Unnamed tropical depression (2009)
Unnamed tropical depression peaked at 30 kt in the North Atlantic between September 25, 2009 and September 26, 2009, with a lowest pressure of 1008 mb.
Track and intensity
The whole track of Unnamed tropical depression, colored by strength, with the other storms of the 2009 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 25, 2009 to September 26, 2009
- Peak strength
- Tropical Depression, 30 kt (35 mph)
- Lowest pressure
- 1008 mb (29.77 inHg)
- Landfall
- No; closest approach 1237 km (769 mi)
- Accumulated cyclone energy
- 0.0
- Eyewall radius at its peak
- 20 nmi (37 km, 23 mi)
- Overall size
- 200 nmi (370 km, 230 mi) to the outermost closed isobar
- Peak gust in the best track
- 40 kt (46 mph)
- Fastest the center moved
- 12 kt (14 mph)
- Identifier
- AL082009
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Sep 25, 06:00 | 14.8N 29.0W | 20 kt | 1010 mb | Low |
| Sep 25, 12:00 | 15.4N 30.1W | 25 kt | 1009 mb | Low |
| Sep 25, 18:00 | 16.1N 31.1W | 30 kt | 1008 mb | Tropical depression |
| Sep 26, 00:00 | 16.7N 32.2W | 30 kt | 1008 mb | Tropical depression |
| Sep 26, 06:00 | 17.2N 33.3W | 30 kt | 1008 mb | Tropical depression |
| Sep 26, 12:00 | 17.8N 34.3W | 30 kt | 1008 mb | Tropical depression |
| Sep 26, 18:00 | 18.6N 35.2W | 25 kt | 1008 mb | Tropical depression |
Other North Atlantic storms of 2009
- Unnamed tropical depressionNorth Atlantic · 2009
- Tropical Storm AnaNorth Atlantic · 2009
- Hurricane BillNorth Atlantic · 2009 · 2 deaths · $46 million
- Tropical Storm ClaudetteNorth Atlantic · 2009
- Tropical Storm DannyNorth Atlantic · 2009
- Tropical Storm ErikaNorth Atlantic · 2009
- Hurricane FredNorth Atlantic · 2009
- Tropical Storm GraceNorth Atlantic · 2009
- Tropical Storm HenriNorth Atlantic · 2009
- Hurricane IdaNorth Atlantic · 2009
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.