Exposure
A term used to describe how breaks within a region will pick up an incoming swell relative to whether they face the incoming swell or not. For example, if you have three breaks facing different directions: break #1 faces south. Break #2 faces southwest. Break #3 faces northwest. Now if we have a incoming S swell: Break #1 would be the best-exposed, #2 would be partially exposed and would most likely be consider average, it would get enough energy to break but not as much as the first beach. Break #3 would be facing away from the swell and would not break.

Expression Session
Period during a surf contest when organizers offer surfers an opportunity to go out and surf however they want. No points are awarded toward contest standings, but there may be prizes awarded.

Extratropical
A term used to indicate that a tropical cyclone has lost its "tropical" characteristic-a warm core center that was the storm's primary energy source. Once "going extratropical" the remains of the tropical cyclone often merges with a cold "winter type" cyclone. The resulting effect of mixing the remnants of warm tropical air with cold air creates a "combustible" type of weather system, which often supercharges the storm with very intense wind speeds and extremely large waves. Extratropical storms usually happen in the fall when late season tropical cyclones converge with early winter storm systems. The storm in the movie "Perfect Storm" was a classic example of an October extratropical storm.

Eye
A relatively calm area found near the center of storms, primarily hurricanes and typhoons. Also termed as the "eye of the storm". In hurricanes or typhoons, the eye is either completely or partially surrounded by the eyewall cloud.

Eyewall/Wall Cloud
A deep, thick band of clouds that surround the eye or center of a tropical cyclone.