As per reports, tidal flooding aggravated rainfall-induced flooding in several areas of North Jakarta on Tuesday (20 January), as stated by the Jakarta Governor. High sea levels restricted the drainage of floodwater into the sea despite the deployment of pumping infrastructure.

• Rainfall intensity across multiple monitoring locations in North Jakarta reportedly reached 260 to 280 millimetres, with rainfall lasting for approximately eight hours. Tidal conditions reduced the effectiveness of pumping operations, even as approximately 1,200 stationary and mobile pumps were deployed by authorities.
• Flooding was most pronounced in Kelapa Gading and Gunung Sahari, with water levels reported to have receded by around 0700 hours (local time) on Monday (19 January).