Pavones Alert Guide

Puntarenas, Costa Rica · part of the Pavones spot guide

Calling Pavones is a forecasting game with a long fuse. There is no wave buoy in the swell corridor, so the skill is reading storm charts nearly a week out and confirming with the model point data as the swell crosses the Pacific — which is exactly what an alert can watch for you.

The forecaster's checklist

1. 1.Watch the South Pacific storm corridor, roughly 40–60°S from south of New Zealand across to the waters west of southern Chile, for compact lows whose fetch aims northeast at Central America.
2. 2.Give it lead time: a long-period swell takes roughly 5–8 days to travel from that corridor to the Golfo Dulce mouth, so the model signature shows up nearly a week before the waves.
3. 3.Run on models, not buoys: no wave-measuring buoy exists on this coast (the nearby NDBC stations are DART tsunami sensors with no sea-state data). Forecasters use GFS-Wave / WAVEWATCH III points off the gulf mouth and cross-check against ECMWF.
4. 4.Demand direction 180–210° and period of at least 14–15 seconds holding across multiple consecutive model steps, with deep-water heights of 1.5 m (5 ft) or more.
5. 5.Reject the duds: right-size swell aimed past ~215° arrives sectiony and shadowed; period under ~12 seconds won’t wrap the point; and a spike one model run shows but the next doesn’t is noise, not a swell.
6. 6.Then check the local overlay — a dawn session before the seabreeze, a pushing mid tide, and river state after heavy rain. The first morning of a called swell is the quiet one; by day two the whole region has arrived.

Local winds & tide

Best wind: N through E — offshore drainage off the hills at dawn — from 350° to 90° (N–E).

The tide swings up to about 9 ft here. The point handles all tides, but a pushing mid tide is the consensus call: big high tides fatten and slow the wall, and dead low exposes the slippery, barnacle-covered cobblestone entry.

Dial it in