Forecast Canadian fire danger indexes

Forecast for 13:00 2015-05-25

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 68 50 0.0 13 89.7 29.3 225.6 12.2 44.3 24.0
Badoura 61 82 0.21 9 52.4 14.1 79.0 0.4 19.5 0.4
Baudette 70 45 0.0 11 90.8 29.1 73.0 11.5 29.1 18.8
Bigstone 63 83 0.61 10 41.6 9.9 115.5 0.1 16.3 0.1
Brainerd 60 88 0.37 9 38.8 11.6 43.2 0.1 13.9 0.0
Camp Ripley/Little Falls 61 87 0.58 6 34.3 9.7 89.2 0.0 15.3 0.0
Carlos Avery 64 77 0.74 4 40.2 11.3 158.6 0.1 19.1 0.0
Cass Lake 64 76 0.04 7 80.5 23.4 65.4 2.1 24.7 3.9
Cutfoot 64 75 0.02 4 85.3 24.1 59.3 3.1 24.1 5.7
Detroit Lakes 63 73 0.18 10 62.0 16.1 181.7 1.0 26.3 1.4
Effie 65 68 0.01 6 87.1 24.7 124.8 4.7 33.0 9.9
Ely 63 79 0.01 7 85.1 25.6 73.4 3.8 27.4 7.5
Fernberg 62 77 0.01 8 85.4 27.9 87.9 4.3 31.1 8.9
Grand Portage 55 92 0.01 12 81.0 20.3 37.7 3.3 20.1 5.4
Hibbing 60 79 0.05 9 77.4 23.0 153.3 1.9 33.5 4.2
Hill City 61 86 0.13 7 57.2 18.2 110.2 0.6 25.7 0.6
Isabella 58 91 0.03 9 80.1 24.2 69.1 2.4 25.8 4.6
Itasca 65 68 0.06 9 78.6 24.0 105.0 2.0 30.5 4.4
Kelliher 67 61 0.0 9 87.9 24.5 89.7 6.6 29.1 12.3
Kittson 71 44 0.0 11 90.8 28.0 182.9 11.5 40.5 22.1
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Litchfield 64 82 0.76 8 39.6 7.9 11.4 0.1 7.6 0.0
Littlefork 70 46 0.0 7 90.7 28.2 96.0 8.5 32.5 15.8
Meander USFS 63 68 0.01 6 87.4 26.5 47.1 4.9 26.3 9.1
MN Valley 66 74 0.67 11 51.2 10.6 183.1 0.5 18.5 0.4
Moose Lake 55 99 0.35 9 24.1 12.8 106.9 0.0 19.7 0.0
Mora 60 83 0.52 6 38.3 10.7 91.6 0.0 16.5 0.0
Orr 66 62 0.01 5 88.4 26.9 113.3 5.1 33.8 10.8
Redstn 65 80 0.24 10 40.7 6.0 50.4 0.1 9.3 0.1
Rice Lake 58 94 0.3 9 34.4 12.4 59.4 0.0 16.3 0.0
Roseau 71 41 0.0 11 91.3 29.0 217.7 12.6 43.5 24.5
Saginaw 58 100 0.18 11 35.1 15.1 49.4 0.0 17.1 0.0
Seagull Lake 62 76 0.01 9 85.6 29.9 103.0 4.8 34.7 10.5
Sherburne 63 79 0.77 4 38.8 10.0 61.7 0.0 14.3 0.0
Skibo 60 84 0.04 8 79.4 24.8 43.1 2.1 24.6 3.8
St. Croix 59 90 0.57 7 31.7 11.6 73.8 0.0 16.6 0.0
Superior #2 63 69 0.01 7 87.0 25.8 61.3 5.0 25.8 9.1
Voyageurs/Kabnam 68 53 0.0 6 89.6 27.9 44.5 6.8 27.6 12.2

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.