NOAA Hurricane Hunters twice found maximum flight level winds of over 150 mph this evening.
The pressure dropped to 943 millibars.
The eye is very tight at 6 nautical miles in diameter.
The forecast is that the hurricane will turn northwest and miss the Caribbean islands.
Here is the text of the 10 p.m. notice:
Hurricane Sam Notice Number 14
National Hurricane Center NWS Miami FL AL182021
11:00 PM AST Sat, Sep 25, 2021
… NOAA HURRICANE HUNTER AIRCRAFT FIND SAM CONTINUED TO
INTENSIFY QUICKLY …
… LIKELY CURRENT FLUCTUATIONS DURING THE FOLLOWING DAY OR SO…
SUMMARY OF 23:00 AST… 0300 UTC… INFORMATION
LOCATION … 13.5N 49.0W
APPROXIMATELY 990 MI… 1,595 KM EAST OF THE NORTHERN SOUTHERN ISLANDS
MAXIMUM SUSTAINED WINDS… 145 MPH… 230 KM / H
CURRENT 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 11:00 a.m. AST (0300 UTC), the center of Hurricane Sam was located
near latitude 13.5 North, longitude 49.0 West. Sam walks over to
west-northwest near 8 mph (13 km / h), and this general movement is
is expected to continue until Sunday. A turn to the northwest is
Maximum sustained winds are near 145 mph (230 km / h) with
gusts. Sam is a Category 4 hurricane on the Saffir-Simpson
Hurricane wind scale. Intensity fluctuations are likely
Begining of the next week.
Sam remains a little hurricane. Hurricane-force winds spread outward
up to 30 miles (45 km) from center and tropical storm force
winds extend outward for 105 miles (165 km).
The minimum central pressure estimated based on NOAA data
reconnaissance plane is 943 mb (27.85 inches).
RISKS AFFECTING LAND
SURF: the swells generated by Sam should reach the Petit
West Indies early next week. These swells could be life threatening
surf and tear up the current conditions. Please see the products in your
local weather office.
Next full advisory at 500 hrs AST.
Category: Alabama Weather, ALL POSTS, Tropical