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A Country-Wide Forest Fire Weather Hazard Index

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Unless precipitation is considered, no sound basis is available either for rating the relative difficulty of a fire season or for judging comparative accomplishments in fire control from year to year. This article describes the development and use of a single index of precipitation conditions for the counrty as a whole. It also points out the necessity of considering the effect of surpluses or deficiencies in precipitation over extended periods in gauging the degree of fire danger, rather than being influenced in this respect solely by current or short term weather conditions. For general index purposes it is held that cumulative weather records will serve this purpose fairly well, but for local and more accurate gauges of this factor research has yet to produce a satisfactory measuring device.

Document Type: Journal Article

Affiliations: Assistant Chief, Branch of Operation, U. S. Forest Service

Publication date: April 1, 1935

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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