The India Meteorological Department (IMD) has forecast heavy rainfall across several states, including Delhi, Arunachal Pradesh, Assam and Meghalaya, Bihar, Madhya Pradesh, Uttar Pradesh, Uttarakhand and parts of northeast India. The weather agency has also warned of thunderstorms, lightning and gusty winds in several regions.Arunachal Pradesh: Heavy rainfall; thunderstorm with lightningAssam & Meghalaya: Heavy rainfall; thunderstorm with lightningBihar: Heavy rainfall; thunderstorm with lightning and gusty winds of 30–40 kmphEast Uttar Pradesh: Heavy rainfallUttar Pradesh: Heavy rainfallMadhya Pradesh: Heavy rainfall; thunderstorm with lightning and gusty winds of 30–40 kmphNagaland: Heavy rainfall; thunderstorm with lightningManipur: Heavy rainfall; thunderstorm with lightningMizoram: Heavy rainfall; thunderstorm with lightningTripura: Heavy rainfall; thunderstorm with lightningSub-Himalayan West Bengal & Sikkim: Heavy rainfall; thunderstorm with lightning and gusty winds of 30–40 kmphUttarakhand: Heavy rainfall; thunderstorm with lightningEast Rajasthan: Heavy rainfall; thunderstorm with lightning and gusty winds of 30–40 kmphHaryana: Heavy rainfallDelhi: Heavy rainfallPunjab: Heavy rainfallChhattisgarh: Thunderstorm with lightningJharkhand: Thunderstorm with lightning; also gusty winds of 30–40 kmphWest Bengal: Thunderstorm with lightning and gusty winds of 30–40 kmphAndaman & Nicobar Islands: Thunderstorm with lightning and gusty winds of 30–40 kmphJammu & Kashmir, Ladakh & Muzaffarabad: Thunderstorm with lightning and gusty winds of 30–40 kmphTamil Nadu, Puducherry & Karaikal: Thunderstorm with lightning and gusty winds of 40–50 kmph; strong surface windsInterior Karnataka: Thunderstorm with lightning and gusty winds of 30–40 kmph; strong surface windsArabian Sea: Squally winds of 45–55 kmph, gusting to 65 kmph, likely along/off Somalia, parts of Oman coast and parts of the westcentral, southwest and northwest Arabian Sea.