Your Flight
We analysed more than 200 data points along your route from San Francisco International Airport to Napa County.
Netjets
SFO
APC
1I401
Netjets · Live forecast
SFO
→
APC
100
Calm Score
"A smooth ride ahead — sit back and enjoy."
23h 55m
Duration
36 nm
Distance
-
Cruise Altitude
HIGH
Confidence
Too short for a turbulence forecast
Forecastable turbulence (jet streams and clear-air turbulence) forms high up, on longer flights. A hop this short barely reaches cruise altitude, so there is almost nothing to predict, and short flights are among the smoothest you can take. Any bumps are usually brief, during climb or descent, from local winds near the ground.
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Beta
You still have 21 hours before departure. We'll notify you if this forecast changes.
We know turbulence can feel scary — especially on long flights.
This report is built for you: what bumps feel like, when they happen, and why you'll be completely safe. 1 in 3 passengers feel exactly like you.
AI-powered flight briefing
200 data points analyzed
· HIGH confidence
Your Journey Beta
Your route takes you directly to your destination.
Smooth Flight
We're expecting smooth conditions throughout your flight. You can sit back and relax.
Takeoff
Takeoff should feel smooth, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 39 knots.
Landing
Landing should feel smooth 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 turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity. Learn more
Flight Timeline 23h 55min
Maximum turbulence expected per segment
Takeoff
Smooth
0:30-1:00
Smooth
1:00-1:30
Smooth
1:30-2:00
Smooth
2:00-2:30
Smooth
2:30-3:00
Smooth
3:00-3:30
Smooth
3:30-4:00
Smooth
4:00-4:30
Smooth
4:30-5:00
Smooth
5:00-5:30
Smooth
5:30-6:00
Smooth
6:00-6:30
Smooth
6:30-7:00
Smooth
7:00-7:30
Smooth
7:30-8:00
Smooth
8:00-8:30
Smooth
8:30-9:00
Smooth
9:00-9:30
Smooth
9:30-10:00
Smooth
10:00-10:30
Smooth
10:30-11:00
Smooth
11:00-11:30
Smooth
11:30-12:00
Smooth
12:00-12:30
Smooth
12:30-13:00
Smooth
13:00-13:30
Smooth
13:30-14:00
Smooth
14:00-14:30
Smooth
14:30-15:00
Smooth
15:00-15:30
Smooth
15:30-16:00
Smooth
16:00-16:30
Smooth
16:30-17:00
Smooth
17:00-17:30
Smooth
17:30-18:00
Smooth
18:00-18:30
Smooth
18:30-19:00
Smooth
19:00-19:30
Smooth
19:30-20:00
Smooth
20:00-20:30
Smooth
20:30-21:00
Smooth
21:00-21:29
Smooth
21:29-21:58
Smooth
21:58-22:27
Smooth
22:27-22:56
Smooth
22:56-23:25
Smooth
Landing
Smooth
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Airport conditions
Live weather at departure and arrival
SFO
San Francisco International Airport — Departure
Wind
21 kt G28 (290°)
Sky
Clear
Temperature
19°C
Conditions
VFR — Clear conditions, no delays expected
APC
Napa County — Arrival
Wind
15 kt (210°)
Sky
Clear
Temperature
25°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Evening Flight Departure
Time of day
Evening Flight
Tip
Evening and night flights typically offer smoother conditions as thermal activity subsides and the atmosphere stabilizes after sunset.
When
Today
Data sources & our approach
ZeroTurb's Custom Algorithm: Our proprietary
ZeroTurb Index (ZTI) combines three meteorological indices weighted by their
predictive accuracy — giving you transparent, passenger-focused turbulence probability instead
of vague categories.
This forecast integrates data from:
- ECMWF Open Data — Global atmospheric model (wind/temperature at 13 flight levels)
- NOAA Aviation Weather Center — Pilot Reports (PIREPs), SIGMETs/AIRMETs, TAFs
- NOAA Space Weather Prediction Center — Aurora forecasts for polar routes
- AviationStack API — Flight schedules and airline operational data
Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.