Mon Sep 30 02:41:47 UTC 2024: ## Hurricane Forecast Uncertainty Explained: Cone of Uncertainty and Wind Impacts
The National Hurricane Center (NHC) issues forecasts for tropical cyclones, including their projected paths and intensities. The NHC’s forecast track cone is a tool used to illustrate the uncertainty in these predictions. This cone represents the area where the storm’s center is most likely to pass, with the solid white area depicting the uncertainty for the first three days of the forecast and the stippled area showing uncertainty for days four and five.
Historically, the center of the tropical cyclone has remained within the cone about 60-70% of the time. This means that the storm could deviate from the projected path, potentially affecting areas outside the cone.
It’s crucial to remember that a tropical cyclone is not just a point but a large system. Its effects, including hurricane and tropical storm force winds, can extend hundreds of miles from the center. While the cone indicates the most likely path for the center, hurricane-force winds (74 mph or higher) and tropical storm-force winds (39-73 mph) can occur beyond the cone’s boundaries.
The NHC provides additional information on the distribution of these winds through the Wind History graphic, offering a more detailed view of the potential wind impacts.
The agency also publishes tables and graphs showing the likelihood of various locations experiencing specific wind speeds (34 knots, 50 knots, and 64 knots) based on the forecast track and intensity.
This information helps communities prepare for the potential impacts of a tropical cyclone by highlighting the areas that might be affected, the potential wind speeds, and the uncertainties associated with these forecasts. Remember, the NHC’s forecasts are subject to change, and staying updated with the latest information is essential.
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