Weatherwatch: The 1975 storm that unleashed record rain on north London

The Hampstead Storm turned streets into canals as 170.8mm of rain fell, most of it in just two and half hoursOn the afternoon of 14 August 1975 the thunderstorms that developed across eastern England included a particularly intense outbreak in north London that became known as the Hampstead Storm.This storm brought an astonishing 170.8mm (6.72in) of precipitation over a 24-hour period, the largest daily total recorded in the London area. Almost all of it fell in a colossal downpour of rain and hail from 5.30pm to 8.00pm. Continue reading...