Forecast Canadian fire danger indexes

Forecast for 12:00 2014-12-22

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 34 90 0.02 9 62.2 16.5 311.1 1.0 29.2 1.4
Badoura 34 92 0.08 9 49.0 15.5 404.3 0.3 28.3 0.3
Baudette 34 90 0.02 8 69.2 1.4 165.1 1.2 2.8 0.4
Bemidji 34 90 0.02 9 73.6 12.1 297.5 1.5 22.0 2.2
Bigstone 36 93 0.06 11 61.3 21.2 280.7 1.0 35.7 2.1
Brainerd 34 92 0.06 11 47.7 2.8 154.5 0.3 5.3 0.1
Camp Ripley/Little Falls 34 93 0.06 9 39.6 2.0 154.3 0.1 4.0 0.0
Carlos Avery 35 97 0.24 12 23.8 5.4 242.7 0.0 10.3 0.0
Cass Lake 35 89 0.03 9 69.3 14.0 384.7 1.2 25.7 2.0
Cutfoot 35 94 0.03 8 51.1 2.7 328.0 0.4 5.3 0.2
Detroit Lakes 35 86 0.04 12 67.0 14.0 362.4 1.5 25.5 2.5
Effie 36 85 0.03 8 69.4 7.5 309.6 1.2 14.1 0.9
Ely 34 83 0.04 8 66.0 4.6 283.1 1.1 8.9 0.6
Fernberg 34 85 0.04 8 48.7 2.4 252.7 0.3 4.8 0.1
Grand Portage 35 93 0.17 8 22.5 0.0 145.7 0.0 0.1 0.0
Hibbing 34 87 0.04 8 62.4 2.1 255.2 0.9 4.2 0.4
Hill City 34 90 0.04 9 60.4 4.0 247.7 0.9 7.7 0.5
Isabella 33 93 0.09 9 37.4 0.0 176.3 0.0 0.0 0.0
Itasca 34 90 0.03 8 68.5 26.0 404.0 1.1 44.8 3.0
Kelliher 35 92 0.02 8 71.0 5.3 232.0 1.2 10.1 0.7
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 34 89 0.01 9 72.4 17.8 325.4 1.4 31.4 2.9
Litchfield 36 95 0.05 11 40.5 6.1 266.7 0.1 11.6 0.1
Littlefork 36 87 0.02 7 68.2 1.0 265.2 1.0 2.1 0.3
Meander USFS 34 85 0.03 7 53.2 0.0 276.3 0.4 0.1 0.1
MN Valley 36 93 0.03 11 69.7 43.2 250.0 1.5 60.4 5.1
Moose Lake 35 92 0.06 9 47.5 0.0 173.0 0.2 0.1 0.1
Mora 34 92 0.08 11 41.3 1.4 108.3 0.1 2.7 0.0
Orr 34 84 0.03 8 66.1 2.8 343.9 1.0 5.6 0.5
Redstn 36 95 0.07 12 22.2 8.9 316.0 0.0 16.7 0.0
Rice Lake 34 92 0.18 11 17.7 0.0 106.6 0.0 0.0 0.0
Roseau 34 87 0.02 9 73.7 12.4 341.7 1.5 22.8 2.3
Saginaw 34 92 0.05 9 48.1 0.0 154.3 0.3 0.0 0.1
Sherburne 35 96 0.06 11 38.5 4.5 221.0 0.1 8.6 0.0
St. Croix 36 90 0.14 10 38.0 0.2 68.5 0.1 0.4 0.0
Voyageurs/Kabnam 34 90 0.02 7 59.4 0.0 200.7 0.7 0.1 0.1

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.