May 31 2024
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Updated Storm Surge Modeling for North Carolina

By HURREVAC Support

Emergency managers in North Carolina now have access to an updated SLOSH basin in HURREVAC. The associated high-resolution MEOWs are available in the Storm Surge (SLOSH) Explorer to help users understand their storm surge risk for both planning and operational decision-making. The North Carolina basin, identified as nc1, was updated by the National Hurricane Center Storm Surge Unit and released by the National Hurricane Program in May 2024. The nc1 update includes improvements to both resolution and geographic extent, and is intended for use between the South Carolina-North Carolina border and the North Carolina-Virginia border. This new data replaces the previous Wilmington (il3) and Cape Hatteras/Pamlico Sound (ht3) basins. Questions pertaining to nc1 data should be directed to Cody.Fritz@noaa.gov at the National Hurricane Center. General questions about storm surge tools in HURREVAC should be directed to support@hurrevac.com. Other recent updates The River Gages layers in the Conditions tab now link users to NOAA’s NWPS, which recently replaced the AHPS system. The interface and symbology in HURREVAC are unchanged. The Potential Track Area (Error Cone) rates for 2024 have been incorporated for all basins. As a reminder, when using an archived storm, HURREVAC now uses the error statistics from its year of occurrence to show the cone as it would have appeared at the time (more information is in the January announcement). HURREVAC always plots exercise storms and simulated storms with the current season’s error cone definitions, regardless of when it was created or the date of the scenario. The HURREVAC team is currently working on improvements to the display of active storms and the Tropical Weather Outlook, and will have more to share about that project and other planned changes for this season during our annual training webinar series (June 10-14).

May 26 2022
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Updates to Storm Surge Modeling for South Carolina and Georgia

By Karen Townsend

Emergency managers in Georgia and South Carolina should use the updated Charleston basin (CH3) and associated high-resolution MEOWs in HURREVAC to understand their storm surge risk as it relates to both planning and operational decision-making. The Charleston basin, identified herein as CH3, was updated by the National Hurricane Center Storm Surge Unit and released by the National Hurricane Program in February 2022. The CH3 update includes improvements to both resolution and geographic extent, with the intended area of use to extend from the Florida/Georgia border to the South Carolina/North Carolina border. The National Hurricane Program is coordinating with stakeholders and program partners to evaluate impacts to the current Hurricane Evacuation Study in-progress in Georgia. Questions pertaining to CH3 should be directed to Cody.Fritz@noaa.gov at the National Hurricane Center. Questions about the use of the data in HURREVAC should be directed to support@hurrevac.com.