Dense to very-dense-fog is likely to engulf parts of Punjab, Haryana and Uttar Pradesh during the next two-days, IMD predicted on Monday. "Dense to very dense-fog very likely in some parts over Punjab, Haryana and Uttar Pradesh and Dense fog in isolated parts over Uttarakhand, north Rajasthan, north Madhya Pradesh, Sub-Himalayan West Bengal and Bihar during next 2-days," the IMD stated in its bulletin.