Weather & Calamities

Intermediate

Wind Pressure (Dynamic)

The pressure a moving airmass exerts on a surface such as a wall or roof.

Formula

P = \tfrac{1}{2}\rho v^2

Variables

PWind pressure (Pa)

ρAir density (~1.225 kg/m³)

vWind speed (m/s)

Example

A 40 m/s hurricane gust exerts ~1 kPa on a wall

Did You Know?

Because pressure scales with v², doubling the wind speed quadruples the force on a building.

weather storm hurricane wind

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