Example 6. Wisconsin Fire Suppression Handbool< Example, No Control. Time 

 of event is 3 hours from start of fire. Fire is a crown fire moving over forested 

 land, probably jack pine (P. banksiana). 



Variable Documented Simple ellipse Double ellipse Double ellipse 

 values values values adj. values 



Time 

 Area 



Perimeter 



Distance 



Windspeed 



3.0 hours 

 5,320.0 acres 

 14.0 miles 

 5.5 miles 

 — mi/h 

 2.8:1 



5,320 

 14.0 

 6.6 



4.1:1 



5,969 

 14.7 



6.6 

 12.5 



4.1:1 



5,320 

 12.3 

 5.0 

 8.7 

 2.8:1 



Time 

 Area 



Perimeter 

 Distance 

 Windspeed 

 i/w 



4.0 



11,200 

 20 

 7.8 



2.9:1 



11,200 

 20 

 9.3 



3.9:1 



12,560 

 21.2 



9.3 

 11.9 



3.9:1 



11,200 

 18.1 

 7.4 

 9.1 

 2.9:1 



Example 7. Wisconsin Fire Suppression Handbook Example, Good Control. 

 Time of event is 1 hour after fire start. Fire is a crown fire moving over forested 

 land, probably jack pine (P. banksiana). 



Variable Documented Simple ellipse Double ellipse Double ellipse 

 values values values adj. values 



Time 

 Area 



Perimeter 

 Distance 

 Windspeed 

 i/w 



1.0 hours 

 460.0 acres 

 3.5 miles 

 1.4 miles 

 — mi/h 

 2.2:1 



460 



3.5 

 1.5 



2.6:1 



588 



4.6 

 1.5 



7.6 

 2.5:1 



460 



3.4 

 1.2 

 5.9 

 2.2:1 



Time 

 Area 



Perimeter 

 Distance 

 Windspeed 

 i/w 



2.0 

 1,300.0 

 7.5 

 3.2 



4.9:1 



1,300 

 7.5 



5.0:1 



1,396 

 7.8 

 3.6 

 14.2 

 4.9:1 



1,300 

 7.5 

 3.4 

 14.0 

 4.9:1 



Time 

 Area 



Perimeter 

 Distance 

 Windspeed 

 i/w 



3.0 

 1,900.0 

 10.0 

 4.5 



6.9:1 



1,900 

 10 

 4.9 



6.2:1 



1,993 

 10.3 



4.9 

 16.3 



6.2:1 



1,900 

 10.5 



5.0 

 17.2 



6.9:1 



Time 

 Area 



Perimeter 

 Distance 

 Windspeed 

 i/w 



4.0 

 2,200 

 12.0 

 5.6 



8.4:1 



2,200 

 12 

 5.9 



7.9:1 



2,291 

 12.2 



5.9 

 18.5 



7.9:1 



2,200 

 12.3 



6.0 

 19.0 



8.4:1 



25 



