Tropical Storm Osea (1987)
Tropical Storm Osea peaked at 55 kt in the South Pacific between November 20, 1986 and November 25, 1986, with a lowest pressure of 980 mb.
Radar
Reflectivity now over Tropical Storm Osea. Open it to see storms, cones and warnings on the map.
Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.
The storm
- Basin
- South Pacific
- Dates
- November 20, 1986 to November 25, 1986
- Peak strength
- Tropical Storm, 55 kt (63 mph)
- Lowest pressure
- 980 mb (28.94 inHg)
- Landfall
- No; closest approach 0 km (0 mi)
- Accumulated cyclone energy
- 3.0
- Identifier
- SH021987
Deaths and damage
No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Nov 20, 18:00 | 10.3S 171.2E | 25 kt | Tropical storm | |
| Nov 21, 00:00 | 10.9S 170.2E | 25 kt | Tropical storm | |
| Nov 21, 06:00 | 11.3S 169.7E | 25 kt | Tropical storm | |
| Nov 21, 12:00 | 11.6S 169.3E | 30 kt | 997 mb | Tropical storm |
| Nov 21, 18:00 | 11.8S 169.2E | 30 kt | 997 mb | Tropical storm |
| Nov 22, 00:00 | 12.0S 169.0E | 30 kt | 997 mb | Tropical storm |
| Nov 22, 06:00 | 12.2S 168.9E | 30 kt | 997 mb | Tropical storm |
| Nov 22, 12:00 | 12.4S 168.8E | 35 kt | 997 mb | Tropical storm |
| Nov 22, 18:00 | 12.7S 168.8E | 35 kt | 997 mb | Tropical storm |
| Nov 23, 00:00 | 13.1S 168.8E | 40 kt | 997 mb | Tropical storm |
| Nov 23, 06:00 | 13.6S 168.7E | 45 kt | 995 mb | Tropical storm |
| Nov 23, 12:00 | 14.1S 168.9E | 45 kt | 990 mb | Tropical storm |
| Nov 23, 18:00 | 14.7S 169.2E | 50 kt | 987 mb | Tropical storm |
| Nov 24, 00:00 | 15.2S 169.5E | 55 kt | 985 mb | Tropical storm |
| Nov 24, 06:00 | 15.7S 170.1E | 55 kt | 980 mb | Tropical storm |
| Nov 24, 12:00 | 16.2S 171.1E | 55 kt | 985 mb | Tropical storm |
| Nov 24, 18:00 | 16.7S 172.3E | 55 kt | 987 mb | Tropical storm |
| Nov 25, 00:00 | 17.1S 173.6E | 55 kt | 995 mb | Tropical storm |
| Nov 25, 06:00 | 17.4S 175.3E | 55 kt | 997 mb | Tropical storm |
| Nov 25, 12:00 | 17.5S 177.4E | 35 kt | Tropical storm |
Other South Pacific storms of 1987
- Tropical Storm PatsySouth Pacific · 1987
- Cyclone RajaSouth Pacific · 1987
- Cyclone SallySouth Pacific · 1987
- Cyclone TusiSouth Pacific · 1987
- Tropical Depression IrmaSouth Pacific · 1987
- Unnamed tropical stormSouth Pacific · 1987
- Cyclone Uma:VeliSouth Pacific · 1987
- Cyclone JasonSouth Pacific · 1987
- Tropical Storm VeliSouth Pacific · 1987
- Unnamed tropical depressionSouth Pacific · 1987
- Cyclone WiniSouth Pacific · 1987
- Unnamed tropical stormSouth Pacific · 1987
- Cyclone YaliSouth Pacific · 1987
- Cyclone KaySouth Pacific · 1987
- Tropical Storm ZumanSouth Pacific · 1987
- Tropical Storm Blanch:BlancheSouth Pacific · 1987
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.