Resolution criteria

This market resolves to YES if the National Weather Service (NWS) San Diego office (KSGX) issues a High Surf Advisory (VTEC phenomenon code SU and significance code Y) covering the Orange County Coastal Areas (UGC CAZ552) and/or the San Diego County Coastal Areas (UGC CAZ043) at any point between August 6, 2026, at 12:00 AM PDT and August 26, 2026, at 11:59 PM PDT (inclusive). Otherwise, this market resolves to NO.

An advisory is considered "issued" if its official issuance timestamp falls within the specified date range.

Verification Sources:

• Iowa Environmental Mesonet (IEM) VTEC Browser: Select WFO KSGX (San Diego), Phenomenon SU (High Surf), and Significance Y (Advisory) for the year 2026.

• National Weather Service San Diego official hazard archives and Coastal Hazard Messages.

Background

In Southern California, NWS San Diego issues High Surf Advisories when large breaking waves pose a localized threat to life and property, typically when surf heights are forecast to reach 6 feet or higher. In late July and early August 2026, swells from Category 4 Hurricane Genevieve triggered a High Surf Advisory for both Orange and San Diego county beaches. This market tracks whether subsequent weather systems or tropical swells will prompt another advisory during the mid-to-late August window.

This description was generated by AI. Review and verify everything here yourself. You can edit, replace, or delete any part of this description, including the resolution criteria. You do not need to trust the AI output.