Updated 18:00 2018-11-15

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

Station °F RH Prec Wind FFMC DMC DC ISI BUI FWI
Agassiz 33 89 0.03 14 74.7 0.8 235.4 2.3 1.6 0.7
Badoura 41 63 0.12 2 53.5 1.5 136.6 0.3 2.9 0.1
Baudette 37 81 0.1 3 54.3 0.3 247.0 0.3 0.6 0.1
Bemidji 38 72 0.0 5 81.6 1.2 132.6 2.0 2.3 0.6
Bigstone 53 43 0.0 15 86.5 3.9 179.9 8.8 7.4 7.9
Brainerd 39 61 0.0 9 82.8 3.1 95.5 3.3 5.7 2.4
Camp Ripley/Little Falls 39 63 0.0 9 81.1 1.8 30.8 2.7 3.1 1.0
Carlos Avery 40 52 0.0 8 83.5 2.5 49.1 3.3 4.4 2.1
Cass Lake 40 65 0.0 4 81.1 1.2 73.7 1.8 2.3 0.6
Cutfoot 39 63 0.23 4 42.1 0.2 97.7 0.1 0.4 0.0
Detroit Lakes 37 79 0.0 9 81.6 5.1 173.3 2.8 9.5 2.7
Effie 35 69 0.0 5 82.3 1.9 4.8 2.2 1.9 0.7
Ely 36 59 0.0 7 82.3 3.1 91.0 2.6 5.7 1.7
Fernberg 37 56 0.05 3 72.6 0.8 41.0 0.9 1.5 0.3
Grand Portage 34 70 0.01 6 76.4 0.1 0.3 1.4 0.0 0.3
Hibbing 34 66 0.0 5 82.1 1.6 122.7 2.2 3.1 0.8
Hill City 35 64 0.02 6 81.4 0.4 1.7 2.2 0.5 0.5
Isabella 38 54 0.02 4 76.8 0.3 0.6 1.2 0.0 0.2
Itasca 43 60 0.14 6 57.8 3.0 81.8 0.6 5.5 0.3
Kelliher 34 83 0.05 3 65.2 1.2 32.8 0.7 2.2 0.2
Station °F RH Prec Wind FFMC DMC DC ISI BUI FWI
Kittson 30 87 0.0 13 78.9 0.7 280.2 2.9 1.4 0.8
Litchfield 44 58 0.0 10 82.9 1.3 177.7 3.6 2.6 1.7
Littlefork 35 73 0.0 2 82.1 0.7 117.1 1.7 1.4 0.5
Meander USFS 34 66 0.06 3 66.7 0.2 26.9 0.7 0.4 0.2
MN Valley 40 52 0.0 8 83.8 2.7 41.3 3.4 4.6 2.2
Moose Lake 36 56 0.0 7 81.7 0.4 0.4 2.4 0.0 0.5
Mora 37 58 0.0 11 82.2 1.0 45.7 3.6 1.9 1.4
New Ulm Municipal Airport 42 56 0.0 9 82.6 5.9 59.3 3.2 9.4 3.2
Orr 37 64 0.02 3 82.7 9.3 93.4 2.0 14.9 2.5
Redstn 52 48 0.0 11 86.0 4.1 44.5 5.9 6.7 5.2
Rice Lake 37 59 0.0 8 81.8 0.3 19.7 2.7 0.6 0.7
Rochester 41 45 0.0 17 84.2 0.7 1.1 7.7 0.5 3.1
Roseau 36 81 0.0 10 80.5 2.0 298.7 2.7 3.9 1.2
Saginaw 34 59 0.01 5 81.6 2.3 26.6 2.0 3.8 0.8
Seagull Lake 42 49 0.0 5 79.9 0.5 20.4 1.7 0.9 0.4
Sherburne 40 58 0.0 8 82.8 2.5 105.8 3.0 4.7 1.8
Skibo 40 49 0.04 3 77.4 0.9 37.7 1.1 1.7 0.3
Stanton Airfield 40 54 0.0 15 83.4 2.9 134.9 5.7 5.5 4.6
St. Croix 38 51 0.0 6 83.0 1.6 64.6 2.6 3.0 0.9

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.

IndexLowModerateHighVery HighExtreme

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.