Unnamed tropical depression (1991)
Unnamed tropical depression peaked at 30 kt in the North Atlantic between August 28, 1991 and August 31, 1991.
Track and intensity
The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1991 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
- North Atlantic
- Dates
- August 28, 1991 to August 31, 1991
- Peak strength
- Tropical Depression, 30 kt (35 mph)
- Landfall
- No; closest approach 777 km (483 mi)
- Accumulated cyclone energy
- 0.0
- Identifier
- AL051991
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 |
|---|---|---|---|---|
| Aug 28, 12:00 | 10.5N 30.8W | 25 kt | Tropical depression | |
| Aug 28, 18:00 | 10.7N 32.4W | 30 kt | Tropical depression | |
| Aug 29, 00:00 | 10.9N 34.0W | 30 kt | Tropical depression | |
| Aug 29, 06:00 | 11.0N 35.6W | 30 kt | Tropical depression | |
| Aug 29, 12:00 | 11.2N 37.3W | 30 kt | Tropical depression | |
| Aug 29, 18:00 | 11.3N 38.9W | 30 kt | Tropical depression | |
| Aug 30, 00:00 | 11.4N 40.5W | 30 kt | Tropical depression | |
| Aug 30, 06:00 | 11.5N 42.1W | 30 kt | Tropical depression | |
| Aug 30, 12:00 | 11.7N 43.9W | 30 kt | Tropical depression | |
| Aug 30, 18:00 | 11.9N 45.7W | 30 kt | Tropical depression | |
| Aug 31, 00:00 | 12.0N 47.6W | 30 kt | Tropical depression | |
| Aug 31, 06:00 | 12.3N 49.8W | 25 kt | Tropical depression | |
| Aug 31, 12:00 | 12.7N 52.8W | 25 kt | Tropical depression |
Other North Atlantic storms of 1991
- Tropical Storm AnaNorth Atlantic · 1991
- Unnamed tropical depressionNorth Atlantic · 1991
- Hurricane BobNorth Atlantic · 1991
- Unnamed tropical depressionNorth Atlantic · 1991
- Hurricane ClaudetteNorth Atlantic · 1991
- Tropical Storm DannyNorth Atlantic · 1991
- Tropical Storm ErikaNorth Atlantic · 1991
- Tropical Storm FabianNorth Atlantic · 1991
- Unnamed tropical depressionNorth Atlantic · 1991
- Hurricane GraceNorth Atlantic · 1991
- Unnamed hurricaneNorth Atlantic · 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.
The National Hurricane Center has published no tropical cyclone report for this storm.