KHB36 (sometimes referred to as Manassas All Hazards) is a NOAA Weather Radio station broadcasting at 162.55 megahertz and transmitting from Independent Hill in central Prince William County, Virginia. It covers most of northern Virginia, Washington, D.C., and southern Maryland. It is programmed from the National Weather Service forecast office in Sterling, Virginia. The signal reliably covers the Virginia counties of Prince William, Fairfax, Arlington, Loudoun, Fauquier, Rappahannock, Culpeper, Spotsylvania, Caroline, King George, and Stafford. Reception is also possible in the Maryland counties of Montgomery, Prince George's, and Charles County, Maryland. Additionally, reception is possible but unreliable in the Virginia counties of Clarke, Frederick, Orange, Louisa, Hanover, Essex, Richmond (no relation to the capital city of the state, which is not covered), and Northumberland, plus Calvert County, Maryland and Anne Arundel County, Maryland.