A sprawling axis of severe spring weather has taken shape across the Eurasian landmass, with the most dramatic manifestation unfolding in Iran. The country’s national meteorological service warned late Monday that a vast corridor of instability, stretching from the northwest to the eastern provinces, would deliver torrential rain, thunder, damaging gusts and hail over the next 48 hours. At least twenty provinces— including Tehran, both Azerbaijans, Gilan, Mazandaran, Kurdistan, Kermanshah and the Khorasans— were placed on alert for flash flooding and sudden hail, with officials warning that the turbulent conditions will persist in waves through to Friday. In the capital and the southern slopes of the Alborz mountains, authorities anticipate dust storms compounding the disruption, an addition that reflects the region’s acute vulnerability to multi-hazard spring transitions.

Viewed from Rabat, the same atmospheric restlessness has triggered an orange-level alert across a swathe of central and northern Morocco. The kingdom’s General Directorate of Meteorology expects thundery downpours of 30 to 40 millimetres to lash provinces including Khemisset, Khenifra, Beni Mellal, Marrakech and Al Haouz on Monday afternoon and evening, accompanied by hail and strong winds. A secondary zone, running from Chefchaouen to Taza along the Rif and pre-Rif corridors, faces similar accumulations through Tuesday morning. These are agriculturally sensitive areas where heavy rain falling on bone-dry late-spring soils can trigger rapid runoff, raising concerns for both smallholder plots and larger irrigation-fed estates that supply European markets.

In contrast, the picture from Moscow is one of grudging retreat. A vigorous cyclone that spun up over the Gulf of Bothnia at the weekend briefly pulled a pulse of unseasonable warmth into central Russia before swinging its cold rear flank across the region. The result was a messy mix of snow, sleet, rain and winds gusting to 20 metres per second that downed trees and snarled transport across the Central Federal District. Russia’s Hydrometcentre said the worst will persist through Tuesday before beginning to ease on Wednesday and Thursday. By the first days of May, forecasters expect a gradual temperature climb, though the ground in many areas will remain waterlogged and white-fringed long after the storm core drifts towards the Urals.

Analysts in London caution against viewing these events as disconnected weather noise. The simultaneous severity from North Africa to the Caspian and on to the Russian plain suggests a highly meridional jet stream pattern, one that is forcing deep, slow-moving troughs and ridges to anchor themselves across continents. Such configurations, some climate scientists argue, are becoming stickier as the Arctic warms disproportionately, prolonging bouts of unsettled weather in the temperate belt. In Iran and Morocco, the immediate challenge is humanitarian and infrastructural: managing flash floods in cities with patchy drainage and securing fragile hillside communities against hail and landslides. For Russia’s emergency services, the focus is on restoring power and clearing debris before the May Day holidays. But the broader lesson— yet again— is that spring, once a predictable thaw, is increasingly a season of whiplash extremes that tests the resilience of states from the Atlantic to the Hindu Kush.