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Porto, Portugal
OPO (Porto, Portugal) sits at 41.25°N, 8.68°W, 228 ft elevation — coastal.
Major airport serving Porto, Portugal.
Computed from OPO's geography and climate
Porto sits squarely under the mid-latitude-latitude jet, north of which most long-haul corridors run. Clear-air turbulence (CAT) at cruise is the most common source of bumps on departures from here, especially during December–February when the jet is at its strongest. Warm-season convection (June–August) drives the dominant turbulence pattern from OPO — afternoon thunderstorm cells are routed around but their wake turbulence and gust fronts can still affect arrivals and departures. OPO's coastal position means departures often transit from the cool marine boundary layer into warmer continental air within minutes of takeoff — a brief but reliable bumpy transition on warm-season afternoons when the sea breeze is set up.
Climbout typically transitions from cool marine air to warmer continental air — a brief bumpy layer near the boundary is normal on summer afternoons.
Winter (December–February) brings the strongest jet-stream activity — that's when long-haul departures most often log clear-air turbulence at cruise. Summer (June–August) is peak thunderstorm season — convective turbulence is the dominant warm-season risk.
Get a real-time turbulence forecast for any scheduled flight out of Francisco de Sá Carneiro Airport, with live wind, jet-stream analysis and pilot reports.
Francisco de Sá Carneiro Airport is best described as a mid-latitude jet-exposed hub. Porto sits squarely under the mid-latitude-latitude jet, north of which most long-haul corridors run. Clear-air turbulence (CAT) at cruise is the most common source of bumps on departures from here, especially during December–February when the jet is at its strongest. Warm-season convection (June–August) drives the dominant turbulence pattern from OPO — afternoon thunderstorm cells are routed around but their wake turbulence and gust fronts can still affect arrivals and departures. OPO's coastal position means departures often transit from the cool marine boundary layer into warmer continental air within minutes of takeoff — a brief but reliable bumpy transition on warm-season afternoons when the sea breeze is set up.
Winter (December–February) brings the strongest jet-stream activity — that's when long-haul departures most often log clear-air turbulence at cruise. Summer (June–August) is peak thunderstorm season — convective turbulence is the dominant warm-season risk. Peak turbulence window: November–February (strong jet). Typically calmest: May–September.
We combine live NOAA Aviation Weather Center data (PIREPs, SIGMETs, AIRMETs) with physics-based Ellrod and Richardson-number calculations derived from Open-Meteo pressure-level wind and temperature data. If a source is unavailable for a waypoint we show an em dash rather than invent a number.
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