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Tropical Storm Gonzalo Advisory Number 13
NWS National Hurricane Center Miami FL AL072020
500 PM AST Fri Jul 24 2020
...GONZALO FORECAST TO BRING GUSTY WINDS AND HEAVY RAIN TO PORTIONS
OF THE SOUTHERN WINDWARD ISLANDS...
SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
ABOUT 390 MI...625 KM E OF THE SOUTHERN WINDWARD ISLANDS
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY...
The government of Trinidad and Tobago has issued a Tropical Storm
Warning for Tobago and Grenada.
The government of St. Lucia has canceled the Tropical Storm
Warning for St. Lucia.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A Tropical Storm Warning is in effect for...
* St. Vincent and the Grenadines
* Grenada and its dependencies
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case
within about 24 hours.
Interests elsewhere in the Windward Islands should monitor the
progress of this system.
For storm information specific to your area, please monitor
products issued by your national meteorological service.
DISCUSSION AND OUTLOOK
At 500 PM AST (2100 UTC), the center of Tropical Storm Gonzalo was
located near latitude 10.0 North, longitude 55.6 West. Gonzalo is
moving toward the west near 18 mph (30 km/h). A general westward to
west-northwestward motion is expected for the next couple of days.
On the forecast track, Gonzalo will move across the southern
Windward Islands Saturday afternoon or evening and over the eastern
Caribbean Sea on Sunday.
Data from an Air Force Reserve Hurricane Hunter aircraft
indicate that Gonzalo's maximum sustained winds have decreased
to near 40 mph (65 km/h) with higher gusts. Some slight
strengthening is possible before Gonzalo reaches the southern
Windward Islands. Weakening is expected after Gonzalo moves over
the eastern Caribbean Sea and the system is forecast to dissipate
early next week.
Data from the Hurricane Hunter plane indicate that
tropical-storm-force winds extend outward up to 25 miles (35 km)
from the center.
The estimated minimum central pressure is 1008 mb (29.77 inches).
HAZARDS AFFECTING LAND
Key messages for Gonzalo can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC,
and on the web a www.hurricanes.gov/text/MIATCDAT2.shtml.
WIND: Tropical storm conditions are expected within portions of
the Tropical Storm Warning area beginning on Saturday.
RAINFALL: Gonzalo is expected to produce total rain accumulations
of 2 to 5 inches, with isolated maximum amounts of 8 inches in
Barbados and the Windward Islands through Sunday night. Gonzalo is
also expected to produce total rain accumulations of 2 to 4 inches
in Trinidad and Tobago as well as 1 to 2 inches over northeastern
Venezuela. Rainfall in Barbados and the Windward Islands could lead
to life-threatening flash floods.
Next intermediate advisory at 800 PM AST.
Next complete advisory at 1100 PM AST.