Key moments
On March 24, 2026, the National Hurricane Center (NHC) announced a proposal for significant updates to its tropical cyclone “cone of uncertainty” forecast graphic, a crucial tool in communicating storm paths to the public. This initiative is aimed at enhancing the clarity and accuracy of storm track forecasts, particularly as the 2026 hurricane season approaches.
The current cone of uncertainty is based on a 67% confidence interval, meaning that the storm’s center remains within the cone about two-thirds of the time. However, the proposed changes would increase this confidence level to 90%, reflecting a broader range of possible track outcomes. This shift is designed to better inform the public and emergency management officials, allowing for more effective preparation and response to impending storms.
One of the most notable aspects of the proposed updates is that the experimental cone will be approximately 23% wider than the current version. This adjustment is expected to provide a more realistic representation of storm paths, particularly for slow-moving storms that can pose significant risks to affected areas. Jamie Rhome, a key figure at the NHC, noted, “This would partially address the longstanding problem with the way people naturally viewed the cone, which was not in line with how it was created or formulated.”
The NHC’s cone of uncertainty track maps have been in use since 2002, with only minor adjustments made until around 2017. As the frequency and intensity of hurricanes have increased, the need for clearer communication has become more pressing. The proposed changes are part of a broader effort to adapt to evolving weather patterns and improve public understanding of storm risks.
The experimental cone will be produced and published shortly after the current operational cone during each forecast cycle of the 2026 season. This timely release is intended to ensure that the public has access to the most accurate and up-to-date information as storms develop. Tom Sorrells, a meteorologist, expressed his initial skepticism about the new design, stating, “I looked at the new cone, and I thought it looked like a leprechaun threw up. Now, I think I can use it to message better. I’m into it now.”
The hurricane season runs from June 1 through November 30, a period during which the NHC plays a critical role in monitoring and forecasting tropical cyclones. As communities prepare for the upcoming season, the proposed updates to the cone of uncertainty could significantly impact how residents perceive and respond to storm threats.
As the NHC continues to refine its forecasting tools, the emphasis remains on improving public safety and ensuring that communities are well-informed. The proposed changes to the cone of uncertainty represent a proactive step towards achieving these goals, fostering a better understanding of storm dynamics and enhancing preparedness efforts across the board.
