Forecast Canadian fire danger indexes

Forecast for 13:00 2014-07-23

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 73 51 0.0 6 82.0 15.5 15.7 2.4 15.0 3.1
Badoura 75 48 0.0 7 85.3 23.2 111.5 3.9 30.5 8.1
Baudette 74 47 0.0 6 81.5 14.2 36.1 2.2 14.3 2.6
Bemidji 72 50 0.0 7 84.0 16.2 70.1 3.2 20.6 5.4
Bigstone 76 49 0.0 7 88.1 43.0 216.5 5.8 57.4 16.0
Brainerd 75 47 0.0 7 86.8 28.0 139.1 4.8 37.3 10.8
Camp Ripley/Little Falls 73 47 0.0 7 84.5 25.1 109.4 3.5 31.9 7.5
Carlos Avery 76 51 0.0 7 87.9 43.5 164.0 5.4 52.3 14.5
Cass Lake 72 50 0.0 5 83.3 19.8 154.0 2.6 29.9 5.5
Cutfoot 72 52 0.0 5 79.8 13.1 105.3 1.6 20.0 2.4
Detroit Lakes 75 47 0.0 7 85.7 25.1 139.8 4.1 34.7 9.2
Effie 72 50 0.0 6 83.2 11.7 80.7 2.7 17.2 3.9
Ely 73 43 0.0 7 82.2 17.2 163.9 2.6 27.3 5.1
Fernberg 71 45 0.0 7 80.7 16.5 131.5 2.1 25.1 4.0
Grand Portage 67 50 0.0 3 75.6 11.3 56.6 1.0 15.0 0.8
Hibbing 73 49 0.0 8 83.8 27.3 219.5 3.4 41.7 8.8
Hill City 71 55 0.0 7 81.1 15.7 152.0 2.2 25.0 4.2
Isabella 70 47 0.0 6 77.3 15.7 114.4 1.5 23.4 2.4
Itasca 75 45 0.0 7 83.9 13.2 92.0 3.2 19.5 5.1
Kelliher 73 50 0.0 6 81.4 11.9 106.7 2.1 18.6 3.2
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 75 49 0.0 6 83.2 15.8 44.1 2.7 16.7 3.8
Litchfield 76 46 0.0 7 88.6 41.3 221.4 6.2 56.3 16.7
Littlefork 74 47 0.0 6 83.2 12.9 65.4 2.6 17.3 3.9
Meander USFS 71 49 0.0 5 74.4 13.7 119.5 1.1 21.3 1.3
Mille Lacs WMA 74 51 0.0 6 82.0 18.2 149.0 2.3 27.9 4.6
MN Valley 77 49 0.0 7 88.1 33.7 182.5 5.7 46.1 14.1
Moose Lake 74 50 0.0 6 84.3 19.8 176.7 3.1 31.0 6.6
Mora 74 49 0.0 6 83.1 14.6 83.1 2.6 20.3 4.3
Orr 71 51 0.0 6 80.0 14.3 108.6 1.8 21.5 2.9
Redstn 74 54 0.0 6 87.4 61.9 268.5 4.7 78.6 16.3
Rice Lake 74 51 0.0 6 85.2 23.2 128.1 3.6 31.9 7.9
Roseau 74 51 0.0 5 83.9 17.9 116.8 2.7 25.9 5.1
Saginaw 72 50 0.0 8 83.4 18.8 180.6 3.3 29.9 6.8
Seagull Lake 73 39 0.0 7 79.9 14.3 152.5 1.9 23.2 3.3
Sherburne 75 51 0.0 7 87.7 40.7 180.3 5.4 52.0 14.5
St. Croix 77 46 0.0 6 84.9 23.7 165.5 3.5 34.9 7.9
Voyageurs/Kabnam 71 50 0.0 5 78.3 11.0 26.2 1.4 11.0 0.9

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.