HURRICANES

Sloppy journalism in the USA. Watching a weather forecast from Florida the presenter (presumably not a meteorologist) stated that the storm surge was caused by the winds blowing the water onshore. This may be a small part of the process but it is the fall in air pressure thatt has most impact. This effect is estimated at a 10 mm (0.39 in) increase in sea level for every millibar (hPa) drop in atmospheric pressure. The average for the Caribbean Sea is just over 1000mb, so Milton coming in at 900mb could see a potential surge of 10m – this is obviously too high and I am out of my scientific knowledge, I guess te surge also depends on how enclosed the area is and also on surrounding air pressure, and the shape of the shoreline and its depth close to the shore? Definitely out of my depth now!

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