Subtropical Storm Teresa: The Day-Long 19th Named Storm of the Season

Satellite image of Subtropical Storm Teresa, which formed late Friday and became a remnant low by late Saturday.

As quickly as Subtropical Storm Teresa formed, it dissipated no more than 24 hours after it was named. Teresa formed from a non-tropical area of low pressure the National Hurricane Center was monitoring, north of Bermuda.

Teresa was not expected to be long-lived as a developing extratropical system to the north was forecast to absorb Teresa by late Saturday into Sunday.

According to the National Hurricane Center, Teresa was the 9th so-called “shortie” of the 2021 hurricane season – systems that are short-lived and relatively weak. The 2021 Atlantic Hurricane Season has now tied 2007 for the most “shorties” in a single Atlantic season on record.

Still, with this storm’s formation, 2021 has now tied 2020 for the most Atlantic named storms to form between 11 August – 24 September on record, according to meteorologist Philip Klotzbach.

“There’s been a proliferation of these ‘shorties’ in the last several years, which is primarily due to technological improvements, not man-made or natural climate variability,” Dennis Feltgen, a meteorologist and spokesman for the National Hurricane Center, said in an email to the New York Times.

After Teresa, there are only two names, Victor and Wanda, left on the planned list of 21 storm names. If more storms form, the National Weather Service will move on to a list of supplemental names, only the third time in history — but the second in two straight years — that it has had to do that. The hurricane season officially ends on Nov. 30.

Tropical Cyclone Climatology

2021 has already produced 19 tropical cyclones in the Atlantic Basin, with the following system being named Victor for the 2021 Atlantic Hurricane Season.

As we head through the second half of September and into October, we’ll continue to monitor the entire Atlantic closely as tropical cyclones could form from tropical waves, non-tropical low-pressure systems in the North Atlantic, and from the Central America Gyre in the Western Caribbean Sea or the southwestern Gulf of Mexico.

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