Lowveld Fire Danger Index (LFDI)
🚧 under development/evaluation 🚧
• The Lowveld Fire Danger Index (LFDI) is South Africa's official system for assessing
and communicating wildfire risk based on meteorological conditions.
Based on available data of: temperature (°C), Relative Humidity (%), Wind Speed (km/h), previous Rain height (mm)
and Days since rainfall at the site of each
Weather Station,
a Fire Danger Index is calculated according to LFDI method and is presented using the following color scale:
Implemented calculations are described in
The SouthAfrican Lowveld Fire Danger Index (LFDI) and Its Applicability in Greece
• Related
documents.
LFDI = (BI + WF) × RCF (0 < LFDI <= 100)
• BI = Burning Index
• WF = Wind Factor
• RCF = Rain Correction Factor
1. Burning Index (BI)
BI = (T − 35) − ((35 − T) / 30) + ((100 − RH) × 0.37) + 30
• T = Air Temperature (°C)
• RH = Relative Humidity (%)
2. Wind Factor (WF)
WF = −0.0000227 × WS4 + 0.0026348 × WS3 − 0.09087 × WS2 + 1.65 × WS + 0.2
• WS = Wind Speed (km/h)
3. Rain Correction Factor (RCF) (0 < RCF <= 1.0)
RCF = 0.62 − 0.0342 × P + 0.000609 × P2 − 0.000004 × P3 + 0.1761 × D − 0.01141 × D2 + 0.000279 × D3
• P = Rainfall since last rain (mm)
• D = Days since last rain
Environmental Forest Fire Danger Rating Systems and Indices around the Globe: A Review