Medicane “Trudy” (Detlef, Bernardo) makes landfall in Algeria


A shallow, warm-core cyclone or medicane informally named Trudy, also Detlef and Bernardo, formed in the western Mediterranean on November 11, 2019, and made landfall in Algeria on the same day.

The storm made landfall with maximum sustained winds of 110 km/h (70 mph) and minimum pressure of 992 hPa close to Beni Belaid, Algeria on November 11.

"Detlef weakened soon after it made landfall," Severe Weather Meteorologists noted. As of 15:00 UTC on November 11, mean sea level pressure analysis showed a small cyclone southwest of Sardinia Island, Italy.


Image credit: NASA/NOAA Suomi NPP/VIIRS

The cyclone was a part of the large cyclonic system under a big, deep upper cold-core over the Mediterranean.

Satellite imagery showed a rapidly developing structure with an intense convective band wrapping around an eye. The convective band was wrapping in the core tightly, with highly defined upper-level outflow on the southeast quadrant of the system.

The medicane spawned damaging winds, storm surge, and violent waves.

The system is also responsible for widespread convective storm clusters over south Italy, Malta, and Ionian sea, as well as the cold front moving east-northeast in the afternoon and evening.

Featured image credit: NASA/NOAA Suomi NPP/VIIRS

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