Forecast Canadian fire danger indexes

Forecast for 13:00 2015-04-19

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 49 70 0.44 16 50.4 19.3 218.1 0.7 31.6 0.8
Badoura 47 83 0.67 14 37.5 21.2 329.5 0.1 36.5 0.1
Baudette 46 77 0.26 12 48.9 18.8 114.8 0.4 26.7 0.4
Bemidji 47 79 0.58 16 42.2 13.7 168.4 0.2 22.8 0.2
Bigstone 55 57 0.52 25 61.6 30.8 226.1 3.3 46.0 9.1
Brainerd 52 79 0.66 12 41.2 18.3 118.3 0.1 26.4 0.1
Camp Ripley/Little Falls 53 72 0.59 15 49.1 24.9 108.4 0.5 31.6 0.6
Carlos Avery 55 76 0.41 7 45.2 14.2 124.7 0.2 22.1 0.1
Cass Lake 48 81 0.57 10 38.2 17.4 261.6 0.1 29.9 0.1
Cutfoot 46 85 0.54 7 33.1 20.1 201.0 0.0 32.1 0.0
Detroit Lakes 49 73 0.6 20 48.3 24.3 276.3 0.7 39.9 0.9
Effie 45 87 0.47 5 31.0 17.8 186.9 0.0 28.8 0.0
Ely 43 86 0.25 7 41.5 17.3 28.9 0.1 17.1 0.1
Grand Portage 39 83 0.05 8 73.0 18.5 22.6 1.3 18.2 1.5
Hibbing 46 89 0.36 4 32.4 16.9 219.6 0.0 28.4 0.0
Hill City 47 91 0.52 7 28.7 19.7 156.7 0.0 30.0 0.0
Isabella 39 92 0.2 7 39.3 13.3 29.2 0.1 13.2 0.0
Itasca 47 79 0.58 17 42.9 18.7 271.9 0.2 32.0 0.3
Kelliher 46 80 0.46 12 40.9 18.5 159.6 0.1 28.7 0.1
Kittson 51 65 0.32 19 57.2 18.2 304.2 1.5 31.7 3.3
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Litchfield 55 70 0.59 19 53.4 14.0 164.7 1.1 23.1 1.4
Littlefork 45 84 0.31 4 38.0 22.1 149.3 0.0 32.2 0.0
Meander USFS 42 90 0.25 5 36.7 15.4 81.8 0.0 21.0 0.0
MN Valley 57 74 0.42 12 51.2 35.4 188.5 0.5 48.2 0.8
Moose Lake 51 96 0.32 4 27.8 17.3 140.5 0.0 26.4 0.0
Mora 52 79 0.42 7 41.7 18.5 80.3 0.1 23.5 0.1
Orr 44 91 0.36 4 31.0 18.3 183.6 0.0 29.3 0.0
Redstn 56 53 0.46 24 63.7 26.7 146.6 3.5 36.7 8.3
Rice Lake 50 95 0.35 6 27.9 18.2 77.3 0.0 22.9 0.0
Roseau 49 72 0.28 14 52.4 21.1 252.3 0.7 35.0 0.9
Saginaw 47 97 0.28 6 28.8 17.1 66.9 0.0 20.8 0.0
Seagull Lake 40 83 0.11 8 59.3 20.5 42.1 0.8 20.4 0.7
Sherburne 54 75 0.57 11 45.9 14.1 138.3 0.2 22.5 0.2
Skibo 44 91 0.24 7 37.9 14.6 24.0 0.0 14.4 0.0
St. Croix 54 87 0.31 7 40.8 16.8 24.3 0.1 16.6 0.1
Superior #2 42 91 0.25 6 37.4 19.9 56.9 0.0 21.2 0.0
Voyageurs/Kabnam 44 89 0.26 4 36.7 20.2 69.2 0.0 23.4 0.0

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.