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Old 15th September 2018, 18:28
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pompeyfan United Kingdom pompeyfan is offline
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Location: Isle of Wight
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BULLETIN
Tropical Storm Helene Advisory Number 33
NWS National Hurricane Center Miami FL AL082018
1100 AM AST Sat Sep 15 2018

...HELENE TURNING NORTHEASTWARD TOWARD THE AZORES...
...EXPECTED TO PRODUCE TROPICAL-STORM-FORCE WINDS AND LOCALLY HEAVY
RAINS...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...38.8N 34.0W
ABOUT 155 MI...250 KM WSW OF FLORES ISLAND IN THE WESTERN AZORES
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...NE OR 35 DEGREES AT 21 MPH...33 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 1100 AM AST (1500 UTC), the center of Tropical Storm Helene was
located near latitude 38.8 North, longitude 34.0 West. Helene is
moving toward the northeast near 21 mph (33 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 later today or tonight and then
approach Ireland and the United Kingdom Sunday night and Monday.

Maximum sustained winds are near 70 mph (110 km/h) with higher
gusts. Little change in strength is forecast today, but gradual
weakening is expected beginning tonight or on Sunday. 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 988 mb (29.18 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected within portions of the
warning area within the next several hours. 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 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 200 PM AST.
Next complete advisory at 500 PM AST.





https://www.nhc.noaa.gov/storm_graph...png/054223.png
__________________
David