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Public Information Statement
National Weather Service New Orleans LA
1056 AM CDT Mon Apr 20 2020

To:        Subscribers:
           -NOAA Weather Wire Service
           -Emergency Managers Weather Information Network
           -NOAAPort
           Other NWS Partners and NWS Employees
 
From:      Michael Angove, Acting Chief
           Marine, Tropical and Tsunami Services Branch 
        
Subject:   Hurricane Threats and Impacts (HTI) Mosaic Testing on 
           or about April 21, 2020
 
The NWS Weather Forecast Office (WFO) in Honolulu and WFOs in the NWS Southern Region and in the NWS Eastern Region will commence with Hurricane Threats and Impacts (HTI) threat grid mosaic testing on Tuesday, April 21.  Wednesday, April 22 has been designated as a backup test date in the event that testing cannot be conducted on the 21st.   

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, Hurricane Storm Surge Threat, Hurricane Flooding Rain Threat, and Hurricane Tornado Threat.  These grids are sent to the National Digital Forecast Database (NDFD) and can be seen on the NDFD web viewer at:
https://digital.weather.gov 

The Product Description Document for these threat grids can be found here:
https://www.weather.gov/media/srh/tropical/PDD_HTI.pdf 

HTI grids are created by WFOs for their county warning area and mosaicked together to form a more geographically consistent depiction of the threat posed by hurricane hazards.  The HTI mosaics can be found in kml format at:
https://weather.gov/hti 

When populated HTI grids are posted, they also can be found on the WFO Tropical Web Portal page linked below under the “Threats and Impacts” tab:
https://www.weather.gov/srh/tropical

NWS WFOs participating in this HTI Mosaic Test are listed below by NWS Region:

NWS Eastern Region:
Blacksburg/Roanoke, VA (RNK)
Caribou, ME (CAR) 
Charleston, SC (CHS) 
Columbia, SC (CAE) 
Greenville-Spartanburg, SC (GSP) 
Mount Holly, NJ (PHI) 
Newport/Morehead City, NC (MHX) 
New York, NY (OKX)
Raleigh-Durham, NC (RAH) 
Sterling, VA (LWX) 
Wakefield, VA (AKQ)

NWS Pacific Region:
Honolulu, HI (HFO)

NWS Southern Region:
Atlanta, GA (FFC)
Austin-San Antonio, TX (EWX)
Birmingham, AL (BMX)
Brownsville, TX (BRO)
Corpus Christi, TX (CRP)
Fort Worth, TX (FWD)
Houston, TX (HGX)
Jackson, MS (JAN)
Jacksonville, FL (JAX)
Key West, FL (KEY)
Lake Charles, LA (LCH)
Little Rock, AR (LZK)
Melbourne, FL (MLB)
Miami, FL (MFL)
Mobile, AL (MOB)
Morristown, TN (MRX)
New Orleans, LA (LIX)
San Juan, PR (SJU)
Shreveport, LA (SHV)
Tallahassee, FL (TAE)
Tampa Bay Area, FL (TBW)

Periodic software and hardware testing in preparation for hurricane events will continue during the remainder of 2020. 

For more information, please contact:
 
  Mike Koziara
  Science Operations Officer
  National Weather Service Office
  New Orleans/Baton Rouge
  Mike.Koziara@noaa.gov
  
  985-649-0429
	 
National Public Information Statements are online at: 
https://www.weather.gov/notification/ 

$$