Snow and sleet fell yesterday in parts of the Washington area, causing early school closings and at least one fatal auto accident.

In Fairfax County, Hun Sothy, 33, of 20 S. Old Glebe Rd., Arlington, was killed when his car skidded into a bridge railing near Vienna. Police said the accident occurred at a bridge carrying Blake Lane over Rte. I-66.

Montgomery County public schools closed 1 1/2 hours early because of snowfall in the northern part of the county and sleet elsewhere, a spokesman for the school system said. Other Maryland schools also were dismissed early, including those in Frederick County, where students were sent home at 12:30 p.m.

The snowfall and sleet mainly occurred in the northern and western outskirts of the Washington area. Sleet was reported at Dulles International Airport during the morning, although flights were not interrupted. In Western Maryland, officials reported between 1 and 3 inches of snow. A light dusting of wet snow was reported in Baltimore.

The National Weather Service attributed the wet and icy weather to a low pressure system moving northeast along the Atlantic Coast from the southeastern U.S. In the Washington area, rain was forecast through this morning, with temperatures ranging from the 30s to about 40 degrees. Hazardous roads were expected in outlying areas.

Virginia Gov. John N. Dalton canceled a trip from Richmond to Northern Virginia yesterday morning because of icy conditions at Manassas Airport, according to his press secretary, Charles Davis. The governor had been scheduled to appear at a engineering firm's dedication ceremonies in Gainesville.

The hazardous, wintry weather prevented one Virginia legislator from attending a special General Assembly redistricting session. House Minority Leader Jerry H. Geisler (R-Hillsville) chose not to go to Richmond after his car skidded off a road near his southwestern Virginia home and into an embankment. He was not injured.