Meteoalarm Info

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Fire Indexes

FWI (Fire Weather Index)

Fire prevention season is OFF.  Starting from November 1st and until April 30th included, outdoor burning is permitted. Those who perform field cleaning or tree pruning should avoid burning when high temperatures prevail and especially when wind blows. Immediately after burning, extinguish the smoking remains with water.

The FWI (Fire Weather Index) combines the ISI (Initial Spread Index) and the BUI (Buildup Index) to provide a numerical rating of the likely intensity of a fire. FWI is divided into 5 fire danger classes:

Low 0-11.1   Moderate 11.2-21.2   High 21.3-37.9   Very High 38-49.9   Extreme 50+

The following board is updated once a day at 12:02 local time

FWI Data recorded at Sykia Weather Station the last 15 days. Last updated:

Sykia Fire Weather Page

07/04/2024 13:02:40

Wind Speed

FFMC (Fine Fuel Moisture Code): This is a numeric rating of the moisture content of litter and other cured (dried) fine fuels. This code is an indicator of the relative ease of ignition and the flammability of fine fuel. The FFMC rating is on a scale of 0 to 99. Any figure above 70 is high, and above 90 is extreme.

DMC (Duff Moisture Code): This is a numeric rating 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. A DMC rating of more than 30 is dry, and above 40 indicates that intensive burning will occur in the duff and medium fuels. Open air fire burn should not be carried out when the DMC rating is above 40.

DC (Drought Code): This is a numeric rating 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 DC rating of 200 is high, and 300 or more is extreme indicating that fire will involve deep sub-surface and heavy fuels. Open air fire burn should not be permitted when the DC rating is above 300.

ISI (Initial Spread Index): This is a numeric rating 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. The open-ended ISI scale starts at zero and a rating of 10 indicates high rate of spread shortly after ignition. A rating of 16 or more indicates extremely rapid rate of spread.

BUI (Buildup Index): This is a numeric rating of the total amount of fuel available for combustion. It combines the DMC and the DC. The BUI scale starts at zero and is open-ended. A rating above 40 is high, above 60 is extreme.

Structure of the FWI System (Natural Resources Canada)

You find our weather info also at:

European Weather Network

Weather Underground


Citizen Weather Observer Program (CWOP)

UK Metoffice

Equipment we use:

Davis Wireless Vantage Pro2

Davis Wireless Vantage Pro2