Fire Weather Index FWI
The Fire Weather Index (FWI) is worldwide index used to estimate fire danger risk. It is meteorologically based and consists of different elements that take account of the effects of fuel moisture and wind on the behaviour and spread of fire. The higher the FWI, the higher the risk - or the more favourable meteorological conditions are to trigger a wildfire.
This indicator can help shape long-term tourism strategies and future investments under a changing climate.
| MAIN VARIABLES | ||
| NAME | UNITS | DESCRIPTION |
| Daily fire weather index | Dimensionless | The fire weather index values at a daily temporal resolution for the selected year. The higher the index value, the more favourable the meteorological conditions to trigger a wildfire are. |
| Number of days with high fire danger | Count | Number of days per year with a fire weather index greater than 30 based upon the European Forest Fire Information System (EFFIS) classification. |
| Number of days with moderate fire danger | Count | The number of days per year with a daily fire weather index greater than 15 based upon the European Forest Fire Information System (EFFIS) classification. |
| Number of days with very high fire danger | Count | Number of days per year with a fire weather index greater than 45 based upon the European Forest Fire Information System (EFFIS) classification. |
| Seasonal fire weather index | Dimensionless | The mean fire weather index value over the European fire season (June-September). This is calculated as the sum of the daily fire weather index over the European fire season divided by the total number of days within this date range. The higher the index value, the more favourable the meteorological conditions to trigger a wildfire are. |
Source : https://climate.copernicus.eu/fire-weather-index
[edit] Related articles on Designing Buildings
Featured articles and news
Infrastructure that connect the physical and digital domains.
Harnessing robotics and AI in challenging environments
The key to nuclear decommissioning and fusion engineering.
BSRIA announces Lisa Ashworth as new CEO
Tasked with furthering BSRIA’s impressive growth ambitions.
Public buildings get half a million energy efficiency boost
£557 million to switch to cleaner heating and save on energy.
CIOB launches pre-election manifesto
Outlining potential future policies for the next government.
Grenfell Tower Inquiry announcement
Phase 2 hearings come to a close and the final report due in September.
Progress from Parts L, F and O: A whitepaper, one year on.
A replicated study to understand the opinion of practitioners.
ECA announces new president 2024
Electrical engineer and business leader Stuart Smith.
A distinct type of countryside that should be celebrated.
Should Part O be extended to existing buildings?
EAC brands heatwave adaptation a missed opportunity.
Definition of Statutory in workplace and facilities management
Established by IWFM, BESA, CIBSE and BSRIA.
Tackling the transition from traditional heating systems
59% lack the necessary information and confidence to switch.
The general election and the construction industry
As PM, Rishi Sunak announces July 4 date for an election.
Eco apprenticeships continue help grow green workforce
A year after being recognised at the King's coronation.
Permitted development rights for agricultural buildings
The changes coming into effect as of May 21, 2024.