Gonzalo rainfall could lead to life-threatening flash floods

By Demion McTair. Updated 5:22 p.m., Friday, July 24, 2020, Atlantic Standard Time (GMT-4).

Miami, Florida (ONE NEWS SVG) – Tropical storm Gonzalo is forecasted to bring gusty winds and heavy rainfall to portions of the southern windward islands, a 5:00 p.m., advisory from the Miami based National Hurricane Center (NHC) says.

In advisory number 13, the NHC says that the rainfall from the storm could lead to life-threatening flash floods.

“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,” the NHC advisory says.

“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,” the NHC advisory says.

Where is Gonzalo?

As of 5:00 p.m., tropical storm Gonzalo was located at 10.0N 55.6W,
about 390 miles east of the southern windward islands.

The storm’s maximum sustained winds are at 40 miles per hour and it’s present movement is west at 18 miles per hour.

Gonzalo’s minimum central pressure is 1008 millibars at 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…

  • Barbados
  • St. Vincent and the Grenadines
  • Tobago
  • 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

WIND: Tropical storm conditions are expected within portions of
the Tropical Storm Warning area beginning on Saturday.

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