Delhi Heatwave Gives Way to Storms as Extreme Weather Hits Three Continents

After days of baking under temperatures that repeatedly crossed 43°C, the Indian capital was abruptly placed under an orange alert by the India Meteorological Department late Wednesday, with thunderstorms, lightning and gusty winds forecast to break the heatwave within hours. By Thursday, the change was palpable: pre-monsoon activity intensified across Delhi and the surrounding National Capital Region, driven by a cyclonic circulation over central Pakistan and a western disturbance sweeping into the northwest. Wind speeds were expected to reach 70 kilometres per hour, raising the risk of dust storms and hail alongside the rain, a whiplash that provided immediate relief but also signalled the chaotic onset of South Asia’s summer monsoon.

The tempestuous pattern extended well beyond the capital. From Punjab and Haryana to Uttar Pradesh and Rajasthan, a wet spell was forecast until 13 June, with the most intense lightning, hail and downpours concentrated on the 11th and 12th. In Kerala, where the southwest monsoon is already active, orange alerts warned of very heavy rain — between 11 and 20 centimetres in a single morning — across Alappuzha and Ernakulam districts, while strong surface winds of up to 50 km/h battered the coast. Meteorologists, however, cautioned that after an unusually forceful onset, the monsoon would likely slip into a sluggish phase over Kerala by mid-June, a rhythm that could complicate long-range predictions for the agrarian heartland.

Viewed from Brasília, a strikingly similar meteorological anomaly was unfolding. The onset of June normally ushers in a dry spell across Brazil’s southeast and centre-west; instead, forecasters projected days of instability, overcast skies and frequent heavy showers from Thursday onward. The rain was expected to drench São Paulo, Mato Grosso do Sul, and parts of Minas Gerais and Rio de Janeiro, with irregular but persistent storms advancing into the cerrado through the following week. “The volumes could exceed the historical average for June in several areas,” noted the weather service, a development that could affect the tail-end of the harvest and early winter planting.

Meanwhile, in the Persian Gulf, the story was one of relentless dry heat rather than rain. Temperatures hit 47°C in the United Arab Emirates, and the National Centre of Meteorology warned of south-westerly to north-westerly winds gusting to 40 km/h, whipping up blinding dust and sand that reduced visibility on roads. The hot, breezy conditions added to the region’s sense of climate fatigue, a reminder that extreme weather manifests in violently divergent forms depending on geography.

That three such disparate regions should experience extreme, or atypical, weather in the same week is not in itself proof of a changing climate, but it underscores a season of heightened variability that forecasters in London and Tokyo are tracking closely. In South Asia, the interaction between a late pre-monsoon surge and an arriving monsoon system can either replenish depleted reservoirs or trigger urban flooding; in Brazil, off-cycle rain carries both benefits and risks for agriculture. For now, authorities from New Delhi to São Paulo are urging caution, their early warnings a test of preparedness in an era when the seasons increasingly fail to follow the script.