Spain: unfavorable weather forecast in the Balearic Islands and the eastern and southern continental regions until at least October 12

October 11, 2022 | 07:45 UTC

Severe weather forecast for parts of eastern and southern Spain until at least October 12. Flooding and associated disturbances possible.

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Event

Heavy rain and thunderstorms are forecast for the Balearic Islands and parts of eastern and southern mainland Spain until at least October 12. The heaviest rainfall is expected in parts of the Balearic Islands, where total rainfall of around 10 cm is possible within 2-3 hours. Thunderstorms are expected to break out in parts of the Balearic Islands, much of the interior of Andalusia, southern Extremadura and the autonomous communities in the northeast and northwest of Murcia, as well as in the city Autonomous Ceuta. Thunderstorms can be accompanied by strong gusts of wind, lightning and possible hailstorms.

Since October 11, the Spanish National Meteorological Agency (AEMET) has issued the following weather warnings in the affected area:

  • Orange heavy rain and thunderstorm warnings (the middle level on a three-level scale): Through the Balearic Islands except for the northwest of Mallorca.

  • Yellow Heavy Rain Warnings: In the rest of the affected area.

  • Yellow storm warnings: Northwest Mallorca in the Balearic Islands, the autonomous city of Ceuta and parts of the autonomous communities of central, eastern, northwest and western Andalusia, southern Extremadura and northeast and northwest Murcia.

Authorities could update and possibly expand coverage of weather warnings over the next few days.

Dangerous conditions
Sustained heavy rains could trigger flooding in low-lying communities near rivers, streams and creeks. Urban flooding is also possible in developed areas where stormwater drainage systems are easily overwhelmed or lacking. Sites located downstream of large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rainfall has saturated the ground. Disruptions to electrical and telecommunications services are possible when major floods or landslides affect utility networks.

Transportation
Floodwaters and debris flows can render some bridges, rail networks or roads impassable, impacting overland travel in and around affected areas. Puddling of road surfaces could lead to hazardous driving conditions on regional highways. Authorities may temporarily close some low roads that are inundated by floodwaters. Extreme weather conditions could also lead to flight delays and cancellations at regional airports. Flooding could block regional rail lines; freight and passenger train delays and cancellations are likely in areas that experience heavy rain and possible track flooding.

Localized business interruptions may occur in low areas; some businesses may not be operating at full capacity due to facility damage from flooding and the inability of some employees to get to job sites.

Tips

Monitor local media for weather updates and advisories. Confirm all transportation reservations and business arrangements before traveling to affected areas. Obtain up-to-date information on road conditions before driving or routing expeditions in areas where extreme weather conditions are expected; plan for possible supply chain disruptions in affected areas. Stay away from high streams, creeks and other waterways prone to flash flooding. Do not attempt to navigate flooded roads. Use caution in high terrain due to the threat of landslides, as well as in mountainous areas where avalanches pose a threat. Charge battery-powered devices during extended power outages.

Resources

WeatherAlarm
State Meteorological Agency (AEMET)