Heavy freezing spray watch
A Heavy Freezing Spray Watch is issued by the National Weather Service of the United States when there is an increased risk of a heavy spray event that meets the necessary criteria, but the occurrence, timing, and/or location are still uncertain. A watch will be issued when forecasters expect freezing water droplets to be able to accumulate on sea vessels at rates of 2 cm per hour or greater. This accumulation must be caused by an "appropriate combination of cold water, wind, cold air temperature, and vessel movement." External links. Example: GALE WARNING REMAINS IN EFFECT  FROM 1 AM SATURDAY TO 7 AM EST SUNDAY... ...HEAVY FREEZING SPRAY WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY EVENING... The National Weather Service in Northern Indiana has issued a Heavy Freezing Spray Watch, which is in effect from Saturday afternoon through Sunday evening. Saturday. Winds veer west to 30 knots by midday Saturday with Saturday and persist into Sunday morning. superstructures which could result in a loss of vessel PRECAUTIONARY/PREPAREDNESS ACTIONS... A Gale Warning means winds of 34 to 47 knots are imminent or occurring. Operating a vessel in gale conditions requires experience and properly equipped vessels . It is highly recommended that mariners without the proper experience seek safe harbor prior to the onset of gale conditions. A Heavy Freezing Spray Watch is issued when the risk of heavy freezing spray has significantly increased...but the specific timing and/or location is still uncertain. It is intended to provide additional lead time for mariners who may wish to consider altering their plans.