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Hurricane Genevieve Advisory Number 10
NWS National Hurricane Center Miami FL EP122020
Issued by the NWS Weather Prediction Center College Park MD
300 PM MDT Tue Aug 18 2020
...TROPICAL STORM WARNING AND WATCH EXTENDED NORTHWARD IN BAJA
SUMMARY OF 300 PM MDT...2100 UTC...INFORMATION
ABOUT 290 MI...465 KM W OF MANZANILLO MEXICO
ABOUT 300 MI...485 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.06 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
The government of Mexico has extended the Tropical Storm Warning
northward along the west coast of the Baja California peninsula
from Todos Santos to Puerto Cortes and has extended the Tropical
Storm Watch northward from Santa Fe to Cabo San Lazaro
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Southern Baja California peninsula from Los Barriles to Puerto
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 Puerto
Cortes to Cabo San Lazaro
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 300 PM MDT (2100 UTC), the center of Hurricane Genevieve was
located near latitude 18.7 North, longitude 108.7 West. Genevieve is
moving toward the northwest near 12 mph (19 km/h). This general
motion is expected to continue with a decrease in forward speed
through 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. Genevieve should hold its intensity or
strengthen a little through Wednesday, but steady weakening is
expected after that.
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
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 intermediate advisory at 600 PM MDT.
Next complete advisory at 900 PM MDT.