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BULLETIN
Tropical Storm Helene Advisory Number  32
NWS National Hurricane Center Miami FL       AL082018
500 AM AST Sat Sep 15 2018

...HELENE APPROACHING THE AZORES...
...EXPECTED TO PRODUCE TROPICAL-STORM-FORCE WINDS AND HEAVY
RAINS...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...37.7N 34.8W
ABOUT 425 MI...685 KM W OF LAJES AIR BASE IN THE AZORES
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...NNE OR 20 DEGREES AT 22 MPH...35 KM/H
MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES


WATCHES AND WARNINGS
--------------------

CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* All of the Azores Islands

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within 12
to 24 hours.

Interests in Ireland and the United Kingdom should consult products
from their local meteorological service for information about
potential impacts from Helene in those locations.  Local forecasts
and warnings for the UK can be found on the website of the UK Met
Office at https://www.metoffice.gov.uk/.  Local forecasts and
warnings for Ireland can be found on the website of Met Eireann at
https://www.met.ie/.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM AST (0900 UTC), the center of Tropical Storm Helene was
located near latitude 37.7 North, longitude 34.8 West. Helene is
moving toward the north-northeast near 22 mph (35 km/h).  A turn
toward the northeast is expected by tonight. On the forecast track,
Helene will be passing near or over the Azores tonight or on
Sunday.

Maximum sustained winds remain near 70 mph (110 km/h) with higher
gusts.  Little change in strength is forecast during the next 12
hours, but gradual weakening is expected later in the weekend.
Helene is expected to transition to an extratropical cyclone as it
approaches Ireland and the United Kingdom in a couple of days.

Tropical-storm-force winds extend outward up to 160 miles (260 km)
from the center.

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


HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm conditions are expected within portions of the
warning area later today and tonight.

RAINFALL:  Helene is expected to produce total rainfall amounts 1
to 3 inches across the western Azores, with isolated amounts up to 4
inches possible.  Rainfall amounts of 1 to 2 inches are expected
across western Ireland and Scotland.

SURF:  Swells generated by Helene are affecting portions of the
Azores.  These swells are likely to continue for another couple of
days and could cause life-threatening surf and rip current
conditions.  Please consult products from your local weather office.


NEXT ADVISORY
-------------
Next intermediate advisory at 800 AM AST.
Next complete advisory at 1100 AM AST.

$$
Forecaster Cangialosi

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