Thursday, September 7, 2017

A Record-Setting Hurricane

Hurricane Irma, churning its way toward Florida, has pulverized a few Caribbean islands along the way.  Since it formed, in the tropical Atlantic, this storm has maintained a symmetrical structure and has not encountered obstacles to its development (wind shear, dry air, cold water or mountain ranges).  As a result, the massive hurricane achieved category 5 status and has retained that strength for more than twice as long as any Atlantic hurricane in recorded history.

Expected to pummel the Turks and Caicos today, the storm's center remained north of Puerto Rico and the Dominican Republic and will likely miss Cuba as Irma continues to track to the WNW.  The Bahamas will soon feel its leading edge and a hurricane warning has now been posted for Southeast Florida and the Florida Keys.

An atmospheric trough to the north, combined with a large dome of high pressure over the mid Atlantic, will eventually steer Irma northward.  When and where it makes that turn will make all the difference to residents of Florida, southern Georgia and the Carolinas.  We should know within 48 hours.