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BULLETIN
Hurricane Rosa Advisory Number  12
NWS National Hurricane Center Miami FL       EP202018
800 PM PDT Thu Sep 27 2018

...ROSA BECOMES THE SEVENTH CATEGORY 4 HURRICANE OF THE SEASON...


SUMMARY OF 800 PM PDT...0300 UTC...INFORMATION
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LOCATION...16.9N 116.7W
ABOUT 605 MI...975 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H
PRESENT MOVEMENT...W OR 265 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...940 MB...27.76 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.


DISCUSSION AND OUTLOOK
----------------------
At 800 PM PDT (0300 UTC), the center of Hurricane Rosa was located
near latitude 16.9 North, longitude 116.7 West. Rosa is moving
toward the west near 9 mph (15 km/h).  A gradual turn toward the
west-northwest and northwest is expected on Friday, followed by a
turn toward the north on Saturday and a turn toward the
north-northeast on Sunday.

Maximum sustained winds have increased to near 145 mph (230 km/h)
with higher gusts.  Rosa is a category 4 hurricane on the
Saffir-Simpson Hurricane Wind Scale.  Little significant change in
strength is forecast overnight, with some slow weakening anticipated
by Saturday, and a larger decrease in wind speed expected early next
week.

Hurricane-force winds extend outward up to 40 miles (65 km) from the
center and tropical-storm-force winds extend outward up to 125 miles
(205 km).

The estimated minimum central pressure is 940 mb (27.76 inches).


HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by Rosa will affect portions of the coasts
of southwestern Mexico, the southern Baja California Peninsula, and
southern California late this week and over the weekend.  These
swells are likely to cause life-threatening surf and rip current
conditions.  Please consult products from your local weather office.


NEXT ADVISORY
-------------
Next complete advisory at 200 AM PDT.

$$
Forecaster Blake

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