Forecast Canadian fire danger indexes

Forecast for 13:00 2014-09-16

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 67 47 0.0 8 87.3 20.9 272.5 5.7 35.0 12.0
Badoura 65 47 0.0 9 88.0 27.0 311.7 6.8 44.4 15.8
Baudette 65 49 0.0 8 86.5 16.1 275.4 4.9 28.1 9.4
Bemidji 65 45 0.0 10 88.0 23.7 240.4 7.4 38.0 15.5
Bigstone 65 48 0.0 7 87.4 16.6 133.7 5.3 25.3 9.5
Brainerd 63 43 0.0 10 88.0 17.1 59.1 7.5 19.8 11.1
Camp Ripley/Little Falls 61 47 0.0 8 87.6 14.4 43.0 5.9 15.7 8.0
Carlos Avery 61 46 0.0 9 87.5 15.1 155.9 6.3 24.3 10.7
Cass Lake 64 46 0.0 8 87.6 22.1 325.2 5.7 37.8 12.7
Cutfoot 63 52 0.0 7 86.5 23.3 329.7 4.8 39.6 11.2
Detroit Lakes 65 48 0.0 9 88.6 24.0 258.5 7.4 39.0 15.7
Effie 63 51 0.0 7 86.4 15.9 272.1 4.5 27.8 8.7
Ely 62 48 0.0 8 85.5 12.5 198.3 4.4 21.5 7.3
Fernberg 61 47 0.0 8 81.8 6.1 192.1 2.7 11.2 2.9
Grand Portage 60 50 0.0 6 81.8 6.7 149.7 2.2 12.1 2.3
Hibbing 63 47 0.0 10 86.7 13.2 270.4 6.1 23.5 10.3
Hill City 62 50 0.0 7 86.8 14.6 244.4 5.0 25.4 9.0
Isabella 60 48 0.0 8 85.9 9.6 164.3 4.5 16.7 6.6
Itasca 66 46 0.0 9 87.9 24.2 281.1 6.6 39.9 14.6
Kelliher 65 51 0.0 8 86.5 13.9 253.3 5.1 24.4 9.0
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kittson 67 47 0.0 7 84.6 18.7 279.6 3.5 32.0 7.6
Litchfield 63 43 0.0 8 86.2 13.8 171.0 4.8 22.9 8.2
Littlefork 63 53 0.0 6 84.1 12.7 241.5 3.0 22.5 5.2
Meander USFS 61 53 0.0 7 81.0 12.9 316.4 2.2 23.5 3.9
MN Valley 63 44 0.0 7 85.6 21.4 312.0 4.2 36.6 9.6
Moose Lake 63 47 0.0 7 87.3 12.2 163.9 5.4 20.5 8.6
Mora 61 46 0.0 9 87.3 13.5 28.2 6.0 13.4 7.5
Orr 63 52 0.0 6 82.8 14.6 323.4 2.5 26.2 4.9
Redstn 63 56 0.0 11 78.7 9.6 247.1 2.5 17.5 3.7
Rice Lake 63 48 0.0 7 87.0 13.5 48.6 5.1 15.9 7.1
Roseau 66 51 0.0 7 85.1 21.7 400.8 3.9 38.2 9.3
Saginaw 63 48 0.0 9 86.9 14.4 213.5 5.8 24.6 10.1
Seagull Lake 60 48 0.0 7 84.9 10.9 157.5 3.6 18.6 5.7
Sherburne 62 46 0.0 8 87.5 13.8 86.3 5.8 19.7 8.9
St. Croix 63 45 0.0 9 87.8 13.3 28.1 6.6 13.3 8.2
Voyageurs/Kabnam 62 55 0.0 5 82.8 13.6 227.2 2.3 23.7 4.2

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.