Scotland weather: lightning storms trigger flood alerts after heatwave

Thunderstorms follow the heat

Scotland was hit by thunderstorms and lightning on Friday after the country recorded its hottest day of the year so far, with temperatures reaching 31.2C in Threave, Dumfries and Galloway, on Thursday.

The change in conditions brought heavy rain, intense lightning and flood alerts within hours of the heat peak, turning a brief spell of hot weather into a fast-moving storm risk for much of the country.

The Met Office kept a yellow thunderstorm warning in force across Scotland except Shetland, while the Scottish Environment Protection Agency issued flood alerts and one flood warning as the weather system moved in.

What the reports said

Contemporary reporting described lightning storms spreading across Scotland through Friday morning and afternoon, with one report saying about 32,000 lightning strikes were recorded in 24 hours.

The Guardian said the Met Office warning covered Scotland for the whole day, while SEPA alerts were in place for every area of Scotland other than Shetland. The Times later reported the large number of strikes and said the warning remained active.

The storm front arrived after an unusually hot spell that had already pushed conditions into heatwave territory in parts of Scotland. Meteorologists said the unstable air following the heat made thunderstorms more likely and potentially more severe.

Disruption and damage

Reporting linked the storms to disruption in Edinburgh, Lanarkshire and East Kilbride, with roads affected by flooding and storm conditions in some areas.

A separate report said flights were unable to land or take off at Edinburgh Airport at one point, while rail services, roads and at least one school were also affected.

There were also reports of a house fire in Midlothian after lightning strikes, with the roof destroyed. The reporting tied the damage to the storm activity, although the lightning cause was not formally confirmed in the coverage.

What forecasters were watching

Officials and forecasters warned the weather could still bring flash flooding, hail, strong winds and heavy rainfall later on Friday.

That left open the chance of further localised disruption if storms developed more intensely in any part of Scotland, especially where ground conditions were already saturated by earlier rainfall.

The key questions through the afternoon were whether SEPA would expand or lift its flood alerts, and whether the Met Office would later downgrade or extend the thunderstorm warning.

Further transport cancellations, road closures, school closures or emergency service reports would indicate whether the system was easing or still causing new impacts across the country.