– An elongated area of high pressure in the atmosphere.

– This refers to thunderstorms and rain across the edges of a high pressure ridge. If a ridge occurs across the central US in summer, the ring of fire will extend across the west coast, up into Canada and across the east coast. Underneath the main core of the ridge weather will be stable.

– long waves that form in air or water that flows almost parallel to the equator, which results form the effect of the earth’s rotation.

– Rapid Update Cycle model generated every 3 hours. The model is run each hour, with its initial conditions updated by the inclusion of the latest surface observations available. Its primary usage is for aviation and severe weather forecasting.

– Sky condition when between 1/10 and 5/10 are covered.

– Showers covering 25 to 54 percent of an area.

– A wind that blows from a sea or ocean towards a land mass. Also known as an onshore breeze.