Monsoon winds have entered with intensity in upper and central Pakistan, with heavy rain is predicted for a week from July 20 to 21, said the Met Office.
There is a risk of inundation of low-lying areas of Punjab and Sindh, and landslides and flooding.
The NDMA has issued a new advisory.
More rain-wind and thundershowers with scattered heavy rainfall are expected in Kashmir, Gilgit-Baltistan, Islamabad, Rawalpindi, Murree, Attock, Chakwal, Jhelum, Sialkot, Narowal, Lahore, Gujranwala, Gujrat, Sheikhupura, Faisalabad, Jhang, Mianwali, Khushab, Sargodha, Hafizabad, Mandi Bahauddin, Swat, Mansehra, Kohistan, Abbottabad, Haripur, Peshawar, Mardan, Swabi, Nowshera, Kurram, Kohat from July 20 to 26.
More rain and wind or thundershowers (with isolated heavy rainfall) is expected in Bannu, Lakki Marwat, D. I. Khan, Sahiwal, Okara, Bhakkar, Layyah, Multan, Khanewal, Pakpattan, Vehari, Rajanpur, Dera Ghazi Khan, Bahawalpur, Bahawalnagar, Rahimyar Khan and Khanpur from July 21 to 26 with occasional gaps.
It is slightly different for Balochistan’s Zhob, Ziarat, Barkhan, Loralai, Bolan, Kohlu, Kalat, Khuzdar, Lasbella, Naseerabad, Jaffarabad and Sibbi seeing rain from July 22 to 26.
This weather is predicted in all districts of Sindh from July 24 to 26.
Heavy rains may lead to urban flooding in Rawalpindi/Islamabad, Peshawar, Nowshera, Mardan, Faisalabad, Lahore and Gujranwala from July 20 to 23.
In Karachi, Hyderabad, Thatta, Badin, Shaheed Benazirabad, Jamshoro, Mirpurkhas, Dadu, Umer Kot, Jacobabad, Larkana and Sukkur flooding is at risk July 24 to 26.
Flash flooding is expected in local nullahs of Islamabad/Rawalpindi, Abbottabad, Mansehra, Dir and Kashmir from July 20 to 23.
Rainfall may trigger landslides in Kashmir, Galiyat, Murree, Chillas, Diamir, Gilgit, Hunza, Astore and Skardu during the forecast period.Travelers and tourists are advised to be cautious.