The sky over Derry got its first taste of Storm Eva in the early hours of Wednesday morning when a remarkable crash of thunder could be heard for miles around.
Although brief, the thunder and lightning happened between 3am and 4am. A hail storm followed.
The sound of the thunder was particularly extreme in the Ballymagroarty, Hazelbank and Rosemount areas, so much so some local residents mistook it for an explosion.
“Did anyone hear the thunder ️in Derry last night? Thought it was a bomb it was that loud,” Tweeted one local.
Others compared the extraordinary weather to the return of Lord Voldemort, a fictional villain from the Harry Potter novels.
Storm Eva is expected to arrive in the North on Wednesday and according to experts it will be at its most severe in the West.
Met Éireann has issued a number of weather warnings that are valid from lunchtime until Wednesday evening.
County Donegal is amongst those counties to receive a Status Orange weather warning.
Gusts of up to 75 miles per hour are expected between 4pm and 9pm local time on Wednesday.