According to the assessment published by the General Directorate of Meteorology on October 25, the rainy system will begin at 05:00 on Monday, October 26, and continue until 03:00 on Tuesday, October 27. Orange alerts were issued for Aydın and Muğla, while yellow alerts were issued for İzmir, Denizli and Antalya.
Starting in the morning, heavy showers producing 21 to 50 kilograms of rain per square meter are expected in İzmir's southern and western districts and around Aydın. Rainfall is forecast to reach 51 to 100 kilograms per square meter in western Aydın and across Muğla, rising to very heavy and torrential levels.

From midday onward, heavy showers will affect Denizli and heavy to very heavy thunderstorms producing 30 to 75 kilograms of rain per square meter are expected in Antalya's western districts. Elmalı, Finike, Kaş, Korkuteli, Kumluca, Demre and Kemer in Antalya are expected to be affected. Rainfall around Muğla and Antalya is forecast to continue intermittently on Tuesday and Wednesday.
The General Directorate of Meteorology urged caution against flash floods, flooding, landslides, lightning, localized hail, strong winds during rainfall, waterspouts along the coast and disruptions to transportation.
On Tuesday, October 27, heavy rainfall is expected around Çanakkale, Tekirdağ, İstanbul and Bursa, as well as in southern İzmir, Antalya, Muğla, eastern Adana, Osmaniye and Hatay.