ClimavisoRain in Illes Balears, Andalucía and elsewhere, 21–23 September 2021
21 September 2021 to 23 September 2021. Updated 26 October 2026.
Over 3 days, 33 of Spain's 182 warning zones had an orange or red warning for rain: 55 zone-days at orange or red, 1 of them red. The day with the most zones at orange or red was 23 September, with 19 zones.
21 September was the day with the most people in zones under an orange or red warning: 11.6 million people live there (INE municipal register, 2025).
How it compares
- It is number 60 of 119 episodes since June 2018 by zone-days at orange or red.
- Among the 35 rain episodes, it is number 12.
Day by day
| Day | Red | Orange | Yellow | Orange or red warnings for |
|---|---|---|---|---|
| Tue 21 September | — | 18 | 22 | rain, storms |
| Wed 22 September | — | 18 | 28 | rain, storms |
| Thu 23 September | 1 | 18 | 27 | rain, storms |
Zones with a warning each day, at their highest level that day.
The zones
And 43 more zones with yellow warnings only.
What AEMET's stations measured
The most measured in the zones with an orange or red warning, on their warning days: 121.8 l/m² of rain in 24 h at Oliva (Litoral sur de Valencia) on 21 September.
| Zone | Most rain in 24 h |
|---|---|
| Litoral sur de Valencia | 121.8 l/m² Oliva · 21 September |
| Litoral de Huelva | 119.2 l/m² Cartaya · 23 September |
| Interior sur de Valencia | 105.6 l/m² Xàtiva · 22 September |
| Ibiza y Formentera | 104.0 l/m² Sant Joan de Labritja · 21 September |
| Norte y nordeste de Mallorca | 102.2 l/m² Muro, S'Albufera · 21 September |
| Litoral norte de Alicante | 79.0 l/m² Pego · 21 September |
| Menorca | 74.8 l/m² Menorca, Aeropuerto · 21 September |
| Campiña sevillana | 74.4 l/m² Carrión de los Céspedes · 23 September |
| Barros y Serena | 64.6 l/m² Zafra · 22 September |
| Andévalo y Condado | 56.0 l/m² El Cerro de Andévalo · 22 September |
| Aracena | 53.4 l/m² Aroche · 22 September |
| Sur de Badajoz | 43.8 l/m² Monesterio · 23 September |
| Vegas del Guadiana | 43.8 l/m² Puebla de Obando · 23 September |
| Sierra norte de Sevilla | 37.4 l/m² Guadalcanal · 23 September |
| Sierra Tramontana | 33.0 l/m² Sierra de Alfabia, Bunyola · 21 September |
| Prelitoral sur de Tarragona | 31.6 l/m² Estación de Tortosa (roquetes) · 22 September |
| Sierra y Pedroches | 29.5 l/m² Hinojosa del Duque · 23 September |
| Grazalema | 21.2 l/m² Olvera · 21 September |
| Sur de Mallorca | 20.6 l/m² Campos, Salines Llevant · 22 September |
| Interior de Mallorca | 14.2 l/m² Sineu · 21 September |
And 11 more zones with an orange or red warning.
For each zone, the highest value its AEMET stations measured on the episode's warning days (the lowest, for the low temperature), with the station and the day. Rain from 07:00 to 07:00 UTC; gust: the day's strongest. It is what the zone's stations measured, not every town, and a measurement, like a warning, is not damage.
How AEMET's warnings unfolded
The red warning reached 1 zone-days, and AEMET always issued it for the current hour: warnings are also raised as things unfold. The first warning of any level for those same days had come a median 37 h earlier.
| Zone | Day | First warning | Red issued | For · notice |
|---|---|---|---|---|
| Litoral de Huelva | Thu 23 | Tue 21 Sep, 23:03 yellow | 12:05 | 12:00 · for the current hour |
The full timeline: 75 changes at orange or red
Sun 19 September
- Norte y nordeste de Mallorca, Sierra Tramontana: Raises the rain warning to orange: Tuesday 21, all day. Up to 40 mm in 1 h.
Mon 20 September
- Campo de Cartagena y Mazarrón, Vega del Segura: Raises the rain warning to orange: Tuesday 21, 00:00–08:00. Up to 30 mm in 1 h.
- Litoral de Barcelona, Litoral norte de Tarragona: Issues a orange rain warning: Tuesday 21, 00:00–04:00. Up to 40 mm in 1 h.
- Interior de Alicante, Litoral norte de Alicante: Raises the rain warning to orange: Tuesday 21, 00:00–04:00. Up to 40 mm in 1 h.
- Interior sur de Valencia, Litoral sur de Valencia: Issues a orange rain warning: Tuesday 21, 00:00–04:00. Up to 40 mm in 1 h.
- Litoral sur de Alicante: Raises the rain warning to orange: Tuesday 21, 00:00–06:00. Up to 40 mm in 1 h.
- Ibiza y Formentera: Raises the rain warning to orange: Tuesday 21, all day. Up to 70 mm in 1 h.
- Interior de Mallorca, Levante mallorquín, Sur de Mallorca: Raises the rain warning to orange: Tuesday 21, all day. Up to 50 mm in 1 h.
- Valle del Guadalentín, Lorca y Águilas: Raises the rain warning to orange: Tuesday 21, 00:00–08:00. Up to 30 mm in 1 h.
Tue 21 September
- Litoral norte de Castellón: Raises the rain warning to orange: Wednesday 22, 12:00–24:00. Up to 40 mm in 1 h.
- Litoral sur de Tarragona: Raises the rain warning to orange: Wednesday 22, 12:00–24:00. Up to 40 mm in 1 h.
- Prelitoral sur de Tarragona: Issues a orange rain warning: Wednesday 22, 12:00–24:00. Up to 40 mm in 1 h.
- Ibiza y Formentera, Interior de Mallorca, Levante mallorquín, Norte y nordeste de Mallorca, Sierra Tramontana, Sur de Mallorca: Raises the rain warning to orange: Wednesday 22, all day. Up to 40 mm in 1 h.
- Menorca: Raises the rain warning to orange: Tuesday 21, 15:00–24:00. Up to 60 mm in 1 h.
- Campiña sevillana: Raises the storms warning to orange: Tuesday 21, 17:00–19:00. Tormentas muy fuertes al este de la comarca, en el entorno de Écija.
- Litoral norte de Alicante, Litoral sur de Valencia: Raises the rain warning to orange: Wednesday 22, 00:00–12:00. Up to 40 mm in 1 h.
- Litoral norte de Castellón: Lowers the rain warning to yellow: Wednesday 22, all day. Up to 90 mm in 12 h.
- Litoral sur de Castellón: Raises the rain warning to orange: Wednesday 22, 12:00–24:00. Up to 40 mm in 1 h.
- Litoral sur de Tarragona: Lowers the rain warning to yellow: Wednesday 22, all day. Up to 90 mm in 12 h.
- Estrecho: Issues a orange rain warning: Wednesday 22, 00:00–12:00. Up to 40 mm in 1 h.
- Grazalema: Issues a orange rain warning: Wednesday 22, 00:00–12:00. Up to 30 mm in 1 h.
- Litoral norte de Alicante, Litoral sur de Valencia: Raises the rain warning to orange: Tuesday 21, 23:00–24:00. Up to 40 mm in 1 h.
- Litoral norte de Castellón, Litoral sur de Tarragona: Raises the rain warning to orange: Wednesday 22, 12:00–24:00. Up to 100 mm in 12 h.
- Sol y Guadalhorce: Issues a orange rain warning: Wednesday 22, 00:00–12:00. Up to 30 mm in 1 h.
- Litoral sur de Tarragona, Prelitoral sur de Tarragona: Raises the rain warning to orange: Thursday 23, 00:00–04:00. Up to 40 mm in 1 h.
Wed 22 September
- Ibiza y Formentera, Interior de Mallorca, Levante mallorquín, Menorca, Norte y nordeste de Mallorca, Sierra Tramontana, Sur de Mallorca: Raises the rain warning to orange: Thursday 23, 00:00–15:00. Up to 40 mm in 1 h.
- Menorca: Raises the rain warning to orange: Wednesday 22, 12:00–24:00. Up to 40 mm in 1 h.
- Andévalo y Condado, Aracena: Raises the rain warning to orange: Thursday 23, 00:00–21:00. Up to 30 mm in 1 h.
- Sierra norte de Sevilla: Issues a orange rain warning: Wednesday 22, 19:00–22:00. Up to 30 mm in 1 h.
- Sierra norte de Sevilla: Raises the storms warning to orange: Wednesday 22, 19:00–22:00.
- Sierra y Pedroches: Issues a orange rain warning: Wednesday 22, 19:00–22:00. Up to 40 mm in 1 h.
- Sierra y Pedroches: Raises the storms warning to orange: Wednesday 22, 19:00–22:00.
- Litoral sur de Tarragona, Prelitoral sur de Tarragona: Lowers the rain warning to yellow: Thursday 23, 00:00–14:00. Up to 30 mm in 1 h.
- Barros y Serena, Sur de Badajoz, Vegas del Guadiana: Raises the rain warning to orange: Thursday 23, 00:00–21:00. Up to 30 mm in 1 h.
- Litoral de Huelva: Raises the rain warning to orange: Thursday 23, 00:00–21:00. Up to 40 mm in 1 h.
- Sierra norte de Sevilla: Raises the rain warning to orange: Thursday 23, 12:00–24:00. Up to 30 mm in 1 h.
- Litoral sur de Valencia: Raises the rain warning to orange: Thursday 23, 00:00–04:00. Up to 50 mm in 1 h.
Thu 23 September
- Interior sur de Valencia: Raises the rain warning to orange: Thursday 23, 01:00–04:00. Up to 50 mm in 1 h.
- Campiña sevillana: Raises the rain warning to orange: Thursday 23, 12:00–24:00. Up to 30 mm in 1 h.
- Ibiza y Formentera, Interior de Mallorca, Levante mallorquín, Menorca, Norte y nordeste de Mallorca, Sierra Tramontana, Sur de Mallorca: Extends the orange rain warning: now until 17:00 on Thursday 23. Up to 40 mm in 1 h.
- Litoral de Huelva: Raises the storms warning to orange: Thursday 23, 12:00–21:00.
- Litoral de Huelva: Raises the rain warning to red: Thursday 23, 13:00–14:00. Up to 60 mm in 1 h.
- Litoral de Huelva: Lowers the rain warning to orange: Thursday 23, 13:00–21:00. Up to 40 mm in 1 h.
AEMET's issue times, in mainland Spain time (Canary Islands in island time). Notice is the time from issue to the first hour the warning covered; a warning issued “for the current hour” runs from the hour it is published.
What this says and what it doesn't
A warning is an AEMET forecast, not a measurement or a damage report: it says a threshold is expected to be exceeded in a zone. A warning is not damage; a zone is not a building.
A zone-day is one warning zone with a warning on one day. Ten zones at orange on the same day make ten zone-days. A day with several warnings in one zone counts once, at its highest level.
Each zone has its own thresholds, so an orange heat warning in Asturias doesn't mean the same temperature as in Córdoba. More in how warnings work.
To cite: “Climaviso, from AEMET warnings”.
Source: official AEMET warnings, collected by Climaviso since June 2018.
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