It includes Frederick and surrounding jurisdictions.
From the National Weather Service:
TORNADO WATCH 350 IS IN EFFECT UNTIL 1200 AM EDT FOR THE FOLLOWING LOCATIONSMDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035-037-039-041-043-045-047-510-310400-/O.NEW.KWNS.TO.A.0350.250530T2055Z-250531T0400Z/MD. MARYLAND COUNTIES INCLUDED AREANNE ARUNDEL BALTIMORE CALVERTCAROLINE CARROLL CECILCHARLES DORCHESTER FREDERICKHARFORD HOWARD KENTMONTGOMERY PRINCE GEORGES QUEEN ANNE`SSOMERSET ST. MARYS TALBOTWASHINGTON WICOMICO WORCESTERMARYLAND INDEPENDENT CITIES INCLUDED AREBALTIMORE CITYBy The National Weather Service, Sterling, Va.