Status: Ongoing analysis Material from:
1. Impact
In the first days of October, storm Alex impacted large parts of western Europe. On the end of 1 October the cyclone rapidly developed and a sting jet feature formed and hit the coast of Brittany in France. The next day parts of south-eastern France and north-western Italy saw record rainfall and left 3 people dead.
http://floodlist.com/europe/france-italy-floods-storm-alex-october-2020
https://www.bbc.co.uk/news/world-europe-54402096
2. Description of the event
The plots below show analyses of t850 and z500 from 30 September to 4 October, every 24h.
The plots below show analyses of MSLP and 6-hour forecasts of precipitation from 1 October 00UTC to 4 October 00UTC, every 12th hour.
Warnings on Meteoalarm for 2 October from the morning of 1 October.
The images below show satellite images from 1 October 12UTC to 2 October 00UTC, every 3rd hour to illustrate the development of the sting jet over Brittany.
3. Predictability
3.1 Data assimilation
3.2 HRES
3.3 ENS
The plots below show EFI for 24-hour precipitation on 2 October
