Hurricane Forecast Maps Improve Clarity, But Understanding Remains a Challenge

Updated hurricane forecast maps now make it easier to pinpoint storm-threatened zones. However, new research highlights a significant issue: even when people can identify areas under hurricane watches, they might not perceive an increased risk or feel motivated to take protective actions.

Florida State University researchers investigated whether modifications to the National Hurricane Center's (NHC) forecast graphics enhance public understanding of hurricane threats. The study involved faculty from the School of Communication and the Department of Geography.

The team assessed an experimental graphic designed to expand the traditional hurricane forecast cone. This new version includes tropical storm and hurricane watches and warnings for inland areas, addressing the historical tendency of the familiar cone to focus primarily on coastal regions, despite dangers extending far inland.

Results were mixed. While the updated graphic helped individuals without specialized weather knowledge identify inland areas under hurricane or tropical storm watches, it did not substantially alter their perceived storm danger or their intention to prepare. Participants also showed no improvement in recognizing areas covered by storm warnings.

The NHC implemented this updated format in 2024. Findings were published in the American Meteorological Society journal Weather, Climate, and Society.

Assistant Professor Elizabeth Ray, the study's lead author, stated, "The National Hurricane Center has made thoughtful changes to improve hurricane information communication. We wanted to know if these changes actually help people understand the risks presented in the graphics."

To understand public interpretation of hurricane forecasts, the researchers surveyed Florida and Georgia residents. Participants viewed either the standard hurricane cone graphic or the experimental version with inland threat information.

Those who saw the revised map more accurately identified locations under hurricane or tropical storm watches. However, this improved recognition of watch areas did not translate to heightened concern about potential danger or a stronger intent to take safety precautions.

The study also revealed a persistent misconception about the hurricane 'cone of uncertainty.' Many mistakenly interpret its width as an indicator of the storm's size, rather than understanding it signifies the uncertainty in the projected track.

"For years, research shows people often mistake a wider cone for a bigger storm," Ray noted. "Our findings suggest this misconception is difficult to overcome, even with an updated graphic."

The NHC introduced its expanded forecast graphic in 2024 to emphasize that hurricane dangers are not confined to the coast. Flooding, tornadoes, and destructive winds can affect inland areas, making it crucial for residents beyond coastal evacuation zones to grasp their potential exposure.

By incorporating inland hurricane and tropical storm watches and warnings into the traditional forecast cone, the updated graphic offers a more comprehensive view of potential dangerous conditions.

However, the study indicates that adding useful information to a forecast does not automatically increase personal risk awareness or prompt appropriate responses.

The researchers emphasized that their findings do not question the accuracy of NHC predictions, which they deem highly accurate. Instead, the results highlight the challenge of presenting complex meteorological data in a way that people can easily interpret and use for safety decisions.

"Our focus wasn't on the science's quality," said co-author Patrick Merle, professor and director of the School of Communication. "The science is excellent. The question is how we communicate it so non-meteorologists understand the risks. If people find information credible but still don't understand it well enough to act, communication has failed. The aim is to give people usable information for safety."

The findings underscore the need to consult more than just a single forecast image when preparing for a hurricane. While the cone provides valuable information about an expected path, it cannot convey every hazard a community might face.

The researchers advise using hurricane forecast graphics alongside local weather predictions and detailed impact information. Understanding specific local threats and recommended protective steps provides a more practical basis for decision-making.

"Our findings remind us that one graphic tells only part of the story," Ray said. "Don't rely solely on the cone. Combine it with clear, local information on expected impacts and necessary actions. This offers a complete picture of what the storm could mean for your area and what to do next."

The study was funded by an internal Florida State University SEED grant and involved discussions with the NHC, which provided the experimental forecast graphics.

Bradford Johnson, an assistant professor in the Department of Geography, also co-authored the study.