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Post-Tropical Cyclone Douglas Public Advisory


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000
WTPA32 PHFO 291435
TCPCP2

BULLETIN
Post-Tropical Cyclone Douglas Advisory Number  37
NWS Central Pacific Hurricane Center Honolulu HI   EP082020
500 AM HST Wed Jul 29 2020

...DOUGLAS DEGENERATES TO A POST-TROPICAL LOW...
...WILL CROSS THE INTERNATIONAL DATE LINE LATER TODAY...


SUMMARY OF 500 AM HST...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...24.7N 175.4W
ABOUT 1135 MI...1830 KM WNW OF HONOLULU HAWAII
ABOUT 270 MI...435 KM SSE OF MIDWAY ISLAND
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 23 MPH...37 KM/H
MINIMUM CENTRAL PRESSURE...1012 MB...29.89 INCHES


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

The Tropical Storm Warning for portions of the Papahanaumokuakea
Marine National Monument from Maro Reef to Lisianski has been
discontinued.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

None.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM HST (1500 UTC), the center of Post-Tropical Cyclone
Douglas was located near latitude 24.7 North, longitude 175.4 West.
The post-tropical cyclone is moving toward the west near 23 mph (37
km/h), and this general motion is expected to continue until Douglas
crosses the International Date Line later today.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Weakening is forecast, and Douglas is expected to dissipate shortly 
after crossing the Date Line.

The estimated minimum central pressure is 1012 mb (29.89 inches).


HAZARDS AFFECTING LAND
----------------------
SURF: Large seas and swells generated by Douglas will impact
portions of the Papahanaumokuakea Marine National Monument west of
Maro Reef today, then diminish tonight.


NEXT ADVISORY
-------------
This is the last public advisory issued by the Central Pacific
Hurricane Center on this system. Additional information on the
post-tropical low can be found in high seas forecasts issued by the
National Weather Service under AWIPS head HFOHSFNP, WMO header
FZPN40 PHFO, and on the web at https://www.weather.gov/hfo/HSFNP.

$$
Forecaster Birchard