Upper Level Ridge

What is Upper Level Ridge?

Upper Level Ridge meaning in Safety terms is

  • (Upper Level High, Ridge Aloft) An elongated area of relatively high pressure, at a constant altitude, in the atmosphere. The opposite of an upper level trough. Upper level ridges are often oriented north-south, alternating between upper level troughs, however, during summer they may assume random orientations and vast dimensions. 


reference: Glossary A – Z | National Wildfire Coordinating Group