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: 2026-06-18 00:00 UTC — Arthur is no longer being actively tracked (Tropical Storm). See the RI climatology or the marine heatwave map for current activity.

Tropical Storm Arthur AL012026

Peak 40 kt · Recorded 2026-06-15 00:00 UTC – 2026-06-18 00:00 UTC · 7 cycles archived

SHIPS coverage: 3 of 3 tropical or subtropical 6-hourly fixes (100%)

40 kt peak

Final position 29.4°N 94.8°W · last moving ENE at 13 kt · final pressure 999 mb · Best track through 2026-06-18 00:00 UTC

25°N30°N100°W95°W2026-06-15 00:00 UTC · 23.5°N 100.3°W · 15 kt2026-06-15 06:00 UTC · 24.3°N 100.5°W · 15 kt2026-06-15 12:00 UTC · 25.0°N 100.8°W · 15 kt2026-06-15 18:00 UTC · 25.7°N 100.5°W · 15 kt2026-06-16 00:00 UTC · 26.3°N 100.0°W · 15 kt2026-06-16 06:00 UTC · 26.7°N 99.2°W · 20 kt2026-06-16 12:00 UTC · 26.9°N 98.3°W · 20 kt · SHIPS 30 kt/24 h: 0%2026-06-16 18:00 UTC · 27.1°N 97.8°W · 25 kt · SHIPS 30 kt/24 h: 7%2026-06-17 00:00 UTC · 27.4°N 97.4°W · 25 kt · SHIPS 30 kt/24 h: 6%2026-06-17 06:00 UTC · 27.7°N 97.1°W · 30 kt · SHIPS 30 kt/24 h: 0%2026-06-17 12:00 UTC · 28.4°N 96.1°W · 35 kt · SHIPS 30 kt/24 h: 0%2026-06-17 18:00 UTC · 28.8°N 96.1°W · 40 kt · SHIPS 30 kt/24 h: 0%2026-06-18 00:00 UTC · 29.4°N 94.8°W · 35 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.

Recon

0 of 3 aircraft fixes fell inside a rapid-intensification episode.

Hurricane Hunter observations archived from NHC: 3 aircraft fixes and 1 archived flight. Observations, not the best track.

Best-track pressureExtrapolated from flight levelAircraft minimum sea-level pressure (mb)
Best-track windPeak flight-level wind(kt)
99°W98°W97°W96°W95°W94°W93°W26°N27°N28°N29°N30°N31°NAircraft fix (observation), 2026-06-17 15:01 UTCAircraft fix (observation), 2026-06-17 17:37 UTCAircraft fix (observation), 2026-06-17 18:14 UTC
Best trackFixes: 06-17 15:01 06-17 18:14 UTC
Fix log (3 fixes with measurements)
Time (UTC)MissionPositionFlight levelMin. SLPSLP methodFL windFix type
06-17 15:01AF302 0201A28.56°N 95.83°W925 mb1004 mbextrapolated17 ktcenter
06-17 17:37NOAA3 0301A28.76°N 95.65°W700 mb999 mbextrapolated39 ktcenter
06-17 18:14NOAA3 0301A28.55°N 95.58°W700 mb1000 mbextrapolated47 ktcenter

All flights for Arthur on the Recon page

SHIPS data captured 2026-06-16 12:00 UTC – 2026-06-18 00:00 UTC · Peak intensity 40 kt · 7 cycles archived

hover the chart to inspect a moment
Environmental history across Arthur'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. The aircraft lane shows each aircraft fix (observation) of minimum sea-level pressure, from NHC's ATCF fix file; it is not the best track.Hover to inspect any moment across every lane at once.

Satellite intensity estimates

Best-track windDvorak, TAFB (NHC)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.