Table 54. -- Forward behavior of firs at time of arrival by percent within each charac- 



teristic class and between size classes 



(Av. 1950-58) 





Smoldering 



Creeping 



Running 



Spotting 



Crowning 



Final 

 size 









Fuel type—/ 









clas s 



Spruc6 



Other 



Spruce 



Other 



Spruce 



Other 



7, PI — 



Spruce_/ 



_ n t 

 Spruce£/ 











May 



(159 fires) 









A 



56.0 



41.7 



21.6 



35.0 



4.0 



31.9 











B 



36.0 



33.3 



37.9 



35.0 



52.0 



40.9 



66.7 



66.7 



C 



4.0 



25.0 



29.7 



20.0 



24.0 



9.1 



33.3 







D 



4.0 







8.1 







4.0 



4.5 







4 



E 











2.7 



10.0 



16.0 



13.6 







33.3 











June 



(266 fires) 









A 



60.6 



60.5 



24.4 



24.0 



17.1 



8.0 



25 .0 



3.1 



B 



23.0 



18.2 



43.9 



32.0 



29.2 



8.0 



12.5 



18 .8 



C 



8.2 



6.1 



19.5 



20.0 



19 .5 



24.0 



25.0 



18.8 



D 



3.3 



9.1 



4.9 



12.0 



9.8 



16.0 



12. 5 



12.5 



E 



4.9 



6.1 



7.3 



12.0 



24.4 



44.0 



25.0 



46.8 











July 



(232 fires) 









A 



80.0 



40.8 



35.7 



20.0 



10.3 



15.8 



50.0 



14.3 



B 



9.2 



25.9 



38.1 



44.0 



48.3 



21.0 







4.8 



C 



7.7 



22.2 



7.1 



20 .0 



20.7 



31.6 







14.3 



D 







7.4 



4.8 











5.3 



25.0 



9.5 



E 



3.1 



3.7 



14. 3 



16.0 



20.7 



26.3 



25.0 



57.1 











Augu 



st (87 fires 



) 







A 



76.5 



66.7 



56.3 



20.0 



14.3 















B 



20.6 



25.0 



31.2 



40.0 



42.9 



20.0 



100 



33.3 



C 



2.9 



8.3 



12.5 



40.0 



42.8 



60.0 







66.7 



D 























20.0 











E 









































Summary all months (744 fires) 







A 



69.8 



51.1 



30.9 



25.3 



11.8 



16.9 



25.0 



6.8 



B 



19.4 



25.0 



39.0 



27.4 



41.2 



22.5 



25.0 



16.9 



C 



6.5 



15.6 



17.6 



21. 3 



22.5 



23.9 



18.7 



18.7 



D 



1.6 



5.2 



5.1 



4.0 



4.9 



9.9 



12.5 



10.2 



E 



2.7 



3.1 



7.4 



12.0 



19.6 



26.8 



18.8 



47.4 



1/ 'Spruce' type consists of Spruce, spruce-hardwood. 



'Other': Broadleaf, reproduction, brush, grass, tundra, muskeg. 

 2/ Only scattered occurrences of spotting and crowning occur in the fuel type- 



'Other' since it is composed mostly of grass, tundra, and brush. 



Source: Coded IBM runs from individual fire reports. 



162 



