189  
NOUS42 KJAX 251403  
PNSJAX  
FLZ021-023-024-030-031-033-035-038-120-124-125-132-133-136>138-  
140-220-225-232-236-237-240-322-325-340-422-425-522-GAZ132>136-  
149-151>154-162-163-165-166-250-264-350-364-260400-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE JACKSONVILLE FL  
1003 AM EDT 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  
 
THE NATIONAL WEATHER SERVICE (NWS) WEATHER FORECAST OFFICES (WFOS)  
IN THE NWS SOUTHERN REGION EAST OF THE MISSISSIPPI RIVER WILL  
COMMENCE WITH HURRICANE THREATS AND IMPACTS (HTI) THREAT GRID  
MOSAIC TESTING ON APRIL 25TH.  
 
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 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:  
 
JESSICA SCHAUER  
NATIONAL TROPICAL SERVICES PROGRAM MANAGER  
MIAMI, FL  
TROPICAL.PROGRAM@NOAA.GOV  
 
NATIONAL PUBLIC INFORMATION STATEMENTS ARE ONLINE AT:  
HTTPS://WWW.WEATHER.GOV/NOTIFICATION/  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab FL Page
The Nexlab GA Page Main Text Page