000
WTNT33 KNHC 251440
TCPAT3
 
BULLETIN
Hurricane Sam Advisory Number  12
NWS National Hurricane Center Miami FL       AL182021
1100 AM AST Sat Sep 25 2021
 
...SMALL BUT DANGEROUS SAM NOW A MAJOR HURRICANE...
...SOME ADDITIONAL STRENGTHENING EXPECTED THIS WEEKEND...
 
 
SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...12.9N 47.6W
ABOUT 1095 MI...1760 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...960 MB...28.35 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 12.9 North, longitude 47.6 West. Sam is moving toward
the west-northwest near 10 mph (17 km/h). A slower motion to the
west-northwest is expected over the weekend, followed by a turn to
the northwest on Monday. 
 
Maximum sustained winds have increased to near 120 mph (195 km/h) 
with higher gusts.  Sam is a category 3 hurricane on the 
Saffir-Simpson Hurricane Wind Scale.  Additional strengthening is 
expected over the next day or so, and Sam is forecast to become a 
category 4 hurricane by Sunday. Some fluctuations in the hurricane's 
intensity are possible early next week. 
 
Sam is a small hurricane. Hurricane-force winds extend outward up to 
25 miles (35 km) from the center and tropical-storm-force winds 
extend outward up to 105 miles (165 km).
 
The estimated minimum central pressure is 960 mb (28.35 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by Sam are forecast to reach the Lesser
Antilles early next 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 Latto