Isobaric Charts - heights of the commonly used surfaces

  • The table to the left gives "approximate" altitudes of the common isobaric charts used in meteorology

  Isobaric Charts

Isobaric Surface (mb) Charts

Approximate Elevation (m)

Approximate Elevation (ft)
1000 120 400
850 1,460 4,800
700 3,000 9,800
500 5,600 18,400
300 9,180 30,100
200 11,800 38,700
100 16,200 53,200