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464
WTNT33 KNHC 161442
TCPAT3

BULLETIN
Post-Tropical Cyclone Helene Advisory Number 37
NWS National Hurricane Center Miami FL AL082018
1100 AM AST Sun Sep 16 2018


...HELENE NOW A POST-TROPICAL CYCLONE...
...THIS IS THE LAST ADVISORY...



SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...43.8N 25.7W ABOUT 405 MI...655 KM N OF THE AZORES MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NE OR 55 DEGREES AT 29 MPH...46 KM/H MINIMUM CENTRAL PRESSURE...989 MB...29.21 INCHES



WATCHES AND WARNINGS
--------------------
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

None.

Interests in Ireland and the United Kingdom should consult products from their local meteorological service for information about potential impacts from Post-Tropical 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
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At 1100 AM AST (1500 UTC), the center of Post-Tropical Cyclone Helene was located near latitude 43.8 North, longitude 25.7 West. The post-tropical cyclone is moving toward the northeast near 29 mph (46 km/h), and this motion is expected to continue with an increase in forward speed during the next 24 hours. On the forecast track, the post-tropical cyclone will approach Ireland and the United Kingdom on Monday.

Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Some slight strengthening is possible today. Some weakening is expected by Monday, and the system is forecast to be absorbed by another low pressure area by early Tuesday.

Tropical-storm-force winds extend outward up to 230 miles (370 km) from the center.

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



HAZARDS AFFECTING LAND
----------------------
Information on rainfall and wind forecasts for Ireland can be found in products issued by Met Eireann at www.met.ie and for the United Kingdom in products issued by the United Kingdom Met Office at www.metoffice.gov/uk.

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



NEXT ADVISORY
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This is the last public advisory issued by the National Hurricane Center on this system. Additional information on this system can be found in High Seas Forecasts issued by Meteo France under WMO header FQNT50 LFPW and available on the web at: http://www.meteofrance.com/previsions-meteo-marine/bulletin. Additional information can also be found in High Seas Forecast issued by the UK Met Office under WMO header FQNT21 EGRR and on the web at: http://www.metoffice.gov.uk/public/weather/marine-high-seas/.

$$ Forecaster Brown



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