Track map, landfall & timeline · Atlantic · September 14–19, 2020
TD TS Cat 1 2 3 4 5 · dashed = post-tropical / remnant low. During the replay the shaded rings show the storm’s wind field as analysed by NHC — 39+, 58+ and 74+ mph winds, quadrant by quadrant. Click any point or table row to jump there.
01 · The story
Subtropical Storm Alpha (2020) was a tropical storm of the 2020 Atlantic season. It formed on September 14, 2020, reached its peak of 69 mph (111 km/h) and a minimum pressure of 992 mb on September 15, 2020, and made landfall 11 mi S of Figueira da Foz, Portugal on September 18, 2020 as a tropical storm (52 mph). The storm lasted 4.5 days and travelled about 1,402 miles (2,256 km).
02 · Intensity
03 · Impact
| Landfall (UTC) | Where | Strength | Pressure |
|---|---|---|---|
| September 18, 2020 · 19:00 UTC | 11 mi S of Figueira da Foz, Portugal | TS 52 mph | 996 mb |
| City | Distance to center | When (UTC) | Storm strength then |
|---|---|---|---|
| Lisbon, Portugal | 53 mi | Sep 18 · 14:00 UTC | TS 52 mph |
Distance from the city to the storm’s center, interpolated hourly between official fixes. Damaging winds, surge and rain reach far beyond the center.
04 · Timeline
| Date · UTC | Status | Wind | Pressure | Position | Nearest place |
|---|---|---|---|---|---|
| Sep 14 12:00 | TS extratropical | 46 mph | 1002 mb | 47.2°N 22.0°W | open ocean |
| Sep 14 18:00 | TS extratropical | 58 mph | 996 mb | 47.2°N 22.2°W | open ocean |
| Sep 15 00:00 | TS extratropical | 69 mph | 992 mb | 47.0°N 22.4°W | open ocean |
| Sep 15 06:00 | TS extratropical | 69 mph | 994 mb | 46.0°N 22.5°W | open ocean |
| Sep 15 12:00 | TS extratropical | 58 mph | 996 mb | 45.0°N 22.1°W | open ocean |
| Sep 15 18:00 | TS extratropical | 52 mph | 998 mb | 43.9°N 21.4°W | open ocean |
| Sep 16 00:00 | TS extratropical | 46 mph | 1000 mb | 42.9°N 20.5°W | open ocean |
| Sep 16 06:00 | TS extratropical | 46 mph | 1000 mb | 41.9°N 19.8°W | open ocean |
| Sep 16 12:00 | TS extratropical | 46 mph | 1000 mb | 40.9°N 19.5°W | open ocean |
| Sep 16 18:00 | TS extratropical | 46 mph | 1000 mb | 39.9°N 19.3°W | open ocean |
| Sep 17 00:00 | TS extratropical | 40 mph | 1002 mb | 38.9°N 18.9°W | open ocean |
| Sep 17 06:00 | TS | 40 mph | 1002 mb | 38.3°N 18.1°W | open ocean |
| Sep 17 12:00 | TS | 40 mph | 1002 mb | 37.7°N 17.3°W | open ocean |
| Sep 17 18:00 | TS | 46 mph | 999 mb | 36.7°N 15.6°W | open ocean |
| Sep 18 00:00 | TS | 52 mph | 996 mb | 36.7°N 13.1°W | open ocean |
| Sep 18 06:00 | TS | 52 mph | 996 mb | 37.9°N 11.4°W | 121 mi WSW of Cascais, Portugal |
| Sep 18 12:00 | TS | 52 mph | 996 mb | 38.9°N 10.3°W | 49 mi WNW of Cascais, Portugal |
| Sep 18 18:00 | TS | 52 mph | 996 mb | 39.9°N 9.1°W | 14 mi NW of Marinha Grande, Portugal |
| Sep 18 19:00 | TS LANDFALL | 52 mph | 996 mb | 40.0°N 8.9°W | 11 mi S of Figueira da Foz, Portugal |
| Sep 19 00:00 | TD | 35 mph | 1004 mb | 40.6°N 7.6°W | 17 mi ESE of Viseu, Portugal |
⬇ Download track data (CSV) · public-domain NOAA best track
Questions
Alpha made landfall once: 11 mi S of Figueira da Foz, Portugal on September 18, 2020 at 19:00 UTC, as a tropical storm with 52 mph winds.
At its peak on September 15, 2020, Alpha was a tropical storm with maximum sustained winds of 69 mph (111 km/h) and a central pressure of 992 mb. At its first landfall it was a tropical storm.
4.5 days, from September 14, 2020 to September 19, 2020. It travelled about 1,402 miles.
The 6-hourly positions, winds, pressure and wind radii are available as CSV on this page (track.csv) — they come from the NOAA National Hurricane Center's HURDAT2 database and are in the public domain.
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