2022 National Hurricane Convention

From December 16-18, 2022, the first annual National Hurricane Convention occurred in Miami, Florida. In this convention of over 40 climate scientists, the antihurricane was officially recognized, the Atlantic season dates were changed, the Saffir-Simpson hurricane scale was altered, and there was a slight change in Atlantic naming procedures to avoid having to enter the Greek Alphabet in future years.

Official Recognition of Antihurricanes
After the formation of Tropical Storm Colin - which would eventually be renamed Antihurricane Colin - in 2022, it was announced that beginning in the 2023 Atlantic Hurricane Seasons, antihurricanes would be named as normal. The Nekaro-Cardozo Antihurricane Scale would be used for determining Antihurricane intensity, classified into "negative categories" based on increasing barometric pressure. However, it would not be for 5 years before another named antihurricane would occur, which was in 2027.

Storm Advisories
It was also determined in this meeting that Atlantic storm advisories will always be conducted every 3 hours, even for tropical invests and storms weaker than hurricane strength.

Season Dates Change
At this meeting, it was determined that the Atlantic season will now begin on May 15 instead of June 1. This was done to match with the Pacific Hurricane Season and due to the fact that pre-season storms had occurred frequently in the past 20 years. The season would still end on November 30 as normal.

Atlantic Naming Changes
In order to avoid having to enter the Greek Alphabet, names for the letters X, Y, and Z were added to match with the Pacific. There would only be two sets of X, Y, and Z names, though.

Used in lists in even-numbered years

Xenia

Yasmani

Zoe

Used in lists in odd-numbered years

Xander

Yvonne

Zachary

Saffir-Simpson Hurricane Scale Revision
The Saffir-Simpson Hurricane Scale was revised in 2022 to include a Category 6, which would be for storms with winds of greater than 180 miles per hour. 2005's Hurricane Wilma, for example, was later re-classified as Category 6 hurricanes under the new schedule. In addition, the minimum wind speed for a Category 1 hurricane was raised from 74 to 75 miles per hour, and the minimum wind speed for a Tropical Storm was raised from 39 to 40 miles per hour.

Retired Names
It was also determined that after 100 years had passed since the storm occurred, retired names could be re-used, if necessary, provided that the storm caused less than $40 billion in damage and fewer than 1,000 deaths. However, the NHC stated that they would try to avoid this as much as possible, and would only do this when no other names were available.

Impact
Hurricanes named before the 2023 season were not affected by the naming procedures. All hurricanes with winds of greater than 180 miles per hour were re-designated Category 6 hurricanes instead of Category 5 hurricanes. Hurricane Wilma is the most notable example of this.