Summer’s coming! How heat waves and warm weather may affect your commute

Southern California has a reputation of year-round great weather, but there are times when we experience extreme heat like earlier this week. Instances of extreme heat may place limits on our service, which can results in trains traveling slower than normal.

ARTI C Tracks

During extreme heat waves, railroad tracks may adjust as the steel reacts to the high temperatures. Usually the tracks will expand and that may lead to buckling or other deformations that can cause a derailment.


Metrolink track inspectors check tracks during the heat to identify any potential problems caused by the weather and to ensure safe operations. At times, “slow orders” may be issued to avoid any potential problems and are common when air temperature reaches 110 degrees or the rails themselves reach 140 degrees. This can be common especially along the Antelope Valley and Perris Valley area of our system, but can happen anywhere.


We appreciate your understanding in these situations as we work to ensure a safe environment for our riders.

Be sure to use the Train Tracker for real-time train information and follow us on Facebook and Twitter for train status updates.

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1 Comment

  1. It is what it is

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