Weather warnings are in force across southeast Spain as a new heatwave meets unstable atmospheric conditions, bringing severe storms with hail and powerful wind gusts. The Spanish meteorological agency AEMET has activated alerts for several provinces. The greatest risks are expected from 17:00 onwards in the southern part of the Valencian Community, the extreme southeast of Castilla-La Mancha, and the interior of the Region of Murcia.
AEMET’s Meteoalerta system issues localised warnings for up to 72 hours and updates them as hazardous conditions develop. Its alerts identify specific areas and validity periods, rather than treating severe weather as a single nationwide event. On 17 October, forecasts also pointed to worsening conditions on Spain’s Mediterranean side and in the southeast, with storms and hail expected in parts of Murcia.
AEMET says intense surface heat is meeting cold air at higher altitudes, while converging winds create ideal conditions for storms to develop rapidly. The storms are forecast to bring sudden downpours and localised hail, with potentially dangerous downbursts, violent downward air currents that can generate gusts exceeding 80 to 90 km/h. The worst-affected areas are expected along a stretch from Valencia through eastern Albacete to northern and western Murcia. Isolated cells could also reach other parts of the eastern third of the peninsula.
Downbursts, known as “reventones” in Spanish, are particularly hazardous because they can develop suddenly and cause impressive damage. They form when a fast-moving column of air descends from a storm cloud, hits the ground and spreads rapidly, sometimes producing wind speeds above 120 km/h. Often mistaken for tornadoes, downbursts have a distinct radial wind pattern and can cause similar levels of damage to property and infrastructure.
The Harmonie weather model predicts that storms will move quickly from west to east, at times affecting Valencia’s coastal areas. Heavy rainfall accumulations are not expected, but precipitation may contain dust and leave muddy rain. The European Severe Storms Laboratory has also highlighted the risk of hailstones larger than 2 cm, particularly between Valencia and eastern Albacete. Electrical activity could be impressive in some locations, as wildfire risk reaches extremely high levels across much of the eastern interior.
AEMET has issued yellow storm alerts for the southern interior of Valencia and Hellín-Almansa (Albacete), with alerts also covering the Altiplano de Jumilla-Yecla and the northwest of Murcia. The warnings point to a likelihood of strong wind gusts and hail. Forecasts published on 17 October also identified the Valle del Guadalentín and Lorca, as well as Águilas, Campo de Cartagena and Mazarrón, as areas where storms could become locally very intense. Parts of Murcia were under orange warnings, reflecting the higher risk forecast for those specific areas and periods. Local authorities are urging residents to stay alert, especially in places prone to flash flooding or wind damage.
While the southeast braces for afternoon storms, a new heatwave is taking hold across the broader region. Temperatures are forecast to reach up to 45°C in valleys and lowlands in the east and southeast, with oppressive nights when temperatures may not fall below 25°C, particularly along the Mediterranean coast and in Andalusia. Several provinces have already exceeded official heatwave thresholds, and high temperatures are expected to persist through the week.
Meteorologists expect weather patterns to shift over the weekend. A descent of the polar jet stream is expected to let a pocket of cold air cross the peninsula, bringing a general drop in temperatures and renewed storm activity across multiple regions. Forecasts for 17 October described a cold front and an upper-level trough increasing instability across the Iberian Peninsula and the Balearic Islands. Locally intense showers and thunderstorms are possible. Until then, extreme heat combined with severe localised storms remains the basic concern, with the potential to worsen wildfire risks and cause further disruption.
Spain has faced a series of challenging weather events this season, including recent wildfires and episodes of Saharan dust. For example, recent Saharan dust outbreaks have led to muddy rains and air quality concerns in Mediterranean regions, compounding the impact of heat and storms on daily life and infrastructure.
Southeast Spain is particularly vulnerable to rapid weather changes because of its varied topography and proximity to Mediterranean and continental air masses. When these factors converge during extreme heat, sudden and intense storms often follow. Residents and local authorities are advised to monitor official updates and take precautions as conditions evolve.
