Forecast Canadian fire danger indexes

Forecast for 12:00 2015-01-19

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 27 83 0.04 11 70.8 14.4 311.2 1.6 25.8 2.9
Badoura 28 85 0.03 7 72.7 8.8 392.1 1.2 16.7 1.0
Baudette 25 81 0.01 9 78.6 0.0 160.9 2.0 0.0 0.4
Bemidji 27 82 0.01 12 79.7 10.2 297.5 2.8 18.8 4.4
Bigstone 41 64 0.0 11 81.6 17.6 282.8 3.2 30.4 6.8
Brainerd 30 86 0.01 7 75.5 1.8 154.6 1.4 3.5 0.5
Camp Ripley/Little Falls 34 73 0.0 4 79.1 1.1 154.5 1.5 2.1 0.5
Carlos Avery 33 70 0.0 6 79.9 5.0 243.8 1.9 9.5 1.4
Cass Lake 28 79 0.01 8 75.4 10.7 384.7 1.5 20.0 2.1
Cutfoot 25 87 0.01 8 78.7 0.1 312.3 1.9 0.2 0.4
Detroit Lakes 31 87 0.06 11 64.3 13.4 362.5 1.3 24.5 2.0
Effie 24 80 0.01 8 80.0 4.4 301.5 2.2 8.5 1.7
Ely 19 77 0.0 8 71.5 1.9 274.8 1.3 3.7 0.5
Fernberg 18 78 0.0 8 76.9 0.5 245.0 1.7 1.0 0.4
Grand Portage 13 78 0.02 5 79.1 0.1 129.0 1.6 0.2 0.4
Hibbing 23 75 0.0 11 79.8 0.0 240.6 2.8 0.0 0.6
Hill City 24 88 0.01 8 77.9 0.6 232.6 1.9 1.2 0.5
Isabella 18 88 0.01 8 76.8 0.0 176.3 1.7 0.0 0.3
Itasca 27 85 0.01 9 76.9 26.0 404.1 1.8 44.8 5.1
Kelliher 26 85 0.01 7 78.8 3.0 226.9 1.8 5.8 0.8
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 27 87 0.04 11 70.0 14.9 325.4 1.5 26.7 2.8
Litchfield 36 71 0.0 4 80.0 3.0 262.3 1.6 5.9 0.8
Littlefork 21 81 0.0 7 79.4 0.0 248.6 1.9 0.0 0.4
Meander USFS 19 82 0.0 7 77.8 0.0 260.1 1.7 0.0 0.3
MN Valley 36 68 0.0 7 81.3 43.6 250.5 2.3 60.8 7.8
Moose Lake 26 85 0.01 7 78.1 0.1 172.9 1.7 0.2 0.4
Mora 33 70 0.0 5 80.7 1.0 108.3 1.8 1.9 0.5
Orr 21 76 0.0 8 79.0 0.1 331.4 1.9 0.2 0.4
Redstn 45 57 0.03 14 80.1 6.6 308.8 3.7 12.5 4.5
Rice Lake 26 87 0.01 8 75.1 0.0 103.9 1.5 0.0 0.3
Roseau 25 78 0.03 12 76.5 9.1 341.7 2.2 17.1 3.0
Saginaw 23 77 0.01 9 75.8 0.0 140.0 1.7 0.0 0.3
Sherburne 35 66 0.0 5 81.7 2.3 221.5 2.1 4.5 0.9
St. Croix 29 81 0.01 4 79.9 0.5 68.9 1.6 1.0 0.4
Voyageurs/Kabnam 21 76 0.0 7 79.2 0.0 177.4 1.9 0.0 0.4

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.