TR874 turbulence forecast
Scoot · Singapore (SIN) to Taipei (TPE)
The forecast for its last flight, Fri 23 Oct
We have no upcoming TR874 departure on record, so this is the forecast its most recent flight carried.
Smooth most of the way, with occasional moderate bumps on descent. The belt sign will likely come on.
- Bumpiest stretch
- Moderate
- Flight time
- 4h 45m
- Distance
- 3,225 km
- Cruise altitude
- 37,000 ft
- Weather models
- 3 blended
- Model agreement
- High
- Aircraft
- Boeing 787 Dreamliner
Bumpiness along the flight
Takeoff on the left, landing on the right. The higher the line, the bumpier the air the forecast expects at that moment.
Where, and why
The flight split into stretches: how bumpy each is forecast to be, and what causes it.
Cruise0m – 4h 26mLight
Jet-stream wind shear
Where fast air slides over slower air, usually at the edge of the jet stream, the boundary ripples like a flag. It's the most common kind of turbulence, and it's on the crew's charts before departure. When they meet it, they slow to a set turbulence speed and ride it out.
At cruise the air is thin and cold, and most of it is calm. The bumps up here come from the jet stream, a band of fast wind whose edges stir the air, or from waves set off by mountains far below. This forecast shows where those edges are.
Descent into Taipei4h 27m – 4h 45mModerate
Jet-stream wind shear
Where fast air slides over slower air, usually at the edge of the jet stream, the boundary ripples like a flag. It's the most common kind of turbulence, and it's on the crew's charts before departure. When they meet it, they slow to a set turbulence speed and ride it out.
Coming down means flying back through the low, lively air near the ground: afternoon thermals, gusts around the airport. It is the busiest part of the flight for the crew, and the part they train for most.
Thunderstorms near the route
Between 1h 2m and 4h 45m into the flight the forecast has a few thunderstorms, the nearest about 40 km from the planned line.
The ride line can stay calm with storms nearby. It follows the planned track at cruise height, above most storm tops. Pilots don't fly through storms: the weather radar in the nose shows each one, and the rule is to stay at least 20 nautical miles (about 37 km) away. Usually that means a detour of a few minutes.
The closest of these is within the 20 nm the crew has to keep, so expect a small turn around it. The line on the map is the planned route; the real track will bend around the storm.
A tropical cyclone near the route
Champi (Typhoon, category cat2) is forecast to be about 280 km from the aircraft around 4h 45m into the flight, at its closest.
Tropical cyclones are tracked for days by official warning centres, and airlines plan routes, altitudes and timings around them before departure. The air can be bumpy well beyond the storm's centre, which is why the crew may keep the seatbelt sign on for longer near one.
This forecast changes. FlyBud tells you when.
A new weather model run lands every few hours. Add TR874 in FlyBud and you get the full turbulence map along your route, a push when the forecast for your flight changes, live tracking and your flight on the lock screen.
Flight status
The latest TR874 flight on our records, as the airline last reported it.
Last update 14 days ago
Gate changes, delays and the baggage belt, pushed to your phone as they happen.
The aircraft
What TR874 is flown with, and how it handles bumpy air.
Boeing 787-9 Dreamliner
- Type code
- B789
- Seats on this flight
- 375
- First flew
- 2009
- In service since
- 2011
- Economy seating
- 3-3-3
- Engines
- 2
- Range
- 15,370 km
- Cabin pressure equal to
- 6,000 ft
Bigger and heavier aircraft are moved less by the same patch of air, and every airliner is designed for much stronger turbulence than it will meet.
The airline
Scoot
Scoot operates TR874.
The route
Singapore (SIN) → Taipei (TPE)
- Distance
- 3,225 km
- Flight time
- 4h 45m
- Usual departure
- 09:30 local
- Usual arrival
- 14:15 local
Recent TR874 flights
The forecast each flight carried, and how it ran.
| Date | Aircraft | Forecast | How it ran |
|---|---|---|---|
| Fri 23 Oct | 787 | Moderate | Cancelled |
What each level feels like
- Smooth
- Calm air. Nothing to notice beyond the hum of the engines.
- Light
- Gentle ripples and the odd dip. Drinks stay put, and walking to the toilet is fine.
- Moderate
- Clear bumps. Drinks may slosh and the belt sign comes on. Uncomfortable, but the pilots stay in full control.
- Severe
- Strong jolts, and loose items can move. This is rare, and it's why the belt sign exists. Crews slow down and change altitude to get out of it.
How this forecast is made
The planned route is sampled from gate to gate at the altitude the aircraft flies, through 3 independent global weather models, and corrected with turbulence reports radioed in by pilots in the last few hours. Each new model run replaces the forecast; nothing here is a guess from the airline's history.
The independent weather models behind this forecast agree on this ride.
Planned route · timing and conditions may change.
Why turbulence isn't dangerous
Aircraft are designed for much worse.
Airliners are tested to loads well beyond anything turbulence produces. The wings are meant to flex, so seeing them move is normal.
Crews know where it is.
Your crew has forecasts like this one, live reports from other pilots and their own weather radar, and they change altitude to stay out of bumpy air.
Keep your belt on.
Almost all turbulence injuries happen to people who are standing or not buckled in. Seated with your belt on, turbulence is uncomfortable but not dangerous.
Questions about TR874
Will TR874 be bumpy?
Forecasts for TR874 open about three days before departure. Until then no weather model reaches far enough ahead to say anything honest about the ride.
What plane flies TR874?
Recently TR874 has been flown with: Boeing 787 Dreamliner. Airlines can swap the aircraft until shortly before departure.
How long is TR874?
About 4h 45m gate to gate from Singapore to Taipei, a distance of about 3,225 km.
What time does TR874 leave?
TR874 usually departs Singapore at 09:30 local time and arrives in Taipei at 14:15 local time. Times change; the app tracks the live schedule.
Is turbulence dangerous on TR874?
Turbulence is uncomfortable, not dangerous to the aircraft. Airliners are certified for loads far beyond anything turbulence produces, and crews plan around the bumpy patches with the same kind of forecast as this one. Injuries are almost always to people who were standing or unbuckled, so keep your seatbelt fastened whenever you're seated.
How accurate is this turbulence forecast?
It is a forecast, so it is best within a day or so of departure and improves with every model run. The bumpy patches it finds are usually in the right place, but their timing can shift by a few minutes and the crew may change altitude to avoid them, so the ride you get is often smoother than the forecast.
Fly TR874 knowing what's ahead
The turbulence forecast for your exact flight, live tracking, delay alerts and arrival weather. Built for people who'd rather know.