The two strongest tornadoes recorded in Florida were classified as F4 (winds between 207 and 260 mph) on the Fujita Scale, which has a maximum level of 5. Oddly enough both F4 tornadoes formed from the same thunderstorm on April 4, 1966 and became known as the Tampa Tornado Family. The two tornadoes carved a path of damage across the Florida Peninsula from Pinellas County to Brevard County. Watch this newsreel footage from 1966 of the damage done by these tornadoes.
Source: Weather Versus Climate Change | National Geographic | YouTube
Devastation marks the path of a series of twisters that ravaged Florida from Tampa on the west to Cape Kennedy on the East Coast. Trees stripped of foliage and buildings that were in the path from the big winds make a harrowing picture. Thousands are homeless and the stricken dwellers in desolated areas are pitiful as they examine the remains of their former homes and little is found to be salvaged. The destruction is terrible and complete. It is a quandry with surpassing complications for couples like these. Property damage is in the millions and the stricken region has been declared a disaster area by the federal government. Ironically these symbols of frailty survive the blows 10 died in the Holocaust and hundreds were injured as again rampaging nature displayed its awesome powers.