Skip Navigation Links
NOAA NOAA United States Department of Commerce

Hurricane WILLA


ZCZC MIATCPEP4 ALL
TTAA00 KNHC DDHHMM

BULLETIN
Hurricane Willa Advisory Number  11
NWS National Hurricane Center Miami FL       EP242018
300 PM MDT Mon Oct 22 2018

...EYE OF EXTREMELY DANGEROUS HURRICANE WILLA CONTINUES NORTHWARD...
...EXPECTED TO PRODUCE LIFE-THREATENING STORM SURGE, WIND, AND
RAINFALL OVER PORTIONS OF WEST-CENTRAL AND SOUTHWESTERN MEXICO...


SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...19.7N 107.2W
ABOUT 135 MI...215 KM SSW OF LAS ISLAS MARIAS MEXICO
ABOUT 110 MI...175 KM WSW OF CABO CORRIENTES MEXICO
MAXIMUM SUSTAINED WINDS...155 MPH...250 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...929 MB...27.44 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...
* San Blas to Mazatlan, including Las Islas Marias

A Tropical Storm Warning is in effect for...
* Playa Perula to San Blas
* North of Mazatlan to Bahia Tempehuaya

A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area within the next 36 hours.
Preparations to protect life and property should be rushed to
completion.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.

Interests elsewhere along the coasts of west-central and
southwestern mainland Mexico should monitor the progress of Willa.

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 300 PM MDT (2100 UTC), the center of Hurricane Willa was located
near latitude 19.7 North, longitude 107.2 West.  Willa is moving
toward the north near 8 mph (13 km/h), and this general motion
should continue tonight.  Willa is forecast to accelerate toward the
north-northeast and move over or very near the Islas Marias early
Tuesday and make landfall along the west-central coast of mainland
Mexico in the hurricane warning area Tuesday afternoon or evening.

Maximum sustained winds are near 155 mph (250 km/h) with higher
gusts.  Willa is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale.  Gradual weakening is forecast during the
next day or so, but Willa is expected to be a dangerous major
hurricane when it reaches the coast of Mexico.  Rapid weakening is
expected after landfall Tuesday night and Wednesday.

Hurricane-force winds extend outward up to 35 miles (55 km) from the
center and tropical-storm-force winds extend outward up to 125 miles
(205 km).

The estimated minimum central pressure is 929 mb (27.44 inches).


HAZARDS AFFECTING LAND
----------------------
STORM SURGE:  An extremely dangerous storm surge is likely along
portions of the coast of southwestern Mexico, especially near
and to the south of where the center of Willa makes landfall.
Near the coast, the surge will be accompanied by large and
destructive waves.

RAINFALL:  Willa is expected to produce storm total rainfall
accumulations of 6 to 12 inches, with local amounts to 18 inches,
across portions of western Jalisco, western Nayarit, and southern
Sinaloa in Mexico.  This rainfall will cause life-threatening flash
flooding and landslides.

Farther inland, Willa is expected to produce rainfall amount of 2 to
4 inches across portions of Zacateca, Durango, southeast Chihuahua,
and Coahuila in Mexico, with local amounts to 6 inches possible.
This rainfall could cause life-threatening flash flooding.

WIND:  Hurricane conditions are expected within the hurricane
warning area beginning Tuesday afternoon, with tropical storm
conditions expected by early Tuesday.  Tropical storm conditions
are expected within the tropical storm warning areas by tonight
and Tuesday.

SURF:  Large swells generated by Willa will continue to affect
portions of the coast of southwestern and west-central Mexico
during the next few days.  Swells should begin to affect portions
of the coast of the southern Baja California peninsula later today.
These swells are likely to cause life-threatening surf and rip
current conditions. Please consult products from your local weather
office.


NEXT ADVISORY
-------------
Next intermediate advisory at 600 PM MDT.
Next complete advisory at 900 PM MDT.

$$
Forecaster Brown

NNNN