Creates a variation in wind speed

        Args:
            base_speed: base wind speed
            sigma: sigma value for gaussian variation

        Returns: random wind speed

def _randomize_speed(base_speed: int, sigma: int = None) -> int:
        """
        Creates a variation in wind speed

        Args:
            base_speed: base wind speed
            sigma: sigma value for gaussian variation

        Returns: random wind speed

        """
        if sigma is None:
            int_sigma = int(base_speed / 4)
        else:
            int_sigma = sigma
        val = MissionWeather._gauss(base_speed, int_sigma)
        if val < 0:
            return 0
        return min(val, 50)