with a relatively small convective core.
Intensity guidance has increased this cycle with SHIPS, HCCA, and
the hurricane regional models showing significant strengthening
over the next 24-72 hours. While a period of rapid intensification
is becoming more likely during the next few days, it is difficult
to pin down an exact time frame of when that may occur right now.
The intensity forecast was raised from the previous advisory to
account for some of the higher guidance this cycle, but still lies
below the HCCA and most of the hurricane regional models.
FORECAST POSITIONS AND MAX WINDS
INIT 01/0300Z 15.5N 105.3W 30 KT 35 MPH
12H 01/1200Z 15.9N 107.3W 40 KT 45 MPH
24H 02/0000Z 15.9N 110.0W 50 KT 60 MPH
36H 02/1200Z 15.6N 112.7W 65 KT 75 MPH
48H 03/0000Z 15.2N 115.4W 75 KT 85 MPH
60H 03/1200Z 14.7N 118.1W 90 KT 105 MPH
72H 04/0000Z 14.2N 121.0W 95 KT 110 MPH
96H 05/0000Z 13.3N 126.8W 90 KT 105 MPH
120H 06/0000Z 12.9N 132.7W 85 KT 100 MPH
$$
Forecaster Kelly/Blake
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