11pm EDT Friday: Last advisory on Alpha, now a post-tropical remnant low
Posted by Chris in Tampa on 9/18/2020, 10:54 pm
Post-Tropical Cyclone Alpha Discussion Number 3
NWS National Hurricane Center Miami FL AL242020
300 AM GMT Sat Sep 19 2020

METEOSAT imagery, IPMA radar data, and surface observations
indicate that Alpha has degenerated to a post-tropical remnant low
just a few miles to the southeast of Viseu, Portugal. Therefore,
this the last NHC advisory. Surface wind data support an initial
intensity of 25 kt. The rapidly deteriorating small remnant low is
expected to move generally toward the northeast at about 14 kt for
the next 6 to 12 hours before dissipating over northern Spain by
Saturday night. The NHC forecast track is basically an update of
the previous advisory and lies between the tightly clustered
deterministic guidance.

Additional information on the hazards from this system can be found
in products from the Portuguese Institute for Sea and Atmosphere at
www.ipma.pt.


FORECAST POSITIONS AND MAX WINDS

INIT 19/0300Z 40.9N 6.9W 25 KT 30 MPH...POST-TROPICAL
12H 19/1200Z 42.6N 4.4W 20 KT 25 MPH...POST-TROP/INLAND
24H 20/0000Z...DISSIPATED

$$
Forecaster Roberts
23
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12:30pm AST Friday on Alpha: 50mph; Subtropical Storm Alpha forms just off the Portugal coast from Invest 99L - Chris in Tampa, 9/18/2020, 12:47 pm
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