National Weather Service United States Department of Commerce

Snow Across the Great Lakes, Central Appalachians, and Northeast; Unsettled Weather in the West

Light to moderate snow will continue into Saturday over the Great Lakes, Central Appalachians, and Northeast. This weekend into next week, a series of atmospheric rivers will bring gusty winds, periods of heavy rain, and mountain snow to northern California and the Pacific Northwest. Colder temperatures are in store for the weekend from the Great Lakes to East Coast. Read More >

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)