Atlantic Basin Tropical Cyclones

Hurricane Sam Public Advisory


000
WTNT33 KNHC 261442
TCPAT3

BULLETIN
Hurricane Sam Advisory Number  16
NWS National Hurricane Center Miami FL       AL182021
1100 AM AST Sun Sep 26 2021

...SAM CONTINUES MOVING SLOWLY WEST-NORTHWESTWARD AS A CATEGORY 4
HURRICANE...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.9N 50.2W
ABOUT 905 MI...1455 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H
PRESENT MOVEMENT...WNW OR 290 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 1100 AM AST (1500 UTC), the center of Hurricane Sam was located
near latitude 13.9 North, longitude 50.2 West.  Sam is moving toward
the west-northwest near 8 mph.  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.

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 500 PM AST.

$$
Forecaster Hagen/Pasch



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