Public Information Statement
Issued by NWS National HQ

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NOUS41 KWBC 291640

Service Change Notice 15-47
National Weather Service Headquarters Washington DC
1235 PM EDT Tue Sep 29 20159

To:  Subscribers:
   -Family of Services
   -NOAA Weather Wire Service
   -Emergency Managers Weather Information Network
   Other NWS partners and employees

From: Andrew D Stern
     Director, Analyze, Forecast and Support Office

Subject:  Discontinuation of the Experimental Display of the
      Sperry-Piltz Ice Accumulation (SPIA) Index graphics
      from NWS webpages effective October 30, 2015

Effective Friday, October 30, 2015, NWS will discontinue
experimental display of the Sperry-Piltz Ice Accumulation (SPIA)
Index graphics on its WFO webpages. The SPIA Index graphics
depicted the potential impact of freezing rain and wind on
exposed electrical systems. NWS has decided to discontinue the
experimental display and not make the display operational.

 Participating WFOs were:
 WFO Atlanta (FFC)
 WFO Tulsa (TSA)
 WFO Little Rock (LZK)
 WFO Jackson (JAN)
 WFO Nashville (OHX)
 WFO Memphis (MEG)
 WFO Norman (OUN)
 WFO Springfield (SGF)
 WFO Pleasant Hill (EAX)
 WFO St. Louis (LSX)
 WFO Paducah (PAH)

For partners and users who may be interested in continued access
to the SPIA Index, you may contact:

 Sidney K. Sperry
 SPDI Technologies, LLC
 Phone: 405-627-7754

For more information, please contact:

Wendy Levine
National Weather Service
Office of the Chief Operating Officer

National Service Change Notices are online at: is the U.S. government's official web portal to all federal, state and local government web resources and services.