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BULLETIN
Hurricane Helene Advisory Number  10
NWS National Hurricane Center Miami FL       AL082018
500 PM AST Sun Sep 09 2018

...HELENE BECOMES A HURRICANE SOUTHWEST OF THE CABO VERDE ISLANDS...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...13.4N 26.0W
ABOUT 145 MI...230 KM SW OF THE SOUTHERNMOST CABO VERDE ISLANDS
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...992 MB...29.30 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

The government of the Cabo Verde Islands has discontinued the
Hurricane Watch and Tropical Storm Warning for the Cabo Verde
islands of Santiago, Fogo, and Brava.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 500 PM AST (2100 UTC), the center of Hurricane Helene was located
near latitude 13.4 North, longitude 26.0 West. Helene is moving
toward the west near 13 mph (20 km/h), and a turn toward the
west-northwest is expected on Monday, with a continued
west-northwestward motion through Tuesday.  On the forecast track,
the center of Helene will continue to move away from the Cabo Verde
Islands.

Maximum sustained winds have increased to near 75 mph (120 km/h)
with higher gusts.  Additional strengthening is forecast during the
next 48 hours.

Hurricane-force winds extend outward up to 15 miles (30 km) from the
center and tropical-storm-force winds extend outward up to 80 miles
(130 km).

The estimated minimum central pressure is 992 mb (29.30 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL:  Helene is expected to produce total rain accumulations of
2 to 4 inches over the southern Cabo Verde Islands through today,
with isolated maximum amounts of 6 inches.  This rainfall may
produce life-threatening flash floods.


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

$$
Forecaster Pasch

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