Forecast Canadian fire danger indexes

Forecast for 12:00 2014-11-28

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 15 75 0.13 8 48.5 12.2 304.1 0.3 22.2 0.3
Badoura 17 76 0.14 6 47.0 15.6 393.8 0.2 28.4 0.2
Baudette 13 74 0.07 6 59.0 2.5 174.7 0.6 4.8 0.3
Bemidji 15 76 0.12 6 50.4 10.7 291.5 0.3 19.6 0.3
Bigstone 27 77 0.05 6 68.6 21.3 277.7 1.0 35.7 2.0
Brainerd 18 81 0.15 7 45.1 3.4 155.8 0.1 6.4 0.1
Camp Ripley/Little Falls 22 77 0.16 7 44.6 3.1 153.6 0.1 5.8 0.1
Carlos Avery 24 71 0.13 8 48.4 16.4 259.3 0.3 28.4 0.3
Cass Lake 15 75 0.11 6 53.5 10.5 383.6 0.4 19.6 0.4
Cutfoot 15 78 0.08 6 57.7 3.6 333.0 0.6 7.0 0.3
Detroit Lakes 18 81 0.15 8 44.9 9.7 351.7 0.2 18.1 0.1
Effie 15 78 0.05 6 68.3 8.5 308.7 1.0 15.9 0.8
Ely 15 73 0.01 4 77.8 8.7 290.2 1.3 16.2 1.3
Fernberg 14 73 0.01 4 73.1 5.4 258.7 0.9 10.3 0.6
Grand Portage 17 73 0.01 7 68.9 4.5 191.2 1.0 8.5 0.6
Hibbing 15 73 0.04 7 70.4 4.3 261.6 1.1 8.3 0.6
Hill City 15 80 0.08 7 59.5 5.4 252.7 0.7 10.3 0.4
Isabella 14 78 0.01 6 55.5 0.0 175.6 0.5 0.0 0.1
Itasca 17 72 0.15 6 46.2 18.1 392.2 0.2 32.4 0.2
Kelliher 15 74 0.09 6 57.9 5.1 231.2 0.6 9.7 0.4
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 15 73 0.12 8 50.7 13.1 319.3 0.3 23.8 0.3
Litchfield 26 79 0.07 8 56.3 18.6 299.0 0.6 32.2 0.7
Littlefork 15 73 0.02 4 79.2 4.8 276.0 1.5 9.2 0.9
Meander USFS 14 77 0.01 4 61.6 0.1 304.9 0.6 0.2 0.1
MN Valley 27 74 0.07 9 64.4 40.1 246.1 1.1 57.0 3.5
Moose Lake 17 79 0.06 6 59.6 5.0 200.2 0.7 9.4 0.4
Mora 21 77 0.16 8 42.4 7.0 125.6 0.1 12.2 0.1
Orr 14 77 0.02 4 79.1 6.7 349.3 1.5 12.8 1.2
Redstn 31 90 0.02 7 74.3 25.0 387.3 1.3 43.1 3.4
Rice Lake 17 79 0.08 7 52.2 0.5 122.7 0.4 1.0 0.1
Roseau 15 73 0.07 8 62.7 11.5 341.4 0.9 21.2 0.9
Saginaw 14 81 0.05 7 63.7 2.2 172.9 0.9 4.3 0.4
Sherburne 23 75 0.13 8 46.6 16.3 238.2 0.2 27.8 0.2
St. Croix 19 77 0.07 7 58.7 9.3 96.6 0.7 15.0 0.5
Voyageurs/Kabnam 14 76 0.01 4 67.8 0.0 218.5 0.8 0.0 0.2

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.