A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE EASTERN FLORIDA STRAITS OFF THE UPPER KEYS! Seas of 4 to 7 feet, occasionally 9 feet, and W-NW breezes near 20 knots persist tonight into tomorrow. Wind and wave conditions will be hazardous for small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these conditions. Across all other Keys' coastal waters Small Craft Should Exercise Caution, due to winds of 15-20 knots and seas up to 3-5 feet, occasionally 6 feet. Visit weather.gov/key/marine for more detailed marine forecast information.