* WHAT...North winds 15 to 20 kt with gusts up to 25 kt. * WHERE...Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN...From 6 AM to 2 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.