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BULLETIN
Tropical Storm Helene Advisory Number  34
NWS National Hurricane Center Miami FL       AL082018
500 PM AST Sat Sep 15 2018

...HELENE NEARING THE WESTERN AZORES...
...EXPECTED TO PRODUCE TROPICAL-STORM-FORCE WINDS AND LOCALLY
HEAVY RAINS...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...40.2N 32.1W
ABOUT 75 MI...120 KM NW OF FLORES ISLAND IN THE WESTERN AZORES
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NE OR 45 DEGREES AT 24 MPH...39 KM/H
MINIMUM CENTRAL PRESSURE...989 MB...29.21 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 PM AST (2100 UTC), the center of Tropical Storm Helene was
located near latitude 40.2 North, longitude 32.1 West.  Helene is
moving toward the northeast near 24 mph (39 km/h), and this motion
is expected to continue with an increase in forward speed during the
next couple of days.  On the forecast track, Helene should pass near
or over the western Azores tonight and then approach Ireland and the
United Kingdom Sunday night and Monday.

Maximum sustained winds are now near 65 mph (100 km/h) with higher
gusts.  Little change in strength is forecast through Monday, but
Helene is expected to transition to an extratropical cyclone as it
approaches Ireland and the United Kingdom.

Tropical-storm-force winds extend outward up to 185 miles (295 km)
from the center.

The estimated minimum central pressure is 989 mb (29.21 inches).


HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm conditions are spreading across portions of
the warning area at this time.  These conditions should continue
through tonight.

RAINFALL:  Helene is expected to produce total rainfall amounts 1
to 2 inches across the far western Azores.  Rainfall amounts of 1 to
2 inches (25 to 50 mm) 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 PM AST.
Next complete advisory at 1100 PM AST.

$$
Forecaster Beven

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