KARACHI (INP) - A low air pressure in Arabian Sea is likely to form a tropical cyclone 600km off Karachi coast on Tuesday. The Pakistan Meteorological Department (PMD) says that the low air pressure is forming a tropical cyclone in the eastern Arabian Sea. According to the PMD, the temperatures would rise in Sindh and Punjab following a change in wind pattern due to the low air pressure in eastern Arabian Sea. A rain spell is also expected in coastal areas of Balochistan and Sindh. The PMD says that the weather conditions are indicating a hurricane and its tropical cyclone warning centre is observing the sea pattern.