Learn how to predict fuel moisture and fire danger with practical, ready-to-use charts.
This guide explains the morning and afternoon aids used to estimate 4:30 p.m. fuel moisture for fire-danger stations. It covers how to read the charts, apply predicted humidity, and adjust for weather conditions.
The book presents a step-by-step approach, including when to use which aid, how to handle unmanned stations, and how to verify results. It also discusses station exposure, seasonal effects, and common sources of error to help you apply the method accurately in Oregon and Washington’s fire season.
- Understand how to estimate tomorrow’s or today’s fuel moisture from observed values and predicted relative humidity.
- Learn how to adjust estimates for rain, unusual humidity, temperature, or wind conditions.
- See how to apply morning and afternoon aids across peak and valley station types.
- Learn how to verify and refine morning aids for a specific station to improve accuracy.
Ideal for readers involved in forest fire management, weather forecasting, and field operations who need practical, tested methods for predicting fuel moisture.