What is the Trend in Hurricanes?

Interesting analysis from the CO2 Coalition

Hurricane Ian and Trends

Joe D’Aleo is a supporter and friend of the CO2 Coalition. He co-founded the Weather Channel with John Coleman in 1982. Here he provides some fascinating and useful information about hurricanes and Hurricane Ian specifically.

Ian made landfall as a strong CAT4 storm. The damage will rank among the largest storms. Its life is not over, as it will landfall again in South Carolina with rain; the biggest story to come.

See the trends per decade of landfalling Florida hurricanes and major hurricanes since 1850:

Here is a listing of the Major Hurricane landfalls in Florida:

Dr. Neil Frank, longest serving Hurricane Center Director advises:

“Without question the most reliable indicator of a trend in hurricane activity in the Atlantic is to focus on land falling major hurricanes (3-5) in the mainline U.S. I doubt if a major hurricane could have hit the U.S. in the 1800s without being noticed, while a minor hurricane in a remote area could have been undetected so it is important to concentrate on major hurricanes. It is important to emphasize that the rainfall in a tropical system is not related to the intensity but depends on the forward speed of motion. In the case of Harvey, the weakening hurricane stalled over southeast Texas for three days. Finally, as you know the most active hurricane season in the U.S. was 1886 when 7 hurricanes hit the Gulf coast. One of the major hurricanes in Texas destroyed Indianola on the south shore of Matagorda Bay. At one time there were around 20,000 people in the city before a prior major hurricane in 1875 did major damage. The only thing in Indianola today is a cemetery with numerous headstones with dates 1875 or 1886.”

The US trend, like Florida, is down.

Ian encountered a ‘cool’ upper trough and large, chilly surface highs to the north, which deflected it northeast through Florida before feeding off the Gulf Stream to become a hurricane again and resuming its journey poleward.

See Ian’s track for landfall #2:

We have added a landfall to South Carolina chart as probably a CAT 1; the trend here is down also. The 1890s was the big decade. The most recent landfalling major was Hugo, a CAT4 in 1989.

See the heavy rains coming inland again the next several days:

See the latest Sea Surface Temperature anomaly chart. The La Nina cold water shows in the Pacific and warm pools in the northwest Pacific and northwest Atlantic:

These are due to a lack of early to mid-season hurricanes in these areas (until one developed and tracked to the Bering Sea and Alaska). Hurricanes usually track these areas in the late summer and fall. The tropics heat up with the intense high in the sky sun in the summer. Currents carry some of that heat north, but this is slow and nature created hurricanes to speed the process. If these warm pools persist, they can affect the winter patterns. More on that to follow.

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CO2 Coalition

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Gregory Wrightstone

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