Tropical Storm Tammy moving west across tropical Atlantic as group of islands on alert

MIAMI (AP) — Forecasters say Tropical Storm Tammy is moving briskly westward across the Atlantic, after triggering tropical storm watches in several island territories. Tammy formed Wednesday afternoon in the Atlantic Ocean. It has top sustained winds of 40 mph. The National Hurricane Center in Miami said the storm is headed west at 23 mph. Tropical storm watches were issued earlier in the day for Barbados, Dominica, and Martinique and Guadeloupe. Forecasters say Tammy could bring heavy rain to those islands in coming hours and days. It said the British and U.S. Virgin Islands, and Puerto Rico, also could see heavy rains over the weekend from the storm.