Updated NHC hurricane graphics improve watch recognition but leave risk perception unchanged

The team at Florida State University’s School of Communication and Department of Geography ran a controlled comparison of the traditional cone-of-uncertainty graphic against the 2024 experimental version that overlays inland watches and warnings. Participants viewed one map or the other and answered questions on threat identification, risk appraisal, and behavioral intent. The new format raised correct identification of watch areas but left ratings of personal danger and plans to evacuate or shelter statistically unchanged.

The persistent cone-size misconception documented in earlier work remains: many viewers still equate the cone’s width with storm size rather than track uncertainty. This cognitive bias was not mitigated by the added inland information. The study therefore isolates a communication gap that accurate forecasts alone cannot close and that graphic redesign has not yet solved.

Related findings from the 2019 National Academies report on weather information and a 2022 Weather, Climate, and Society paper on cone interpretation converge on the same point: visual improvements raise recognition without automatically shifting protective action. The FSU results extend that pattern to the newest NHC product and underscore that risk communication requires layered strategies beyond cartographic tweaks.

Next steps include testing narrative or numeric risk statements paired with the graphic and measuring actual evacuation behavior during the 2026 season. A larger, multi-state field experiment with pre-post behavioral tracking would strengthen causal claims about whether supplementary messaging can convert improved recognition into lives saved.