The initials to indicate general weather introduced by Admiral Beaufort, and given by Mr. H. F. Blanford in his "Instructions for Meteorological Observers in India"
b- Blue sky
c- Partial clouds
f- Fog
g- Dark gloomy weather
m- Misty, dust haze
o- Overcast
u- Ugly threatening
v- Visibility ; referring to distant objects
w- Wet, for dew
