AFDRS Calcs
Calculator
Fire Behaviour Index
Fire Danger Rating
Fire Danger Index & Rating
Flame Height
Spotting Distance
Rating of Spread
Fuel Moisture Content
Intensity
Crown Probability
Spread Probability
Spread Index
Calculate
Model
Buttongrass
Forest
Grassland
Heathland
Mallee heath
Pine
Savanna
Spinifex
Sub-model
Choose Submodel
Buttongrass
Time of day (24hr)
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Month
1
2
3
4
5
6
7
8
9
10
11
12
Temperature
0
50
25
Relative humidity
5
100
30
Wind Speed
0
70
20
Drought Factor
8
Range: 1 - 10
Canopy Height (m)
10
Range: 5 - 30
Canopy Coverage (%)
50
Range: 0- 100
Current Fine fuel load (t/ha) - Surface
10
Range: 0 - 20
Current Fine fuel load (t/ha) - Near Surface
2
Range: 0 - 8
Current Fine fuel load (t/ha) - Elevated
2
Range: 0 - 8
Current Fine fuel load (t/ha) - Bark
2
Range: 0 - 8
Current Fine fuel load (t/ha) - Overstorey (Canopy)
4.5
Range: 0 - 15
Current Fine fuel load (t/ha) - Total available
12
Range: 0 - 30
Height (cm) - Near Surface
20
Range: 0 - 40
Height (m) - Elevated
2
Range: 0 - 4
Height curve k value - Near Surface
1.0
Range: 0 - 1
Wind reduction factor for Vesta for Wet Forest
3
Range: 2.5 - 5
Dew Point Temperature
6
Range: -6 - 45
Time since fire
25
Range: 1 - 25
Grass Curing (%)
100
Range: 0 - 100
Grass condition
Eaten Out
Grazed
Natural
Grass Load
4.5
Range: 1 - 12
Drought Index
100
Range: 0 - 200
Recent Rainfall
0
Range: 0 - 100
Time since rain
48
Range: 0 - 48
Soil Moisture
0
Range: 0 - 1
Fuel accumulation curve k value - Surface
1.0
Range: 0 - 1
Fuel accumulation curve k value - Near Surface
1.0
Range: 0 - 1
Fuel accumulation curve k value - Elevated
1.0
Range: 0 - 1
Fuel accumulation curve k value - Bark
1.0
Range: 0 - 1
Fuel accumulation curve k value - Overstorey (Canopy)
1.0
Range: 0 - 1
Fuel accumulation curve k value - Total available
1.0
Range: 0 - 1
Height (m) - Overstorey (Canopy)
20
Range: 10 - 60
Cover (%) - Overstorey (Canopy)
40
Range: 0 - 100
Are the trees less than 10m tall?
No
Yes
Heathland below Woodland Canopy?
No
Yes
Buttongrass Productivity
Low
Medium
Spinifex productivity
Low
Medium
High