Unnamed tropical storm (2011)
Unnamed tropical storm peaked at 45 kt in the South Atlantic between March 9, 2011 and March 16, 2011, with a lowest pressure of 989 mb, and made landfall.
Track and intensity
The whole track of Unnamed tropical storm, colored by strength, with the other storms of the 2011 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
- South Atlantic
- Dates
- March 9, 2011 to March 16, 2011
- Peak strength
- Tropical Storm, 45 kt (52 mph)
- Lowest pressure
- 989 mb (29.21 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 0.0
- Identifier
- SL502011
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Mar 9, 18:00 | 19.7S 39.0W | 20 kt | 1007 mb | Low |
| Mar 10, 00:00 | 20.0S 39.1W | 20 kt | 1009 mb | Low |
| Mar 10, 06:00 | 19.8S 39.1W | 25 kt | 1008 mb | Low |
| Mar 10, 12:00 | 19.4S 39.0W | 25 kt | 1009 mb | Low |
| Mar 10, 18:00 | 19.0S 39.0W | 25 kt | 1007 mb | Low |
| Mar 11, 00:00 | 19.2S 39.2W | 25 kt | 1008 mb | Low |
| Mar 11, 06:00 | 19.3S 39.6W | 25 kt | 1007 mb | Low |
| Mar 11, 12:00 | 19.4S 39.9W | 30 kt | 1009 mb | Low |
| Mar 11, 18:00 | 19.5S 39.9W | 30 kt | 1006 mb | Low |
| Mar 12, 00:00 | 19.1S 40.2W | 30 kt | 1008 mb | Low |
| Mar 12, 06:00 | 19.3S 40.2W | 30 kt | 1007 mb | Low |
| Mar 12, 12:00 | 19.6S 40.2W | 30 kt | 1008 mb | Low |
| Mar 12, 18:00 | 19.9S 40.1W | 30 kt | 1005 mb | Low |
| Mar 13, 00:00 | 20.0S 40.2W | 30 kt | 1006 mb | Low |
| Mar 13, 06:00 | 20.0S 40.6W | 30 kt | 1005 mb | Low |
| Mar 13, 12:00 | 20.0S 41.0W | 30 kt | 1004 mb | Low |
| Mar 13, 18:00 | 20.0S 40.8W | 30 kt | 1001 mb | Low |
| Mar 14, 00:00 | 20.4S 40.8W | 30 kt | 1001 mb | Low |
| Mar 14, 06:00 | 21.6S 40.8W | 30 kt | 1002 mb | Low |
| Mar 14, 12:00 | 22.4S 40.7W | 30 kt | 1003 mb | Low |
| Mar 14, 18:00 | 22.7S 40.2W | 30 kt | 1000 mb | Low |
| Mar 15, 00:00 | 23.6S 38.8W | 30 kt | 1000 mb | Low |
| Mar 15, 06:00 | 24.3S 37.7W | 30 kt | 1002 mb | Low |
| Mar 15, 12:00 | 24.8S 37.2W | 30 kt | 1002 mb | Low |
| Mar 15, 18:00 | 25.0S 36.5W | 30 kt | 1000 mb | Low |
| Mar 16, 00:00 | 25.2S 34.7W | 35 kt | 998 mb | Low |
| Mar 16, 06:00 | 25.6S 33.5W | 40 kt | 993 mb | Low |
| Mar 16, 12:00 | 25.8S 32.0W | 45 kt | 989 mb | Low |
| Mar 16, 18:00 | 25.4S 30.5W | 45 kt | 989 mb | Low |
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.