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: 2026-09-29 18:00 UTC — Fay is no longer being actively tracked (Post-Tropical Low). See the RI climatology or the marine heatwave map for current activity.
Post-Tropical Low Fay AL062026
Peak 60 kt · Recorded 2026-09-17 12:00 UTC – 2026-09-29 18:00 UTC · 42 cycles archived
SHIPS coverage: 37 of 38 tropical or subtropical 6-hourly fixes (97%)
60 kt peakRI: +30 kt in 24 h beginning 9/20 00Z
Final position 23.7°N 48.2°W · last moving WSW at 10 kt · final pressure 1011 mb · final advisory 39, 2026-09-29 21:00 UTC
Rapid intensification
+30 kt/24 h peak — 2026-09-20 00:00 UTC to 2026-09-21 00:00 UTC (30 → 60 kt, +30 kt across the episode)
Based on preliminary operational best-track data. NHC's post-season reanalysis can revise a storm's wind history — in marginal cases, this could change whether the storm still meets the RI threshold.
Observed trackRapid intensification
Position from ATCF best track. Hover a point for time, position, wind, and SHIPS RI probability when available.
SHIPS data captured 2026-09-18 12:00 UTC – 2026-09-29 18:00 UTC · Peak intensity 60 kt · 42 cycles archived
hover the chart to inspect a moment
Environmental history across Fay'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.