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 Hernan EP082026

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

SHIPS coverage: 10 of 11 tropical or subtropical 6-hourly fixes (91%)

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

15°N20°N135°W130°W2026-08-10 18:00 UTC · 14.3°N 127.2°W · 20 kt2026-08-11 00:00 UTC · 14.7°N 127.7°W · 20 kt2026-08-11 06:00 UTC · 15.0°N 128.2°W · 20 kt2026-08-11 12:00 UTC · 15.5°N 128.7°W · 25 kt2026-08-11 18:00 UTC · 15.9°N 129.2°W · 25 kt2026-08-12 00:00 UTC · 16.6°N 129.8°W · 25 kt2026-08-12 06:00 UTC · 17.1°N 130.1°W · 25 kt2026-08-12 12:00 UTC · 17.4°N 130.6°W · 25 kt2026-08-12 18:00 UTC · 17.6°N 131.0°W · 25 kt2026-08-13 00:00 UTC · 17.7°N 131.2°W · 30 kt · SHIPS 30 kt/24 h: 0%2026-08-13 06:00 UTC · 17.9°N 131.5°W · 40 kt · SHIPS 30 kt/24 h: 0%2026-08-13 12:00 UTC · 18.1°N 131.9°W · 40 kt2026-08-13 18:00 UTC · 17.5°N 131.9°W · 40 kt · SHIPS 30 kt/24 h: 9%2026-08-14 00:00 UTC · 17.1°N 131.9°W · 35 kt · SHIPS 30 kt/24 h: 0%2026-08-14 06:00 UTC · 16.5°N 131.9°W · 35 kt · SHIPS 30 kt/24 h: 0%2026-08-14 12:00 UTC · 15.6°N 132.0°W · 35 kt · SHIPS 30 kt/24 h: 0%2026-08-14 18:00 UTC · 15.6°N 132.0°W · 30 kt · SHIPS 30 kt/24 h: 0%2026-08-15 00:00 UTC · 16.1°N 132.1°W · 30 kt · SHIPS 30 kt/24 h: 9%2026-08-15 06:00 UTC · 16.3°N 133.2°W · 30 kt · SHIPS 30 kt/24 h: 0%2026-08-15 12:00 UTC · 16.1°N 134.4°W · 30 kt · SHIPS 30 kt/24 h: 0%2026-08-15 18:00 UTC · 15.8°N 135.4°W · 25 kt · SHIPS 30 kt/24 h: 0%
Observed track
Position from ATCF best track. Hover a point for time, position, wind, and SHIPS RI probability when available.

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.

Satellite intensity estimates

Best-track windDvorak, TAFB (NHC)ADT (UW-CIMSS)SATCON (UW-CIMSS)Maximum wind (kt) estimated from satellite imagery — estimates, not observations, and not the official intensity. ADT and SATCON: UW-CIMSS, delivered through NHC’s ATCF fix files. Subjective Dvorak from the agency named on each fix.