Genoa Low and severe convective storm over the Mediterranean Sea

Severe convective storm over the Mediterranean Sea

04 October 2005 11:00 UTC

Genoa Low and severe convective storm over the Mediterranean Sea
Genoa Low and severe convective storm over the Mediterranean Sea

Genoa Low and severe convective storm over the Mediterranean Sea.

Last Updated

19 March 2021

Published on

04 October 2005

by Livia Briese and Jochen Kerkmann (EUMETSAT)

The Meteosat-8 images and animations below provide an interesting insight into the development of severe weather experienced in Italy and over the Mediterranian Sea. They show the development of a big 'Genoa Low', a cyclone that brought heavy rain and subsequent floods to Italy, including 'acqua alta' in Venice, during 2–4 October 2005.

They also show the formation of a large convective system over the Mediterranean Sea, to the south-east of Sicily. This impressive, long-living storm developed underneath the jet streak (see airmass RGB composite) following a low-level convergence line, which is clearly visible in the HRV image.

At 11:00 UTC, it is fully developed and well organised with a clear separation of the inflow/updraft area from the downdraft area and a marked U or V shape. Later on, during the afternoon, it moved away from the jet streak and probably reached the end of the convergence line which led to the rapid decay of the storm.

Met-8, 04 October 2005, 11:00 UTC
Met-8 Channel 05 (WV6.2), 04 October 2005, 11:00 UTC
Full Resolution
Animation (1 Oct 15:00 UTC–4 Oct 15:00 UTC)
 
Met-8, 04 October 2005, 11:00 UTC
Met-8 Channel 09 (IR10.8, colour enhanced), 04 October 2005, 11:00 UTC
Full Resolution
Animation (3 Oct 12:00 UTC–4 Oct 15:00 UTC)
Met-8, 04 October 2005, 11:00 UTC
Met-8 RGB Composite NIR1.6, VIS0.8, VIS0.6, 04 October 2005, 11:00 UTC
Full Resolution
 
Met-8, 04 October 2005, 11:00 UTC
Met-8 RGB Composite VIS0.8, IR3.9r, IR10.8, 04 October 2005, 11:00 UTC
Full Resolution
Met-8, 04 October 2005, 11:00 UTC
Met-8 RGB Composite (Airmass), 04 October 2005, 11:00 UTC
Full Resolution
Position of jet streak at 08:00 UTC
 
Met-8, 04 October 2005, 11:00 UTC
Met-8 RGB Composite WV6.2–WV7.3, IR3.9–IR10.8, NIR1.6–VIS0.6, 04 October 2005, 11:00 UTC
Full Resolution
Met-8, 04 October 2005, 11:00 UTC
Met-8 Channel 12 (HRV), 04 October 2005, 11:00 UTC
Full Resolution
 
Met-8, 04 October 2005, 11:00 UTC
Met-8 RGB Composite HRV, HRV, IR10.8, 04 October 2005, 11:00 UTC
Full Resolution

Related content

Animation of Met-6 visible images (rapid scans, 06:00-15:00 UTC, AVI)
Channel 12 (HRV) image from 08:30 UTC
Channel 09 (IR10.8) black/white image from 11:00 UTC
RGB composite IR12.0-IR10.8, IR10.8-IR8.7, IR10.8 (Dust) from 11:00 UTC