The State Meteorological Service expects heavy downpours across Marmara starting Tuesday morning, September 22. The Istanbul Governorship called for precautions against flooding, flash floods, and transport disruptions.
The system is expected to leave Istanbul on Wednesday evening, 23 September. Temperatures are forecast to drop 5 to 7 degrees below seasonal norms, with winds blowing at 30-50 kilometres per hour. The governorship asked for precautions against floods and water inundation.