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WTNT35 KNHC 222034

TCPAT5

 

BULLETIN

Hurricane Tammy Advisory Number  18

NWS National Hurricane Center Miami FL       AL202023

500 PM AST Sun Oct 22 2023

 

...HEAVY RAINS LINGER ACROSS THE LEEWARD ISLANDS...

 

 

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION

----------------------------------------------

LOCATION...19.9N 63.4W

ABOUT 120 MI...190 KM N OF ANGUILLA

MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H

PRESENT MOVEMENT...NW OR 325 DEGREES AT 9 MPH...15 KM/H

MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES

 

 

WATCHES AND WARNINGS

--------------------

There are no coastal watches or warnings in effect.

 

 

DISCUSSION AND OUTLOOK

----------------------

At 500 PM AST (2100 UTC), the center of Hurricane Tammy was located

near latitude 19.9 North, longitude 63.4 West.  Tammy is moving

toward the northwest near 9 mph (15 km/h).  A turn toward the north

is expected late tonight, followed by a north-northeast or

northeast motion on Monday and Tuesday.

 

Maximum sustained winds are near 85 mph (140 km/h) with higher

gusts.  Some slight strengthening is possible during the next few 

days.

 

Hurricane-force winds extend outward up to 25 miles (35 km) from the

center and tropical-storm-force winds extend outward up to 115 miles

(185 km).

 

The estimated minimum central pressure is 988 mb (29.18 inches).

 

 

HAZARDS AFFECTING LAND

----------------------

Key messages for Tammy can be found in the Tropical Cyclone

Discussion under AWIPS header MIATCDAT5 and WMO header WTNT45 KNHC

and on the web at hurricanes.gov/text/MIATCDAT5.shtml

 

RAINFALL: Tammy is expected to produce the following storm total

rainfall:

 

Leeward Islands: 4 to 8 inches with storm total maximum amounts of

12 inches

 

Martinique and Dominica: Additional 2 to 4 inches, storm total

maximum 6 inches

 

British and U.S. Virgin Islands into eastern Puerto Rico: 1 to 2

inches with maximum storm total amounts of 4 inches

 

These rains may produce isolated flash and urban flooding, along

with isolated mudslides in areas of higher terrain.

 

SURF:  Swells generated by Tammy will continue to affect portions of

the Lesser Antilles during the next few days.  These swells are

likely to cause life-threatening surf and rip current conditions.

Please consult products from your local weather office.

 

 

NEXT ADVISORY

-------------

Next complete advisory at 1100 PM AST.

 

$$

Forecaster Cangialosi