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Tropical Storm Marco Advisory Number 9
NWS National Hurricane Center Miami FL AL142020
1000 AM CDT Sat Aug 22 2020
...MARCO STRENGTHENING QUICKLY...
...FORECAST TO BECOME A HURRICANE LATER TODAY...
SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION
ABOUT 105 MI...170 KM ENE OF COZUMEL MEXICO
ABOUT 75 MI...120 KM SSW OF THE WESTERN TIP OF CUBA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NNW OR 340 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...992 MB...29.30 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
The government of Cuba has issued a Tropical Storm Warning for the
province of Pinar del Rio.
The government of Mexico has discontinued the Hurricane Watch and
Tropical Storm Warning for the eastern Yucatan coast south of
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* Province of Pinar del Rio Cuba
* Cancun to Dzilam Mexico
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
the next 12-24 hours.
Interests along the coasts of Louisiana and Texas should monitor
the progress of Marco. Watches will likely be required for a
portion of this area later today.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
At 1000 AM CDT (1500 UTC), the center of Tropical Storm Marco was
located by an Air Force Reserve Hurricane Hunter aircraft near
latitude 20.9 North, longitude 85.3 West. Marco is moving toward
the north-northwest near 12 mph (19 km/h), and this general motion
is expected to continue through Sunday morning. A gradual turn
toward the northwest and west-northwest is expected to begin Sunday
afternoon and continue through Tuesday morning. On the forecast
track, Marco's center will move through the Yucatan Channel into
the southeastern Gulf of Mexico by this evening. Marco will then
move across the central Gulf of Mexico on Sunday and approach the
central and northwestern Gulf coast on Monday and Tuesday.
Data from the Hurricane Hunter aircraft indicate that maximum
sustained winds have increased to near 65 mph (100 km/h) with
higher gusts. Additional strengthening is forecast during the next
day or two, and Marco is expected to become a hurricane later
today. Weakening is forecast to occur on Monday and Tuesday.
Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.
The estimated minimum central pressure is 992 mb (29.30 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected within the warning
area in Cuba today. Tropical storm conditions are also still
possible today within the warning area along the northeastern coast
of the Yucatan Peninsula of Mexico.
RAINFALL: Marco is expected to produce 1 to 4 inches of rain, with
isolated maximum amounts of 6 inches possible, across the eastern
portions of the Mexican states of Quintana Roo and Yucatan, and
across far western Cuba. This rainfall may result in areas of flash
Next intermediate advisory at 100 PM CDT.
Next complete advisory at 400 PM CDT.