飞行员从气象雷达和无线电联络中可以预先得知所去机场的气象条件。如果该机场为雷雨天气，飞机可以到备降机场降落。由于雷雨通常为阵雨，所以也可以在空中等待，雷雨过后，再进场着陆。根据飞行计划，飞机上都装有一定的备用燃料，足以保证飞机飞到备降机场或在空中至少飞行45分钟。

What should we do if there is a thunderstorm upon the airport when the airplane is landing?
The weather radar and radio communication let the pilot know weather information of the target airport in advance. If there is a thunderstorm at the target airport, the flight can land to alternate airport. Thunderstorm is usually temporary, so the flight can also wait until the thunderstorm is gone. There is spare fuel on the airplane to ensure the flight to reach the alternate airport or wait in the airfor more than 45 minutes.