A tropical storm-watch is in effect for St. Vincent and the Grenadines, the national meteorological services announced at 6 p.m. Monday.

A tropical storm watch means that tropical storm conditions are likely to affect the nation, in this case, in 24 to 36 hours.

At 5 p.m. the centre of Tropical Storm Don was located near 11.2°N 52.5°W or about 585 miles (970km) to the east- southeast of St. Vincent and the Grenadines.

Tropical Storm Don is moving towards the west at 17mph (27) km/h and this motion is expected to continue in the next 24 hours. Maximum sustained winds are near 40 mph (64 km/h) with higher gust.

Storm force winds extend outward up to 25 miles, (35km) from the centre. The estimated minimum central pressure is 1009 millibars — 29.80 inches.

On its present track, the centre of Tropical Storm Don is expected to pass about 40 miles south of the southern Grenadine islands Tuesday night into early Wednesday. Pockets of moderate to heavy showers, periods of rain and thunderstorms are forecast across St. Vincent and the Grenadines Tuesday night into Wednesday. Rainfall accumulations of 1 to 2 inches (25 to 50 mm) are possible along the path of the system with higher amounts likely in the Grenadines.

In addition, occasional gusty winds to approximately 46mph (74km/h) are likely to spread across St. Vincent and the Grenadines, therefore, deterioration in sea conditions with swells of 2.5 to 3.0 metres (8 to 10 feet) are likely.

Residents are advised to be vigilant and take all necessary precautions during the passage of this storm.

A high surf advisory and small craft warning are in effect for above normal sea swells

This information will be updated at 8 p.m. Monday as the Saint Vincent Meteorological Office continues to monitor this storm.