000
WTNT33 KNHC 260847
TCPAT3

BULLETIN
Hurricane Sam Advisory Number  15
NWS National Hurricane Center Miami FL       AL182021
500 AM AST Sun Sep 26 2021

...SAM REMAINS A CATEGORY FOUR HURRICANE...
...FLUCTUATIONS IN INTENSITY LIKELY DURING THE NEXT DAY OR SO...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...13.8N 49.7W
ABOUT 940 MI...1510 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM AST (0900 UTC), the center of Hurricane Sam was located 
near latitude 13.8 North, longitude 49.7 West.  Sam is moving toward 
the west-northwest near 8 mph (13 km/h).  This general motion is 
expected to continue today, followed by a turn toward the northwest 
on Monday.  Then, a northwestward motion is forecast to continue 
through midweek.

Maximum sustained winds are near 145 mph (230 km/h) with higher 
gusts.  Sam is a category 4 hurricane on the Saffir-Simpson 
Hurricane Wind Scale.  Some fluctuations in intensity are expected 
during the next day or so.  Thereafter, some slow weakening is 
forecast.

Sam is a small hurricane.  Hurricane-force winds extend outward up 
to 30 miles (45 km) from the center and tropical-storm-force winds 
extend outward up to 90 miles (150 km).

The estimated minimum central pressure is 943 mb (27.85 inches).


HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by Sam are forecast to reach the Lesser
Antilles early this week. These swells could cause life-threatening
surf and rip current conditions. Please consult products from your
local weather office.


NEXT ADVISORY
-------------
Next complete advisory at 1100 AM AST.

$$
Forecaster Reinhart