The following is FWI Data for the DW8463

This information is gathered from a DW8463 since 5/9/2016
Located at Lat: 90.0000  Long: 44.3021  Alt: 978 ft ASL in [Zumbrota, MN]
Always check official source's when comparing information obtained from the internet.


as of 6/23/2018 12:02:28 PM

"Only you can prevent wildfires"


0 consecuative days of rain (0.00 in)

Drought days: 1


Monthly Average CBI
BKDI
DF
3.7 - LW
0 - N/A
7
GFDC
SFDC
FFDC
57 kw/m2 - MD
729 kw/m2 - HI
0 kw/m2 - LW


Fire Weather Analysis Graphs

The graphs below are calculated using recent weather data observations
and offer an overview of fire weather conditions for the Saginaw area

Updated daily at 12:02 hrs ST except for the CBI which is updated every 15 minutes after the initial midday reading.


DateTemp
ºF
Humidity
%
Wind Speed
mph
Rainfall
in
FFMCDMCDCISIBUIFWIFWI DCGFDIDFBKDICBICBI DCFMI
6/23/201877.4641.40.0067.77410.6100.4LOW21.4707.7LOW19.7
6/22/201874.9700.10.0142.34330.160.0LOW17.5704.5LOW21.5
6/21/201865.1884.10.5319.01260.020.0LOW12.910-0.7LOW27.4
6/20/201866.1963.70.1211.72400.030.0LOW10.730-1.5LOW29.3
6/19/201862.2953.40.498.73360.050.0LOW7.910-1.6LOW29.6
6/18/201873.3950.00.9710.46490.090.0LOW11.400-1.3LOW28.0
6/17/201888.0701.80.0056.113860.4190.4LOW22.8705.3LOW19.7
6/16/201873.0983.40.8516.610770.0150.0LOW13.500-1.5LOW28.8
6/15/201885.4662.90.0085.4251102.8326.1MODERATE23.6507.2LOW19.1
6/14/201871.4664.30.0083.0211012.3284.6MODERATE20.0506.2LOW21.0
6/13/201874.9375.70.0078.818941.6242.7LOW32.97041.1LOW13.3
6/12/201874.1830.00.0140.712860.0180.0LOW12.7700.4LOW24.9
6/11/201868.8870.00.0129.511790.0160.0LOW9.970-0.5LOW26.6
6/10/201865.6902.21.4421.110720.0150.0LOW9.000-1.0LOW27.8
6/9/201875.9784.40.0071.9261390.9361.7LOW17.9701.7LOW23.4
6/8/201867.0833.20.1156.6241310.4330.5LOW11.4300.1LOW25.9
6/7/201874.9620.10.0074.5291240.8371.4LOW15.3708.8LOW19.5
6/6/201871.2760.10.1061.9261160.5330.6LOW11.8302.1LOW23.6
6/5/201873.8630.40.0087.8291093.2357.3MODERATE15.1508.1LOW19.9
6/4/201879.0385.90.0089.1261016.03111.9MODERATE29.75039.7LOW13.0

Statistic data for 2018
Rain Days: 55   Drought Days: 119
Stat FFMC DMC DC ISI BUI CBI FWI BKDI DF
HIGHS 91.3
5/7/2018
33
5/7/2018
219
5/8/2018
10.0
4/27/2018
37
6/7/2018
57.2
5/7/2018
15.7
6/22/2018
0
6/23/2018
7
6/23/2018
LOWS 7.3
4/14/2018
0
4/16/2018
1
4/15/2018
0.0
6/21/2018
0
4/16/2018
-2.7
1/11/2018
0.0
6/23/2018
0
6/23/2018
0
6/18/2018

Statistic data since records began on 5/9/2016
Stat FFMC DMC DC ISI BUI CBI FWI BKDI DF
HIGHS 92.7
6/4/2017
70
5/7/2018
296
10/1/2017
10.0
4/27/2018
70
6/10/2017
67.6
6/4/2017
22.5
6/10/2017
56
5/13/2016
8
5/24/2016
LOWS 4.2
9/7/2016
0
4/16/2018
0
3/15/2017
0.0
6/21/2018
0
4/16/2018
-3.1
12/13/2016
0.0
6/22/2018
0
6/23/2018
0
6/18/2018


Last 90 Days

Chandler Burning Index
LOW
<50
MOD
50-75
HIGH
75-90
V HIGH
90-97.5
EXTREME
97.5+

The Chandler Burning Index (CBI) uses the air temperature and relative humidity to calculate a numerical index of fire danger. That number is then equated to the Fire Danger severity of either extreme, very high, high, moderate, or low. It's based solely on weather conditions, with no adjustment for fuel moisture.


Fire Weather Index
LOW
0.0-4.9
MOD
5.0-13.9
HIGH
14.0-20.9
V HIGH
21.0-32.9
EXTREME
33.0+

The Fire Weather Index (FWI) is based on weather readings taken at noon standard time and rates fire danger at the mid afternoon peak from 2:00 4:00 pm.

To interpret the system, the three fuel moisture codes and the three behaviour indices need to be understood. Each code and index is a numerical rating related to likely fire behaviour. The scales start at zero, and except for the Fine Fuel Moisture Code which has a maximum of 99, all are open-ended. Low ratings indicate high moisture content, and ratings rise as moisture content decreases. Ratings rise as fire weather becomes more severe.

Weather readings required are:

  • Air temperature (in the shade)
  • Relative Humidity (in the shade)
  • Wind speed (at 10 metres above ground level for an average over 10 minutes)
  • Rainfall (For the previous 24 hours)
  • The Fire Weather Index has six components:

    Three Fuel Moisture Codes:

  • 1. Fine Fuel Moisture Code
  • 2. Duff Moisture Code
  • 3. Drought Code
  • Three Fire Behaviour Indices:

  • 1. Initial Spread index
  • 2. Build Up Index
  • 3. Fire Weather Index

  • Drought Code
    LOW
    0.0-79.9
    MOD
    80.0-209.9
    HIGH
    210.0-273.9
    V HIGH
    274.0-359.9
    EXTREME
    360.0+

    The DC is a numerical rating of the moisture content of deep, compact, organic layers. It is a useful indicator of seasonal drought and shows the likelihood of fire involving the deep duff layers and large logs. A long period of dry weather (the system uses 52 days) is needed to dry out these fuels and affect the Drought Code. A DC rating of 200 is high, and 300 or more is extreme indicating that fire will involve deep sub-surface and heavy fuels. Burning off should not be permitted when the DC rating is above 300.


    Build Up Index
    LOW
    0.0-18.9
    MOD
    19.0-33.9
    HIGH
    34.0-53.9
    V HIGH
    54.0-76.9
    EXTREME
    77.0+

    The Build Up Index (BUI) shows the amount of fuel available for combustion, indicating how the fire will develop after initial spread. It is calculated from the Duff Moisture Code and the Drought Code.

    The BUI scale starts at zero and is open-ended. A rating above 34 is high, above 77 is extreme.


    Initial Spread Index
    LOW
    0.0-3.9
    MOD
    4.0-7.9
    HIGH
    8.0-10.9
    V HIGH
    11.0-18.9
    EXTREME
    19.0+

    The Initial Spread Index (ISI) indicates the rate fire will spread in its early stages. It is calculated from the FFMC rating and the wind factor.

    The open-ended ISI scale starts at zero and a rating of 10 indicates high rate of spread shortly after ignition. A rating of 19 or more indicates extremely rapid rate of spread.


    Fine Fuel Moisture Code
    LOW
    0.0-80.9
    MOD
    81.0-87.9
    HIGH
    88.0-90.4
    V HIGH
    90.5-92.4
    EXTREME
    92.5+

    The Fine Fuel Moisture Code (FFMC) is a numerical rating of the moisture content of surface litter and other cured fine fuels. It shows the relative ease of ignition and flammability of fine fuels. The moisture content of fine fuels is very sensitive to the weather. Even a day of rain, or of fine and windy weather, will significantly affect the FFMC rating. The system uses a time lag of two-thirds of a day to accurately measure the moisture content in fine fuels. The FFMC rating is on a scale of 0 to 99. Any figure above 70 is high, and above 90 is extreme.


    Drought Factor

    The Drought Factor (DF) is a key component of the FFDI is the modelling of the dryness of the fuel. This is expressed by the Drought Factor (DF), which ranges from 0 to 10. If this is multiplied by 10 and called a percent, it gives the percentage of fine fuel that would be removed by a fire under the current conditions.

    The DF is based on recent rainfall and on the Byram-Keetch Drought Index (BKDI).


    Grass Fire Danger Code
    LOW
    0-10
    kw/m2
    MODERATE
    11-500
    kw/m2
    HIGH
    501-2000
    kw/m2
    V HIGH
    2001-4000
    kw/m2
    EXTREME
    4000+
    kw/m2

    The Grass Fire Danger Code (GFD) is based on predicted generated "fire intensity (kw/m)" in grass type vegetation (dry grass, tussock). This code denotes how difficult it would be to control a fire in this vegetation type should one start.


    Scrub Fire Danger Code
    LOW
    0-10
    kw/m2
    MODERATE
    11-500
    kw/m2
    HIGH
    501-2000
    kw/m2
    V HIGH
    2001-4000
    kw/m2
    EXTREME
    4000+
    kw/m2

    The Scrub Fire Danger Code (SFDC) is based on predicted generated "fire intensity (kw/m)" in flammable scrub type vegetation (tea tree, broom, gorse, manuka). This code denotes how difficult it would be to control a fire in this vegetation type should one start.


    Forest Fire Danger Code
    LOW
    0-10 kw/m
    MODERATE
    11-500
    kw/m2
    HIGH
    501-2000
    kw/m2
    V HIGH
    2001-4000
    kw/m2
    EXTREME
    4000+
    kw/m2

    The Forest Fire Danger Code (GFFDC) is based on predicted generated "fire intensity (kw/m)" in grass type vegetation (dry grass, tussock). This code denotes how difficult it would be to control a fire in this vegetation type should one start.


    Last updated @ 6/23/2018 12:02:28 PM Central Time By FWI Calc (Ver 10.4.1.107).