TWENTY-FIVE of the world's best women skiers will compete this weekend in the $30,000 Timberline Pro Classic, held at Timberline Four Seasons Resort in Davis, W. Va.

The giant slalom qualifying round starts Saturday at 10, with the finals at noon. Qualifiers and finals for the slalom races will be at the same times on Sunday.

Competitors in the race, the second stop in the nine-city Women's Pro Ski Tour, include 1993 winner Catharina Glasser-Bjerner, three-time winner Roswitha Raudaschl, top American skier Lynda McGehee-Walsh and Timberline's Julie Woodworth-Buniva.

For an update on snow conditions at resorts around the country, call Post-Haste, The Washington Post's telephone information service. The number is 202/334-9000, ext. 4300. It's free within the 202 calling area.

If you missed the guide to mid-Atlantic ski resorts that appeared in the Nov. 26 Weekend section, reprints are available through your fax machine. Call 800/945-5190 from a touch- tone phone. You will be asked to enter the number of your major credit card and the "article number."

The ski resort guide, with information on 30 area resorts, costs $2.50; the article number is 452. You will also be asked to enter the number of your fax machine.

The ski resort guide is also available by mail -- call 800/666-9329 ext. 121 weekdays between 9 and 5.