Squalls are intense and short-lived thunderstorms that commonly last less than an hour and are relatively weak.

Squalls may turn into powerful supercell thunderstorms and produce tornadoes (called ‘waterspouts’ at sea) and hail, and can last over an hour. Several thunderstorms can combine into a ‘squall line’ that might stretch for hundreds of miles. Squall lines appear over the ocean and on land, and result in significant amounts of rain. Sailors try to avoid squalls and squall lines, but sometimes have no choice but to close (‘batten down’) all hatches, reduce sail area and take the punches that the squalls dish out.

Ending on a positive note, remember that almost every time you sail on the sparkling Caribbean you will not run into a serious squall. And if you do see one, head for shore, dock your boat, and enjoy the fireworks.