Operations should begin to return to normal around the Washington area today, except for many local school systems, which remain closed. Following is a list of plans in area jurisdictions:

* Metrobus plans to run all its routes today, with the possible exception of the 27B line. Many routes will be shortened or changed to avoid impassable side roads, Metro officials said, and delays will be common. The full 39-mile rail system will be open, although trains may operate less frequently than is normal.

* Most suburban school districts in the area will remain closed today because of the snow, while District of Columbia schools will open one hour late.

In Maryland, public schools in Montgomery, Prince George's, Anne Arundel, Frederick and Howard counties are closed today. Charles County schools will open one hour late, and Calvert County schools will open on time.

In Virginia, schools in Fairfax, Arlington, Loudoun and Prince William counties and Alexandria will be closed.

Many school officials said the main reason for keeping schools closed is that buses would have trouble on icy, snow-rutted streets. In addition, officials feared that youngsters could be injured amid the hazardous conditions.

"The reason for us is the lack of snow plowing in most of the subdivisions," said Ken Muir, spokesman for Montgomery County schools. "We're at the mercy of the Montgomery County Department of Transportation."

* The federal government is expecting its approximately 330,000 area employes to report for work on time. Yesterday, a late arrival/liberal leave policy was in force.

* D.C. officials said city employes also are expected to report for work on time "unless weather conditions change."

Most government offices and courts in Northern Virginia will be open, including Fairfax, Arlington, Prince William and Loudoun counties, and Alexandria City. Fairfax and Arlington counties are operating under a liberal leave policy.

In Maryland, Prince George's County offices will be open.

* The trash collection schedule in Alexandria will change for the next two weeks because of the snow. Everyone's collection will be a day late, meaning that a usual Monday collection will take place on Tuesday.

* In the District, several events will go on as planned, including a presentation on social services at the East Washington Heights Baptist Church and a forum on cable television at the Mount Pleasant Library.

* The University of Maryland's College Park campus will be closed for day and evening classes, although administrative employes are expected for work. George Mason University has canceled classes, except at its law school where classes will begin at 10 a.m.