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Hurricane Genevieve Intermediate Advisory Number 9A
NWS National Hurricane Center Miami FL EP122020
1200 PM MDT Tue Aug 18 2020
...EYE OF GENEVIEVE HEADING NORTHWESTWARD...
...TROPICAL STORM CONDITIONS EXPECTED OVER PORTIONS OF THE SOUTHERN
BAJA CALIFORNIA PENINSULA WHEN THE CENTER OF GENEVIEVE PASSES TO
THE WEST ON WEDNESDAY...
SUMMARY OF 1200 PM MDT...1800 UTC...INFORMATION
ABOUT 270 MI...435 KM WSW OF MANZANILLO MEXICO
ABOUT 325 MI...525 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 14 MPH...23 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.06 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Southern Baja California peninsula from Los Barriles to Todos
A Tropical Storm Watch is in effect for...
* The east coast of the Baja California peninsula from Los Barriles
to La Paz
* The west coast of the Baja California peninsula from Todos Santos
to Santa Fe
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
At 1200 PM MDT (1800 UTC), the clear eye of Hurricane Genevieve was
located near latitude 18.4 North, longitude 108.4 West. Genevieve is
moving toward the northwest near 14 mph (23 km/h). This general
motion is expected to continue with a decrease in forward speed
through early Thursday. On the forecast track, the center of
Genevieve is expected to move parallel to but well offshore the
coast of southwestern Mexico today. The center of the hurricane is
then forecast to move to the southwest of the southern portion of
the Baja California peninsula on Wednesday night and Thursday.
Maximum sustained winds are near 130 mph (215 km/h) with higher
gusts. Genevieve is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Additional strengthening is possible today and
tonight. Weakening is forecast to begin by late Wednesday and should
continue through the end of the week.
Hurricane-force winds extend outward up to 30 miles (45 km) from
the center and tropical-storm-force winds extend outward up to 150
miles (240 km).
The estimated minimum central pressure is 950 mb (28.06 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected within the warning
area in the southern Baja California peninsula by Wednesday
afternoon, especially over higher terrain. Tropical storm
conditions are possible within the watch area by Wednesday night or
Thursday morning, especially over higher terrain.
RAINFALL: Genevieve is expected to produce rainfall amounts of 1 to
4 inches across portions of far southern Baja California Sur and
portions of the southwest coast of Mexico.
SURF: Large swells produced by Genevieve are affecting portions of
the southern coast of Mexico and will spread northward along the
southwestern and west-central coast of Mexico to the Baja California
peninsula through Wednesday. These swells are likely to cause
life-threatening surf and rip current conditions. Please consult
products from your local weather office.
Next complete advisory at 300 PM MDT.