India Meteorological Department (IMD) has issued an orange alert for Assam, Meghalaya, Nagaland, Manipur, Mizoram and Tripura for March 30-31 with a forecast of rain & thunderstorms over these northeastern states. It has also predicted an "intense wet spell" over northeast India until April 2. IMD said fairly widespread to widespread rain with thunderstorm and lightning at isolated places are very likely over northeast India during March 29-April 2 with maximum activity on March 30-31. This will happen under the influence of strong lower-level southwesterly winds from the Bay of Bengal. Isolated heavy rainfall on March 29 & April 1 and isolated heavy to very heavy rains on March 30 and 31 are very likely over south Assam, Meghalaya, Tripura and Mizoram, the IMD said. Isolated heavy rains are likely over Arunachal Pradesh on April 1.