Government Fire Danger rating - Very High
The Australian Government Bureau of Meterology fire risk ratings for Banksia Park area.
South Australia Fire Danger Ratings
Issued at 4:05 pm CDT on Saturday 4 February 2012.
Rating for the Mount Lofty Ranges district: Very High
Rating for the Adelaide Metropolitan district: High
For details of other parts of the state, please visit BOM Fire Danger ratings for South Australia
NOTE : For information on FIRE BANS, please contact the CFS Hotline on 1300 362 361 or visit the CFS web site. Weather and FIRE BAN information is also available through the Bureau of Meteorology web site
Fire Weather Index - VERY HIGH |
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The following information is based on the Canadian and New Zealand system for predicting the risk of wild fire. It uses measurements collected by this weather station of wind, temperature and humidity to calculate a number of indicators which are then combined to give an overall score, the Fire Weather Index or FWI.
You should contact your local Fire Service, Department of Environment and Heritage or Bureau of Meteorology office for information that can help you make decisions.
Fire Weather Index (FWI) is calculated at 13:00hrs and is current for 05/02/12 08:50 AM |
|
| Today's Fire Weather Index | 25.7 |
| Fire Weather risk rating | |
| Fine fuel moisture code (FFMC) | 91.5 |
| Duff moisture code (DMC) | 153.3 |
| Drought code (DC) | 640.4 |
| Initial spread index (ISI) | 5.5 |
| Build up index (BUI) | 191.8 |
Fine Fuel Moisture Code - 91.5
The Fine Fuel Moisture Code (FFMC) is a numeric rating between 0 and 101 of the moisture content of litter and other cured fine fuels. This code is an indicator of the relative ease of ignition and the flammability of fine fuel. It is calculated using wind, temperature, relative humidity and rain.
A rating of:
- under 58 suggests low probability of fire ignitions
- 58 - 74 suggests 50% of fires will ignite
- 74 to 86 suggests all fires will rapidly ignite
- over 86 suggests extreme fire behavior
Duff Moisture Code - 153.3
The Duff Moisture Code (DMC) is a numeric rating between 0 and 150 of the average moisture content of loosely compacted organic layers of moderate depth. This code gives an indication of fuel consumption in moderate duff layers and medium-size woody material. It uses temperature, relative humidity and rain in it's calculation.
A rating of
- greater than 30 is high fire risk
- greater than 40 is extreme fire risk
Drought Code - 640.4
The Drought Code (DC) is a numeric rating between 0 and 800 of the average moisture content of deep, compact organic layers. This code is a useful indicator of seasonal drought effects on forest fuels and the amount of smoldering in deep duff layers and large logs.
A drought code of:
- 200 is a high risk of fire
- 300 is a very high risk of fire
- 350 is an extreme risk of fire
Initial Spread Index - 5.5
The Initial Spread Index (ISI) is a numeric rating between 0 and 100 of the expected rate of fire spread. It combines the effects of wind and the FFMC on rate of spread without the influence of variable quantities of fuel. It uses the FFMC rating and Wind in it's calculation.
An ISI of greater than 10 will see rapid spread of fires.
Buildup Index - 191.8
The Buildup Index (BUI) is a numeric rating between 0 and 200 of the total amount of fuel available for combustion. To calculate it combines the DMC and the DC..
A BUI of greater than 40 is a high fire risk with a BUI of greater than 60 is an extreme fire risk.
Fire Weather Index - 25.7
The Fire Weather Index (FWI) is a numeric rating between 0 and 150 of fire intensity. It combines the Initial Spread Index and the Buildup Index. It is suitable as a general index of fire danger.
The ratings are based on the following FWI scores:
- FWI score of less than 7.0 is a low risk of fire
- FWI score of between 7.0 and 15.9 is a moderate risk of fire
- FWI score of between 16 and 24.9 is a high risk of fire
- FWI score of between 25 and 30.9 is a very high risk of fire
- FWI score of 31 or more is an extreme risk of fire
References
- Canadian Forest Fire Weather Index (FWI) system
- NZ National Rural Fire FWI Help Guide operational interpretation
- Banksia Park Weather. The script used to create this page developed by Trevor van der Linden using scripts from Carterlake and others. See About section for more.