Daily Sargassum Inundation Risk (SIR v1.5)

By the National Oceanic and Atmospheric Administration (NOAA), and the University of South Florida (USF)

Status: May 4, 2026

Daily Sargassum Inundation Risk fields provide an overview of coastal inundation risk across the Caribbean and Gulf of America region. Show full description

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Risk KMZ
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Gulf of America

Gulf of America
Gulf of America shoreline percentage
Percentage of shoreline
Risk legend

Central America

Central America shoreline percentage
Percentage of shoreline
Risk legend
Central America

Greater Antilles

Greater Antilles
Greater Antilles shoreline percentage
Percentage of shoreline
Risk legend

Lesser Antilles

Lesser Antilles shoreline percentage
Percentage of shoreline
Risk legend
Lesser Antilles

South America

South America
South America shoreline percentage
Percentage of shoreline
Risk legend
These fields are updated on a daily basis.

Sargassum Inundation Risk Contact Information:

Joaquin Trinanes
NOAA/Atlantic Oceanographic & Meteorological Laboratory
4301 Rickenbacker Causeway
Miami, FL 33149, USA
Joaquin.Trinanes@noaa.gov

Matthieu Le Henaff
NOAA/Atlantic Oceanographic & Meteorological Laboratory
4301 Rickenbacker Causeway
Miami, FL 33149, USA
Matthieu.Lehenaff@noaa.gov

Chuanmin Hu
USF, College of Marine Science
140 7th Avenue S, MSL119
St. Petersburg, FL 33701, USA
huc@usf.edu

References: USF Sargassum Watch System, Atlantic OceanWatch
Disclaimer: This is an experimental product and still subject to validation by NOAA/AOML, NOAA/CoastWatch/OceanWatch, and USF.