Forecast Canadian fire danger indexes

Forecast for 13:00 2015-08-04

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 68 59 0.0 7 85.3 21.8 223.7 3.8 35.1 8.7
Badoura 70 53 0.0 7 89.0 40.8 277.0 6.7 59.6 18.2
Baudette 66 63 0.0 7 84.2 28.9 187.3 3.4 41.8 8.6
Bemidji 68 55 0.0 7 88.4 34.6 170.7 6.1 45.9 14.8
Bigstone 79 39 0.0 4 90.3 30.9 221.1 6.3 45.8 15.2
Brainerd 75 41 0.0 9 90.6 42.7 279.2 9.8 61.8 24.5
Camp Ripley/Little Falls 75 42 0.0 7 90.6 40.9 237.4 8.4 57.2 21.1
Carlos Avery 77 44 0.0 8 89.4 35.2 120.3 7.5 40.6 16.3
Cass Lake 70 53 0.0 8 88.8 32.6 184.4 6.7 45.2 15.7
Cutfoot 70 54 0.0 6 88.3 39.9 216.1 5.6 54.6 15.3
Detroit Lakes 72 48 0.0 6 88.7 29.0 308.0 6.0 47.0 14.7
Effie 67 53 0.0 6 83.6 22.7 291.6 2.9 38.0 7.1
Ely 64 58 0.14 7 67.7 27.4 261.5 1.0 43.5 2.6
Fernberg 63 59 0.01 7 84.2 25.3 289.8 3.4 41.5 8.6
Grand Portage 67 70 0.02 5 82.1 29.5 283.9 2.2 46.8 6.2
Hibbing 66 54 0.0 7 86.0 56.1 372.6 4.4 81.5 15.7
Hill City 70 55 0.0 8 86.5 36.0 318.7 5.0 56.1 14.1
Isabella 62 59 0.15 8 65.7 19.0 246.2 1.0 31.8 1.9
Itasca 70 54 0.0 7 88.7 34.6 226.3 6.4 50.1 16.0
Kelliher 68 62 0.0 7 84.5 25.0 362.8 3.5 42.6 9.0
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 67 61 0.0 6 85.9 34.9 187.1 4.0 47.6 10.8
Littlefork 66 57 0.01 6 83.7 21.4 152.0 2.9 31.6 6.4
Meander USFS 62 60 0.02 6 80.9 30.2 222.7 2.1 45.1 5.8
MN Valley 79 41 0.0 6 90.0 32.6 124.9 7.2 39.5 15.4
Moose Lake 72 49 0.0 9 89.0 36.3 220.6 7.6 51.4 18.6
Mora 74 45 0.0 9 89.2 32.4 164.9 7.8 43.4 17.3
Orr 65 61 0.09 6 70.1 21.8 329.6 1.0 37.4 2.2
Redstn 79 57 0.0 6 88.2 27.2 106.2 5.5 33.2 11.3
Rice Lake 73 51 0.0 9 88.6 41.9 267.7 7.3 60.2 19.5
Roseau 68 62 0.0 6 84.6 19.5 204.6 3.3 31.6 7.2
Saginaw 70 55 0.0 9 86.5 69.6 331.4 5.4 91.2 19.5
Seagull Lake 63 55 0.15 7 67.5 26.2 282.4 1.0 42.5 2.5
Sherburne 76 45 0.0 8 88.9 28.4 100.0 6.9 33.2 13.6
Skibo 65 56 0.09 8 74.3 27.9 311.0 1.4 45.6 4.0
St. Croix 75 49 0.0 9 87.4 20.5 153.3 6.1 30.7 11.9
Superior #2 62 61 0.07 6 73.9 34.8 222.9 1.2 50.1 3.5
Voyageurs/Kabnam 66 61 0.05 6 75.1 23.1 207.6 1.3 36.2 2.9

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.