Thunderstorms dumped at least an inch of rain yesterday and knocked out power at a few locations, with more stormy conditions forecast for today.

Bermuda’s weather is being affected by an upper-level low, a low pressure system that started north- west of the Island and is approaching with stronger winds, rain and more thunder.

The low pressure disturbance is so called because it extends high into the atmosphere, a Bermuda Weather Service meteorologist explained.

Rainfall as of yesterday stood at 2.24in — which, including the recent showers, is roughly in line with the August average.

A lightning strike shortly after 10am yesterday hit a main power line near Gibbs Hill Lighthouse, Southampton.

It knocked out electricity for about 255 customers for about an hour, Belco advised.

There were three other “isolated weather-related outages” across Sandys, Warwick and Smith’s.