Thailand’s Meteorological Department has issued warnings for heavy rainfall and potential flash floods affecting 63 of the country’s provinces. The alert, released on June 11, 2026, indicates intensifying monsoon conditions are driving the increased precipitation. Northern Thailand, the upper Northeast, and eastern regions are expected to experience the most significant downpours. Residents are advised to prepare for possible disruptions and flooding. The forecast covers a 24-hour period and signals the full arrival of the monsoon season. Authorities have not yet reported specific evacuation orders, but are monitoring the situation closely. Further updates and regional specifics are expected as the weather system develops.