Saginaw, Minnesota, USA
 Today is
Local Fire Weather
Camp Fire    Forest Fire

The following is FWI Data from the Saginaw, MN WX Station (KMNSAGIN3 / EW3146)
Lat: 46.8457 N  Long: -92.4691 W  Alt: 1332 ft ASL
Saginaw, Minnesota, U.S.A. Northern Hemisphere.

This information is gathered from a Private Weather Station since 4/1/2013

The Fire infomation below is calculated using recent weather data observations
and offer an overview of the fire weather conditions for Saginaw and surrounding area.

All data below is updated daily at 13:00 hrs DLST except for the CBI which is updated every 15 minutes
after the initial midday reading until the peak temperature is reached.

Always check official source's when comparing information obtained from the internet.

Last updated on 8/10/2018 1:08:36 PM Central Time

Chandler Burning Index
[Based on Peak Temperature]

15.0

Fire Weather Index
[Based on Midday Reading]

5.0

"Only you can prevent wildfires"

Monthly Average
CBI
Monthly Average
CBI DC
4.8
LW


Peak Time: 12:00 hrs DLST on 8/10/2018
Peak Temp
Humidity at Peak
Wind at Peak
81.4ºF
55%
1.0 mph


Today's Reading at 13:00 hrs DLST on 8/10/2018
Temperature Humidity Wind Speed *Rainfall FFMC DMC DC ISI BUI CBI CBI DC FWI FWI DC FMI
81.4ºF 55% 1.0 mph 0.00 in 86.6 15 130 2.8 23 15.0 LW 5.0 MD 16.9

*24 hr Rainfall Since Last Daily Update
(May include rain, melted hail, or dew in summer months or melted snow/ice/frost in winter months)


0 consecuative days of rain (Total: 0.00 in)
1 days since last rainfall
*BKDI
*DF
*GFD
*GFD DC
*SFD
*SFD DC
*FFD
*FFD DC
21 - Mild
6
466 kw/m2
MD
2060 kw/m2
VH
13 kw/m2
MD

*Not Available During Winter Months


Past 14 days

DateTemp
ºF
Humidity
%
Wind Speed
mph
Rainfall
in
FFMCDMCDCISIBUICBICBI DCFWI DCDFBKDI
8/10/201881.4551.00.0086.6151302.82315.0LWMD621
8/9/201880.3671.00.0283.5121221.9206.3LWLW622
8/8/201877.5746.00.0180.0101141.8173.0LWLW716
8/7/201872.9631.00.0171.291060.7148.0LWLW711
8/6/201868.0791.00.0052.97990.2111.1LWLW67
8/5/201879.6773.01.0336.76930.0102.2LWLW00
8/4/201866.6953.00.1232.6101380.017-1.4LWLW464
8/3/201866.4811.00.0247.7131350.1220.5LWLW761
8/2/201859.8731.00.1132.2131290.0202.4LWLW459
8/1/201856.6950.00.5219.3151230.023-1.7LWLW158
7/31/201880.0573.00.0087.3351443.74313.1LWMD683
7/30/201877.5561.00.0087.2321353.14013.7LWMD677
7/29/201877.0552.00.0087.1291273.33714.6LWMD672
7/28/201875.9583.00.0086.2261193.23411.8LWMD666


FWI Statistic data for 2018
Stat FFMC DMC DC ISI BUI CBI FWI FMI BKDI DF
HIGHS 93.0
5/7/2018
43
5/23/2018
168
5/27/2018
9.0
5/5/2018
51
5/23/2018
82.1
5/5/2018
15.8
5/5/2018
9.8
5/7/2018
83
7/31/2018
8
5/26/2018
LOWS 5.3
6/2/2018
0
2/28/2018
8
6/18/2018
0.0
8/5/2018
0
2/28/2018
-2.7
1/11/2018
0.0
8/5/2018
35.4
1/11/2018
0
8/5/2018
0
8/5/2018

FWI Statistic data since records began on 4/1/2013
Stat FFMC DMC DC ISI BUI CBI FWI FMI BKDI DF
HIGHS 93.0
5/7/2018
60
10/13/2013
471
8/25/2013
14.7
4/15/2015
90
10/13/2013
103.7
4/15/2015
23.4
10/1/2013
8.9
5/6/2016
213
8/26/2013
9
8/24/2013
LOWS 1.6
9/25/2015
0
2/28/2018
0
3/27/2016
0.0
8/5/2018
0
2/28/2018
0.0
8/5/2018
-3.6
12/8/2013
38.4
12/8/2013
0
8/5/2018
0
8/5/2018

Statistic data for 2018
61 Rain Days   161 Drought Days   Year Rain: 17.50 in   Average Annual Rainfall: 28.18 in
Stat Temp Humidity Wind Rainfall
HIGHS 87.3ºF
5/26/2018
96%
7/1/2018
13.0 mph
1/26/2018
2.09 in
6/18/2018
LOWS -6.6ºF
1/12/2018
23%
2/28/2018
0.0 mph
8/1/2018
0.00 in
8/10/2018

Statistic data since fire records began on 4/1/2013
Stat Temp Humidity Wind Rainfall
HIGHS 88.9ºF
8/26/2013
98%
11/30/2016
26.0 mph
11/18/2015
3.18 in
9/6/2015
LOWS -18.0ºF
12/8/2013
18%
4/15/2015
0.0 mph
8/1/2018
0.00 in
8/10/2018


Fire Danger Descriptions

Chandler Burning Index
LOW
< 50
MODERATE
50-75
HIGH
75-90
VERY 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
MODERATE
5.0-13.9
HIGH
14.0-20.9
VERY 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 pm to 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 33 feet 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

  • Fine Fuel Moisture Code
    LOW
    0.0-80.9
    MODERATE
    81.0-87.9
    HIGH
    88.0-90.4
    VERY 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.


    Duff Moisture Code
    LOW
    0.0-12.9
    MODERATE
    13.0-27.9
    HIGH
    28.0-41.9
    VERY HIGH
    42.0-62.9
    EXTREME
    63.0+

    The Duff Moisture Code (DMC) is a numerical rating of the average moisture content of loosely compacted organic layers of moderate depth. The code indicates the depth that fire will burn in moderate duff layers and medium size woody material. Duff layers take longer than surface fuels to dry out but weather conditions over the past couple of weeks will significantly affect the DMC. The system applies a time lag of 12 days to calculate the DMC. A DMC rating of more than 30 is dry, and above 40 indicates that intensive burning will occur in the duff and medium fuels. Burning off operations should not be carried out when the DMC rating is above 40.


    Drought Code
    LOW
    0.0-79.9
    MODERATE
    80.0-209.9
    HIGH
    210.0-273.9
    VERY HIGH
    274.0-359.9
    EXTREME
    360.0+

    The Drought Code (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.


    Initial Spread Index
    LOW
    0.0-3.9
    MODERATE
    4.0-7.9
    HIGH
    8.0-10.9
    VERY 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.


    Build Up Index
    LOW
    0.0-18.9
    MODERATE
    19.0-33.9
    HIGH
    34.0-53.9
    VERY 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.


    Fuel Mositure Index

    Fuel Mositure Index (FMI) is an estimate of moisture content in available fuels, it uses the air temperature and relative humidity to calculate a numerical index of fire danger. No fire danger classification exists for this index. The lower the number, the higher the fire risk. FMI = 10 - 0.25 (T - H) where H = Relative Humidity as % (0-100) and T = Temperature in Degrees Celcius.


    Byram-Keetch Drought Index
    MILD
    0.0-99
    AVERAGE
    100-248
    SERIOUS
    249-315
    SEVERE
    316-390
    EXTREME
    391-800

    The Byram-Keetch Drought Index (BKDI) attempts to measure the amount of precipitation necessary to return the soil to full field capacity. It is a closed system ranging from 0 to 203 units (0 - 800 imperial) and represents a moisture regime from 0 to 203 millimetres (0 - 8 inches) of water through the soil layer. At 203 millimetres (8in) of water, the KBDI assumes saturation. Zero is the point of no moisture deficiency and 203 (800) is the maximum drought that is possible. At any point along the scale, the index number indicates the amount of net rainfall that is required to reduce the index to zero, or saturation.

    The inputs for KBDI are weather station latitude, mean annual precipitation, maximum dry bulb temperature, and the last 24 hours of rainfall. Reduction in drought occurs only when rainfall exceeds 5mm (0.20 inch) (called net rainfall).


    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
    VERY HIGH
    2001-4000
    kw/m2
    EXTREME
    4000+
    kw/m2

    The Grass Fire Danger Code (GFDC) is based on predicted generated "fire intensity (kw/m2)" 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
    VERY HIGH
    2001-4000
    kw/m2
    EXTREME
    4000+
    kw/m2

    The Scrub Fire Danger Code (SFDC) is based on predicted generated "fire intensity (kw/m2)" 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/m2
    MODERATE
    11-500
    kw/m2
    HIGH
    501-2000
    kw/m2
    VERY HIGH
    2001-4000
    kw/m2
    EXTREME
    4000+
    kw/m2

    The Forest Fire Danger Code (FFDC) is based on predicted generated "fire intensity (kw/m2)" 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 on 8/10/2018 1:08:36 PM Central Time By FWI Calc (Ver 10.5.2.109)

    Flag Counter

    Flag Counter