What does Bruna mean for visitors and residents on Gran Canaria?
The city council advises people to cancel excursions and camping until conditions return to normal. It also asks drivers to stay off the roads where possible.
Anyone who must drive should go slower and use public transport where they can. Nobody has yet confirmed closed parks, cancelled events or changed timetables and school hours.
For Sunday 8 November, the state weather service AEMET has issued an orange rain warning. It runs from 12:00 to 23:59 for the summits and the east, south and west slopes.
So anyone living or holidaying in the south of the island is inside the named warning area. The details do not say whether the warning covers the coastal towns themselves.
When does each warning apply in Las Palmas de Gran Canaria?
The wind warning starts on Saturday at 12:00. The coastal warning follows at 18:00 because of rougher seas.
The rain warning takes effect at 21:00. At the same hour the city declares a pre-alert (prealerta) for thunderstorms and flood risk.
Both come on top of the precautionary deployment for Bruna. The regional government gives similar times.
Its rain warning for Gran Canaria also starts at 21:00, and its wind warning for the north and north-west of the island at 12:00. The sea warning for the north and west coasts applies from 18:00.
According to the Canary Islands government, a pre-alert is a precautionary measure. It does not mean every municipality will see flooding.
How strong will the rain, wind and sea be?
For Gran Canaria, the Canary Islands government expects about 25 millimetres of rain in an hour. By comparison, La Palma could see 30 millimetres or more per hour.
AEMET also has a yellow warning for 20 to 25 millimetres per hour. A yellow thunderstorm warning covers all eight islands and reaches Gran Canaria on Sunday.
On the summits, gusts above 60 kilometres per hour are possible on Saturday. On Sunday, the Canary Islands government says they may exceed 90 kilometres per hour in the summit and north-west zones.
AEMET also reports a yellow wind warning with up to 70 kilometres per hour, valid all Sunday. From Monday 9 November, the Canary Islands government expects swells of three to four metres.
Waves washing over open north and west coasts are most likely in the two to three hours around high tide. The critical windows are 00:00 to 00:25 and 12:15 to 12:40 on Sunday 8 November, and 00:30 to 01:00 and 12:50 to 13:15 on Monday 9 November.
On Tuesday 10 November the windows are 01:05 to 01:30 and 13:25 to 13:50. On Wednesday 11 November they are 01:40 to 02:05 and 14:00 to 14:25.
What exactly do the authorities advise?
At home, keep doors and windows shut so draughts do not break panes. Bring flowerpots and loose items in from balconies, terraces and roof terraces.
Outside, the city council warns of gardens, areas under trees, walls, scaffolding and advertising boards. Power pylons, high-voltage towers and construction cranes are also a risk in strong gusts.
Vans, lorries and vehicles with trailers are prone to crosswinds, the city says. Motorbikes are just as exposed, and riders must watch for sudden gusts.
On the coast, do not stand on pier ends or breakwaters, even for photos or videos. The authorities advise against swimming under a red flag, in heavy surf or without lifeguards.
The Canary Islands government also advises against walking through barrancos (ravines) or parking in hollows. Garages, cellars and lifts are off limits when flooding is possible.
Use 112 only for emergencies; call 012 for information. If you see someone fall into the water, call 112 at once and throw a lifebuoy without putting yourself at risk.
How long will the situation last, and who decides?
Bruna has affected the Canary Islands since Saturday 7 November with a cold front moving from west to east. A disturbance of tropical origin is expected to bring further instability the following week.
Forecasts differ on how long it will last. The episode could run until at least Tuesday 10 November.
Another assessment expects a pause on Monday and Tuesday. New rain and wind would then arrive on Wednesday 11 November.
The Canary Islands government, not the municipality, sets the levels of pre-alert, alert and maximum alert. They are separate from AEMET's yellow, orange and red warnings.
The city adds its own measures through the PEMULPA plan. The Dirección General de Emergencias (regional emergency directorate) says it will adjust its declaration if needed.