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Commuters wade through a waterlogged road during heavy rain in Kozhikode on October 12, 2021. Image Credit: PTI

New Delhi: The Central Water Commission (CWC) on Tuesday sounded red alert (extreme flood situation) for a river in Kerala and an orange alert (severe flood situation) for five other rivers in Karnataka, Kerala and Tamil Nadu.

The India Meteorological Department (IMD) recorded, during 24 hours ending at 8.30am on Tuesday, extremely heavy rainfall at isolated places over Kerala and Mahe (Puducherry) and heavy rainfall at isolated places over Tamil Nadu.

The IMD has predicted heavy to very heavy rainfall very likely at isolated places over Andaman & Nicobar Islands and Kerala and Mahe; heavy rainfall at isolated places over Coastal and South Interior Karnataka and Tamil Nadu, Puducherry and Karaikal.

Thunderstorm accompanied with lightning and Squall (speed reaching 50-60 kmph) very likely at isolated places over Andaman & Nicobar Islands and with lightning at isolated places over Kerala and Mahe and Tamil Nadu, Puducherry and Karaikal.

This is because of a cyclonic circulation over east-central Arabian Sea. It is very likely to persist during the next 3-4 days, the IMD said in Monday night bulletin.

As per the CWC flood bulletin on Tuesday morning, the red alert has been sounded for River Ithikkara at Arkkannur in Kollam district of Kerala, where the river continued to flow in extreme flood situation. At 6am, it was flowing at a level of 87.1m with a rising trend, which is 0.10 m above its danger level of 87.0m and 0.73m above its previous high flood levels (HFL) of 86.37m reached on August 16, 2018, CWC said.

The orange alert in Karnataka was sounded for River Shimsha at T K Halli in Mandya district. The river continued to flow in severe situation and at 6.00am, it was flowing at a level of 583.49 m with steady trend, which is 0.99m above its danger level of 582.5m and 2.46m below its previous HFL of 585.95m on October 3, 1984.

In Kerala, River Achankovil at Thumpamon in Pathanamthitta district continued to flow in severe situation. At 6am, it was flowing at a level of 10.35m with rising trend, which is 0.35m above its danger level of 10.0m and 3.38m below its previous HFL of 13.735m on July 11, 1978.

River Karamana at Vellaikadavu in Kerala’s Thiruvananthapuram district continues to flow in severe situation, which at 6am was flowing at a level of 93.15m with falling trend, which is 0.15m above its danger level of 93.0m and 3.85m below its previous HFL of 97.0m.

In Tamil Nadu, River Kodaiyar at Thiruvarambu in Kanyakumari district was flowing in severe situation, and at 6am was flowing at a level of 13.01m with rising trend, which is 1.01m above its danger level of 12.0m and 1.67m below its previous HFL of 14.68m May 26, 2021.

River Thambraparni at Kuzhithurai in Kanyakumari district of Tamil Nadu continues to flow in severe situation, which at 6am, was flowing at a level of 3.72m with rising trend, which is 0.22m above its danger level of 3.5m and 5.11m below its previous HFL of 8.83m on August 12, 2010.

Meanwhile, as per IMD data, during 24 hours ending at 8.30am on Tuesday, rainfall recorded was: Kerala: Karipur - 25mm; Kozhikode - 22mm; Cannur - 17mm; Punalur - 14mm; Palakkad - 8mm and Thrissur - 6mm.

Tamilnadu: Valprai - 10mm; Nagappattinam - 6mm and Thanjavur - 5mm.