Households in northern and coastal Odisha had just cleared mud and debris from the first flood. Then the second deluge arrived.
Fresh torrential rains hit the region. Successive low-pressure systems formed over the Bay of Bengal within a fortnight. These systems caused the Brahmani and Baitarani rivers to breach their banks again. The waters submerged villages that had only begun to recover.
The latest floods affected over 9.4 lakh people across six districts. Authorities evacuated more than 2 lakh people. Chief Minister Mohan Charan Majhi announced a ₹1,110-crore relief package. He split it into two tranches.
Low-pressure systems and depressions normally occur during the southwest monsoon. However, meteorologists noted their persistence and slow movement this year. This pattern produced prolonged heavy rain over Odisha.
IMD scientist Umasankar Das explained the sequence. A low-pressure area formed over the northwest Bay of Bengal on July 25. It intensified into a depression the next day. The system travelled less than 500 km over four days. It reached near Jharsuguda. The very slow movement brought huge rainfall. This led to flood conditions across the state.
The latest flooding intensified around August 13-16. It followed a spell in late July and early August. That earlier event affected as many as 22 districts. Balasore, Bhadrak, Jajpur, Mayurbhanj, Keonjhar and Kendrapara faced the worst impact. Some riverside villages suffered inundation multiple times.
July saw four low-pressure systems develop. Two of them intensified into deep depressions. One system formed around July 25-26. It remained nearly stationary for several days. It dumped large amounts of rain over the state.
IMD data showed July 2026 recorded 24 days affected by low-pressure systems. The normal figure stands at about 13.5 days. This marked the highest such count since 2017.
The weather pattern also involved the monsoon trough. Senior meteorologist Sarat Sahoo from SOA University described its position. The trough normally extends from Ganganagar to the Bay of Bengal through north India and West Bengal. This year it stayed close to Odisha and West Bengal.
Sahoo added that the trough favours small cyclonic circulations. Changes in wind patterns create these circulations. Rain then continues. Because the trough remains almost in the same position, rain falls in Odisha almost every day. Rainfall grows heavier when a weather system develops. Light to moderate rain continues on other days. Isolated areas still receive heavy rain.
Regional Meteorological Centre director Manorama Mohanty offered a different view. She said nothing unusual occurred in the formation of low-pressure systems during the monsoon. The monsoon trough normally follows a path through the northern Bay of Bengal. Good rainfall in Jharkhand and Chhattisgarh also contributed to rising river levels in Odisha.
Rivers already ran high. Rainfall in neighbouring states added extra water. Releases of excess water from upstream areas increased the pressure. Rivers crossed danger marks at several locations. Embankment pressure, localised breaches and waterlogging worsened the impact in low-lying areas.
Odisha entered the second flood spell with its catchments already saturated. The state received more than 1,000 mm of cumulative monsoon rainfall by August 19. The long-period average for June 1 to August 19 stands at about 786.5 mm. This created a surplus of around 28 per cent.
The floods hit agriculture particularly hard. Thousands of hectares of paddy and other crops remained submerged. Schools closed in several districts. University examinations were postponed. Urban areas faced disruption.
Retired agriculture director R L Das explained the soil condition. Saturated soil could absorb little additional water after prolonged rainfall. Rivers and drainage channels already carried substantial volumes. Continued rain therefore left agricultural land waterlogged. It also weakened embankments, roads and other infrastructure.
The Council on Energy, Environment and Water highlighted Odisha’s vulnerability. The state’s long coastline and heavy monsoon dependence expose it to extreme rainfall, heat, humidity and prolonged dry spells.
CEEW fellow Vishwas Chitale cited rainfall trends. Odisha’s average monsoon rainfall rose from 1,052 mm during 1981–2010 to 1,159 mm during 2011–2024. Projections show a moderate rise to 1,211 mm during 2031–2050. It could reach 1,309 mm during 2051–2070.
IMD records show Odisha received 1,150.9 mm of monsoon rainfall in 2025. This continued a pattern of relatively high rainfall over the past decade. The state recorded 1,092 mm in 2024 and 1,115.4 mm in 2023. The year 2022 saw 1,196.8 mm. The highest annual monsoon rainfall in the 2016-2025 period occurred in 2018 at 1,290.2 mm. It was followed by 1,232.5 mm in 2019.
Meteorologists expect another low-pressure area to form in a couple of days. This development raises further concerns over the state’s continued vulnerability.