Heavy Pre-Monsoon Showers In Bengaluru: More Thundershowers Today-Tomorrow
Representational Image: AI-Skymet
Key Takeaways:
- Bengaluru city observatory recorded 58.2 mm rainfall in the latest spell.
- More evening and night showers are expected over Bengaluru today and tomorrow.
- Convective activity may trigger isolated heavy rainfall over urban and rural areas.
- Light rain and scattered showers may continue through next week.
Most parts of the capital city Bengaluru witnessed pre-monsoon showers yesterday evening. As it usually happens, the rainfall was unevenly distributed, both in terms of intensity and spread. While the city observatory recorded heavy showers amounting to 58.2 mm rainfall, the HAL weather station measured only 9 mm rainfall. The International Airport, Devanahalli, recorded 7 mm rainfall. Bengaluru has a monthly normal rainfall of 128.7 mm. The city and HAL observatories have recorded 116 mm and 18.2 mm rainfall, respectively, between 1st and 22nd May 2026. More showers are likely today and tomorrow.
The Peninsular India pre-monsoon trough has been displaced far to the east. A north-south oriented trough is extending from North Bihar to South Coastal Andhra Pradesh across Jharkhand, Odisha, Chhattisgarh and Telangana. There is a cyclonic circulation over the East-Central Arabian Sea up to about 10,000 feet, tilting southward with height. The outflow from this circulation and the western periphery of the Peninsular trough are converging over South Interior Karnataka, Rayalaseema and adjoining parts.
Under the combined influence of these systems, scattered rain and thundershowers are likely over these areas. Bengaluru and its neighbourhood are favourable locations for convective activity associated with the convergence zone. This activity will be more pronounced today and tomorrow. Isolated heavy showers are likely over and around Bengaluru, covering both rural and urban pockets. Most of this activity will occur during the evening and night hours. The remnant effect of the seasonal trough will continue to trigger light rain and isolated showers through the next week as well.
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