A trough running from Uttar Pradesh to Tamil Nadu, across Andhra brought widespread heavy showers to Andhra Pradesh on Saturday. It was followed by more rains on Sunday due to the same weather system. The rainfall figures in the state looked like this: Ongole 44 mm, Vijaywada 40 mm and Kalingapatnam 14 mm. Kurnool recorded the highest rainfall of 76 mm, while the capital city Hyderabad received 11 mm of rain.
Rain in Tamil Nadu was heavier than that in Andhra Pradesh. Some stations in the state recorded around 100 mm of rain. Karaikal and Nagapattinam recorded 95 mm and 99 mm of rain respectively. Weathermen tell us that heavy rain in Tamil Nadu was isolated in nature and that is why the capital city Chennai remained dry with only 0.8 mm of rain. Other stations to have received rain were Tiruchirapalli 1 mm and Nellore 3 mm. The reason for such heavy rain remained the same as in Andhra Pradesh. For the next 24 hours, rain in Tamil Nadu could continue to be good but patchy. It could reduce from Wednesday onwards.
Looks like Kerala has succumbed to El Nino, as the state which usually receives widespread heavy rain in the month of July has had very less rain in the first week of the month. And the start of the second week doesn't promise any good rains either. Rain in Kerala was scanty on Sunday with less than a millimeter of rain observed in most major cities. Thiruvananthapuram recorded traces of rain, Alappuzha received 0.2 mm and Kozhikoze had 1 mm of rain. There won't be any good rain in the state for the next three to four days as there isn't any strong monsoon surge or a weather system in sight.
Karnataka has been luckier than Kerala with a trough bringing rain in the interiors of the state and westerly surge bringing good rainfall along the coastal parts. In the last 24 hours, there was isolated heavy rain in Bijapur of about 70 mm. The capital Bangalore received 5 mm of rain. And along the coast, Karwar recorded 14 mm of rain, Honavar 26 mm and Mangalore 6.5 mm.
Currently, the rain deficit being experienced in the respective states is : Kerala 37%, Tamil Nadu surplus by 16%, north interior and coastal Karnataka are deficit by 52% and 49% respectively. Deficit is the highest in Andhra Pradesh, of over 60%.