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NOAA Harmful Algal Bloom Operational Forecast System (HAB-OFS)

Additional HAB Resources

In April 2004, a workshop was held to explore the needs of the user community with regard to HABs and ocean observations within the context of detecting, predicting, and forecasting HAB events.

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Action Plan for Harmful Algal Blooms and the Gulf of Mexico Coastal Ocean Observing System: Results from a Regional Workshop

Resources by Region

  • Northeast (Maine, Massachusetts, New Jersey, New York)
  • Mid-Atlantic (Maryland, Delaware, Virginia)
  • Great Lakes (Minnesota, Wisconsin, Illinois, Indiana, Michigan, Ohio, Western Pennsylvania, Western New York)
  • Southeast (North Carolina, South Carolina)
  • Gulf of Mexico (Florida, Alabama, Mississippi, Louisiana, Texas)
  • West Coast (Alaska, California, Hawaii, Oregon, Washington)

Other Resources



Maine Red Tide Information System
Interactive access to red tide closure data

Maine Department of Marine Resources, Bureau of Resource Management
Redtide and shellfish sanitation status information

Maine Phytoplankton Monitoring Program
Citizen volunteer monitoring program for HABs in the Gulf of Maine


Massachusetts Division of Marine Fisheries
Protocols for monitoring

Massachusetts Department of Public Health
Permit procedures and food safety

The Harmful Algae Page
Information about HAB species found in New England waters

New Jersey

New Jersey Department of Environmental Protection, Division of Marine Water Monitoring
Procedures for water quality and shellfish monitoring and status

New Jersey Department of Environmental Protection, Division of Science Research and Technology
Brown tide status and general information

Rutgers Grant F. Walton Center for Remote Sensing Brown Tide Monitoring
Maps of brown tide events in coastal New Jersey

New York

New York State Department of Environmental Conservation
Shellfish closure information

New York Sea Grant – Brown Tide Research Initiative
General brown tide information and status reports

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Mapping HABs in the Chesapeake Bay
HAB prediction tool and weekly NOWCASTS of likely bloom activity for Karlodinium in Chesapeake Bay.


Maryland Department of Natural Resources
Reports of HAB events in Maryland

Eyes on the Bay
Interactive access to Chesapeake monitoring station data including HAB events

Maryland Department of the Environment
Notices of shellfish closures and fishing advisories


Delaware Department of Natural Resources and Environmental Control
Includes basic information about Pfiesteria including its impacts on humans and how to recognize signs of Pfiesteria in the water.


Virginia Harmful Algal Bloom Task Force
Toll-free hotline for Harmful Algal Bloom information

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Great Lakes

NOAA Center of Excellence for Great Lakes and Human Health
Sampling results from the HAB Event Response program

Harmful Algae Blooms in Lake Erie - HAB Bulletin (NOAA Center of Excellence for Great Lakes and Human Health)

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North Carolina

North Carolina Department of Environment and Natural Resources, Division of Water Quality
Monitoring data and fish kill maps for area rivers

Shellfish Polluted Area Proclamations from the North Carolina Department of Environment and Natural Resources, Division of Marine Fisheries
Shellfish closure status

North Carolina Department of Health and Human Services Occupational and Environmental Epidemiology Program
Information about possible health risks from HABs and fish kills.

South Carolina

South Carolina Department of Health and Environmental Control
Monitoring and shellfish closure status

Southeast Phytoplankton Monitoring Network
Volunteer monitoring and maps of conditions

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Gulf of Mexico

Gulf of Mexico Program: Aquatic Mortality Response Network
Recent mortality events, including HAB-related mortalities

Harmful Algal Blooms Observing System (HABSOS)
Interactive maps of near real-time data relevant to HAB conditions and links to HAB bulletins

Florida Aquatic Toxins Program
Comprehensive information on public health impacts on HABs found in Florida


Florida Fish and Wildlife Conservation Commission's Fish and Wildlife Research Institute
Current red tide status for the Florida coast, including maps

Mote Marine Red Tide Update Page
Local conditions for the southwest Florida coast

Florida Department of Agriculture and Consumer Services
Shellfish closure status

Solutions to Avoid Red Tide
Information about HABs on the southwest Florida coast

University of South Florida's College of Marine Science Center for Prediction of Red Tides
Coupled biophysical 3-D models and experimental products to track and predict harmful algal blooms in the southeastern USA


Texas Parks & Wildlife Department
Texas coast red tide status reports

Department of State Health Services
Shellfish closures due to red tide

Texas Red Tide Rangers
A dedicated volunteer group formed and trained by Texas Sea Grant

Texas General Land Office
Access to real-time wind and currents along the Texas coast


Mississippi Department of Marine Resources
Shellfish closure status

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West Coast

Northwest Fisheries Science Center - HAB Program
Marine biotoxins and HAB page with links to the NWFSC West Coast Newsletter and Red Tides Newsletter; lists biotoxin hotlines for Alaska, British Columbia, California, Hawaii, Oregon, Washington


Alaska Department of Environmental Conservation Division of Environmental Health
The general link to shellfishing current reports and closures


California Department of Health Services - Preharvest Shellfish Protection and Marine Biotoxin Monitoring Program
Advisories and reports for marine biotoxin monitoring


Oregon Department of Human Services, Environmental Toxicology Program
Beach Monitoring Program and Fish and Blue-Green Algae Advisories


Washington State Department of Health
Interactive map of recreational shellfish beach closure status

Washington State Department of Health, Division of Environmental Health
Monitoring program information and biotoxin bulletins

Washington Department of Fish and Wildlife
Shellfish harvesting regulations and status

Olympic Region Harmful Algal Blooms Partnership
Information about HABs and their effects, as well as outreach, education, and monitoring efforts

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United States Government Agencies

Center for Disease Control

Harmful Algal Bloom website
Pfiesteria piscicida (When opening the PDF, please wait for a bit) and other harmful algae information from the Health Studies Branch

Department of the Interior

National HAB Research and Monitoring Strategy
Objectives of federal agency initiatives (DOI, CDC, FDA, USDA, EPA, NOAA, NIEHS) concerning public health threats of Pfiesteria

Environmental Protection Agency

Office of Water
Maps depicting Harmful Algal Bloom (HAB) outbreaks known before and after 1972

Pfiesteria FAQ fact sheet
What You Should Know About the Harmful Algae Pfiesteria piscicida

Food and Drug Administration

Bad Bug Book
A handbook chapter on various shellfish-associated toxins


NASA's Ocean Color Data & Resources
Ocean color and satellite imagery information

National Oceanic and Atomospheric Administration

Harmful Algal BloomS Observing System (HABSOS)
Data collection and distribution system for HAB information in the Gulf of Mexico

Coastal Ocean Program
HAB research initiatives, including The Ecology and Oceanography of Harmful Algal Blooms (ECOHAB)

CoastWatch Program – Ocean Product Server
Satellite remote sensing data, including surface winds, ocean color, and sea surface temperature

National Environmental Satellite, Data, and Information Service (NESDIS)
NESDIS provides access to global environmental data used in the forecasting of HABs, weather, and ocean conditions

nowCoast GIS Web Mapping Portal to Near-Real-Time Coastal Data and Forecasts
Latest surface weather/ocean observations, sea surface temperature and surface wind analyses, surface wind forecasts

Office of Response and Restoration
A data server for real-time oceanographic currents in the Gulf of Mexico

National Centers for Coastal Ocean Science: Harmful Algal Bloom and Hypoxia Research and Control Act
Federal legislation concerning HABs; drafts available in Adobe Acrobat format here.

Sea Grant
Sea Grant Pfiesteria briefing: audio clips of presentations from a 1998 forum on the public policy challenges surrounding Pfiesteria

NOAA's National Ocean Service
The Nation's Ocean and Coastal Agency

Podcasts: November 2013 - Diving Deeper: Forecasting Harmful Algal Blooms
Curious about how (and why) scientists forecast harmful algal blooms? Today's Diving Deeper interview with Allison Allen explores this topic!

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International Resources

Intergovernmental Oceanographic Commission (IOC)

UNESCO IOC Harmful Algal Bloom Programme
International initiative for HAB research; access to Harmful Algae Event Database

Marine Geological and Biological Habitat Mapping (GEOHAB)
Report from International Oceanographic Commission (IOC)/Supply-Chain Operations Reference-model (SCOR) workshop (PDF)

The freely available Adobe Acrobat® Reader® is needed to view and print PDF files.


Commonwealth Scientific and Industrial Research Organization (CSIRO) Microalgae Research Center
Organization for scientific and industrial research for Australia that offers a microalgae supply service


Dinoflagellate classification database

Fisheries and Oceans Canada
Fishery notices for the Pacific region by date or fishery name; also provides access to information on regulations and the fisheries management home page


Hong Kong SAR - Hong Kong Red Tide Information Network


Finnish Institute of Marine Research algae bloom information for the Baltic Sea


French Institute for Marine Research and Exploitation
Ten-year maps of toxins and monitoring data in Western Europe

New Zealand

Cawthron Institute
HAB site for this private, nonprofit research center


Maps and currents status of HABs in Norway

South Africa

University of the Western Cape Department of Botany
"The World of Algae": Basic introduction to algae; includes links to international conferences and phycological societies


Göteborg University Department of Marine Botany
Checklist of phytoplankton in the Skagerrak-Kattegat

United Kingdom

Emiliania huxleyi Home Page
Web site devoted to E. huxleyi including life cycle, ecology, and biogeochemical impacts

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Other Web Sites of Interest

The Harmful Algae Page
Comprehensive HAB information; includes current global HAB news, photographs, general information, and links to national and international monitoring and mitigation plans

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If you would like to have your HAB Web site posted here, please e-mail the NOAA CO-OPS from the CO-OPS Contact list

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services