This paper proposes a method for evaluating train running safety in strong wind conditions using the probabilities of strong wind occurrence according to wind direction. The Weibull coefficients c
d and k
d for 16 wind directions were calculated on the basis of data from 10-min maximum instantaneous wind velocities for each wind direction at 772 Automated Meteorological Data Acquisition System (AMeDAS) stations. Probabilities P
x of the occurrence of strong winds exceeding the critical wind speeds for overturning were estimated for a train in a virtual railway section by using c
d and k
d calculated on the basis of the wind data observed at a windy AMeDAS station. P
x values were found to vary from 6.2×10
-6 to 8.6×10
-5 depending on the angle between the traveling direction of the train and each wind direction. The values of P
x ranged from 1.4% to 20% of the P
y values, which were calculated out of consideration of strong wind occurrence according to wind direction.
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