LAHORE: Punjab’s Provincial Disaster Management Authority (PDMA) has issued a weather alert forecasting dust-thunderstorms and rain in several districts of the province from Monday night to Saturday. According to a PDMA advisory issued on Monday, a westerly weather system is expected to affect the upper parts of the country from the night of May 18 and is likely to persist till May 23. The authority predicted rain, windstorms and isolated hailstorms in Murree, Galiyat, Rawalpindi, Attock, Chakwal, Jhelum, Khushab, Bhakkar, Layyah, Sargodha, Mianwali, Faisalabad, Jhang, Lahore, Sheikhupura, Okara, Gujranwala, Hafizabad, Mandi Bahauddin, Sialkot and Narowal with occasional gaps during the forecast period.