Overall Green alert Tropical Cyclone for ALPHA-20
in Portugal, Spain

Event summary

Tropical Cyclone ALPHA-20 can have a low humanitarian impact based on the maximum sustained wind speed, exposed population and vulnerability.

GDACS ID TC 1000720
Name ALPHA-20
From - To 18 Sep - 19 Sep
Exposed countries Portugal, Spain
Exposed population No people in Category 1 or higher
Maximum wind speed 83 km/h Tropical storm
Maximum storm surge 0.3 m (18 Sep 18:30 UTC)
Vulnerability Low (Portugal)

GDACS Score

For more info on GDACS alert score click here.
Wind Storm surge Rainfall GDACS score
GDACS NOAA 46 km/h 0.3 m n.a. 0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF n.a n.a. n.a. n.a.
GFS 65 km/h 0.7 m 57 mm 0.5
ECMWF 58 km/h 0.7 m 99 mm 0.5
Maximum expected impact (wind, storm surge and rainfall) using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
Detailed event map. European Union, 2024. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

Atlantic storms reach Greek alphabet for second time ever 9/19/2020 5:42:00 AM.

It's the first time in 15 years that the Altanic hurricane season has surpassed the designated storm name on the list for 2020. This GOES-16 GeoColor satellite image taken August 26 shows Hurricane Laura over the Gulf of Mexico Source: A
...(more)
Atlantic storms reach Greek alphabet for second time ever 9/19/2020 5:28:00 AM.

It's the first time in 15 years that the Altanic hurricane season has surpassed the designated storm name on the list for 2020. This GOES-16 GeoColor satellite image taken August 26 shows Hurricane Laura over the Gulf of Mexico Source: A
...(more)
Running out of storm names, Atlantic season goes Greek 9/19/2020 12:08:00 AM.

This Aqua satellite image taken Friday, Sept. 18, 2020 and provided by NASA, shows subtropical storm Alpha in the eastern North Atlantic Ocean near Portugal's coast. The Atlantic’s record-breaking “crazy” hurricane season got a bizarre Euro
...(more)
National Subtropical Storm Alpha has formed, making history Scripps Na.. 9/18/2020 10:16:00 PM.

This Aqua satellite image taken Friday, Sept. 18, 2020 and provided by NASA, shows subtropical storm Alpha in the eastern North Atlantic Ocean near Portugal's coast. The Atlantic’s record-breaking “crazy” hurricane season got a bizarre Euro
...(more)

View more news

Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (38), (2), WMO (1), INFORM (2),