Forecast Canadian fire danger indexes

Forecast for 13:00 2017-04-25

**Local agency personnel should contact MIFC Fire Intelligence if errors or omissions are observed.**

Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Agassiz 34 77 0.13 16 40.9 8.5 54.9 0.2 12.3 0.1
Albert Lea 58 69 0.0 7 87.0 16.9 21.5 4.9 16.5 7.0
Badoura 43 76 0.21 10 47.1 9.4 11.1 0.3 9.0 0.1
Baudette 34 74 0.37 15 37.5 18.6 75.5 0.1 23.0 0.1
Bemidji 38 81 0.36 11 37.2 8.9 30.6 0.1 10.3 0.0
Bigstone 45 68 0.0 18 85.1 18.3 85.7 9.1 23.8 14.2
Brainerd 51 65 0.04 11 80.8 15.7 28.8 3.0 15.5 4.1
Camp Ripley/Little Falls 52 68 0.03 9 82.4 12.5 29.4 3.1 12.5 3.8
Carlos Avery 61 64 0.02 5 84.2 15.7 22.3 2.8 15.4 3.8
Cass Lake 39 80 0.26 12 40.8 7.5 36.4 0.1 9.9 0.1
Cutfoot 41 79 0.29 10 36.6 5.9 33.5 0.0 8.2 0.0
Detroit Lakes 40 78 0.19 13 50.4 12.8 42.9 0.5 14.7 0.4
Effie 40 76 0.37 11 37.2 9.8 48.6 0.0 13.0 0.0
Ely 49 70 0.16 8 55.5 5.2 35.3 0.6 7.6 0.3
Fernberg 49 67 0.19 8 54.7 14.4 60.8 0.5 18.1 0.4
Grand Portage 50 68 0.13 7 58.4 6.0 9.8 0.6 5.8 0.3
Hibbing 48 72 0.09 10 60.5 5.0 11.9 1.0 5.0 0.4
Hill City 48 74 0.07 10 62.1 7.6 10.0 1.1 7.4 0.5
Isabella 51 64 0.19 6 49.5 2.9 7.0 0.2 2.9 0.1
Itasca 38 81 0.33 11 27.1 2.8 20.4 0.0 4.2 0.0
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
Kelliher 38 75 0.34 11 37.3 13.4 61.6 0.0 17.3 0.0
Kittson 34 75 0.21 16 45.9 18.7 79.0 0.3 23.5 0.3
Litchfield 54 72 0.0 10 85.8 14.6 22.5 5.4 14.4 7.1
Littlefork 37 67 0.69 12 36.3 11.8 59.0 0.0 15.7 0.0
Meander USFS 44 76 0.22 8 42.3 6.2 49.7 0.1 9.5 0.1
MNS #1 55 65 0.07 9 74.9 10.0 18.7 1.5 9.9 0.9
MN Valley 60 64 0.02 5 86.6 18.9 23.4 4.0 18.6 6.1
Moose Lake 56 62 0.07 6 70.8 9.4 21.5 1.1 9.4 0.6
Mora 57 64 0.01 8 86.7 14.4 20.6 5.0 14.2 6.6
New Ulm Municipal Airport 54 72 0.0 8 85.6 16.9 21.3 4.3 16.6 6.3
Orr 42 74 0.28 10 43.3 10.7 53.3 0.1 14.3 0.1
Redstn 43 75 0.0 15 83.9 15.3 81.4 6.1 20.8 9.7
Rice Lake 54 66 0.09 8 68.7 10.4 18.2 1.2 10.3 0.7
Rochester 65 54 0.0 7 88.9 16.2 22.6 6.6 15.9 9.0
Roseau 34 76 0.25 16 42.0 16.9 81.8 0.2 22.3 0.2
Saginaw 55 61 0.07 6 66.7 7.2 12.1 0.9 7.0 0.5
Seagull Lake 50 61 0.19 5 51.9 4.7 28.9 0.3 6.7 0.2
Sherburne 58 64 0.01 7 86.8 14.3 21.7 4.8 14.0 6.3
Skibo 52 68 0.15 6 53.6 3.9 25.8 0.4 5.7 0.2
Stanton Airfield 61 61 0.0 5 87.8 19.0 34.0 4.6 18.8 7.2
Station °F RH P24I Wind FFMC DMC DC ISI BUI FWI
St. Croix 60 56 0.01 3 87.8 17.7 47.9 3.9 18.4 6.0
Superior #1 51 63 0.17 5 52.8 3.6 8.3 0.3 3.5 0.1
Superior #2 46 73 0.13 8 53.0 5.8 22.5 0.5 7.0 0.2
Superior #3 46 73 0.2 8 45.9 5.1 26.1 0.2 6.9 0.1
Voyageurs/Kabnam 37 70 0.63 12 34.7 11.8 54.3 0.0 15.3 0.0

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.