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
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.
The 2025 draft NPPF in brief with indicative responses
Local verses National and suitable verses sustainable: Consultation open for just over one week.
Increased vigilance on VAT Domestic Reverse Charge
HMRC bearing down with increasing force on construction consultant says.
Call for greater recognition of professional standards
Chartered bodies representing more than 1.5 million individuals have written to the UK Government.