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Hurricane Genevieve Intermediate Advisory Number 8A
NWS National Hurricane Center Miami FL       EP122020
600 AM MDT Tue Aug 18 2020
 
...GENEVIEVE RAPIDLY INTENSIFIES TO A CATEGORY 4 HURRICANE...
...TROPICAL STORM CONDITIONS EXPECTED OVER PORTIONS OF THE SOUTHERN
BAJA CALIFORNIA PENINSULA WHEN GENEVIEVE PASSES TO THE WEST ON
WEDNESDAY...
 
 
SUMMARY OF 600 AM MDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...17.7N 107.6W
ABOUT 235 MI...380 KM WSW OF MANZANILLO MEXICO
ABOUT 390 MI...630 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA
MAXIMUM SUSTAINED WINDS...130 MPH...210 KM/H
PRESENT MOVEMENT...NW OR 310 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.05 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Southern Baja California peninsula from Los Barriles to Todos
Santos
 
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 600 AM MDT (1200 UTC), the eye of Hurricane Genevieve was located 
near latitude 17.7 North, longitude 107.6 West. Genevieve is moving 
toward the northwest near 16 mph (26 km/h), and 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 during the next day or so. The center of the 
hurricane is forecast to move to the southwest of the southern 
portion of the Baja California peninsula on Wednesday night and 
Thursday.
 
Maximum sustained winds have increased to near 130 mph (210 km/h)
with higher gusts.  Genevieve is a category 4 hurricane on the
Saffir-Simpson Hurricane Wind Scale.  Additional rapid strengthening
is possible during the next 12 to 24 hours.  Rapid 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 (28.05 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.
 
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 ADVISORY
-------------
Next complete advisory at 900 AM MDT.
 
$$
Forecaster Zelinsky
 
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