2025 tropical cyclone season · Southern Hemisphere

Cyclone Unnamed SH05 SH05 · SH052025

Cyclone Unnamed SH05 was tracked in the Southern Hemisphere from 2024-12-24 to 2024-12-31 (7 days), peaking at 35 kt (TS) with a minimum pressure of 1001 hPa. 168 archived forecasts from ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was ECMWF ENS, 83 km off on average.

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ATCF ID
SH052025
Basin
Southern Hemisphere
Tracked
2024-12-24 → 2024-12-31 (7 days)
Peak wind
35 kt · 18 m/s · TS
Minimum pressure
1001 hPa
Archived forecasts
168
Sources
ECMWF · ECMWF ENS · GFS · GEFS
TDTSH1H2H3H4H5

Forecast track error (km)

Source24 h48 h72 h120 h
ECMWF49 (9)88 (5)63 (2)—
ECMWF ENS57 (12)83 (8)83 (4)—
GFS80 (12)146 (8)302 (4)—
GEFS76 (12)156 (8)299 (4)—

Mean great-circle distance to the best track at each lead time, counted while the system was a tropical or subtropical cyclone; the number of cases is in brackets.

Best track

Six-hourly positions of the US best track (JTWC / NHC, one-minute winds); grades on the Saffir–Simpson scale.

Time (UTC)PositionWind (kt)Pressure (hPa)Grade
2024-12-27 00Z11.9°S 95.1°E351002TS
2024-12-27 06Z11.8°S 95.8°E351001TS
2024-12-27 12Z12.5°S 96.4°E351001TS
2024-12-27 18Z13.2°S 96.7°E351003TS
2024-12-28 00Z14.0°S 96.6°E351003TS
2024-12-28 06Z14.4°S 96.0°E291003TD
2024-12-28 12Z14.8°S 96.3°E291003TD
2024-12-28 18Z14.8°S 96.5°E251003TD
2024-12-29 00Z15.4°S 96.6°E251003TD
2024-12-29 06Z15.7°S 95.9°E291002TD
2024-12-29 12Z15.8°S 96.7°E291003TD
2024-12-29 18Z16.1°S 96.8°E291003TD
2024-12-30 00Z16.6°S 95.3°E291005TD
2024-12-30 06Z17.1°S 93.2°E251005TD
2024-12-30 12Z17.3°S 92.4°E251005TD
2024-12-30 18Z17.3°S 91.1°E251006TD
2024-12-31 00Z17.5°S 90.1°E191007TD