I am travelling to Alicante and Valencia for 2 weeks from 20th September. How is the flood situation in Alicante and Valencia, should that be a matter of concern for tourists and travellers?
No, unless you are heading to Orihuela-Murcia area. If you are going to stay in Alicante city and Valencia city you won't have any problem. The floods have affected mostly to the south of Alicante province (with a lot of problems in roads and highways) but no problem in the Alicante-Valencia highway. Additionally, in two weeks you won't find any trace of the floodings.