This is an independent research/prototype tool, not an official source. Warnings, watches, and the official forecast for this storm come from the National Hurricane Center.

Final data: 2026-08-15 18:00 UTC — Hernan is no longer being actively tracked (Post-Tropical Low). See the RI climatology or the marine heatwave map for current activity.

Post-Tropical Low HernanEP082026

Peak 40 kt · Recorded 2026-08-10 18:00 UTC – 2026-08-15 18:00 UTC · 16 cycles archived

40 kt peak

Final position 15.8°N 135.9°W · last moving W at 10 kt · final pressure 1009 mb · final advisory 12, 2026-08-15 21:00 UTC

SHIPS data captured 2026-08-11 18:00 UTC – 2026-08-15 18:00 UTC · Peak intensity 40 kt · 16 cycles archived

hover the chart to inspect a moment

Environmental history across Hernan's recorded life. Shaded band(s) mark the same rapid-intensification episode(s) shown in the RI badge above (identical computation, ≥30 kt/24 h merged episodes from best track). Shaded span covers all qualifying 24 h windows, so it can extend past the intensity peak. The SHIPS-RII lane is the forecast probability issued at each cycle, not an observed value. Hover to inspect any moment across every lane at once.