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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
430 PM 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:
 
 Brad Bryant
 Science and Operations Officer 
 National Weather Service Office 
 Shreveport LA 71109
 Brad.Bryant@noaa.gov
  
 318-631-3669
	 
National Public Information Statements are online at: 
https://www.weather.gov/notification/ 

$$