Wed May 21 02:10:00 UTC 2025: Okay, here’s a summary and a news article based on the provided text:

**Summary:**

Due to a cyclonic circulation in the lower atmosphere, Tamil Nadu, Puducherry and Karaikal are experiencing light to moderate rainfall with thunderstorms. Chennai is already experiencing light rain since early morning. The Chennai Meteorological Department forecasts the likelihood of light to moderate rainfall until 10 PM in 16 districts: Chennai, Thiruvallur, Kanchipuram, Chengalpattu, Vellore, Salem, Ranipet, Tiruvannamalai, Tirupattur, Kallakurichi, Villupuram, Cuddalore, Ariyalur, Perambalur, Krishnagiri, and Dharmapuri.

**News Article:**

**Rain Alert: Chennai and 15 Other Districts Brace for Evening Showers**

**Chennai, India –** The Chennai Meteorological Department has issued a weather advisory, forecasting light to moderate rainfall with thunderstorms for Chennai and 15 other districts of Tamil Nadu until 10 PM tonight. The cause of the expected rainfall is attributed to a cyclonic circulation in the lower atmosphere.

Chennai residents have already experienced light rain since early this morning. The Meteorological Department specifies that the following districts are likely to experience similar conditions throughout the day:

* Chennai
* Thiruvallur
* Kanchipuram
* Chengalpattu
* Vellore
* Salem
* Ranipet
* Tiruvannamalai
* Tirupattur
* Kallakurichi
* Villupuram
* Cuddalore
* Ariyalur
* Perambalur
* Krishnagiri
* Dharmapuri

Residents in these areas are advised to take necessary precautions and stay updated on the latest weather forecasts. Puducherry and Karaikal are also experiencing similar weather conditions.

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