Forecast Canadian fire danger indexes

Forecast for 13:00 2014-10-01

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 64 72 0.04 17 76.3 13.8 289.4 3.3 24.7 6.1
Badoura 59 79 0.03 10 75.8 25.6 346.9 1.8 43.3 5.0
Baudette 60 80 0.02 13 73.1 8.4 219.0 2.1 15.3 2.6
Bemidji 60 75 0.02 13 78.3 18.0 266.2 2.7 30.7 5.8
Bigstone 70 60 0.04 9 82.1 24.5 198.2 3.0 37.5 7.4
Brainerd 60 83 0.06 13 64.3 16.8 118.2 1.4 24.8 2.4
Camp Ripley/Little Falls 59 90 0.07 10 58.5 18.0 109.8 0.9 25.5 0.9
Carlos Avery 56 96 0.15 10 43.1 22.8 222.8 0.1 36.4 0.2
Cass Lake 61 77 0.03 11 75.5 21.2 364.8 1.9 37.0 4.6
Cutfoot 58 82 0.02 11 75.2 20.5 358.0 2.0 35.9 4.7
Detroit Lakes 64 68 0.03 12 81.9 28.4 310.1 3.8 46.3 10.3
Effie 58 76 0.02 11 77.0 16.2 285.8 2.2 28.4 4.5
Ely 54 79 0.0 13 74.5 19.1 255.8 2.1 32.2 4.7
Fernberg 53 78 0.0 11 71.5 14.0 244.9 1.7 24.4 2.9
Grand Portage 53 76 0.0 10 73.1 10.7 186.0 1.5 18.7 2.0
Hibbing 54 84 0.03 11 71.2 15.5 280.1 1.6 27.3 3.1
Hill City 56 85 0.04 11 64.7 14.5 269.2 1.3 25.6 2.2
Isabella 50 84 0.0 11 61.7 13.0 204.6 1.1 22.4 1.4
Itasca 61 72 0.03 13 77.8 23.5 333.4 2.6 40.0 6.7
Kelliher 59 81 0.02 11 77.1 13.8 242.9 2.2 24.1 4.0
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 64 75 0.05 18 72.4 11.1 285.7 3.0 20.3 4.9
Litchfield 62 85 0.09 9 64.4 19.3 234.3 1.1 32.0 2.0
Littlefork 59 76 0.02 11 74.5 11.8 263.6 1.9 21.2 3.0
Meander USFS 54 83 0.01 13 69.4 13.1 347.9 1.7 23.9 3.0
MN Valley 60 92 0.17 9 45.4 17.6 355.6 0.2 31.2 0.2
Moose Lake 54 89 0.06 10 58.5 13.5 200.6 0.9 23.1 0.8
Mora 54 96 0.09 10 45.3 13.8 89.3 0.2 19.9 0.2
Orr 56 78 0.01 12 73.8 17.1 363.3 2.0 30.6 4.2
Redstn 67 73 0.04 7 76.4 33.1 331.2 1.5 52.9 4.6
Rice Lake 55 88 0.05 11 63.1 17.0 104.1 1.1 24.1 1.6
Roseau 65 75 0.05 17 72.9 9.9 324.2 2.8 18.5 4.3
Saginaw 54 85 0.04 10 61.5 12.3 217.8 1.0 21.6 1.0
Seagull Lake 54 72 0.0 11 76.1 12.8 191.2 2.1 21.9 3.4
Sherburne 58 94 0.1 10 54.6 26.7 163.3 0.6 37.9 0.9
St. Croix 54 91 0.08 10 56.1 16.5 89.7 0.7 22.6 0.7
Voyageurs/Kabnam 57 78 0.01 11 68.3 10.0 233.4 1.5 18.1 1.9

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.