Skip Navigation Links
NOAA NOAA United States Department of Commerce

Parts of the U.S. Government are closed. However, because the information this site provides is necessary to protect life and property, it will be updated and maintained during the Federal Government shutdown. For critical weather information, please visit www.weather.gov. To learn more, see www.commerce.gov.

Tropical Storm HELENE


ZCZC MIATCPAT3 ALL
TTAA00 KNHC DDHHMM

BULLETIN
Tropical Storm Helene Advisory Number   5
NWS National Hurricane Center Miami FL       AL082018
1100 AM AST Sat Sep 08 2018

...HELENE CONTINUING WESTWARD TOWARD THE SOUTHERN CABO VERDE
ISLANDS...
...TROPICAL STORM CONDITIONS EXPECTED TO REACH PORTIONS OF THE CABO
VERDE ISLANDS TONIGHT...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.4N 20.6W
ABOUT 270 MI...440 KM ESE OF THE SOUTHERNMOST CABO VERDE ISLANDS
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...W OR 265 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Watch is in effect for...
* The Cabo Verde islands of Santiago, Fogo, and Brava

A Tropical Storm Warning is in effect for...
* The Cabo Verde islands of Santiago, Fogo, and Brava

A Hurricane Watch means that hurricane conditions are possible
within the watch area, in this case within the next 24 to 36 hours.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within the
next 24 to 36 hours.

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 1100 AM AST (1500 UTC), the center of Tropical Storm Helene was
located near latitude 13.4 North, longitude 20.6 West. Helene is
moving toward the west near 13 mph (20 km/h) and this general
motion will likely continue through Sunday.  A gradual turn toward
the west-northwest with an increase in forward speed is expected
Sunday night through Tuesday.  On the forecast track, Helene will
pass very close to the southern Cabo Verde Islands tonight and early
Sunday.

Maximum sustained winds are near 45 mph (75 km/h) with higher gusts.
Strengthening is forecast for the next couple of days, and Helene is
expected to become a hurricane on Sunday or Sunday night.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
from the center.

The estimated minimum central pressure is 1001 mb (29.56 inches).


HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm conditions are expected to first reach the
warning area tonight or early Sunday.  Hurricane conditions are
possible in the southernmost Cabo Verde Islands on Sunday.

RAINFALL:  Helene is expected to produce total rain accumulations of
3 to 5 inches over the southern Cabo Verde Islands through Sunday,
with isolated maximum amounts of 8 inches. This rainfall may produce
life-threatening flash floods.


NEXT ADVISORY
-------------
Next intermediate advisory at 200 PM AST.
Next complete advisory at 500 PM AST.

$$
Forecaster Beven

NNNN