Tropical Storm Alpha (2020)
Tropical Storm Alpha peaked at 60 kt in the North Atlantic between September 14, 2020 and September 19, 2020, with a lowest pressure of 992 mb, and made landfall.
Track and intensity
The whole track of Tropical Storm Alpha, colored by strength, with the other storms of the 2020 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 14, 2020 to September 19, 2020
- Peak strength
- Tropical Storm, 60 kt (69 mph)
- Lowest pressure
- 992 mb (29.29 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 0.0
- Tropical-storm-force wind reached
- 270 nmi (500 km, 311 mi) from the center at its widest
- Eyewall radius at its peak
- 90 nmi (167 km, 104 mi)
- Overall size
- 240 nmi (444 km, 276 mi) to the outermost closed isobar
- Peak gust in the best track
- 55 kt (63 mph)
- Fastest the center moved
- 20 kt (23 mph)
- Identifier
- AL242020
Deaths and damage
The sources count different things and are not added together.
National Hurricane Center
0 direct deathsnone recorded in the United States
The season table in NHC’s report archive, final report. Direct deaths are those caused by the storm’s own wind, water or surge, anywhere in the world.
Landfall
| Time (UTC) | Where | Position | Wind | Pressure |
|---|---|---|---|---|
| Sep 18, 18:40 | Figueira da Foz, Coimbra, Portugal, 17 km away | 40.0N 8.9W | 45 kt (52 mph) | 996 mb |
Landfall points the US agencies flagged in the best track. The nearest town is named from the site’s gazetteer, not from the report.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Sep 14, 12:00 | 47.2N 22.0W | 40 kt | 1002 mb | Extratropical |
| Sep 14, 18:00 | 47.2N 22.2W | 50 kt | 996 mb | Extratropical |
| Sep 15, 00:00 | 47.0N 22.4W | 60 kt | 992 mb | Extratropical |
| Sep 15, 06:00 | 46.0N 22.5W | 60 kt | 994 mb | Extratropical |
| Sep 15, 12:00 | 45.0N 22.1W | 50 kt | 996 mb | Extratropical |
| Sep 15, 18:00 | 43.9N 21.4W | 45 kt | 998 mb | Extratropical |
| Sep 16, 00:00 | 42.9N 20.5W | 40 kt | 1000 mb | Extratropical |
| Sep 16, 06:00 | 41.9N 19.8W | 40 kt | 1000 mb | Extratropical |
| Sep 16, 12:00 | 40.9N 19.5W | 40 kt | 1000 mb | Extratropical |
| Sep 16, 18:00 | 39.9N 19.3W | 40 kt | 1000 mb | Extratropical |
| Sep 17, 00:00 | 38.9N 18.9W | 35 kt | 1002 mb | Extratropical |
| Sep 17, 06:00 | 38.3N 18.1W | 35 kt | 1002 mb | Subtropical storm |
| Sep 17, 12:00 | 37.7N 17.3W | 35 kt | 1002 mb | Subtropical storm |
| Sep 17, 18:00 | 36.7N 15.6W | 40 kt | 999 mb | Subtropical storm |
| Sep 18, 00:00 | 36.7N 13.1W | 45 kt | 996 mb | Subtropical storm |
| Sep 18, 06:00 | 37.9N 11.4W | 45 kt | 996 mb | Subtropical storm |
| Sep 18, 12:00 | 38.9N 10.3W | 45 kt | 996 mb | Subtropical storm |
| Sep 18, 18:00 | 39.9N 9.1W | 45 kt | 996 mb | Subtropical storm |
| Sep 18, 18:40 landfall | 40.0N 8.9W | 45 kt | 996 mb | Subtropical storm |
| Sep 19, 00:00 | 40.6N 7.6W | 30 kt | 1004 mb | Subtropical depression |
Other North Atlantic storms of 2020
- Tropical Storm ArthurNorth Atlantic · 2020
- Tropical Storm BerthaNorth Atlantic · 2020
- Tropical Storm CristobalNorth Atlantic · 2020 · 6 deaths · $310 million
- Tropical Storm DollyNorth Atlantic · 2020
- Tropical Storm EdouardNorth Atlantic · 2020
- Tropical Storm FayNorth Atlantic · 2020 · 2 deaths · $220 million
- Tropical Storm GonzaloNorth Atlantic · 2020
- Hurricane HannaNorth Atlantic · 2020 · 4 deaths · $1.1 billion
- Hurricane IsaiasNorth Atlantic · 2020 · 12 deaths · $5.0 billion
- Unnamed tropical depressionNorth Atlantic · 2020
- Tropical Storm JosephineNorth Atlantic · 2020
- Tropical Storm KyleNorth Atlantic · 2020
- Hurricane LauraNorth Atlantic · 2020 · 47 deaths · $19 billion
- Hurricane MarcoNorth Atlantic · 2020
- Tropical Storm OmarNorth Atlantic · 2020
- Hurricane NanaNorth Atlantic · 2020
- Tropical Storm ReneNorth Atlantic · 2020
- Hurricane PauletteNorth Atlantic · 2020 · 2 deaths
- Hurricane SallyNorth Atlantic · 2020 · 4 deaths · $7.3 billion
- Hurricane TeddyNorth Atlantic · 2020 · 2 deaths · $20 million
- Tropical Storm VickyNorth Atlantic · 2020
- Tropical Storm WilfredNorth Atlantic · 2020
- Tropical Storm BetaNorth Atlantic · 2020 · $225 million
- Hurricane GammaNorth Atlantic · 2020 · 6 deaths
- Hurricane DeltaNorth Atlantic · 2020 · 2 deaths · $2.9 billion
- Hurricane EpsilonNorth Atlantic · 2020 · 1 death
- Hurricane ZetaNorth Atlantic · 2020 · 5 deaths · $4.4 billion
- Hurricane EtaNorth Atlantic · 2020 · 172 deaths · $1.5 billion
- Tropical Storm ThetaNorth Atlantic · 2020
- Hurricane IotaNorth Atlantic · 2020 · 67 deaths
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.