Oct 31, 2019

Two Arabian Sea Tropical Cyclones at Once, Kyarr and Maha, a First in Historical Records

Arabian Sea
by
Jonathan Erdman
,
The Weather Channel
The pair of tropical cyclones in the Arabian Sea on Oct. 31, 2019.
The pair of tropical cyclones in the Arabian Sea on Oct. 31, 2019.

For the first time on record, two tropical cyclones are spinning at once in the Arabian Sea, one of which earlier became the strongest in that basin in 12 years.

...

Only one or two tropical cyclones form each year in the Arabian Sea, on average, according to IMD records since 1891.

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There were two large-scale factors in play.

First, ocean temperatures over the Arabian Sea were warmer than average, generally from 0.5 to 1.5 degrees Celsius, according to a NOAA analysis.

That might not sound significant, but this additional ocean heat content provides more fuel for tropical cyclones.