Spain weather warning: Orange alerts issued as storms, hail and flooding threaten Valencia and Mallorca

Residents and holidaymakers in parts of eastern Spain are being warned to keep an eye on the weather as heavy rain, hail, thunderstorms and strong winds affect the Valencia region and the Balearic Islands.

Mañana cambio brusco de tiempo:

➡️Tormentas fuertes o muy fuertes en el este peninsular, Ibiza, Formentera y Mallorca; podrían venir acompañadas de granizo y rachas muy fuertes de viento.

➡️Bajada notable o extraordinaria de temperaturas máximas en el norte y centro peninsular. pic.twitter.com/FJ0hT8ODF4

— AEMET (@AEMET_Esp) September 15, 2026

Orange and yellow weather alerts are in place on Tuesday, September 15, with coastal areas of the Comunidad Valenciana among those facing potentially dangerous conditions.

Orange and yellow alerts across Valencia

AEMET, Spain’s state weather agency, has issued warnings for a combination of heavy rainfall, thunderstorms, hail and strong winds. Parts of the Valencia region face the higher orange warning level, while yellow alerts cover other areas where storms could still cause difficult conditions.

Heavy downpours can cause localised flooding in a short space of time, particularly around low-lying roads, drainage channels and normally dry waterways. Hail and sudden gusts can also create problems for drivers, cyclists and anyone caught outdoors.

Conditions can change quickly during thunderstorms, meaning a quiet start to the day does not necessarily indicate what is coming later.

15/09 11:36 AVISOS MAÑANA | Comunitat Valenciana: tormentas y lluvias. Nivel máximo de aviso: naranja.
Actualizaciones en https://t.co/R3Fs2JzKgr pic.twitter.com/OIOz49xADr

— AEMET Comunitat Valenciana (@AEMET_CValencia) September 15, 2026

Mallorca faces another weather threat

Mallorca is also on alert, with thunderstorms and heavy rain creating a risk of flooding in vulnerable areas. That warning will be particularly important for anyone planning to travel around the island, as roads can become hazardous quickly when intense rain falls over a short period.

Mallorca has already experienced a serious spell of stormy weather this month. On September 9, emergency services dealt with 185 incidents on the island after heavy rain, thunderstorms and strong winds, with flooding and fallen trees among the problems reported.

Thursday, September 17, is now attracting particular attention, with forecasts pointing to a potentially severe combination of storms and flooding in Mallorca.

Drivers called on to take care

Anyone travelling during periods of intense rainfall should avoid flooded roads and never attempt to drive through water when its depth is unclear.

Cars can lose grip surprisingly quickly in standing water, while fast-moving floodwater can become dangerous even when a road appears passable. People living in affected areas should also bring in loose items from balconies and terraces, check drains and gutters, and keep up with the latest local warnings.

AEMET says its Meteoalerta system provides updated information on potentially dangerous weather across Spain for up to 72 hours, so conditions and warning levels can change as forecasts are updated.

Anyone in Valencia, Alicante, Castellon or Mallorca should check the latest alerts before setting out, particularly if heavy storms are forecast for their area.