Dense to very dense fog warnings issued for 8 states

IMD has issued dense to very dense fog warnings for eight states. It said that Punjab and Haryana will witness dense to very dense fog between December 20 and 25. Uttar Pradesh will witness dense to very dense fog between December 21 and 25, IMD added. Warnings have also been issued for Uttarakhand, Bihar, Jharkhand, Odisha and West Bengal.