November 2020 Hurricane Summary

9 12 2020

Dale C. S. Destin|

The hurricane season saved the worst for last. November, the last month of the official season, produced the strongest Atlantic hurricane for the year – Category 5 Hurricane Iota, with peak winds of 260 km/h (160 mph).

Category 5 Hurricane Iota making landfall on Nicaragua – 17 Nov 2020

Iota devastated Central America, particularly Honduras and Nicaragua, killing 61 and causing at least US$564 million in damage. However, long before Iota was Iota, her precursor – Tropical Disturbance AL98, was quite destructive to Antigua. It dumped over 373 mm (over 14 in) of rain in 24-hours across parts of mainly western Antigua. This Lenny-type-rainfall caused massive flooding, resulting in inevitable damage in the hundreds of millions of dollars.

Iota not only became the only Category 5 hurricane for the season, but also the first Category 5 hurricane to have its origin in November. The 1932 Cuba hurricane, also known as the Hurricane of Santa Cruz del Sur or the 1932 Camagüey hurricane, became a Category 5 hurricane in November but has its origin in October, unlike Iota.

Iota’s late rise to Category 5 status also keeps the undesirable record streak of seasons going, with at least one such maximum category hurricane. The streak is at five seasons, dating back to 2016.

Tropical Storm Theta was the other named tropical cyclone to have its origin in November. It had peak winds of 110 km/h (70 mph) and minimal impact to the Canary Islands and Madeira.

Eta had its origin in October but developed into a Category 4 hurricane in November and impacted Nicaragua, less than two weeks ahead of Iota. This November tied with November 2005, 2001, 1961 and 1931 for the most storms named in the month.

With the formation of Iota, we were nine deep into the Greek Alphabet – the back up list for naming storms. Notwithstanding, Antigua and Barbuda and the rest of the Eastern Caribbean remained hurricane-free right through the season and was happy to see the back of November.

The hurricane season officially ended November 30, with a record 30 named storms, 13 hurricanes and 6 major hurricanes. Only 2005 is close with 28 named storms, a record that most never thought would ever be broken.  

Recall that an average season produces 12 named storms, 6 hurricanes and 3 major hurricanes, Thus, this season produced 250 percent of the average number of named storms, 217 percent of the average number of hurricane and 200 percent of the average number of major hurricanes.

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