2023 tropical cyclone season · Southern Hemisphere

Cyclone Unnamed SH10 SH10 · SH102023

Cyclone Unnamed SH10 was tracked in the Southern Hemisphere from 2023-01-19 to 2023-01-23 (4 days), peaking at 40 kt (TS) with a minimum pressure of 996 hPa. 84 archived forecasts from ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was GFS, 167 km off on average.

Open the interactive storm map →

ATCF ID
SH102023
Basin
Southern Hemisphere
Tracked
2023-01-19 → 2023-01-23 (4 days)
Peak wind
40 kt · 21 m/s · TS
Minimum pressure
996 hPa
Archived forecasts
84
Sources
ECMWF · ECMWF ENS · GFS · GEFS
TDTSH1H2H3H4H5

Forecast track error (km)

Source24 h48 h72 h120 h
ECMWF50 (2)———
ECMWF ENS68 (3)———
GFS122 (5)167 (4)——
GEFS134 (5)180 (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
2023-01-19 12Z18.2°S 156.1°E251002TD
2023-01-19 18Z17.9°S 156.4°E301000TD
2023-01-20 00Z18.2°S 157.2°E301000TD
2023-01-20 06Z19.1°S 158.9°E301000TD
2023-01-20 12Z20.0°S 160.0°E40998TS
2023-01-20 18Z20.6°S 161.1°E35996TS
2023-01-21 00Z21.4°S 162.4°E35996TS
2023-01-21 06Z21.7°S 162.9°E30998TD
2023-01-21 12Z22.2°S 163.7°E30999TD
2023-01-21 18Z22.9°S 164.4°E251002TD
2023-01-22 00Z23.8°S 164.4°E251001TD
2023-01-22 06Z24.8°S 164.0°E251000TD
2023-01-22 12Z25.0°S 163.9°E25999TD
2023-01-22 18Z25.9°S 163.8°E201001TD
2023-01-23 00Z26.7°S 163.8°E201002TD
2023-01-23 06Z27.4°S 163.6°E201002TD
2023-01-23 12Z27.8°S 163.2°E251000TD
2023-01-23 18Z28.3°S 163.6°E201000TD