Status: Ongoing analysis Material from: Linus


 


1. Impact

On 24-26 October the central Mediterranean was hit by extreme rainfall. For example, Sicily and Calabria in Italy was affected with stations reporting more than 400 mm in 72h.

Report about the event (in Italtian):

http://www.arpacal.it/allegati/meteopluviometrico_ottobre%202021.pdf

Floodlist item:

https://floodlist.com/africa/algeria-tunisia-italy-medicane-floods-october-2021

2. Description of the event

The plots below show analyses of z500 (contour) and T850 (shade) from 21 October 00UTC to 25 October 00UTC, every 24 hour.


The plots below show analyses of MSLP and 6-hour precipitation forecasts from 23 October 00UTC to 27 October 00UTC every 12h.


3. Predictability

  

3.1 Data assimilation

 

3.2 HRES

The plots below show observations from SYNOP (first plot) and HRES forecasts of 72-hour precipitation valid 24 October 00UTC - 27 October 00UTC, from different initial dates. The black box marks southern Calabria.



3.3 ENS

The plots below show EFI for 1-day precipitation 14 October, from different initial times. 



3.4 Monthly forecasts


3.5 Comparison with other centres


4. Experience from general performance/other cases


5. Good and bad aspects of the forecasts for the event


6. Additional material
























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