Unnamed tropical depression (1991)
Unnamed tropical depression peaked at 25 kt in the Western Pacific between October 27, 1991 and November 1, 1991.
Radar
Reflectivity now over Unnamed tropical depression. 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
- Western Pacific
- Dates
- October 27, 1991 to November 1, 1991
- Peak strength
- Tropical Depression, 25 kt (29 mph)
- Landfall
- No; closest approach 920 km (572 mi)
- Accumulated cyclone energy
- 0.0
- Fastest the center moved
- 17 kt (20 mph)
- Identifier
- WP271991
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 |
|---|---|---|---|---|
| Oct 27, 00:00 | 6.0N 148.8E | 15 kt | Not reported | |
| Oct 27, 06:00 | 6.2N 148.1E | 15 kt | Not reported | |
| Oct 27, 12:00 | 6.5N 147.5E | 15 kt | Not reported | |
| Oct 27, 18:00 | 6.7N 146.8E | 20 kt | Not reported | |
| Oct 28, 00:00 | 7.0N 146.0E | 20 kt | Not reported | |
| Oct 28, 06:00 | 7.2N 145.3E | 20 kt | Not reported | |
| Oct 28, 12:00 | 7.4N 144.6E | 20 kt | Not reported | |
| Oct 28, 18:00 | 7.6N 143.9E | 20 kt | Not reported | |
| Oct 29, 00:00 | 7.9N 143.1E | 20 kt | Not reported | |
| Oct 29, 06:00 | 8.1N 142.3E | 20 kt | Not reported | |
| Oct 29, 12:00 | 8.3N 141.6E | 20 kt | Not reported | |
| Oct 29, 18:00 | 8.6N 140.9E | 20 kt | Not reported | |
| Oct 30, 00:00 | 8.8N 140.2E | 20 kt | Not reported | |
| Oct 30, 06:00 | 9.1N 139.6E | 20 kt | Not reported | |
| Oct 30, 12:00 | 9.3N 138.9E | 25 kt | Not reported | |
| Oct 30, 18:00 | 9.6N 138.2E | 25 kt | Not reported | |
| Oct 31, 00:00 | 10.0N 137.5E | 25 kt | Not reported | |
| Oct 31, 06:00 | 10.4N 136.8E | 25 kt | Not reported | |
| Oct 31, 12:00 | 10.9N 136.1E | 25 kt | Not reported | |
| Oct 31, 18:00 | 11.4N 135.5E | 25 kt | Not reported | |
| Nov 1, 00:00 | 12.0N 135.0E | 25 kt | Not reported |
Other Western Pacific storms of 1991
- Tropical Storm SharonWestern Pacific · 1991
- Typhoon TimWestern Pacific · 1991
- Tropical Storm VanessaWestern Pacific · 1991
- Super Typhoon WaltWestern Pacific · 1991
- Typhoon YunyaWestern Pacific · 1991
- Unnamed tropical depressionWestern Pacific · 1991
- Typhoon ZekeWestern Pacific · 1991
- Typhoon AmyWestern Pacific · 1991 · 136 deaths
- Typhoon BrendanWestern Pacific · 1991
- Typhoon CaitlinWestern Pacific · 1991
- Tropical Depression BrendanWestern Pacific · 1991
- Tropical Storm DougWestern Pacific · 1991
- Typhoon FredWestern Pacific · 1991
- Typhoon EllieWestern Pacific · 1991
- Unnamed tropical depressionWestern Pacific · 1991
- Typhoon GladysWestern Pacific · 1991
- Unnamed tropical depressionWestern Pacific · 1991
- Tropical Storm HarryWestern Pacific · 1991
- Typhoon IvyWestern Pacific · 1991
- Tropical Storm JoelWestern Pacific · 1991
- Typhoon KinnaWestern Pacific · 1991
- Super Typhoon MireilleWestern Pacific · 1991
- Tropical Storm LukeWestern Pacific · 1991
- Typhoon NatWestern Pacific · 1991
- Typhoon PatWestern Pacific · 1991
- Typhoon OrchidWestern Pacific · 1991
- Super Typhoon RuthWestern Pacific · 1991
- Super Typhoon SethWestern Pacific · 1991
- Tropical Storm VerneWestern Pacific · 1991
- Tropical Storm WildaWestern Pacific · 1991
- Super Typhoon YuriWestern Pacific · 1991
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.