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LIVE Storm Alpha

Date Time Type Wind Pressure
UTC mph mb
Sep 1906:00L30
Sep 1818:00S45998
Sep 1812:00S50999
Sep 1806:00E50996
Sep 1800:00E50996
Sep 1718:00E451000
Sep 1712:00E401000
Sep 1706:00E45999
Sep 1700:00E45999
Sep 1618:00E50999
Sep 1612:00E50998
Sep 1606:00E50998
Sep 1600:00E50998
Sep 1518:00E501000
Sep 1512:00E60993
Sep 1506:00E65990
Sep 1500:00E65992
Sep 1418:00E60992
Sep 1412:00E40992

Subtropical Storm Alpha 2020

Last Modified:

LIVE satellite images and tracking maps of Subtropical Storm Alpha 2020. Current wind speed 45mph. Max 50mph.

Radar data from Portugal indicated that Alpha made landfall at about 18:30 UTC with a fairly impressive spiral band signature. It is estimated that the winds were 45 knots at landfall, and a sustained 10-minute wind of 39 knots was recorded at Sao Pedro de Noel. The minimum central pressure is analyzed at 996 mb at landfall due to a 999 mb value at Monte Real with a 31-knots sustained wind. Since these data were recorded, the radar presentation has deteriorated, and satellite imagery suggests the small cyclone could be de-coupling from its mid-level center. The winds are assumed to have come down, with a current estimate of 40 knots. The small cyclone should continue to move northeastward at about 15 knots for the next 12-24 hours before dissipating over northern Spain or the Bay of Biscay. No significant changes are required to the forecast for track or intensity.

Additional information on the hazards from this system can be found in products from the Portuguese Institute for Sea and Atmosphere at https://www.ipma.pt.

Information provided by NHC.

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2020

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