NEW DELHI, May 26 (Xinhua) -- India's financial capital Mumbai was battered by overnight heavy rains that continued until Monday morning, bringing the city to a standstill, officials said. 

The rains, accompanied by thunderstorms, lightning, and gusty winds, disrupted air and surface traffic and caused severe waterlogging in many low-lying areas. 

Locals said low-lying areas in Kurla, Sion, Dadar, and Parel were inundated, and vehicles were seen moving through the waterlogged streets. 

The rains also affected some flights moving to and from Mumbai, following which several airlines issued advisories to passengers. 

The incessant rains also flooded railway tracks, causing delays in suburban train services, which were running five to ten minutes behind schedule. 

The city has been witnessing heavy rainfall and waterlogging in some parts since last week. 

According to the India Meteorological Department (IMD), the southwest monsoon arrived in Maharashtra on Sunday, making it the earliest onset of the annual rainfall season over the state in 35 years. 

The IMD has issued orange and yellow alerts for different parts of Maharashtra. 

Based on color-coded warnings, a red alert signifies taking immediate action, an orange alert suggests being prepared for action, and a yellow alert is an indication to wait and watch for updates.