Heat wave conditions are very likely in isolated pockets of Jammu-Kashmir-Ladakh-Gilgit-Baltistan-Muzaffarabad, Himachal Pradesh, Uttar Pradesh, Punjab, Haryana, Chandigarh and Delhi and central India during April 25-27, Rajasthan on April 25 and 26 and Bihar on April 25. Warm night conditions will prevail in isolated pockets over Punjab, UP, Haryana, Chandigarh, Delhi, MP and Chhattisgarh.