Other product enhancements include Hawaii Storm Surge Watches & Warnings
, NOAA’s National Hurricane Center is implementing two new tropical products and services: a new operational hurricane track cone map, and new storm surge alerts for Hawaii. “These improvements empower communities to prepare earlier and more effectively for dangerous hazards from tropical storms and hurricanes,” said Michael Brennan, director, NOAA’s National Hurricane Center.
The tropical cyclone graphic helps communities remain vigilant from the dangers posed by wind hazards associated with hurricanes and tropical storms, including in locations away from the coast. In 2026, the forecast cone will now include tropical storm and hurricane watches and warnings for inland areas. The additional information follows a successful experimental phase last year, which demonstrated the improved forecast cone enabled inland communities to better understand and prepare for the danger posed by tropical cyclone winds. An example of the 2026 version of the cone graphic for Hurricane Milton that shows inland watches and warnings.What to know about the new cone graphic: Incorporates all land-based tropical storm and hurricane watches and warnings in effect for the continental United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands;Legend depicts symbols for areas where a hurricane watch and tropical storm warning are both in effect ; andNHC will also be introducing a new experimental version of the NHC’s Tropical Cyclone Track Forecast Cone. Since its debut in 2002, the cone has shown where the tropical cyclone’s forecast center is likely to go, based on past forecast calculations. Beginning in 2026, the experimental cone will use ellipses anchored at each NHC forecast point, allowing for the experimental cone to capture a range of possibilities for both the speed and direction of the tropical cyclone’s forecast path. NHC will experiment changing two aspects of the cone using ellipses to account for errors in speed and direction, and the cone will include 90% of forecast track possibilities, instead of the traditional 67% forecast error. for full and intermediate advisories. During the experimental phase, technical issues could affect the timeliness or availability of the graphic.The new products and services for the Hawaiian Islands include storm surge watches and warnings and a peak storm surge graphic. This expands the NHC’s storm surge products and services that are currently serving the U.S. East Coast and Gulf of America coastline, Puerto Rico and the U.S. Virgin Islands.Deliver probability-based forecasts of water and storm surge levels within 72 hours of hurricane impacts; Are publicly available for the main Hawaiian Islands. These new and improved products and services are a continuation of NHC’s focus to improve public safety messaging and advance the public’s understanding of hazards associated with tropical storms.
Hurricane Season Hurricanes Tropical Storms Tropical Cyclones Forecasting
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