SkyStef's weather page


home  |  e-mail    


Boyden Index calculator



Enter the 1000 hPa geopotential (dam)
Enter the 700 hPa geopotential (dam)
Enter the 700 hPa temperature (C)
The Boyden Index is


Boyden   >94      thunderstorms possible.

The Boyden Index is best used for frontal or through thunderstorms during winter season. Not to be used in tropical areas, or when ground level is high as its a measure of instability below 700 hPa.


Formula used: Boyden = (Z700-Z1000) - T700 - 200



Note: Java script must be enabled