TABLE 12: Probability of Ignition Table |
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Shading (%) |
Dry-bulb Temp. (F) |
FINE DEAD FUEL MOISTURE (PERCENT) |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
Unshaded < 50% |
110+ |
100 |
100 |
80 |
70 |
60 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
20 |
10 |
100-109 |
100 |
90 |
80 |
70 |
60 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
90-99 |
100 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
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80-89 |
100 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
70-79 |
100 |
80 |
70 |
60 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
60-69 |
90 |
80 |
70 |
60 |
50 |
50 |
40 |
30 |
30 |
20 |
20 |
20 |
20 |
10 |
10 |
10 |
|
50-59 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
40-49 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
30-39 |
80 |
70 |
60 |
50 |
50 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
10 |
Shaded > 50% |
110+ |
100 |
90 |
80 |
70 |
60 |
50 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
100-109 |
100 |
90 |
80 |
70 |
60 |
50 |
50 |
40 |
30 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
90-99 |
100 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
|
80-89 |
100 |
80 |
70 |
60 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
70-79 |
90 |
80 |
70 |
60 |
50 |
50 |
40 |
30 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
60-69 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
|
50-59 |
90 |
80 |
70 |
60 |
50 |
40 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
40-49 |
90 |
80 |
60 |
50 |
50 |
40 |
30 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
30-39 |
80 |
80 |
60 |
50 |
50 |
40 |
30 |
30 |
20 |
20 |
20 |
10 |
10 |
10 |
10 |
10 |
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PI > 70% HIGH PROBABILITY OF SPOT FIRES |
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