Heavy rains and stormy winds compelled authorities in Pakistan's largest city, Karachi, to shut down schools on Friday, following a deep depression in the Arabian Sea that the weather office predicts could evolve into a cyclonic storm. The local weather office reported that parts of Karachi experienced 147mm (5.79 inches) of rain overnight. Karachi's mayor, Murtaza Wahab, urged residents to refrain from unnecessary movement in a post on X. The deep depression, located off the Rann of Kutch in India's Gujarat, is anticipated to strengthen into a cyclonic storm on Friday, according to India's weather office, which also noted that it would move northwest over the Arabian Sea in the next two days. Pakistani authorities have advised fishermen and sailors against venturing out to sea, warning of potential flooding in cities and flash floods in hilly areas in the coming days. Disaster management authorities reported on Thursday that more than 28 people have died and around 18,000 have been evacuated since Sunday from cities near the Gujarat coast, with more rain expected as the cyclonic storm intensifies. The Indian Express newspaper noted that the formation of a cyclonic storm over the Arabian Sea in August is an unusual event, with the last such occurrence dating back to 1964.