Lennart Meri Tallinn Airport turbulence forecast
Tallinn-ulemiste International, Estonia
TLL (Tallinn-ulemiste International, Estonia) sits at 59.41°N, 24.83°E, 131 ft elevation — inland.
About TLL
Major airport serving Tallinn-ulemiste International, Estonia.
- Climate
- Subpolar — long winters, short cool summers
What to expect on departures
Computed from TLL's geography and climate
The jet stream meanders across this latitude seasonally — TLL sees its strongest CAT exposure in December–February, when the polar jet pushes equatorward and routes intersect it more often. June-onwards departures climb into cleaner upper-level flow.
Climbout notes
Climbout is usually unremarkable — most turbulence on flights from Tallinn-ulemiste International occurs at cruise rather than immediately after takeoff.
Seasonal pattern
Winter (December–February) brings the strongest jet-stream activity — that's when long-haul departures most often log clear-air turbulence at cruise.
- Peak turbulence
- November–February (strong jet)
- Typically calmest
- May–September
Departing from TLL?
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TLL turbulence FAQ
Is turbulence common on flights from TLL?
Lennart Meri Tallinn Airport is best described as a high-latitude airport. The jet stream meanders across this latitude seasonally — TLL sees its strongest CAT exposure in December–February, when the polar jet pushes equatorward and routes intersect it more often.
When is turbulence worst for Tallinn-ulemiste International flights?
Winter (December–February) brings the strongest jet-stream activity — that's when long-haul departures most often log clear-air turbulence at cruise. Peak turbulence window: November–February (strong jet). Typically calmest: May–September.
How accurate are Turbcast forecasts?
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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