Due to hazardous seas and strong winds, a small craft advisory has been issued for the Virgin Islands, effective today, Saturday, March 21, 2020. Photo: VINO/File

A small craft warning means that wind speeds, in this case, winds east-northeast at 26 to 41 km/h (14 to 22 knots; 16 to 25 mph), with strong gusts to around 63 km/h (34 knots; 39 mph) of 41 km/h or higher (22 knots or higher) are expected to produce hazardous wave conditions to small crafts.

According to a release from the met office, "Hazardous seas, due to fresh to occasionally strong winds resulting from a tight pressure gradient, are expected to be an extreme threat to the life and property of mariners. ." 

It said seas significant wave heights of 2 to 3 metres (6 to 10 feet), occasionally or locally reaching near 4 metres (13 feet) is expected.

Loss of life possible 

Possible impacts of the warning if not adhered to include, "loss of life; injuries; sea search and rescue disruptions; disruptions to sea transportation; scarcity of seafood; damage or loss of boats and fishing equipment; disruptions to marine recreation and businesses and economic losses."

Dominant wind wave period is 7 to 9 seconds and open waters mainly on the Atlantic or eastern side of the territory is expected to be affected.