​​A yellow alert has been issued for Mumbai, Thane, and Palghar from September 27-29 indicating thunder accompanied by lightning and gusty winds.

from Times of India https://timesofindia.indiatimes.com/city/mumbai/mumbai-cyclonic-storm-gulab-to-bring-rains-to-city-adjoining-areas-imd-issues-yellow-alert/articleshow/86510923.cms