In a weather advisory, the Pakistan Meteorological department said that "Due to the developing low pressure area off Indian Coast in the Arabian Sea, the sea breeze along Pakistani coastline will weaken. Under such conditions, temperatures along Pakistan coastal areas including Karachi will gradually increase during the next 4-5 days resulting into moderate heat wave conditions. Daytime highest temperatures in Karachi may cross 40°C on Tuesday and Wednesday. Continental air is prevailing over most part of the country. A shallow westerly trough persists over extreme north of Pakistan.