COUNTYHarmony Museum, 218 Mercer St., will have a flea market from 8 a.m. to 2 p.m. Saturday in Stewart Hall. The annual Harmoniefest dinner program commemorating 260-plus years of history will be held at 6 p.m. Feb. 13 in Stewart Hall. The Greater Harmony Chorus, an all-women a cappella chorus founded 40 years ago in Harmony, will sing. Reservations are required by Friday. Call 724-452-7341 or visit www.harmonymuseum.org.

PITTSBURGHCarnegie Science Center, North Side, hosts StormFest!, offering visitors a chance to explore the world of weather through geography, geology, and meteorology with hands-on activity stations, from 10 a.m. to 2 p.m. Friday and 10 a.m. to 5 p.m. Saturday, all included with general admission of $18.95 for adults and $11.95 for children ages 3 to 12. Visit CarnegieScienceCenter.org.ToonSeum, Pittsburgh’s Museum of Cartoon Art at 945 Liberty Ave., hosts “Alt-Weekly Comics,” a historical retrospective dedicated to the comics of the alternative weekly newspaper world, and “Fear of a Black Marker: Cartoons by Keith Knight, Gentleman Cartoonist,” both through April 10. Admission is $8 for those 13 and older and $4 for children 6 to 12. Visit toonseum.org.Phipps Conservatory and Botanical Gardens, 700 Frank Curto Drive, hosts Tinker Bell in the Tropics, a fairy tale and creative movement session for children, from 11 to 11:30 a.m. Saturday and Party in the Tropics for adults from 7 to 11 p.m. Friday. Both events are free with general admission of $15 for adults, $14 for senior citizens and students, and $11 for children ages 2 to 18. If the events fill to capacity, admission may be temporarily closed until more space becomes available. Visit phipps.conservatory.org.National Aviary, 700 Arch St., has a new free-flight bird show called “Nature’s Voice” featuring a rare palm nut vulture along with burrowing owls. Aviary hours are 10 a.m. to 5 p.m. daily. Admission is $14 for adults and $13 for senior citizens and children ages 2 to 12; shows are extra. Visit www.aviary.org.Children’s Museum, Allegheny Square, is open 10 a.m. to 5 p.m. daily. Admission is $14 for adults and $13 for children ages 2 to 18 and senior citizens. Visit www.pittsburghkids.org.