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NOUS41 KWBC 181657

Technical Implementation Notice 14-38: Corrected
National Weather Service Headquarters Washington DC
1258 PM EDT Thu Sep 18 2014

To:       Subscribers:
          - Family of Services
          - NOAA Weather Wire Service
          - Emergency Managers Weather Information Network
          - NOAAPORT
          Other NWS Partners and NWS Employees

From:     Mark Tew
          Chief, Marine and Coastal Weather Services Branch
          Eli Jacks
          Chief, Fire and Public Weather Services Branch

Subject:  Corrected: Extension of Forecast for the Snow and Ice
          Accumulation Grids and Significant Wave Height Grids
          in the National Digital Forecast Database (NDFD)
          Effective October 15, 2014

Corrected PDD content

Corrected to add specific urls for each snow, ice and
significant wave height Product Description Document (PDD):


Effective Wednesday, October 15, 2014, at 1400 Coordinated
Universal Time (UTC), the NDFD Snow and Ice Accumulation
forecast grids will be extended in time from 48 hours to 72
hours and the NDFD Significant Wave Height forecast grids will
be extended in time from 120 hours to 144 hours. Issuance times
start at 00 UTC on Day 1 at NWS Weather Forecast Offices (WFO)
that currently issue these grids. A list of issuing WFOs and
more information regarding these elements is available online at
the PDD links above.

With this implementation, these forecasts will be available from
NDFD in the following standard methods:

- GRIdded Binary version 2 (GRIB2) files via Hypertext Transfer
  Protocol (HTTP) and File Transfer Protocol (FTP)

- eXtensible Markup Language (XML) via Simple Object Access
  Protocol (SOAP) and Representational State Transfer (REST)

- Graphics via web browser

Customers who use the NDFD in XML via web service or the online
graphical NDFD images can use the same methods they currently
use to acquire these new operational elements.

General information on accessing and using NDFD elements is
online at:


If October 15, 2014, is declared a critical weather day, this
implementation may be postponed.  In that case, partners and
users will be notified of that decision via an updated Technical
Implementation Notice (TIN) as far in advance as possible.

For general questions regarding NDFD data, please email:


For technical questions regarding NDFD data, please contact:

  David Ruth
  Chief, Mesoscale Prediction Branch
  NOAA/NWS Office of Science and Technology
  Silver Spring, Maryland 20910

For general questions regarding the Snow and or Ice Accumulation
grids or this notice, please contact:

  Andy Horvitz
  Fire and Public Weather Services Branch
  NOAA/NWS Office of Climate Water and Weather Services
  Silver Spring, Maryland 20910

For general questions regarding Significant Wave Height grids,
please contact:

  David Soroka
  Marine and Coastal Weather Services Branch
  NOAA/NWS Office of Climate Water and Weather Services
  Silver Spring, Maryland 20910

National Technical Implementation Notices are online at:



National Weather Service
Last Modified: August 31, 2005
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