The low pressure area over southeast Arabian Sea and neighbourhood now lay centered as a well marked Low Pressure area over the same region with associated cyclonic circulation and it was very likely to concentrate into a Depression and move northwestwards during next 24 hours.
Met office sources on Saturday said it was very likely to intensify into a Cyclonic Storm and move towards Oman Coast thereafter, even as the Tamil Nadu government has geared up its official machinery and put in place all precautionary arrangements in districts to meet the situation.
The cyclonic circulation over south Andaman Sea and neighbourhood persists.
Another low pressure area was likely to form over south Bay of Bengal and neighbourhood around October eight. It was likely to become more marked and move towards Odisha and adjoining north Andhra Pradesh Coasts during the subsequent 72 hours.
Under its influence Tamil Nadu, Kerala and Lakshadweep were likely to witness widespread rain / thundershowers with heavy / very heavy rains at isolated places during next 45 days.
Ghat areas of Tamil Nadu and adjoining parts of Kerala were also likely to experience isolated extremely heavy falls around tomorrow, the day Red Alert was sounded for Tamil Nadu and Kerala as the rainfall might be in excess of 25 cms.
The cyclonic circulation over south Coastal Tamil Nadu and neighbourhood also persists.
Under its influence rough to very rough sea conditions were very likely to prevail over South and central Arabian Sea. Fishermen were advised not to venture into these areas for the next four days from today.