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Tropical Storm Gamma Intermediate Advisory Number 12A
NWS National Hurricane Center Miami FL AL252020
700 AM CDT Mon Oct 05 2020
...AIR FORCE RESERVE RECONNAISSANCE FINDS GAMMA WEAKER...
...FURTHER WEAKENING EXPECTED...
SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION
ABOUT 165 MI...270 KM ENE OF PROGRESO MEXICO
ABOUT 150 MI...240 KM NNW OF COZUMEL MEXICO
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...SSW OR 205 DEGREES AT 2 MPH...4 KM/H
MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Warning is in effect for...
* North and west of Cancun to Dzilam Mexico
A Tropical Storm Watch is in effect for...
* West of Dzilam to Campeche Mexico
A Tropical Storm Warning means that tropical storm conditions are
occurring somewhere within the warning area.
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
At 700 AM CDT (1200 UTC), the center of Tropical Storm Gamma was
located near latitude 22.6 North, longitude 87.5 West. Gamma is
drifting toward the south-southwest near 2 mph (4 km/h). Gamma is
forecast to gradually turn toward the southwest later today, and
continue to move slowly in that direction through mid-week. On the
forecast track, the center of Gamma will continue to meander
offshore of the northern Yucatan Peninsula and pass near or just
offshore of the northern coast of the Yucatan Peninsula this
evening and on Tuesday. Gamma could possibly move inland along the
northwest coast of the Yucatan Peninsula Tuesday night and
Data from the reconnaissance aircraft indicate that maximum
sustained winds have decreased to near 45 mph (75 km/h) with higher
gusts. Gradual weakening is forecast during the next few days.
Tropical-storm-force winds extend outward up to 160 miles (260 km),
mainly northwest through northeast of the center.
The estimated minimum central pressure based on measurements from
the hurricane hunter plane is 1001 mb (29.56 inches).
HAZARDS AFFECTING LAND
Key messages for Tropical Storm Gamma can be found in the Tropical
Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45
KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT5.shtml.
RAINFALL: Through midweek, Gamma is expected to produce an
additional 3 to 6 inches of rainfall with isolated maximum amounts
of 8 inches across portions of the Mexican states of Yucatan,
Campeche, and Tabasco. This rainfall may produce significant flash
WIND: Tropical storm conditions are likely in portions of the
Tropical Storm Warning area along the northern coast of the Yucatan
Peninsula later today. Tropical Storm conditions are possible
within the Tropical Storm Watch area tonight and on Tuesday.
Next complete advisory at 1000 AM CDT.