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Products Nuvola CyL

Nuvola CyL

The weather for all 2,248 municipalities of Castilla y León in one website, with official data and updated automatically.

Open Nuvola CyL

The Nuvola CyL home page: the current weather in Valladolid, the search box for the 2,248 municipalities and the map of Castilla y León.
The Nuvola CyL home page. Background photo: Nicolás Pérez, CC BY-SA 3.0. This screenshot is published under the same licence.

The problem

In Castilla y León, the weather that matters isn't just whether it rains: it's also the warnings, the state of the reservoirs, roads with snow, soil moisture for farming and wildfire danger. Each is published by a different body, in a different format and on its own schedule.

Nuvola CyL brings it together by municipality, each figure with its source, and keeps itself up to date.

At a glance

How it's madeThe data comes from AEMET, Open-Meteo and Copernicus, MITECO, the DGT and other public sources. Each source updates on its own schedule; warnings are assigned by each municipality's official zone; data that can't be compared isn't mixed; and a daily check watches the website. What you see: the weather for each municipality, warnings and radar, reservoirs and roads, and farming information.WHERE THE DATA COMES FROMAEMETOfficial forecast, warnings and radarOpen-Meteo and CopernicusModels, soil, air and pollenMITECO and DGTReservoirs and roadsINE, Wikidata and IDECyLMunicipalities, passes and districtsWHAT WE DO WITH ITEach source on its scheduleFrom minutes to a weekWarnings by official zoneFollowing the Meteoalerta tableNo mixing of sourcesForecast and reanalysis kept apartDaily monitoringAn alert if something failsWHAT YOU SEEYour municipality's weatherAll 2,248 in Castilla y LeónWarnings and radarUp to dateReservoirs and roadsStorage, snow and passesFarming informationSoil, rain and frostHow it's madeThe data comes from AEMET, Open-Meteo and Copernicus, MITECO, the DGT and other public sources. Each source updates on its own schedule; warnings are assigned by each municipality's official zone; data that can't be compared isn't mixed; and a daily check watches the website. What you see: the weather for each municipality, warnings and radar, reservoirs and roads, and farming information.WHERE THE DATA COMES FROMAEMETOfficial forecast, warnings and radarOpen-Meteo and CopernicusModels, soil, air and pollenMITECO and DGTReservoirs and roadsINE, Wikidata and IDECyLMunicipalities, passes and districtsWHAT WE DO WITH ITEach source on its scheduleFrom minutes to a weekWarnings by official zoneFollowing the Meteoalerta tableNo mixing of sourcesForecast and reanalysis kept apartDaily monitoringAn alert if something failsWHAT YOU SEEYour municipality's weatherAll 2,248 in Castilla y LeónWarnings and radarUp to dateReservoirs and roadsStorage, snow and passesFarming informationSoil, rain and frost

In figures

  • 2,248 municipalities in Castilla y León, each with its own page.
  • 35 reservoirs in the Duero basin, from MITECO's weekly hydrological bulletin.
  • 53 mountain passes with roads, with DGT incidents for snow, ice, snow chains or closures.

Where the data comes from

AEMET
Spain's State Meteorological Agency: the official forecast for each municipality, Meteoalerta warnings, regional radar and wildfire danger.
Open-Meteo and Copernicus
Weather model forecasts, expected rainfall, air quality and pollen, and soil moisture compared with other years (Copernicus ERA5 and ERA5-Land reanalysis).
MITECO
The Ministry for the Ecological Transition's weekly hydrological bulletin: storage in the 35 Duero reservoirs, with records back to 1988.
DGT
Road incidents due to snow, ice and bad weather, from the Directorate-General for Traffic's National Access Point.
INE, Wikidata, IDECyL and Wikimedia Commons
The municipalities and their population, coordinates and mountain passes, the regional government's farming districts, and the photos, all under free licences with their authors credited.

How we built it

  • Two forecasts, side by side

    The model forecast always appears next to AEMET's official forecast for the same municipality. When they disagree, you can see it.

  • Warnings for the official zone, not the neighbour's

    Each municipality shows the warnings for its AEMET zone according to the official Meteoalerta table, not by proximity on a map.

  • Not mixing what can't be compared

    The forecast and the reanalysis measure soil at different depths, so comparisons with other years are always made within the reanalysis. And if a figure isn't available, it says so instead of making it up.

  • Data, not advice

    It doesn't say when to irrigate or treat a crop: these are model data for an area, not measurements of a plot. It shows them so the people who know their fields can decide.

  • It runs itself, and raises an alert if something fails

    Each source updates on its own schedule, from every few minutes (warnings, radar, roads) to once a week (reservoirs), without anyone touching anything. A daily check makes sure the live website works and raises an alert if it doesn't.

Each municipality's page

The Tordesillas page in Nuvola CyL: the current weather, the next 24 hours hour by hour and the next 7 days.
The page for Tordesillas, one of the 2,248. Background photo: Garabata, CC BY-SA 4.0. This screenshot is published under the same licence.

Credits

Información elaborada utilizando, entre otras, la obtenida de la Agencia Estatal de Meteorología.

Weather data by Open-Meteo.com (CC BY 4.0), with Copernicus data.

Reservoirs: Ministry for the Ecological Transition and the Demographic Challenge. Traffic: Directorate-General for Traffic.