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Public Information Statement
National Weather Service Huntsville AL
927 AM CDT Thu Apr 25 2024

To:        Subscribers:
            -NOAA Weather Wire Service
            -Emergency Managers Weather Information Network
            -NOAAPort
            Other NWS Partners and NWS Employees

From:      Greg Schoor, Chief
            Marine, Tropical and Tsunami Services Branch

Subject:   Hurricane Threats and Impacts (HTI) Mosaic Testing on
            April 25, 2024

Weather Forecast Offices (WFOs) in the National Weather Service (NWS)
Southern and Eastern Regions will commence with Hurricane Threats and
Impacts (HTI) threat grid mosaic testing on Thursday, April 25.  Testing
will begin at approximately 1500 UTC.  Test activities will take
approximately 1 hour; however, NWS dissemination systems may take up to an
hour and a half to purge all test data.  All test data is expected to be
cleared by 1730 UTC.

For the test, HTI grids will be created for hurricane Wind Threat, Storm
Surge Threat, Flooding Rain Threat, and Tornado Threat at each
participating WFO.  Those grids are stitched together into storm-scale HTI
graphics.  The HTI Mosaic graphics are available in Keyhole Markup Language
(KML) format on the following webpage:
https://www.weather.gov/hti

The mosaics are also available through the National Digital Forecast
Database and on web pages hosted by the Weather Forecast Offices (WFOs)
affected by the tropical cyclone.  These webpages use the following URL
format, where wfo should be replaced with the 3 digit identifier for the
WFO of interest:

NWS Eastern Region WFOs:
https://www.weather.gov/wfo/tropical#hti

NWS Southern Region WFOs:
https://www.weather.gov/srh/tropical?office=wfo#hti

More details on HTI can be found in the Product Description Document:
https://www.weather.gov/media/srh/tropical/PDD_HTI.pdf

Periodic software and hardware testing in preparation for tropical cyclone
events will continue during the remainder of 2024.

For more information, please contact:

 Todd Barron
 Meteorologist in Charge
 National Weather Service Office
 Huntsville, AL
 Todd.Barron@noaa.gov

National Public Information Statements are online at:
https://www.weather.gov/notification/

GH


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