1. IMD declares monsoon onset over the south Andaman Sea and Nicobar Islands.
2. Transition to monsoon season noted in the region.
3. Weather patterns changing, with implications for the upcoming season.

Weather Forecast, May 20: The India Meteorological Department (IMD) has made significant announcements regarding the weather conditions in various parts of the country.

On one hand, the IMD has declared the onset of monsoon over the south Andaman Sea and the Nicobar Islands, indicating the transition to the monsoon season. Meanwhile, it has also issued warnings of ‘heat wave to severe heat wave’ conditions over northwest India.

According to the IMD bulletin, the monsoon has commenced over the mentioned regions, hinting at the imminent arrival of the monsoon season.

Additionally, a low-pressure area is expected to form over the southwest Bay of Bengal around May 22, with predictions of it developing into a Depression over central parts of the Bay of Bengal by May 24.

However, northwest India is bracing for intense heat conditions, with the IMD forecasting ‘heat wave to severe heat wave’ conditions over the next five days.

A red warning has been issued for northwest India, indicating the severity of the situation and the need for preventive measures to avert heat-related emergencies.

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Temperatures have soared above normal levels in several regions, with maximum temperatures ranging from 43-46°C in most places over Rajasthan, Punjab, Haryana-Chandigarh-Delhi, and Uttar Pradesh.

The IMD emphasizes the importance of taking precautions, especially for vulnerable groups such as the elderly, infants, and individuals with health conditions, to avoid heat-related illnesses.

The current heat spell is attributed to an anticyclone over northwest India, leading to the subsidence of hot air over the region.

Additionally, hot and humid weather is expected to prevail over certain areas, while warm night conditions are likely to persist in east Rajasthan.

On the other hand, the monsoon has already made its presence felt in some parts of the Maldives, South Bay of Bengal, Nicobar Islands, and South Andaman Sea.

A cyclonic circulation over south interior Tamil Nadu and a trough running from Madhya Maharashtra to south Tamil Nadu are also contributing to weather patterns.

Looking ahead, a low-pressure area is anticipated to form over the southwest Bay of Bengal, with the potential to intensify into a Depression over central parts of the Bay of Bengal.

While the exact track remains uncertain, preparations are underway to monitor and respond to changing weather conditions.