Updated 18:00 2018-05-25

**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 84 41 0.32 9 77.6 18.2 120.8 1.9 26.4 3.6
Badoura 85 38 0.04 8 89.5 50.3 142.0 7.6 53.4 18.9
Baudette 83 41 0.02 8 90.1 38.9 108.1 8.3 41.0 17.5
Bigstone 89 32 0.0 10 91.4 33.4 186.4 11.8 46.1 24.0
Brainerd 85 38 0.0 9 88.9 52.1 168.6 7.6 58.8 19.9
Camp Ripley/Little Falls 88 36 0.02 9 89.8 50.8 159.1 8.6 56.5 21.3
Carlos Avery 85 54 0.13 7 79.9 49.1 177.7 2.0 58.1 6.7
Cass Lake 85 37 0.08 7 86.9 47.5 148.8 4.8 52.8 13.2
Cutfoot 86 40 0.0 4 90.6 86.3 175.5 6.5 86.1 21.7
Detroit Lakes 87 31 0.0 10 92.4 71.4 185.8 13.6 72.8 33.1
Effie 83 41 0.09 10 83.8 30.2 103.1 4.0 34.9 9.0
Ely 82 41 0.05 14 86.0 43.1 126.0 7.5 46.5 17.4
Fernberg 86 39 0.0 8 90.2 44.5 115.7 8.4 45.4 18.7
Hibbing 82 45 0.22 13 78.8 21.6 137.8 2.9 31.0 6.3
Hill City 84 40 0.11 7 81.1 25.4 112.2 2.3 32.4 5.1
Isabella 82 42 0.0 6 89.4 60.1 141.2 6.4 60.1 17.7
Itasca 87 36 0.0 5 91.0 40.6 132.2 7.4 45.9 17.1
Kelliher 82 46 0.02 8 89.3 33.3 103.4 7.4 36.9 15.2
Kittson 85 38 0.0 8 90.8 41.2 137.4 9.2 47.1 20.3
Litchfield 88 36 0.03 8 89.9 30.8 202.5 8.1 44.6 18.0
Station °F RH Prec Wind FFMC DMC DC ISI BUI FWI
Littlefork 82 42 0.07 8 83.4 16.7 43.2 3.3 17.0 4.9
Meander USFS 84 39 0.24 7 76.2 23.0 89.6 1.5 28.0 2.8
MNS #1 83 39 0.0 8 85.0 21.7 24.2 4.0 21.3 6.7
MN Valley 85 54 0.41 6 71.7 31.8 159.5 1.1 42.4 2.7
Moose Lake 84 50 0.08 8 80.0 33.2 120.1 2.2 39.3 5.6
Mora 84 52 0.0 6 84.4 36.9 139.6 3.2 44.4 8.6
New Ulm Municipal Airport 86 35 0.06 0 84.1 26.1 108.0 1.9 32.5 4.2
Orr 84 41 0.23 6 75.9 20.4 70.1 1.3 23.6 2.0
Redstn 89 31 0.0 7 92.6 46.1 131.8 10.9 49.2 23.4
Rice Lake 84 50 0.03 9 84.2 36.9 102.7 3.9 38.9 9.4
Rochester 84 52 0.0 13 89.0 29.3 80.8 11.4 30.7 19.2
Roseau 81 44 0.0 10 88.7 35.6 110.2 8.0 39.4 16.7
Saginaw 85 47 0.0 6 84.5 38.9 157.7 3.2 48.1 9.0
Seagull Lake 84 44 0.0 8 89.8 50.0 132.3 8.0 51.4 19.2
Sherburne 89 36 0.0 9 91.7 89.7 192.4 11.3 89.6 32.4
Skibo 86 36 0.0 6 88.1 53.5 154.2 5.3 57.3 15.0
Stanton Airfield 81 63 1.8 8 62.8 24.1 78.0 0.9 27.2 1.0
St. Croix 85 54 0.04 5 82.3 51.1 160.6 2.2 56.9 7.2
Superior #2 84 42 0.02 5 79.9 37.9 142.8 1.7 45.6 4.8
Voyageurs/Kabnam 83 39 0.15 8 79.0 16.7 61.3 2.0 19.9 3.1

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.

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.