All Nippon Airways HND TTJ NH291
All Nippon Airways
FLIGHT
NH291
HND
Tokyo Haneda International Airport
15:55
17 Jan
Now: --:-- JS
10 h 20 m
TTJ
Tottori Sand Dunes Conan Airport
17:15
17 Jan
Aircraft: a20n Altitude: 30,000ft (9.1km) Distance: 274 nm Duration: 10 h 20 m
AIRCRAFT
a20n
ALTITUDE
30,000ft
DISTANCE
274 nm
DURATION
10 h 20 m
Times and gates subject to change. Verify with airline.
Turbulence Comfort Along Route Comfort View
Comfort Score: Combines turbulence probability (GTG forecast) with intensity (ZTI analysis). High scores indicate both high probability AND high intensity turbulence.
Smooth
Light
Moderate
Severe
Flight Smoothness Score
8.8 /10
Smoothness
Smooth Flight
50%
Smooth
50%
Light

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AI-Powered Flight Briefing
📊 1,000 data points analyzed HIGH Confidence
Your Flight

We analysed more than 1,000 data points along your route from Tokyo Haneda International Airport, Tokyo to Tottori Sand Dunes Conan Airport, Tottori.

Your Journey Beta

Your route takes you crossing the North Pacific Ocean – conditions there can sometimes cause light turbulence.

Smooth Flight

We're expecting smooth conditions throughout your flight. You can sit back and relax.

Takeoff

Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.

Winds Aloft

Winds at cruising altitude are about 129 knots. These winds may delay arrival by up to 15 minutes.

Landing

Landing should feel smooth with possible light bumps with typical approach conditions.

You're in Safe Hands

If you feel nervous at any point, remember that turbulence is expected, safe, and part of normal flying. The crew is monitoring everything, and the aircraft is built to handle far more than anything you will feel. Have a safe and calm flight.

Relaxation Exercises
ZeroTurb Index (ZTI): Powered by our proprietary turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity for precise, real-time forecasting. Learn more
Live data from ECMWF global forecast models • 12 atmospheric pressure levels analyzed • Updated every 6 hours
Flight Timeline 10h 20min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Smooth
1:30-2:00
Light
2:00-2:30
Smooth
2:30-3:00
Light
3:00-3:30
Smooth
3:30-4:00
Smooth
4:00-4:30
Smooth
4:30-5:00
Smooth
5:00-5:29
Smooth
5:29-5:58
Smooth
5:58-6:27
Smooth
6:27-6:56
Smooth
6:56-7:25
Smooth
7:25-7:54
Light
7:54-8:23
Smooth
8:23-8:52
Light
8:52-9:21
Smooth
9:21-9:50
Smooth
Landing
Smooth
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Turbulence Metrics ZTI and EDR (scaled)
ZTI Scale
Smooth
<12
Light
12-30
Moderate
30-45
Severe
>45
EDR Scale
Smooth
<6
Light
6-24
Moderate
24-42
Severe
>42

Airport Weather
Departure
HND
At Departure
12°C (Now)
Few • 6 kt • VFR — Clear conditions, no delays expected
Arrival
TTJ
Current
11°C
Few Clouds • 10 kt • VFR — Clear conditions, no delays expected
☀️ Morning Flight

Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.

Narrow-Body Aircraft (Medium)

Single-aisle mainline jets like this offer a comfortable ride. While you may feel turbulence more than on wide-body aircraft, they are engineered to handle it smoothly.

Looking for more detailed analysis?

Data Sources & Our Approach
ZeroTurb's Custom Algorithm: We've developed a proprietary ZeroTurb Index (ZTI) algorithm that combines three meteorological indices weighted by their predictive accuracy. This gives you transparent, passenger-focused turbulence probability instead of vague categories.

This forecast integrates data from:

Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.

How accurate are turbulence alerts? Alerts are based on updated forecast models and pilot reports, and can change as departure approaches.