All weather systems
“Mature storm system - organized chaos with predictable weather sequences”
Formation
Fully developed cyclonic system with well-defined warm and cold fronts
Impact
Brings organized weather sequences over 2-3 days as system passes
Technical specs
Wind25-60 mph
Pressure970-1000 mb
TemperatureWide variation across frontal boundaries
RegionsNorth Atlantic, North Pacific, Southern Ocean storm tracks
uncommon
Etymology
Latin 'depressio' (pressing down) - referring to the dip in barometric pressure