What changes for visitors, and where and when?
The Canarian government keeps La Palma, El Hierro and La Gomera on Alerta for rain. Tenerife and Gran Canaria stay on Prealerta, according to the Dirección General de Emergencias (the Canaries' emergency directorate), as reported by Diario de Avisos.
Prealerta also applies for thunderstorms on the western islands and on Gran Canaria. The state weather agency AEMET says the instability flares up again on the evening of 2 November and overnight into Tuesday 3 November.
Forecasters expect very heavy local showers, thunderstorms, hail and strong gusts, mainly in the west. The report gives no rainfall in litres per square metre and no wind speeds.
The eastern slope of La Palma needs particular attention, as heavy rain may fall there again. On Tenerife the authority also expects very strong showers overnight, but in smaller, more local areas.
On Gran Canaria it expects lighter rain. The report does not say which southern resorts are affected, because it deals only with whole islands and parts of islands.
What do the authorities advise visitors and residents to do?
The Canarian government advises people to avoid road journeys where possible. Anyone who must drive should use main roads, slow down and leave more space, the report says.
Drivers should watch for water on the road and check their brakes. Barrancos (ravines), low-lying ground and places that can flood are unsafe to cross or park in.
The warning expressly covers barrancos that are normally dry. The government says they can flood suddenly and the water can rise fast.
In a thunderstorm, keep away from open ground, high spots and lone trees. Stay clear of metal structures and anything that can conduct electricity.
Secure doors, windows and anything the wind could move. The government advises against sea activities and exposed coasts while the situation lasts, and in an emergency people should call 112.
What has happened so far?
The CECOES 112 control centre has logged around a hundred call-outs since the storm began, on Tenerife, La Palma, El Hierro and La Gomera. Most involved power cuts, water in homes and shops, overflowing drains and rocks on roads.
On La Palma the power failed completely on the morning of Monday 2 November. Supply was back by 10:30.
Because of the blackout, the government activated the PLATECA plan, and the PEFMA plan because of the rain. Control rooms were reinforced so that they can handle more than the usual incidents.
The report names no injuries and gives no damage total. Our research also found nothing on schools, road closures, ferries or flights.
What do Prealerta and Alerta mean?
The levels come from the PEFMA plan, the Canaries' 2014 civil protection plan for severe weather. Media list the levels as Prealerta, Alerta, Alerta máxima and Emergencia, which makes Alerta the second level.
Under PEFMA, a Prealerta does not trigger a warning to the public. The government still publishes it early, elDiario.es reports, so that the authorities can prepare.
Such notices are becoming more frequent. In 2024 the regional statistics counted 22 alerts and Prealertas, 18 of them Prealertas, elDiario.es reports, the highest figure in that series.
The newspaper cites global warming, earlier assessment and dangerous coastal incidents in which three people drowned. So the weather alone does not fully explain the rise.
Similar notices came earlier in the autumn, such as the Prealerta for five islands on 9 October, as RTVC reported. Between 20 and 22 October, RTVC and Diario de Avisos reported Alertas for La Palma and El Hierro.
Who pays for storm damage?
The Consorcio de Compensación de Seguros (CCS, the state insurance compensation body) pays for extraordinary risks, including extraordinary floods. According to dsca.gob.es, this normally requires a valid policy and the surcharge to have been paid.
The CCS does not cover ordinary weather damage. It is not documented whether hail damage to a car or home falls under a standard policy, so ask your insurer.
No grants from the government or the Cabildos (island governments) for damage from this storm are known. Our research found nothing on this.
What happens next?
The forecast says the strongest phase should ease from 06:00 on Tuesday 3 November. The details date from the evening of 2 November, and later changes to the warning levels are not confirmed.
On Wednesday 4 November, a new phase of instability follows between midday and 19:00. It mainly hits the interior of the mountainous islands, where showers and thunderstorms may later move towards the coast.
The authority expects this phase to be weaker than the events of recent days. Anyone travelling inland should still keep those hours flexible.
AEMET's colour warnings (yellow, orange, red) are a separate layer alongside the Canarian government's levels. Current information is on aemet.es and on the Alertas pages of the Gobierno de Canarias.