Due to a north-south trough from Vidarbha to south interior Tamilnadu, isolated to scattered rainfall with thunderstorm, lightning & gusty winds (30-40 kmph) very likely over most parts of south peninsular India during next 5 days. Isolated heavy rainfall very likely over Kerala & Mahe and adjoining Coastal Karnataka during 12th-14th April. Under the influence of successive Western Disturbances isolated to scattered rainfall with thunderstorm & lightning during 11th-14th April and scattered to fairly widespread rainfall with thunderstorm & lightning during 15th-17th April likely over Western Himalayan Region.