Overall Green Tropical Cyclone alert for ALVIN-25 in Mexico from 28 May 2025 21:00 UTC to 31 May 2025 15:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green alert Tropical Cyclone for ALVIN-25

in Mexico

Event summary

Tropical Cyclone ALVIN-25 can have a low humanitarian impact based on the maximum sustained wind speed, exposed population and vulnerability.

GDACS ID	TC 1001163
Name	ALVIN-25
From - To	28 May - 31 May
Exposed countries	Mexico
Exposed population	No people in Category 1 or higher
Maximum wind speed	93 km/h Tropical storm
Maximum storm surge	0.1 m (31 May 04:00 UTC)
Vulnerability	Medium (Mexico)

GDACS Score

For more info on GDACS alert score click here.

	Wind	Storm surge	Rainfall	GDACS score
GDACS NOAA	93 km/h	0.1 m	n.a.	0.5
Single TC: maximum expected impact (wind, storm surge, rainfall)
HWRF	94 km/h	0.4 m	325 mm	0.5
GFS	n.a	n.a.	n.a.	n.a.
ECMWF	72 km/h	n.a.	369 mm	0.5

Maximum expected impact (wind, storm surge and rainfall) using different data sources.

Virtual OSOCC

Meteo assessment

Satellite products

Analytical products

Mexico - Tropical storm ALVIN (ECHO 04 Jun 2025)Fri, 30 May 2025 09:21

A new tropical storm (the first of the Eastern North Pacific season) named ALVIN formed over the Ocean on 28 May in the evening (UTC) and started moving north toward the Gulf of California and the Baja California Sur state (western Mexico) as a tropical storm. On 30 May at 3.00 UTC, its centre was located offshore approximately 780 km south of the Cabo San Lucas city (the southern Baja California Sur state), with maximum sustained winds of 95 km/h.
ALVIN is forecast to continue moving northward over the Ocean and to pass very close (approximately 10 km east) to the southernmost area of the Baja California Sur state on 1 June in the morning (UTC) as a tropical depression.
Rainfall, strong winds and storm surges are forecast over north-western Mexico and the southern Baja California Sur state starting from 31 May.

Detailed event map. European Union, 2025. 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

Haiti: Latin America & The Caribbean Weekly Situation Update as of 30 .. 5/30/2025 8:31:00 PM.

KEY FIGURES 21K people without power as a rare tornado strikes southern Chile; 2.1K suspected cases of cholera in Haiti since late December 2024; 21.2K people affected by rain-related incidents in Antioquia, Colombia. MEXICO: TROPICAL STORM

...(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

Analytical products

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (40), (2), DesInventar (1), WMO (1), INFORM (2),

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
The designations employed and the presentation of material on the map do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.