ZCZC MIATCPAT5 ALL
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Tropical Storm Gamma Intermediate Advisory Number 8A
NWS National Hurricane Center Miami FL AL252020
700 AM CDT Sun Oct 04 2020
...AIR FORCE RECONNAISSANCE AIRCRAFT INVESTIGATING GAMMA OVER THE
EXTREME SOUTHERN GULF OF MEXICO...
SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION
ABOUT 110 MI...175 KM ENE OF PROGRESO MEXICO
ABOUT 35 MI...55 KM N OF RIO LAGARTOS MEXICO
MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H
PRESENT MOVEMENT...N OR 355 DEGREES AT 4 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.39 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 Progreso 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), an Air Force Reserve Hurricane Hunter
aircraft has located the center of Tropical Storm Gamma near
latitude 22.1 North, longitude 88.2 West. Gamma is moving toward the
north near 4 mph (6 km/h), and this general motion with a further
decrease in forward speed is forecast today. Gamma should turn
toward the west or west-southwest tonight or Monday. On the forecast
track, the center of Gamma will meander offshore of the northern
Yucatan Peninsula and over the extreme southern Gulf of Mexico
today, and pass near or just offshore of the northern coast of the
Yucatan Peninsula on Monday and Tuesday.
Maximum sustained winds are near 50 mph (85 km/h) with higher
gusts. Some re-strengthening is expected today, followed by
weakening tonight or Monday, which should continue into Wednesday.
Tropical-storm-force winds extend outward up to 115 miles (185 km),
mainly north and east of the center.
The minimum central pressure estimated from reconnaissance aircraft
data is 995 mb (29.39 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: Gamma is expected to produce an additional 2 to 4 inches
with isolated maximum amounts of 6 inches across portions of
northern Yucatan and far western Cuba through early Tuesday. This
rainfall may prolong or enhance any ongoing flash flooding.
Through the middle of the week, a separate area of significant rain
is possible in the Mexican states of Campeche, Tabasco, northern
Chiapas, and southeast Veracruz, with rainfall of 6 to 8 inches and
isolated maximum amounts of 12 inches. This rainfall may produce
life-threatening flash floods and mudslides. Another area of heavy
rain will impact southern Guatemala towards the Gulf of Fonseca
region between eastern El Salvador, southern Honduras, and northwest
Nicaragua, with accumulations of 4 to 6 inches and isolated maximum
amounts of 8 inches.
WIND: Tropical storm conditions should continue within the Tropical
Storm Warning area on northern coast of the Yucatan through today.
Tropical Storm conditions are possible within the Tropical Storm
Watch area on Monday.
Next complete advisory at 1000 AM CDT.