Richard's maximum sustained winds Friday are near 40 mph (65 kph). But additional strengthening is forecast for the 17th named storm of the Atlantic season and it could become a hurricane over the weekend.
The National Hurricane Center in Miami says the tropical storm could dump rain on Honduras on Friday and could cause life-threatening flash floods and mud slides. A tropical storm watch has been issued for Honduras from the border with Nicaragua west to Limon.
Richard is located about 235 miles (380 kilometers) south-southeast of Grand Cayman.