For the most part, Metrorail operates very close to a normal schedule in snowfall of four to six inches. You might experience minor inconvenience caused by train overcrowding when commuters abandon driving in favor of riding Metro. Delays can result when trains must be pulled because snow build-up causes the electronics on the undercarriage of the railcar to malfunction. Sometimes we must use snow and ice clearing equipment between regularly scheduled passenger trains. This may cause longer waits between trains to allow time for the snow to be cleared.
Schools close, businesses and governments institute liberal leave policies or close altogether, and the region curtails all but the most basic services. Likewise, Metro's focus shifts when blizzards are predicted and snow accumulates beyond eight inches. When the temperature drops and weather deteriorates, the electrified third rail becomes snow-impacted, aboveground tracks ice over, and rail yards become impassable.
For safety reasons as well as to preserve our railcars, we will suspend aboveground rail service in a major snowstorm and serve only underground stations. This allows us to spare more of our railcars from weather-related breakdowns. We can then focus on snow clearing operations on aboveground tracks and store a limited number of trains underground. Closing all aboveground stations is a general scenario. In some cases, snowfall may not be equal throughout the region.
While we realize some customers will be inconvenienced by this snow-related service change, taking this precaution will help ensure that when the region is ready to get back to "business as usual," Metro will be able to get you where you need to go.
The map below shows the underground stations we can still serve under these conditions. Portions of lines that are aboveground and cannot be served are faded.

Under normal conditions, Metrobus service works in tandem with Metrorail service. That is, many Metrobus routes take customers to Metrorail stations. However, bus service obviously depends on road conditions. During a severe snowstorm, do not assume bus service will be available at the final underground stations of each line.
During a storm, we post Metrobus service changes on our Web site. Normally, it progresses like this:
A major snowstorm is a challenging event, but it always seems to bring out the best in people. At Metro, we pledge to give you our best, providing the finest sevice we can. That includes timely, accurate information.
There are a variety of ways to stay informed during a major storm. We are continuously informing local news media of Metro service changes. You can also get this information from this website or by calling Metro Customer Service at 202-637-7000. You can even subscribe to eAlerts to automatically receive email regarding Metrorail service changes that affect you. But eAlerts are not just for snowstorms; the service is great to have any time of the year. Sign up for eAlerts.