Update 21 March: The latest development in the forecast predicts that the weather system across the Canaries will now be centred over Tenerife, and should remain with us until Monday, when it should start to ease off. Rain is expected today throughout the island, but particularly heavy in the north east of Tenerife, and worsening tomorrow. Aemet has raised a yellow alert for locally heavy squalls throughout Sunday from 6am. As of 9am this morning, Saturday, it was -3º near the observatory!
Update 20 March: Today will be the worst day of the weather system, forecasters say, and none of it has given rise to any official alerts. Rain is mainly in the north and at altitude, and with it falling as snow above 2,000m, the caldera is white, and a stretch of the TF24 La Esperanza road is closed through ice on the carriageway. A northeasterly wind has been fairly strong at altitude, reaching around 30 km/h, though again not enough to trigger an alert. Conditions are forecast to improve from tomorrow, though remaining unsettled, with winds of up to 40 km/h mainly at altitude.
Update 19 March: The forecasts have developed, as was always likely. It has become colder over the last couple of days, but temperatures are expected to drop sharply again tomorrow and remain low over the weekend. The rain which was forecast to fall mainly in the north is now said to be likely to affect south Tenerife as well, and it could get quite blustery, with some quite high winds at times.
Original post 17 March: The forecast is still a bit unclear as to quite how wet it’s going to be towards the end of this week but one thing is very clear. From tomorrow, we’re in for a cold spell from the north, a last blast of winter before Spring starts properly, which will last at least for the rest of this week. The drop in temperatures should be able to be felt from tomorrow, and rain will come in its wake, probably from Thursday or Friday. At the moment, nothing torrential is forecast, and it’s expected to affect the north more than anywhere, but as always this can develop. The sure thing is that the beautiful weather we’ve had since the calima a week or so ago is coming to an end for the moment.