Cyclone Osea (1998)
Cyclone Osea reached Category 2 in the South Pacific between November 21, 1997 and November 28, 1997, with a lowest pressure of 950 mb.
Track and intensity
The whole track of Cyclone Osea, colored by strength, with the other storms of the 1998 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.
The storm
- Basin
- South Pacific
- Dates
- November 21, 1997 to November 28, 1997
- Peak strength
- Category 2, 90 kt (104 mph)
- Lowest pressure
- 950 mb (28.05 inHg)
- Landfall
- No; closest approach 1575 km (979 mi)
- Accumulated cyclone energy
- 6.5
- Fastest the center moved
- 12 kt (14 mph)
- Identifier
- SH061998
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Nov 21, 18:00 | 9.2S 156.7W | 20 kt | Tropical storm | |
| Nov 22, 00:00 | 9.5S 156.5W | 30 kt | 1004 mb | Tropical storm |
| Nov 22, 06:00 | 9.7S 156.3W | 30 kt | 1004 mb | Tropical storm |
| Nov 22, 12:00 | 9.9S 156.2W | 30 kt | 1004 mb | Tropical storm |
| Nov 22, 18:00 | 10.0S 156.3W | 30 kt | 1004 mb | Tropical storm |
| Nov 23, 00:00 | 9.9S 156.7W | 30 kt | 1002 mb | Tropical storm |
| Nov 23, 06:00 | 9.9S 157.1W | 30 kt | 1002 mb | Tropical storm |
| Nov 23, 12:00 | 10.1S 157.3W | 35 kt | 1002 mb | Tropical storm |
| Nov 23, 18:00 | 10.7S 157.5W | 35 kt | 1000 mb | Tropical storm |
| Nov 24, 00:00 | 11.6S 157.7W | 35 kt | 995 mb | Tropical storm |
| Nov 24, 06:00 | 12.9S 157.7W | 35 kt | 990 mb | Tropical storm |
| Nov 24, 12:00 | 13.5S 157.2W | 55 kt | 987 mb | Tropical storm |
| Nov 24, 18:00 | 13.8S 156.4W | 55 kt | 985 mb | Tropical storm |
| Nov 25, 00:00 | 13.9S 155.5W | 55 kt | 980 mb | Tropical storm |
| Nov 25, 06:00 | 14.2S 154.6W | 65 kt | 975 mb | Tropical storm |
| Nov 25, 12:00 | 14.7S 153.9W | 65 kt | 970 mb | Tropical storm |
| Nov 25, 18:00 | 15.3S 153.2W | 75 kt | 960 mb | Tropical storm |
| Nov 26, 00:00 | 16.2S 152.5W | 75 kt | 955 mb | Tropical storm |
| Nov 26, 06:00 | 17.3S 151.9W | 90 kt | 950 mb | Tropical storm |
| Nov 26, 12:00 | 18.2S 151.4W | 90 kt | 955 mb | Tropical storm |
| Nov 26, 18:00 | 18.9S 150.8W | 75 kt | 965 mb | Tropical storm |
| Nov 27, 00:00 | 19.7S 150.2W | 55 kt | 975 mb | Tropical storm |
| Nov 27, 06:00 | 20.3S 149.4W | 35 kt | 980 mb | Tropical storm |
| Nov 27, 12:00 | 20.4S 150.6W | 50 kt | 985 mb | Not reported |
| Nov 27, 18:00 | 20.7S 150.3W | 45 kt | 987 mb | Not reported |
| Nov 28, 00:00 | 21.2S 149.2W | 35 kt | 995 mb | Not reported |
| Nov 28, 06:00 | 21.4S 148.0W | 30 kt | 998 mb | Not reported |
| Nov 28, 12:00 | 21.5S 147.1W | 25 kt | 1000 mb | Not reported |
Other South Pacific storms of 1998
- Tropical Storm LusiSouth Pacific · 1998
- Unnamed tropical stormSouth Pacific · 1998
- Cyclone MartinSouth Pacific · 1998
- Cyclone NuteSouth Pacific · 1998
- Cyclone PamSouth Pacific · 1998
- Cyclone SusanSouth Pacific · 1998
- Cyclone RonSouth Pacific · 1998
- Cyclone KatrinaSouth Pacific · 1998
- Tropical Storm LesSouth Pacific · 1998
- Tropical Storm TuiSouth Pacific · 1998
- Cyclone UrsulaSouth Pacific · 1998
- Cyclone VeliSouth Pacific · 1998
- Tropical Storm WesSouth Pacific · 1998
- Cyclone Cindy:VictorSouth Pacific · 1998
- Tropical Storm MaySouth Pacific · 1998
- Cyclone YaliSouth Pacific · 1998
- Cyclone NathanSouth Pacific · 1998
- Cyclone ZumanSouth Pacific · 1998
- Unnamed tropical stormSouth Pacific · 1998
- Tropical Storm AlanSouth Pacific · 1998
- Tropical Storm BartSouth Pacific · 1998
What this means
A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.
Sources
Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.