Graphic: Aemet Canarias.
Updated 17 May: Aemet has updated its yellow alert for high winds and costeros, which now continues to Friday, and the high winds forecast is extended to the medianías as well as the coast.
Updated 16 May: With the calima now being felt here, Aemet have issued a yellow alert for the costeros that its arrival will bring with it over the next several days. The costeros will involve rough seas and treacherous waves with near gale Force 7 winds around the coast. The alert advises the public to take great care, indeed to stay away from the coast where possible. Please let’s not have any fatalities to report on the Drowning Post.
Updated 11 May: It could get a bit warmer next week, quite a bit warmer, meteorologists say, as a calima starts to arrive on Sunday. The areas most affected are likely to be the south and west, especially in the medianías, with the trade winds giving a bit more protection to the north and east. Please do have a look HERE, too, for official advice on staying safe in heatwaves.
Updated 2 May: And yet more unsummery weather is coming our way with a stormy front passing through the Canaries on Thursday and Friday, Aemet says. The cloud build-up should start tomorrow, and the winds should pick up too, coming from the north west.
Updated 29 April: Emergency services have repeated their request for the public to take suitable care in adverse weather conditions after a 48-year-old British woman suffered a cardiac arrest and nearly drowned while diving off the Playa de Radazul, El Rosario, just before 11.30 this morning. She was pulled out of the water by fellow divers, and then transferred by emergency services to Candelaria Hospital where her condition is said to be serious.
Cardiac arrest is a symptom of cold water shock, a cause of many drownings here because the water is always technically “cold”. When the water is anything but calm, moreover, the effect is heightened because of the added stress put on the body by the increased effort required. Please see HERE for further information.
Emergency services pleaded only yesterday for sensible behaviour from the public while adverse weather condition persist, asking them to avoid the coast where the seas are rough and to postpone walks through terrain that would be strenuous at the best of times, let alone when rainwaters can make the ground untenable, or even sweep hikers off their feet.
Updated 28 April: The torrential rains with stormy conditions have affected various parts of Tenerife overnight and are set to continue to do so for a few hours yet. The authorities plead for sensible behaviour from the public, asking them to avoid the coast where the seas are rough and to postpone walks through terrain that would be strenuous at the best of times, let alone when rainwaters can make the ground untenable, or even sweep hikers off their feet. Today, emergency services had to dispatch a helicopter to rescue a 70-year-old woman who sustained minor injuries while descending Masca barranco, a walk that could hardly be described as sensible in such conditions.
Updated 27 April: The Canarian Government has issued a pre-alert for rains in Tenerife overnight. The pre-alert runs from now (5.45pm) until 10am tomorrow morning, and anticipates downpours with stormy conditions in parts of Tenerife. Aemet itself thinks that the south and east of Tenerife is likely to be most affected.
Updated 26 April: The first rains reached La Palma this morning, and got to La Gomera this afternoon. Now, this evening, the first wet weather has arrived at Tenerife, with at least a couple of heavy showers in the west. Aemet says that this depression (the dark part of the video below) is approaching us and will bring an instability that’s forecast to last to and possibly through the weekend, some of it quite stormy.
Vapor de agua. Zona oscura (bajas presiones) se acerca a Canarias. Aportará inestabilidad. Posibilidad de tormentas cerca occidentales pic.twitter.com/DnNQ46zEvY
— AEMET_Canarias (@AEMET_Canarias) 26 April 2017
Updated 24 April: It might have seemed like summer had arrived early a week or so ago, but the calima which made temperatures soar has been replaced by a rather dull spell over the past several days. Meteorologists think, however, that a system coming in from the Atlantic could bring some wet weather from Thursday. It won’t be cold, at least, but wet and warm weather will make it quite muggy – very muggy, some are saying. There will be more updates over the next few days, I’m sure.
Updated 17 April: It’s been a torrid couple of days with high winds in the hills blowing in a calima sending temperatures way above the norm for this time of year. Meteorologists say, however, that from tomorrow we should notice a significant reduction taking values down 5º or so, and getting back to the mid to high 20s from Wednesday with the return of northerly breezes.
Meanwhile, please be aware of the official advice for staying safe in these hot spells, which I’ve outlined in English HERE, not least because humidity can drop to dangerous levels when wind is blowing in desert air from the east. Children, pregnant women, the elderly and those with respiratory conditions can suffer disproportionately so please do become familiar with the official advice, ensure there’s enough of any medication needed, and seek medical advice immediately in the event of feeling unwell.
Updated 19 March: The unsettled spell looks as though the worst is over, with Güímar and Los Realejos in particular yesterday getting the heaviest downpours. The observatory at Izaña woke this morning to a snowy scene, and the Cabildo’s Roads Department says that the TF-24 and TF-21 access roads (from the north) to Teide are closed because of snow and ice on the carriageway, and the TF-31 (Martiánez) access to Puerto de la Cruz is also closed.
Updated 18 March: The rain has arrived in parts of the north as forecast, with more to come and heavier than anticipated. Also as forecast, it arrives as snow about 2,200m. This video of snow on Teide this morning is from Volcano Teide, the official National Park tourism organization.
— Volcano Teide (@VolcanoTeide) 18 March 2017
Updated 4pm: The unsettled spell that has been forecast for a week has now caused Aemet to issue a yellow alert, and the Canarian Government to issue a prealert, for rain throughout the Canaries from 9am tomorrow, Saturday 18 March. Rain is not expected to be particularly heavy but some areas in Tenerife could experience downpours.
Updated 17 March: As forecast, the spell of unstable weather has arrived, and has brought with it some snow on Teide above 2,000m. Thank goodness the cable car breakdown happened when it did because 24 hours later people would have been stranded in very cold conditions indeed! Drivers in the area are urged to take extra care, and some of the access roads to Teide, through El Portillo and Arafo, for example, have been closed because of snow and ice.
Updated 14 March: The Canarian Government has lifted its alerts for high winds and wild seas around the western islands including Tenerife. Aemet says that after last week’s calima, and the forceful return of the alisios (trade winds) over the last couple of days bringing strong winds in parts and rough waves, today and tomorrow are days of transition before an unstable weather system arrives on Thursday. This will bring rain to some areas, though the likely extent and severity is still under assessment. No doubt there will be more information in coming hours and days. What is clear, however, is that the system, like the alisios, is coming from the north, so that will be the first to see any effects.
Updated 3pm: The Canarian Government has issued its own alert now for gales and wild seas tomorrow. The Government asks the public to take the utmost precautions to stay safe, and for people to familiarise themselves with the recommended safety advice, which I’ve outlined in English HERE.
Meanwhile, double-check any planned trips or events to make sure they’re still going ahead over the next day or so because things sometimes are postponed, cancelled or closed with these alerts. For example, the Teleférico is often closed temporarily in high winds, and the Teno access has been closed while this alert is in place, and of course, please take extra special care in the sea. One thing that has not been cancelled, however, is school: classes continue until specific notice from the Education Department.
Updated 12 March: As expected, temperatures have dropped a few degrees, enough to be noticeable, and will continue to fall over coming hours. As also expected, however, the wind is the main factor, with forecast gusts of up to 90km/h seeing Aemet raise alerts, rising to orange in Tenerife tomorrow, for winds and costeros (wild waves). The conditions are expected to last until Tuesday.
Updated 10 March: Today should be the hottest day of this calima, which has thankfully not been quite as thick with dust-laden air as originally expected. These abnormally high Spring temperatures should begin to reduce from tomorrow, however, and by Sunday, temperatures could have dropped by as much as 10º, meteorologists say.
Updated 9 March: The full effects of this first calima of 2017 will start to be felt today, with the west and north in particular feeling the wind, but everywhere experiencing the heat. Today and tomorrow seem set to be the hottest days, with the heatwave starting to disperse on Sunday.
Aemet has raised a yellow alert for calima, and the Canarian Government has issued a prealert, both being intended to raise awareness of the problems this weather phenomenon can cause. Please see HERE for staying safe in heatwaves, with calimas being a particular problem for those with respiratory conditions, and HERE for staying safe in the sea because with the calima winds, the sea becomes rougher than usual, at a time when the heat tempts people more than ever to go in to cool off.
Original post 7 March: The first real warm spell of 2017 is about to be upon us, with meteorologists forecasting some high winds arriving today bringing a light calima from the east along with a considerable rise in temperatures. The increasing warmth will be most notable in the medianías and at altitude, and especially in the south and south-east of the island, where 30º or so is possible. One of the main features over the next 24 hours or so, however, is likely to be the wind, but the warm spell is set to be with us until at least Thursday evening.