Santa Cruz de Tenerife · 161.108 inhabitants · 31.332 buildings analysed one by one

San Cristóbal de La LagunaClimate risk in its neighbourhoods, streets and rivers, today and in 2050

We have scored the climate risk of the 31.332 buildings in San Cristóbal de La Laguna using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. The clearest change comes at night: from 31 to 72 tropical nights a year by 2050.

31→72tropical nights a year in a typical building, today and by 2050
83%of homes at high or very high wind risk by 2050
2.350homes in the official flood zone (500 years)
At a glance

Where the risk lies by 2050

LowMediumHighVery highRivers and streams

Level of the highest hazard in each 250 m area by 2050: flooding, heat, wildfire, wind or ground movement.

Tropical nights a year in a typical building

San Cristóbal de La Laguna compared with Spain

  • Tropical nights a year, 2050: 63 nights
    higher than 87 % of municipalities
  • Average summer maximum, 2050: 24,3 °C
    lower than 97 % of municipalities
  • Flood-prone area (100-year): 0,0%
    lower than 80 % of municipalities
  • Area burnt 2016-2026: 0,2%
    higher than 77 % of municipalities
  • Water stress 2050 (0-5): 2,8
    lower than 84 % of municipalities

Position among the 8.217 municipalities: further right means more risk. These are figures for the municipality as a whole, the same for everyone; they may differ from those for the typical building. Compare with others →

What stands out

What we found in San Cristóbal de La Laguna

It comes from matching each building with its neighbourhood, its street, the nearest watercourse and its surroundings.

1

8.525 homes at very high wildfire risk

7.220 buildings

These are 7.220 buildings right next to vegetation that can burn. Of these, 26 are blocks of flats with 1.024 homes, where evacuation is harder.

  • Avenida Club Náutico de Bajamar: 271
  • Calle Fragua: 160
  • Carretera de La Laguna a Punta del Hidalgo: 86
  • Calle la Brida: 69

Proximity to woodland and to burnt areas (ESA WorldCover, EFFIS). It does not measure the state of the vegetation or any firebreaks.

2

2.350 homes in a flood zone

2.350 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 1.725 of them are in the 100-year area. Next to Barranco de Gonzaliánez, 785 homes are inside the flood zone, less than 100 m from the watercourse.

According to the Ministry’s studies, this is an annual probability of 0,2 % (500 years) or 1 % (100 years), not “once every 500 years”: it can happen two years in a row. Small gullies are not always mapped.

3

From 31 to 72 tropical nights a year

31→72 nights

In a typical building in San Cristóbal de La Laguna, nights when the temperature stays at or above 20 °C would rise from 31 a year (1991-2020) to about 72 by 2050. For this reason, 64 % of homes would be at a high or very high level.

Median of the buildings. Intermediate-to-high emissions scenario (SSP3-7.0).

4

Where there are fewer trees, 4,6 °C hotter

4,6 °C

Around homes with less than 2 % tree cover, the surface in summer is 1,6 °C above the median for San Cristóbal de La Laguna; with more than 40 % tree cover, 3,0 °C below. 17.232 homes are in surroundings with almost no trees.

Ground surface temperature (Landsat), not air temperature. More trees usually go with less asphalt and lower density: this is a correlation, not a measure of the effect of planting trees.

5

30 schools in heat islands

30 of 58

Schools whose surroundings are at least 1 °C hotter than the municipal median in summer. They are the first candidates for shade and tree-lined playgrounds.

Ground surface temperature (Landsat) around the building closest to the OpenStreetMap point.

Six hazards

How many homes are at high risk, today and in 2050

The 70.927 homes in San Cristóbal de La Laguna by the level of their building. Tap a hazard to see it on the map.

LowMediumHighVery high
What can be done

For the town council and for residents

For the town council and its technical staff

  • Climate shelters, and late-afternoon and evening opening hours at libraries and community centres in the areas with the most tropical nights.
  • Shade and trees in the playgrounds of the 30 schools with the hottest surroundings.
  • Review with the river basin authority the watercourses with no official mapping that run next to homes, and keep them clear.
  • Firebreaks and evacuation routes in the streets that border woodland.
  • Emergency self-protection plans in the schools, care homes and health centres that are in a flood zone.

For residents

  • Air your home in the early hours, shade west-facing walls from the sun and ask about grants to insulate the roof.
  • If you live on a ground floor or have a garage next to a watercourse, have a plan: where to go upstairs, what to switch off and how to hear about warnings.
  • Keep the strip around your house clear of dry vegetation and know both ways out of your street.
  • Look up your building: the free report gives its level for each hazard, and the Climate Note gives the full detail.

Look up your building