Authorities in Iran, Sweden, the United Arab Emirates and Mexico have issued a series of weather warnings for the coming days, forecasting a volatile mix of torrential rain, lightning, strong winds, dust storms and extreme heat that could affect millions of people. The alerts, ranging from yellow-level cautions to more urgent notices, point to localised risks of flash flooding, falling trees, power cuts and dangerously reduced visibility on roads.

In Sweden, the national meteorological institute SMHI has declared multiple yellow warnings for southern and central regions. A band of thunderstorms moving southeast from southern Norway is expected to bring heavy downpours and sudden, violent wind gusts of 22 to 28 metres per second — locally reaching storm force — to the west coast, including Gothenburg, and later to Gotland. The warnings, in effect from Tuesday afternoon into the night, caution that roads may be blocked by fallen trees, public transport could face delays, and loose objects such as garden furniture may become airborne. Train services in Skåne and Blekinge have already been suspended on several routes until early Wednesday. Further north, a separate alert for torrential rain covers parts of Värmland, Örebro and northern Västra Götaland, where 35 to 70 millimetres of rain could fall in a short time, raising the risk of urban flooding and poor driving conditions.

Iran’s meteorological organisation has warned of two distinct hazards. In the northwest, including West and East Azerbaijan and the Ardabil highlands, scattered thunderstorms with hail and temporary strong winds are forecast from Wednesday to Friday, with a risk of flash floods in mountain valleys. Simultaneously, a pressure gradient will intensify winds across a broad swath of the country from Thursday to Saturday, affecting provinces from Khorasan in the northeast to Khuzestan in the southwest. In Khorasan Razavi, temperatures in hot regions are expected to exceed 40°C, while dust storms could cut visibility and push air quality to unhealthy levels for sensitive groups. The capital Tehran will see gusty winds and dust, with maximum temperatures reaching 39°C.

The UAE’s National Centre of Meteorology forecasts fair to partly cloudy skies, with humidity at night along the coast. Winds will be light to moderate, freshening at times and stirring dust in western areas during the day. Sea conditions in the Arabian Gulf will be slight to moderate, occasionally rough in the west. In Mexico, the National Civil Protection Coordination has issued an alert for very heavy rainfall in Veracruz, Oaxaca, Chiapas and Tabasco, with accumulations of 75 to 150 millimetres, and strong rains in several other states. Authorities have urged residents to avoid crossing swollen rivers and to stay away from beaches and coastal structures.

All the warnings remain in effect through the coming days, with meteorological services continuing to monitor the evolving systems. No casualties have been reported so far, but emergency services in the affected regions have been placed on alert.