Tropical Cyclone Nilam has unleashed torrential rain and damaging winds as it landed in southeastern India on Wednesday.
Landfall was within 50 miles south of Chennai (Madras), in northern Tamil Nadu state.
There were no early reports of injury or significant damage.
The expected landfall was to be between Puducherry and Nellore by Wednesday evening, the India Meteorological Department (IMD) said.
Tropical Cyclone Nilam crosses the Tamil Nadu coast near Chennai. Time is about 1100 UTC Wednesday, Oct. 31, 2012.
The IMD warned of winds to 110 km/h, or almost 70 mph, with damage to huts, trees, electrical infrastructure and standing crops.
Warned rainfall was above 25 cm, or 10 inches, enough to trigger serious flooding.
Storm surge was forecast to be 1.0 to 1.5 meters, or about 3 to 5 feet, bringing flooding along low-lying shores.
Sri Lanka, which was brushed by the cyclone's flooding rain and strong winds early in the week, was allowing thousands of evacuated people to return to their homes, the Australian website said on Wednesday.
The last tropical cyclone to strike Tamil Nadu happened in January, when Cyclone Thane killed 46 people and spread a trail of destruction.
Neighboring Andra Pradesh state had its most severe tropical cyclone in 1977, when unnamed storm slammed the Krishna River delta region. The confirmed toll was 14,204 killed, but estimated loss of life was put at 50,000, according to Wikipedia.
The plum rains are known as "meiyu" in China, the "baiyu" or "tsuyu" in Japan, and the "jangma" in the Koreas. The heart of the plum rain season stretches from early June to mid-July, with a tendency to shift south to north across the affected area.
In the wake of the mid-June cloudbursts, most of Pakistan to northwestern India last week saw a return to dry, hot weather typical of the weeks leading up to the Monsoon onset. It was as if the Monsoon withdrew to its "normal" position for the latter half of June.
The 38.5 degree C (101 degrees F) reading Tuesday in Ajaccio, Corsica, may have been tops in Europe.
Monsoon Onset was June 13th, 2013, in Delhi, almost two weeks earlier than average. The June 15th onset at Karachi and Islamabad was more like three week ahead of schedule.
In Pakistan, hit-or-miss downpours missed the Sindh capital, Karachi. One did hit Pad Idan, where it left 60 mm of rain Wednesday. This was more than 20 times greater than the normal June rainfall.
It is still possible that this scenario is over wrought as to the intensity and spread of rain in Pakistan and northwestern India. However, it is the hunch of the present forecaster that some very unusual weather is going to unfold in the Subcontinent during the next week!