Forecast Canadian fire danger indexes

Forecast for 13:00 2014-09-02

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 71 50 0.11 11 77.5 21.3 229.9 2.3 34.6 5.3
Badoura 72 50 0.03 12 85.8 15.9 285.3 6.0 27.9 11.2
Baudette 70 53 0.06 10 79.2 18.0 234.1 2.4 30.2 5.1
Bemidji 71 51 0.01 13 87.1 13.8 199.5 8.0 23.6 12.8
Bigstone 75 50 0.02 9 85.3 12.7 118.0 4.5 20.0 7.2
Brainerd 74 46 0.03 10 84.5 7.8 46.4 4.5 11.0 5.1
Camp Ripley/Little Falls 72 47 0.0 8 84.6 6.5 55.0 3.8 10.0 4.1
Carlos Avery 74 53 0.0 7 81.4 7.3 134.9 2.4 12.8 2.8
Cass Lake 73 48 0.03 9 86.5 12.5 273.9 5.3 22.4 8.9
Cutfoot 72 47 0.03 6 84.7 14.7 281.7 3.3 26.1 6.4
Detroit Lakes 71 54 0.11 13 77.7 12.5 289.5 2.6 22.6 4.5
Effie 72 47 0.02 7 87.0 13.7 256.3 4.9 24.1 8.7
Ely 72 42 0.03 9 81.4 10.0 203.1 2.8 17.8 4.2
Grand Portage 69 49 0.01 6 69.3 4.1 139.5 1.0 7.6 0.5
Hibbing 73 43 0.01 10 83.0 11.8 321.6 3.7 21.6 6.3
Hill City 72 47 0.02 6 86.3 11.6 245.9 4.1 20.8 6.8
Isabella 70 47 0.01 9 76.9 5.9 188.0 1.8 10.9 1.6
Itasca 72 49 0.04 13 84.8 11.2 236.6 5.8 20.0 9.0
Kelliher 71 50 0.0 10 86.3 12.8 252.7 5.8 22.8 9.7
Kittson 71 52 0.1 10 73.2 13.9 234.8 1.6 24.2 2.8
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Litchfield 74 51 0.0 8 83.1 7.7 224.0 3.2 14.2 4.1
Littlefork 70 50 0.02 7 86.6 24.9 256.8 4.7 40.1 11.2
Meander USFS 71 46 0.13 8 74.9 11.9 286.5 1.5 21.5 2.1
Mille Lacs WMA 73 48 0.0 8 79.5 5.5 72.7 2.1 9.2 1.8
MN Valley 75 52 0.0 6 82.3 14.4 263.0 2.4 25.4 4.6
Moose Lake 73 44 0.04 10 81.0 7.9 195.7 2.8 14.3 3.7
Mora 73 47 0.0 8 81.4 7.0 107.0 2.5 12.1 2.9
Orr 71 45 0.03 7 81.5 21.5 315.4 2.3 36.8 5.7
Redstn 74 53 0.0 11 86.7 12.8 293.7 6.7 23.0 11.0
Rice Lake 72 46 0.03 9 81.1 6.7 61.9 2.7 10.5 2.8
Roseau 70 57 0.03 11 80.8 20.3 365.3 3.1 35.6 7.2
Saginaw 72 45 0.01 7 80.8 7.1 182.6 2.2 13.0 2.5
Seagull Lake 71 44 0.03 9 76.7 6.1 135.2 1.8 10.9 1.5
Sherburne 74 49 0.0 8 82.9 9.2 108.9 3.1 15.2 4.2
St. Croix 74 43 0.01 8 82.4 8.4 177.4 2.9 15.1 3.9
Voyageurs/Kabnam 70 48 0.02 5 68.7 19.0 234.9 0.9 31.7 1.3

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.