Understanding Harmful Algal Bloom Forecasts: A Guide to HABOFS

Harmful Algal Blooms (HABs) are a growing concern along U.S. coastlines, impacting marine ecosystems, public health, and local economies. The National Centers for Coastal Ocean Science (NCCOS) has developed the Harmful Algal Bloom Operational Forecasting System (HABOFS) to provide timely and accurate forecasts of HAB occurrences.

What Are Harmful Algal Blooms?

HABs occur when algae proliferate rapidly, producing toxins harmful to marine life and humans. These blooms can lead to fish kills, shellfish contamination, and respiratory issues in humans. Common culprits include Karenia brevis, responsible for red tides in the Gulf of Mexico, and cyanobacteria in freshwater systems.

How Does HABOFS Work?

HABOFS integrates satellite imagery, field observations, and oceanographic models to predict HAB events. It provides:

• Nowcasts: Current assessments of HAB presence and intensity.

• Short-term forecasts: Predictions up to five days ahead, aiding in immediate response.

• Seasonal forecasts: Long-term projections to inform planning and resource allocation.

These forecasts are region-specific, addressing local ecological and economic needs. For instance, the Florida and Texas HABOFS focuses on respiratory irritation forecasts, while the Lake Erie HABOFS targets cyanobacteria blooms.

Why Are HABOFS Forecasts Important?

Early detection and forecasting of HABs enable:

• Public health protection: Issuing advisories to prevent exposure.

• Environmental management: Guiding beach and shellfish bed closures.

• Economic planning: Minimizing impacts on fisheries and tourism.

Accessing HABOFS Data

HABOFS data is accessible through the National Centers for Environmental Information (NCEI). Users can explore archived data, view processed satellite imagery, and access forecast outputs for various regions. This information supports informed decision-making for stakeholders across affected communities.

Conclusion

HABOFS plays a crucial role in mitigating the impacts of harmful algal blooms by providing accurate and timely forecasts. Its region-specific approach ensures that communities can effectively prepare for and respond to these environmental challenges.

(ncei.noaa.gov)