Forecast Canadian fire danger indexes

Forecast for 13:00 2015-07-06

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 64 59 0.14 20 60.6 23.8 331.3 2.1 40.3 5.4
Badoura 70 52 0.78 16 67.3 26.3 182.5 2.1 38.7 5.4
Baudette 64 61 0.22 16 60.2 8.8 93.4 1.5 14.2 1.5
Bemidji 66 54 0.61 17 63.7 13.0 123.6 2.0 20.5 3.1
Bigstone 68 68 2.11 19 58.9 16.8 175.5 1.8 27.1 3.4
Brainerd 70 58 1.99 15 62.3 24.8 127.3 1.5 33.4 3.3
Camp Ripley/Little Falls 67 69 2.86 12 52.2 19.5 68.5 0.6 22.8 0.6
Carlos Avery 67 87 1.59 15 38.6 8.9 93.3 0.1 14.4 0.1
Cass Lake 69 60 0.96 15 62.4 17.4 99.4 1.6 24.2 2.7
Cutfoot 69 60 1.05 12 60.1 15.4 108.0 1.1 22.7 1.2
Detroit Lakes 68 54 0.17 20 75.1 33.3 271.4 3.8 51.0 10.8
Effie 69 61 0.47 11 61.9 38.9 249.0 1.1 56.0 3.6
Ely 66 74 1.8 8 45.6 10.8 95.5 0.2 16.9 0.1
Fernberg 65 75 1.6 8 44.4 10.2 73.6 0.1 15.1 0.1
Grand Portage 62 83 0.97 10 37.8 5.7 77.0 0.1 9.6 0.0
Hibbing 67 68 1.48 12 53.3 10.7 124.1 0.6 17.7 0.5
Hill City 67 65 1.46 13 55.8 11.3 123.6 0.8 18.4 0.7
Isabella 65 77 1.91 10 44.0 10.8 53.1 0.2 14.3 0.1
Itasca 67 52 0.58 19 67.2 22.6 191.0 2.6 34.9 6.1
Kelliher 67 50 0.26 16 67.9 15.8 225.1 2.2 26.8 4.2
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 62 57 0.45 20 54.2 11.6 117.2 1.3 18.6 1.4
Litchfield 67 81 2.57 17 46.3 9.9 55.4 0.4 13.7 0.3
Littlefork 69 62 0.16 12 67.8 17.1 127.7 1.5 25.6 2.6
Meander USFS 65 75 2.89 9 43.9 9.3 10.7 0.1 9.0 0.1
MN Valley 69 88 1.35 14 38.8 9.2 96.3 0.1 14.8 0.1
Moose Lake 67 72 2.8 12 50.3 9.1 54.5 0.4 12.8 0.3
Mora 64 83 3.56 14 39.9 8.8 25.7 0.1 9.5 0.1
Orr 67 67 1.11 9 52.1 11.3 135.7 0.4 18.8 0.4
Redstn 70 70 2.41 19 57.2 10.4 37.2 1.6 12.2 1.3
Rice Lake 69 65 2.92 13 56.1 12.9 56.7 0.8 16.4 0.7
Roseau 65 59 0.29 17 55.1 20.3 187.7 1.1 32.0 2.1
Saginaw 67 70 2.29 12 52.1 11.2 85.1 0.5 16.8 0.4
Seagull Lake 65 79 1.61 8 41.4 10.1 102.1 0.1 16.2 0.1
Sherburne 67 79 3.26 16 47.5 14.1 23.9 0.4 13.9 0.3
Skibo 65 73 1.63 10 48.1 10.2 88.4 0.3 15.8 0.2
St. Croix 65 73 2.95 12 47.8 11.2 36.4 0.3 12.6 0.2
Superior #2 65 73 2.06 9 46.2 10.3 53.6 0.2 13.9 0.1
Voyageurs/Kabnam 67 68 0.41 11 58.1 12.7 100.0 0.9 19.2 0.8

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.