Mayor Marion Barry, hoping to get the jump on his seasonal nemesis before the first flake falls, stood beside a gleaming plow in the warm fall sun at RFK Stadium yesterday to announce that -- this year -- the District is ready for the snow.

"Nobody here needs to stretch his or her memory to recall" the misery of last January's snowstorms that nearly paralyzed the city, Barry said, as he unveiled what he said was a comprehensive plan to mobilize the entire city government earlier, faster and more efficiently.

Referring to complaints that he was out of town last year for the Super Bowl in Los Angeles while the city struggled with two major snowfalls, Barry said he would try harder to return to the city.

"Citizens like to feel their mayor is suffering with them . . . . I want to be in the cold with them, feel the pain . . . . Psychologically and politically, I need to be here," Barry said.

The new plan calls for additional snowplows, a revised emergency route system, mobilization in the event of forecasts of two inches rather than three to four inches, and other measures.

The mayor's willingness now to tackle a subject voluntarily that bedeviled him last season is part of what he and his aides say is a renewed effort to counter criticism publicly -- some from his own staff -- that he has failed to pay attention to his job and has been distracted by continuing federal investigations of his administration.

"The mayor is determined that rather than get bogged down in dealing with many of the controversies reported in the news media, he's going about the business of running the city and dealing with nuts and bolts," Press Secretary John C. White said.

On Thursday, Barry staged an elaborate announcement at the Capital Hilton Hotel of the city's efforts to improve job training programs for the coming fiscal year, which begins next week.

On Saturday, Barry will go to Eastgate Gardens in Southeast Washington to participate in a public housing program, Operation Take Care, in which city officials join residents in clearing away debris.

Barry will be in New York City on Monday to join other big-city mayors and entertainer Bill Cosby for an antiapartheid demonstration. And next Thursday, Barry will be at another public housing project in Southeast -- Barry Farms -- to announce the resolution of bureaucratic and financing problems that have delayed for several years the $21 million renovation of the 432-unit complex.

Barry's news conference yesterday featured a backdrop of snowplows, a one-inch thick "Comprehensive Emergency Snow Plan" booklet and a group of public works employes who demonstrated their readiness by pushing around mounds of sand that had been trucked to the stadium parking lot.

Several aides admitted that the high-profile news conference contained an element of risk. Officials said they knew that, come winter, if there are any major glitches, television stations will delight in contrasting poor snow removal with the balmy scene recorded yesterday.

Barry cautioned that he still felt Washington was not a "snow belt" city and said "we may still experience a problem or two . . . {but} we believe we have looked at all of our difficulties . . . recognizing that rain and snow and ice are uncontrollable . . . acts of God."

The new plan includes revised snow emergency routes that are to be clearly marked with new and larger signs. Barry, who last year said the city was too lenient, said the city would be tough on towing cars to make way for plows. The District will operate a 24-hour snow emergency headquarters at the Frank Reeves Municipal Center at 14th and U streets NW, where more frequent announcements to the public will be made about problems.

George W. Schoene, chief of traffic services, said that the revised snow routes include nearly all of the major arteries of the city but that many smaller streets have been removed from the list of snow routes.

After last seasons' problems, the Senate Appropriations subcommittee on the District added $2.3 million to the city's budget for the coming year to help prepare for the snowfall.

John Touchstone, the director of public works, said the city has purchased several new trucks and 30 new plows that can be attached to large and small vehicles. Last season, residents complained that the city did not have small vehicles that could plow smaller streets.