Unsettled Saturday with Storm Therese
Storm Therese continues to drive unstable weather across the archipelago this Saturday, 21 March. The main features are persistent, locally heavy rainfall, a risk of thunderstorms, and potentially damaging wind gusts. The Atlantic is rough with a significant ocean swell.
General Outlook
Cloudy intervals will dominate, tending to overcast skies on the more mountainous islands, especially southern and western slopes. Here, rain will be persistent and occasionally heavy. Isolated thunderstorms and small hail cannot be ruled out. In other areas, showers will be less likely. Temperatures see little change overall. A moderate to strong southwesterly wind will bring probable very strong gusts on peaks, southeastern and northwestern slopes, and mid-altitude leeward areas, potentially exceeding 90-100 km/h locally.
At sea, expect a southwesterly wind of force 7 (50-61 km/h). A combined west or northwesterly swell will bring waves of 3-4 metres, except along the west coasts of La Palma and El Hierro where they could surpass 4 metres.
Island-by-Island Forecast
Tenerife
Showers, potentially heavy, especially on southern, western, and inland slopes. Thunderstorms are likely. A moderate southwesterly wind with gusts potentially reaching 120 km/h on the peaks. Temperatures rising slightly inland.
Gran Canaria
Locally heavy showers during the morning. Conditions will calm but intensify again by night. A moderate to strong southwesterly wind with very strong gusts in the southeast, northwest, and northern mid-altitude areas. A maximum of 22°C is forecast for the capital.
Lanzarote
Rainfall is expected around midday. Cloudy intervals are forecast for the morning and night. A predominantly strong southwesterly wind with very strong gusts.
Fuerteventura
Cloudy intervals. Occasional weak showers are probable, more likely in the north. A southwesterly wind with very strong gusts exceeding 70 km/h inland.
La Palma
A new line of instability will bring persistent rain, particularly on southern and western slopes. Some thunderstorms could occur in the morning and afternoon. A moderate southwesterly wind with gusts over 100 km/h on the peaks during the morning.
La Gomera
Heavy precipitation, with a chance of thunderstorms overnight. Very strong wind gusts that could exceed 80 km/h. Maximum coastal temperatures between 17°C and 22°C.
El Hierro
Cloudy intervals with locally heavy showers; thunderstorms cannot be ruled out. Very strong wind gusts and stable temperatures.
La Graciosa
Mostly clear skies, though an isolated shower in the afternoon is possible. A moderate southwesterly wind. Temperatures ranging from 16°C to 22°C.
