July Stand By 2020 Hurricane Summary

1 08 2020

Dale C. S. Destin|

July stand by turned out to be a historic month. This July tied with July 2005 for the greatest number of Atlantic named storms – five, for the month, on record dating back to 1851. It was also the first time since 1996 Antigua and Barbuda experienced sustained storm-force winds.

Tropical cyclone tracks through July 30 courtesy the Weather Channel

The month produced five named storms: Edouard, Fay, Gonzalo, Hanna and Isaias. Hanna and Isaias went on to become Category 1 hurricanes. This is over 450% the usual number of storms for July or 4.5 times the average. Further, the two hurricanes represent 400% the average amount.

We are just one-third the way through the 2020 hurricane season; however, we have seen more storms than what was observed in 80 full seasons. Further, the nine named storms, for the year thus far, are more than or equal to the total storms for 92 individual seasons – more than half of all previous 169 seasons, on record. An average season produces 12 named storms, 6 hurricanes and 3 major hurricanes.

Nine storms down, 8 to 19 more are forecast; the list is likely to be exhausted.

All the storms in July were the earliest in their positions, on record. Thus, Edouard, Fay, Gonzalo, Hanna and Isaias were the earliest 5th, 6th, 7th, 8th and 9th named storms, on record, respectively. In other words, there has never been this many storms, this early, in the hurricane season. On average, the season through July 31, produces ONLY two named storms, a hurricane every other year and a major hurricane every 5 years.

The 2020 season, thus far, has nearly 5 times the average number of storm, nearly four times the average number of hurricanes and over twice the average amount of ACE.

Gonzalo – 21 to 25 July, is one of two storms that impacted the Caribbean. The other storm was Isaias, which formed July 30, went on to become a hurricane and continues at present across the Bahamas and threatening the East Coast of the United States. Gonzalo caused minimal impacts to the southern Caribbean. Meanwhile the impacts from Isaias are ongoing and are expected to be extensive.

Isaias caused sustained storm-force winds across Antigua and Barbuda while it was still Potential Tropical Cyclone (PTC) Nine. In Antigua, peak winds of 69 km/h (43 mph) were recorded at the V.C. Bird international Airport, on July 29, at 07:09 UTC (3:09 am local time). Peak gusts of 82 km/h (51 mph) was recorded at the Sir Vivian Richards Stadium.

Over in Barbuda, PTC caused peak winds 63 km/h (39 mph), which were observed at the Hannah Thomas Hospital, July 29, at 09:54 UTC (5:54 am local time). It also produced peak gusts of 74 km/h (46 mph). The last time Antigua and Barbuda had sustained storm-force winds was 24 years ago from Hurricane Bertha.

PTC Nine also produced 25 to 75 mm (1 to 3 in) of rain, in 36 hours, resulting in minor flooding.

Potential Tropical Cyclone Nine moving across the Caribbean Jul 29, 2020. Antigua and Barbuda circled in yellow

Fay – 9 to 11 July, was the most deadly and destructive of the July storms. It killed six persons and caused US$400 million in damage across Southeastern and Northeastern United States and Eastern Canada.

Hanna – 23 to 27 July, was the second most deadly and destructive. It killed 5 persons and caused over US$395 million in damage. It impacted Hispaniola, Cuba, the Gulf Coast of the United States and Mexico.

Edouard – 4 to 6 July, was the weakest and least impacting of the storms. It affected Bermuda and the British Isles.

While writing this blog, Tropical Depression Ten formed near the coast of Africa. It is forecast to become a storm but not expected to impact any landmass.

Recall that July averages one named storm per year, a hurricane every other year and a major hurricane every 6 to 7 years. Compared to the numbers above for this year, this July was momentous, almost unprecedented.  

Please continue to follow me for more on the hurricane season and all things weather and climate via TwitterFacebook and Instagram. Also, share this blog, if you found it useful.


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