ClimavisoRain across much of Spain, 20–21 September 2024
20 September 2024 to 21 September 2024. Updated 26 October 2026.
Over 2 days, 27 of Spain's 182 warning zones had an orange or red warning for rain: 31 zone-days at orange or red, 1 of them red. The day with the most zones at orange or red was 21 September, with 21 zones.
21 September was the day with the most people in zones under an orange or red warning: 5.9 million people live there (INE municipal register, 2025).
How it compares
- It is number 94 of 119 episodes since June 2018 by zone-days at orange or red.
- Among the 35 rain episodes, it is number 27.
Day by day
| Day | Red | Orange | Yellow | Orange or red warnings for |
|---|---|---|---|---|
| Fri 20 September | — | 10 | 75 | rain |
| Sat 21 September | 1 | 20 | 72 | rain, storms |
Zones with a warning each day, at their highest level that day.
The zones
And 99 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: 127.2 l/m² of rain in 24 h at Irurtzun (Centro de Navarra) on 21 September.
| Zone | Most rain in 24 h |
|---|---|
| Centro de Navarra | 127.2 l/m² Irurtzun · 21 September |
| Pirineo oscense | 84.2 l/m² Torla-Ordesa, el Cebollar · 21 September |
| Suroccidental asturiana | 75.2 l/m² Tineo, Soutu · 20 September |
| Litoral norte de Tarragona | 71.3 l/m² Reus (centre Lectura) · 20 September |
| Interior sur de Castellón | 64.4 l/m² Atzeneta del Maestrat · 21 September |
| Menorca | 49.2 l/m² Menorca, Aeropuerto · 21 September |
| Litoral norte de Valencia | 48.6 l/m² Sagunt/sagunto · 21 September |
| Ibérica de Soria | 43.2 l/m² Ólvega · 21 September |
| Bizkaia interior | 41.0 l/m² Orozko, Ibarra · 21 September |
| Vertiente cantábrica de Navarra | 39.8 l/m² Baztan, Irurita · 21 September |
| Litoral sur de Castellón | 33.8 l/m² Castelló - Almassora · 21 September |
| Meseta de Soria | 27.4 l/m² Burgo de Osma · 21 September |
| Interior norte de Castellón | 27.0 l/m² Castellfort · 21 September |
| Norte y nordeste de Mallorca | 25.4 l/m² Artà · 21 September |
| Levante mallorquín | 23.8 l/m² Santanyí · 21 September |
| Gipuzkoa litoral | 21.6 l/m² Irun · 21 September |
| Sur de Mallorca | 20.5 l/m² Cabrera, Parque Nacional de Cabrera · 21 September |
| Cuenca del Nervión | 18.2 l/m² Aramaio, Etxaguen · 21 September |
| Gipuzkoa interior | 17.0 l/m² Elgeta · 21 September |
| Interior de Mallorca | 14.8 l/m² Petra · 21 September |
And 5 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 2 days earlier.
| Zone | Day | First warning | Red issued | For · notice |
|---|---|---|---|---|
| Centro de Navarra | Sat 21 | Thu 19 Sep, 11:30 yellow | 21:47 | 21:00 · for the current hour |
The full timeline: 58 changes at orange or red
Wed 18 September
- Litoral norte de Castellón, Litoral norte de Tarragona, Litoral sur de Castellón, Litoral sur de Tarragona: Raises the rain warning to orange: Friday 20, 00:00–12:00. Up to 40 mm in 1 h.
Thu 19 September
- Litoral norte de Tarragona, Litoral sur de Tarragona: Extends the orange rain warning: now until 24:00 on Friday 20. Up to 40 mm in 1 h.
Fri 20 September
- Ibiza y Formentera: Issues a orange rain warning: Saturday 21, 12:00–20:00. Up to 50 mm in 1 h.
- Ibiza y Formentera: Issues a orange storms warning: Saturday 21, 12:00–20:00. Strong gusts.
- Interior de Mallorca, Levante mallorquín, Norte y nordeste de Mallorca, Sierra Tramontana, Sur de Mallorca: Raises the rain warning to orange: Saturday 21, 16:00–24:00. Up to 50 mm in 1 h.
- Interior de Mallorca, Levante mallorquín, Norte y nordeste de Mallorca, Sierra Tramontana, Sur de Mallorca: Raises the storms warning to orange: Saturday 21, 16:00–24:00. Strong gusts.
- Menorca: Raises the rain warning to orange: Saturday 21, 19:00–24:00. Up to 50 mm in 1 h.
- Menorca: Raises the storms warning to orange: Saturday 21, 19:00–24:00. Strong gusts.
- Centro de Lugo, Interior de Pontevedra, Montaña de Lugo: Raises the rain warning to orange: Friday 20, 14:00–22:00. Up to 30 mm in 1 h.
- Bizkaia interior, Cuenca del Nervión: Raises the rain warning to orange: Friday 20, 14:00–24:00. Up to 30 mm in 1 h.
- Litoral norte de Castellón, Litoral sur de Castellón: Raises the rain warning to orange: Saturday 21, all day. Up to 50 mm in 1 h.
- Litoral norte de Castellón, Litoral norte de Valencia, Litoral sur de Castellón: Issues a orange storms warning: Saturday 21, all day.
- Litoral norte de Valencia: Issues a orange rain warning: Saturday 21, all day. Up to 40 mm in 1 h.
- Litoral sur de Tarragona: Raises the rain warning to orange: Saturday 21, all day. Up to 50 mm in 1 h.
- Pirineo oscense: Raises the rain warning to orange: Saturday 21, all day. Up to 80 mm in 12 h.
- Litoral norte de Castellón, Litoral norte de Valencia, Litoral sur de Castellón: Lowers the storms warning to yellow: Saturday 21, all day.
- Suroccidental asturiana: Raises the rain warning to orange: Friday 20, 19:00–22:00. Up to 54 mm in 1 h.
- Bizkaia interior, Cuenca del Nervión: Lowers the rain warning to yellow: Friday 20, 22:00–24:00. Up to 25 mm in 1 h.
- Gipuzkoa interior, Gipuzkoa litoral, Vertiente cantábrica de Navarra: Raises the rain warning to orange: Saturday 21, 12:00–24:00. Up to 30 mm in 1 h.
- Interior norte de Castellón, Interior sur de Castellón: Raises the rain warning to orange: Saturday 21, 00:00–18:00. Up to 40 mm in 1 h.
- Litoral norte de Tarragona: Raises the rain warning to orange: Saturday 21, 00:00–16:00. Up to 100 mm in 12 h.
- Litoral norte de Tarragona: Extends the orange rain warning: now until 18:00 on Saturday 21. Up to 100 mm in 12 h.
Sat 21 September
- Vertiente cantábrica de Navarra: Lowers the rain warning to yellow: Saturday 21, 08:00–24:00. Up to 50 mm in 12 h.
- Pirineo oscense: Lowers the rain warning to yellow: Saturday 21, 12:00–24:00. Up to 15 mm in 1 h.
- Gipuzkoa interior, Gipuzkoa litoral: Lowers the rain warning to yellow: Saturday 21, 12:00–24:00. Up to 40 mm in 12 h.
- Ibérica de Soria, Meseta de Soria: Raises the rain warning to orange: Saturday 21, 18:00–22:00. Up to 40 mm in 1 h.
- Interior de Mallorca, Levante mallorquín: Pushes the orange rain warning back: now from 21:00 on Saturday 21. Up to 50 mm in 1 h.
- Interior de Mallorca, Levante mallorquín: Pushes the orange storms warning back: now from 21:00 on Saturday 21. Strong gusts.
- Centro de Navarra: Raises the rain warning to orange: Saturday 21, 21:00–24:00. Up to 49 mm in 1 h.
- Centro de Navarra: Raises the rain warning to red: Saturday 21, 22:00–24:00. Up to 140 mm in 12 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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