Forecast Canadian fire danger indexes

Forecast for 13:00 2014-07-30

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 76 48 0.0 10 87.9 20.1 56.8 7.3 21.3 11.4
Badoura 76 48 0.0 10 88.1 29.3 163.3 7.5 40.4 16.2
Baudette 75 50 0.0 9 88.1 32.5 91.2 6.9 34.4 13.9
Bemidji 76 46 0.0 11 88.6 28.6 121.7 8.4 36.0 16.6
Bigstone 77 46 0.0 6 88.7 35.6 243.1 6.0 52.1 15.6
Brainerd 78 44 0.0 9 89.4 33.6 178.6 8.2 45.7 18.5
Camp Ripley/Little Falls 76 45 0.0 9 88.9 47.0 167.5 7.7 55.2 19.4
Carlos Avery 76 49 0.0 8 88.4 37.0 189.4 6.5 49.7 16.2
Cass Lake 76 43 0.0 8 89.0 22.5 170.4 7.1 33.8 14.1
Cutfoot 75 49 0.0 8 88.2 29.7 161.6 6.4 40.7 14.3
Detroit Lakes 74 49 0.0 9 87.9 35.6 194.9 6.7 48.9 16.3
Effie 76 47 0.0 9 88.3 19.6 120.9 6.7 27.9 12.2
Ely 74 46 0.08 9 82.1 16.9 175.1 3.0 27.3 6.0
Fernberg 74 46 0.09 8 79.6 16.8 156.3 2.1 26.5 4.1
Grand Portage 67 60 0.08 6 67.7 7.1 53.3 1.0 10.7 0.6
Hibbing 76 45 0.0 9 86.7 23.9 227.4 5.6 37.8 12.5
Hill City 75 51 0.0 10 87.7 20.1 182.1 6.8 31.5 13.1
Isabella 72 48 0.11 9 77.7 16.0 149.5 2.0 25.3 3.7
Itasca 75 47 0.0 10 87.9 24.2 147.0 7.3 34.3 14.6
Kelliher 75 51 0.0 10 87.6 19.9 148.1 7.0 29.8 13.1
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 78 47 0.0 9 88.6 25.8 94.4 7.2 30.6 13.5
Litchfield 78 44 0.0 8 88.7 23.7 230.3 6.8 37.7 14.5
Littlefork 78 44 0.19 9 77.9 14.4 93.9 2.0 20.8 3.1
Meander USFS 74 49 0.04 8 81.4 17.9 158.6 2.6 27.9 5.3
Mille Lacs WMA 76 47 0.03 9 87.5 21.9 185.9 6.3 33.9 12.8
MN Valley 76 49 0.0 8 88.4 37.1 229.1 6.5 52.8 16.7
Moose Lake 76 48 0.24 6 70.8 13.5 202.7 1.0 23.2 1.2
Mora 76 46 0.01 9 88.6 26.3 130.2 7.4 34.9 14.8
Orr 75 48 0.05 8 84.5 20.2 139.5 3.8 29.7 7.8
Redstn 74 50 0.0 5 87.2 24.1 241.6 4.2 38.6 9.9
Rice Lake 77 48 0.13 7 78.1 20.2 166.9 1.7 31.1 3.5
Roseau 78 48 0.0 9 88.5 30.9 172.2 7.3 42.7 16.3
Saginaw 76 45 0.03 9 86.7 14.8 185.8 5.6 24.7 9.8
Seagull Lake 72 44 0.11 7 77.8 14.4 183.0 1.7 24.0 2.9
Sherburne 78 45 0.0 9 89.0 38.7 212.5 7.5 53.2 18.7
St. Croix 78 48 0.03 4 87.2 32.3 217.9 4.0 47.1 10.7
Voyageurs/Kabnam 75 48 0.15 7 75.4 13.6 50.2 1.4 16.2 1.4

Interpretation

The following chart is a statewide generalized fire danger rating chart for the Canadian Fire Weather Index. It is based on a five class danger rating system, i.e., low, moderate, high, very high , and extreme. The distribution is based on weather records from 1985 - 1998. Low days occurred 45% to 50% of the time, moderate - 30 %, high days - 12% to 15%, very high days occurred 7%-8% of the time, and extreme days were 2%-3%. This is not meant to be used as a staffing guide . Each area needs to look at its own weather data coupled with its fire occurrence data. For instance, if you have a drought code of 380, it does not mean you are in extreme fire danger. It means that the drought code only gets that high on 2% of the days between April 1 and November 1.

Index Low Moderate High Very High Extreme

FFMC

0.0 - 80.9

81.0 - 87.9

88.0 - 90.4

90.5 - 92.4

92.5+

DMC

0.0 - 12.9

13.0 - 27.9

28.0 - 41.9

42.0 - 62.9

63.0+

DC

0.0 - 79.9

80.0 - 209.9

210.0 - 273.9

274.0 - 359.9

360.0+

ISI

0.0 - 3.9

4.0 - 7.9

8.0 - 10.9

11.0 - 18.9

19.0+

BUI

0.0 - 18.9

19.0 - 33.9

34.0 - 53.9

54.0 - 76.9

77.0+

FWI

0.0 - 4.9

5.0 - 13.9

14.0 - 20.9

21.0 - 32.9

33.0+

Definitions

Fine Fuel Moisture Code (FFMC)

This provides a relative indicator of the moisture in the fine fuels. Like the 1 hour fuel moisture, it reacts directly with the air temperature and relative humidity.

Duff Moisture Code (DMC)

This is an index of the moisture of the loosely compact organic layers at a depth of 2-4 inches.

Drought Code (DC)

This measures long term dryness in the fuels. It is a longer term index than the NFDRS 1000 fuel moisture. It doesn't reflect the probability of fire occurrence by itself, but can be useful in predicting the level of mop up needed and the consumption of large fuels. It should be looked at in relation to peat fire starts.

Initial Spread Index (ISI)

This is based on the FFMC and the wind speed. It provides a relative numerical rating of the expected rate of spread. This is similar to the NFDRS Spread Component.

Buildup Index (BUI)

This index is based on the DC and the DMC. It provides a relative indication of the amount of fuel available for combustion. This is somewhat similar to the NFDRS Energy Release Component. It doesn't predict what a given day might be like, but does relate well to the dryness of the fuels.

Fire Weather Index (FWI)

This combines the BUI and the ISI to give a relative numerical rating of fire intensity. It can be compared to the NFDRS Burning Index.