Overview

• The Met Office has issued yellow thunderstorm warnings for parts of Scotland and Northern Ireland until 10pm Thursday, predicting up to 70mm of rain in two hours with risks of flash floods, power outages and travel disruption.
• Much of England remains in its fourth heatwave of the summer, with temperatures forecast to stay well above normal through late August as officials contend with a nationally significant water shortfall.
• The India Meteorological Department has raised orange and red alerts for Mumbai and adjoining Maharashtra districts and yellow warnings for West Bengal and Punjab, forecasting heavy to very heavy rainfall with potential landslides and waterlogging.
• US and Canadian forecasts project an early-season atmospheric river to deliver a month’s worth of precipitation to Washington, Oregon and British Columbia while a revitalized North American Monsoon could bring thunderstorms and wetting rain to the Desert Southwest.
• Forecasters highlight that the track of Tropical Storm Erin over the North Atlantic and diverging long-range model projections are key uncertainties that could alter late-August weather patterns across multiple regions.