National Weather Service United States Department of Commerce

Amarillo, TX

Weather Forecast Office

Fire Weather Wind Adjustment Tool

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Fire Weather Wind Adjustment Tool


UNSHELTERED FUELS: Fuel exposed directly to the wind. No or sparse overstory. Fuel beneath timber that has lost its foliage; fuel beneath timber near clearings or clearcuts; fuel on high ridges where trees offer little shelter from the wind.

1. Fuels usually partially sheltered.
2. Fuels usually fully sheltered.

Fuel Model

4
California
Chaparal
20' RAWS Wind

 Eye Level Wind
(midflame)
13
Heavy Slash
20' RAWS Wind

 Eye Level Wind
(midflame)
1, 21, 3
Grass
5, 6, 71
Shrub/Brush
8, 9, 102
Timber litter
11, 12
Light/Medium Slash
20' RAWS Wind

 Eye Level Wind
(midflame)

PARTIALLY SHELTERED FUELS: Fuel beneath patchy timber where it is not well sheltered; fuel beneath standing timber at midslope or higher on a mountain with wind blowing directly at the slope.
20' RAWS Wind

 Eye Level Wind
(midflame)

FULLY SHELTERED FUELS: Fuel sheltered beneath standing timber on flat or gentle slope or near base of mountain with steep slopes.
Open Stands
20' RAWS Wind

 Eye Level Wind
(midflame)
Dense Stands
20' RAWS Wind

 Eye Level Wind
(midflame)
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