Updated 18:00 2018-05-22

**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 76 48 0.0 7 90.5 30.7 120.4 8.1 37.5 16.5
Badoura 70 58 0.0 4 88.4 38.0 119.5 4.7 42.3 11.5
Baudette 77 34 0.0 5 92.6 27.2 86.3 9.3 30.4 16.4
Bemidji 73 53 0.0 7 87.8 29.2 96.4 5.5 33.2 11.4
Bigstone 78 52 0.0 6 87.3 77.8 206.5 4.7 80.1 16.4
Brainerd 71 54 0.0 5 88.4 81.9 168.3 5.1 81.7 17.7
Camp Ripley/Little Falls 70 60 0.01 4 88.0 89.9 180.2 4.5 89.7 17.0
Carlos Avery 74 55 0.0 3 88.2 52.1 159.3 4.2 57.3 12.5
Cass Lake 69 59 0.0 7 88.3 40.9 127.0 5.9 45.3 14.3
Cutfoot 71 54 0.0 3 89.9 73.7 153.0 5.4 73.5 17.4
Detroit Lakes 70 61 0.0 8 88.0 58.1 163.2 6.2 61.5 17.5
Effie 74 48 0.0 5 90.3 38.7 89.3 6.7 38.7 14.5
Ely 76 28 0.0 6 92.3 37.7 105.5 9.7 39.8 19.4
Fernberg 77 22 0.0 4 93.5 33.5 94.5 9.7 35.5 18.3
Grand Portage 75 32 0.0 8 92.3 45.5 111.3 11.4 45.5 23.3
Hibbing 74 48 0.0 8 89.9 38.7 136.2 8.1 45.3 18.1
Hill City 70 58 0.0 6 88.4 59.8 158.9 5.5 61.6 16.0
Isabella 75 31 0.0 4 92.7 50.3 120.7 8.7 50.3 20.2
Itasca 75 51 0.0 5 89.6 30.1 110.6 6.1 35.8 12.9
Kelliher 73 49 0.0 3 89.8 22.7 81.8 5.3 26.8 9.8
Station °F RH Prec Wind FFMC DMC DC ISI BUI FWI
Kittson 74 52 0.0 8 89.7 28.0 114.8 7.9 34.8 15.5
Litchfield 70 67 0.05 4 60.4 46.2 196.6 0.6 58.2 1.5
Littlefork 75 34 0.0 4 91.5 22.7 50.2 7.3 22.6 11.7
Meander USFS 78 25 0.0 3 93.0 36.5 82.5 8.4 36.4 16.6
MNS #1 69 63 0.22 4 61.3 43.9 130.6 0.6 47.7 1.0
MN Valley 71 65 0.0 4 85.0 48.3 159.1 2.9 54.9 9.0
Moose Lake 72 54 0.01 4 89.2 68.5 155.3 5.3 68.4 16.5
Mora 71 59 0.01 4 88.1 68.5 166.5 4.5 68.5 14.6
New Ulm Municipal Airport 71 61 0.0 3 65.8 22.5 90.7 0.7 27.8 0.8
Orr 77 31 0.0 4 91.8 37.9 67.7 7.7 37.7 15.9
Redstn 79 45 0.01 5 85.4 33.5 109.0 3.3 37.9 8.0
Rice Lake 71 54 0.0 7 89.0 72.7 159.2 6.6 72.6 20.0
Rochester 64 77 0.05 0 50.3 18.3 58.5 0.2 20.5 0.2
Roseau 75 44 0.0 8 90.8 26.4 88.3 9.2 30.2 16.2
Saginaw 74 51 0.0 4 90.0 55.5 151.2 5.9 57.9 16.3
Seagull Lake 79 19 0.0 5 94.4 37.2 110.5 11.9 40.4 22.6
Sherburne 71 59 0.02 5 87.8 77.6 169.9 4.7 77.5 16.2
Skibo 73 44 0.0 2 91.2 57.1 136.6 6.0 57.1 16.4
Stanton Airfield 68 66 0.0 0 86.2 52.5 152.9 2.5 56.5 8.0
St. Croix 70 63 0.0 1 88.3 91.8 176.9 3.6 91.5 14.5
Station °F RH Prec Wind FFMC DMC DC ISI BUI FWI
Superior #2 77 39 0.0 3 91.8 52.0 134.4 7.1 52.9 17.9
Voyageurs/Kabnam 76 32 0.0 0 90.9 23.3 53.7 4.9 23.3 8.5

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.