Forecast Canadian fire danger indexes

Forecast for 12:00 2014-12-19

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 22 85 0.0 11 61.8 16.5 311.1 1.1 29.1 1.8
Badoura 24 81 0.0 9 68.1 17.8 404.3 1.2 32.1 2.4
Baudette 22 82 0.0 8 66.5 1.4 165.1 1.1 2.7 0.4
Bemidji 22 84 0.0 9 71.5 12.1 297.5 1.4 22.0 2.0
Bigstone 27 81 0.0 9 77.5 21.9 280.6 1.8 36.6 4.4
Brainerd 26 83 0.0 8 60.1 3.1 154.5 0.8 5.9 0.4
Camp Ripley/Little Falls 24 85 0.0 7 50.3 2.4 154.3 0.3 4.6 0.1
Carlos Avery 26 77 0.0 6 57.2 10.1 256.6 0.6 18.4 0.5
Cass Lake 25 79 0.0 7 73.5 14.0 384.6 1.3 25.7 2.1
Cutfoot 26 80 0.01 7 52.9 2.7 327.9 0.4 5.3 0.2
Detroit Lakes 25 82 0.0 11 71.6 13.9 362.3 1.6 25.4 2.8
Effie 24 80 0.01 7 70.2 7.4 309.5 1.1 14.0 0.8
Ely 24 79 0.01 4 62.3 4.6 283.1 0.7 8.8 0.4
Fernberg 24 85 0.01 4 46.9 2.4 252.7 0.2 4.7 0.1
Grand Portage 26 87 0.18 6 26.4 0.0 151.4 0.0 0.0 0.0
Hibbing 24 74 0.0 6 64.4 2.1 255.2 0.9 4.1 0.3
Hill City 25 77 0.0 7 64.0 4.0 247.7 0.9 7.7 0.5
Isabella 24 86 0.01 4 46.9 0.0 176.3 0.2 0.0 0.0
Itasca 24 79 0.0 9 73.4 26.0 404.0 1.5 44.8 4.0
Kelliher 24 77 0.0 8 70.0 5.3 232.0 1.2 10.0 0.7
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 22 86 0.0 11 73.0 17.8 325.4 1.7 31.3 3.6
Litchfield 26 88 0.0 8 47.0 6.1 266.6 0.2 11.5 0.1
Littlefork 24 78 0.01 6 62.2 1.0 265.1 0.8 2.0 0.2
Meander USFS 23 80 0.01 4 39.9 0.0 276.3 0.0 0.0 0.0
MN Valley 29 78 0.0 7 77.5 43.2 249.7 1.6 60.3 5.6
Moose Lake 25 83 0.0 4 45.7 0.0 172.9 0.1 0.0 0.0
Mora 24 81 0.0 6 48.2 2.3 108.3 0.2 4.4 0.1
Orr 23 77 0.01 4 60.7 2.8 343.9 0.6 5.5 0.3
Redstn 27 85 0.0 11 33.6 10.1 315.9 0.0 18.7 0.0
Rice Lake 26 81 0.0 6 31.6 0.0 113.1 0.0 0.0 0.0
Roseau 22 82 0.0 9 76.3 12.4 341.7 1.7 22.7 2.8
Saginaw 23 81 0.0 6 46.2 0.0 154.3 0.2 0.0 0.0
Sherburne 26 80 0.0 7 48.8 5.1 221.0 0.3 9.6 0.1
St. Croix 25 78 0.0 4 47.4 1.3 72.3 0.2 2.5 0.1
Voyageurs/Kabnam 24 77 0.01 4 46.9 0.0 200.7 0.2 0.0 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.