Unnamed tropical depression (1971)
Unnamed tropical depression peaked at 30 kt in the North Atlantic between September 3, 1971 and September 8, 1971.
Track and intensity
The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 1971 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
- September 3, 1971 to September 8, 1971
- Peak strength
- Tropical Depression, 30 kt (35 mph)
- Landfall
- No; closest approach 79 km (49 mi)
- Accumulated cyclone energy
- 0.0
- Identifier
- AL121971
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 |
|---|---|---|---|---|
| Sep 3, 12:00 | 13.5N 17.5W | 20 kt | Tropical depression | |
| Sep 3, 18:00 | 13.5N 18.5W | 20 kt | Tropical depression | |
| Sep 4, 00:00 | 13.5N 19.5W | 25 kt | Tropical depression | |
| Sep 4, 06:00 | 13.5N 20.0W | 25 kt | Tropical depression | |
| Sep 4, 12:00 | 13.5N 21.0W | 30 kt | Tropical depression | |
| Sep 4, 18:00 | 13.6N 21.6W | 30 kt | Tropical depression | |
| Sep 5, 00:00 | 13.7N 22.3W | 30 kt | Tropical depression | |
| Sep 5, 06:00 | 13.8N 24.1W | 30 kt | Tropical depression | |
| Sep 5, 12:00 | 14.0N 25.5W | 30 kt | Tropical depression | |
| Sep 5, 18:00 | 14.4N 26.9W | 30 kt | Tropical depression | |
| Sep 6, 00:00 | 14.8N 28.3W | 30 kt | Tropical depression | |
| Sep 6, 06:00 | 15.1N 29.6W | 30 kt | Tropical depression | |
| Sep 6, 12:00 | 15.5N 31.0W | 25 kt | Tropical depression | |
| Sep 6, 18:00 | 15.8N 32.2W | 25 kt | Tropical depression | |
| Sep 7, 00:00 | 16.2N 33.5W | 25 kt | Tropical depression | |
| Sep 7, 06:00 | 16.6N 33.5W | 25 kt | Tropical depression | |
| Sep 7, 12:00 | 17.0N 36.0W | 25 kt | Tropical depression | |
| Sep 7, 18:00 | 17.0N 37.2W | 25 kt | Tropical depression | |
| Sep 8, 00:00 | 17.0N 38.5W | 20 kt | Tropical depression | |
| Sep 8, 06:00 | 17.0N 39.7W | 20 kt | Tropical depression | |
| Sep 8, 12:00 | 17.0N 41.0W | 20 kt | Tropical depression | |
| Sep 8, 18:00 | 17.0N 42.5W | 20 kt | Tropical depression |
Other North Atlantic storms of 1971
- Tropical Storm ArleneNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Unnamed hurricaneNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Hurricane BethNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Tropical Storm ChloeNorth Atlantic · 1971
- Tropical Storm DoriaNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Hurricane FernNorth Atlantic · 1971
- Hurricane EdithNorth Atlantic · 1971
- Hurricane GingerNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Tropical Storm HeidiNorth Atlantic · 1971
- Hurricane Irene:OliviaNorth Atlantic · 1971 · $1.0 million
- Tropical Storm JaniceNorth Atlantic · 1971
- Unnamed tropical depressionNorth Atlantic · 1971
- Tropical Storm KristyNorth Atlantic · 1971
- Tropical Storm LauraNorth Atlantic · 1971
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.