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Fire Indexes


FWI (Fire Weather Index)

Fire prevention season is ON.  Law prohibits outdoor burning.

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 noon 13:02 local time





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

Sykia Fire Weather Page

07/07/2020 13:02:02

DateTemp
ºC
Humidity
%
Wind Speed
kmph
Rainfall
mm
FFMCDMCDCISIBUIFWIFWI DC
07/07/202028,25413,00,0087,71415745,917526,7HIGH
06/07/202028,7516,51,2085,31385653,017216,4MODERATE
05/07/202030,9444,71,4086,81355563,416817,9MODERATE
04/07/202030,0544,70,0089,31315474,916423,2HIGH
03/07/202029,3567,90,0089,31285385,716025,6HIGH
02/07/202029,7473,20,0089,31245294,515721,5HIGH
01/07/202028,6581,40,0088,01215203,415317,4MODERATE
30/06/202025,76213,00,0088,01185116,214926,6HIGH
29/06/202026,8543,20,0089,61155034,714721,8HIGH
28/06/202029,14211,20,0090,61124958,214331,8HIGH
27/06/202027,8389,70,0090,61084867,613929,9HIGH
26/06/202028,74713,00,0089,01044787,113528,3HIGH
25/06/202026,4543,20,0086,71014693,113115,4MODERATE
24/06/202023,8634,70,0083,4984612,112811,2MODERATE
23/06/202022,96414,42,0078,0964531,912510,2LOW


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

AWEKAS

Citizen Weather Observer Program (CWOP)

UK Metoffice

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