Your Flight
We analysed more than 1,500 data points along your route from Hartsfield-Jackson Atlanta International, Atlanta to St. Louis Lambert International Airport, St Louis.
Southwest Airlines
ATL
STL
WN3793
Southwest Airlines · Live forecast
ATL
→
STL
78
Calm Score
"Mostly smooth — one short bumpy section you'll handle."
0h 45m
Duration
420 nm
Distance
30,000 ft
Cruise Altitude
VERY HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity — higher means rougher
Smooth
Light
Moderate
Severe
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Beta
You still have 7 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.
Right now on your route
Live pilot reports from aircraft flying ATL → STL
7 pilot reports along this route
2 / 7
Reporting smooth
4 / 7
Light turbulence
1
Moderate or worse
Latest pilot reports
Smooth
CPS UUA /OV CPS/TM 1455/FLDURD/TP GLF6/RM LLWS +10KT 003-SFC
11m ago
Light
RMG UA /OV RMG180035/TM 1451/FL200/TP A333/SK TOP 195/TA M13/TB OCNL-CONS LGT CHOP/IC NEG/RM SMOTH ABV 200 ZTLFD-04
15m ago
Smooth
ATL UA /OV ATL 320049/TM 1450/FL190/TP A320/TA -16/IC LGT RIME 160
16m ago
Moderate
IND UA /OV LVT270050/TM 1449/FL330/TP B737/TB MOD
17m ago
Light
RMG UA /OV RMG300003/TM 1448/FL160/TP A320/TA M13/TB OCNL-CONS LGT CHOP/IC LGT RIME 160/RM ZTLFD-05
18m ago
AI-powered flight briefing
1,500 data points analyzed
· VERY HIGH confidence
Your Journey Beta
16 minutes into the flight: Some moderate bumps expected.
The crew may adjust altitude or ask you to stay seated during these sections.
The rest of the flight should be smooth.
Your route takes you over the Appalachian Mountains – conditions there can sometimes cause light turbulence.
Mostly Smooth
Overall conditions look mostly smooth with occasional light bumps. Nothing to worry about.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 99 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 45 min
Maximum turbulence expected per segment
Takeoff
Light
0:15-0:30
Moderate
Landing
Light
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
ATL
Hartsfield-Jackson Atlanta International — Departure
Visibility
8 mi
Wind
19 kt G30 (300°)
Sky
Broken
Temperature
9°C
Conditions
MVFR — Reduced visibility, minor delays possible
STL
St. Louis Lambert International Airport — Arrival
Visibility
9 mi
Wind
19 kt G31 (300°)
Sky
Broken
Temperature
-6°C
Conditions
MVFR — Reduced visibility, minor delays possible
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
boeing 737-8h4
Category
Narrow-Body Aircraft
Size
Medium
Comfort
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.
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.