Crossed swells
Two swells arriving at the same time from different directions: waves get messier, with peaks that keep shifting. Isobath flags it when a second swell reaches at least 40% of the first with at least 40° between them.
Other terms
Bathymetry · Beach break · Breaking height · Confidence · Cross-shore wind · Ensemble forecast · Forecast model · Gusts · Iribarren (breaker type) · Offshore wind · Onshore wind · Peak period · Period · Persistence · Point break · Range · Reef · Rip currents · Seabed relief (EMODnet) · Set · Shorebreak · Submarine canyon · Swell · Swell direction · Tidal range · Tide · Tide coefficient · Wind sea