• STORM FLOATER •
TROPICAL CYCLONE 09L (ISAIAS)
***FINAL BULLETIN***
PUBLIC ADVISORY #16
FORCE THIRTEEN SINGAPORE, SINGAPORE
0150 UTC WED AUG 5 2020

...ISAIAS LIKELY TO TRANSITION INTO A POST-TROPICAL CYCLONE...

SUMMARY OF 0000 UTC...INFORMATION
-----------------------------------
LOCATION...NEAR 43.6 N 73.0 W...
MAXIMUM SUSTAINED WINDS...50MPH...80KM/H
MINIMUM CENTRAL PRESSURE...997MB

WATCHES AND WARNINGS
-----------------------------------
A Tropical Storm Warning is in effect for...
* Watch Hill Rhode Island to Stonington Maine
* Martha's Vineyard, Nantucket, and Block Island


DISCUSSION
-----------------------------------

NOAA Doppler radar data from Islip, New York (KOKX), indicated 
70-kt winds just off the surface south of Long Island earlier this 
afternoon, along with buoy reports from New York Harbor Inlet 
(44065) that supported lowering the intensity to 55 kt. The motion remains north-northeastward or 020/35 kt. Isaias will 
continue moving north-northeastward through tonight, accompanied by 
a gradual decrease in forward speed. In 12 hours or, the cyclone is 
expected to interact with a larger extratropical over southeastern 
Canada and degenerate into a post-tropical cyclone near western 
Maine. By 24 hours, Isaias is expected to transition to an 
extratropical low, and dissipate or become absorbed by the 
aforementioned larger extratropical low. The new NHC track forecast 
is just an extension of the previous advisory, and lies very close 
to the tightly clustered consensus track models.

Isaias will continue to gradually spin down and lose its tropical 
characteristics. The precipitation has decreased in size and also 
has become more stratiform in appearance, which are indications that 
the cyclone is gradually weakening. This downward trend should 
continue until Isais becomes an extratropical low in 12-24 hours.
• RAMMB Multi-Model Diagnostic Comparison •
LOCAL AND OFFICIAL SOURCES BELOW
National Hurricane Center (Atlantic)

THIS IS THE LAST REGULARLY SCHEDULED BULLETIN, NO MORE BULLETINS WILL BE ISSUED.

$$
Forecaster Harvey
• OFFICIAL FWC-N FORECAST •
• NATIONAL HURRICANE CENTER FORECAST •

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