NDFD Technical Notices

Tech Doc # Year Subject
SCN20-52 2020 Updated: Snow level grids for select CONUS WFOs as an element in the National Digital Forecast Database will become operational effective December 15, 2020
SCN20-52 2020 Snow level grids for select CONUS WFOs as an element in the National Digital Forecast Database will become operational effective June 15, 2020
PNS19-24 2020 Updated: Soliciting comments on experimental provision of Wet Bulb Globe Temperature (WBGT) grids in the NDFD through September 30, 2020
PNS19-02 2020 Updated: Soliciting Comments until April 30, 2021, on Addition of Probabilistic Snow Grids for select WFOs as an experimental element in NDFD for CONUS
SCN19-69 2019 Updated: Adjusting Issuance Times for Oceanic Gridded Marine Offshore and High Seas Forecasts in NDFD Effective on or about December 10, 2019
PNS19-24 2019 Soliciting comments on experimental provision of Wet Bulb Globe Temperature (WBGT) grids in the NDFD through September 30, 2020
PNS19-02 2019 Soliciting comments until April 30, 2019, on Addition of Probabilistic Snow Grids for select WFOs as an experimental element in NDFD for CONUS
PNS18-121 2018 Updated: Extending Forecast for Quantitative Precipitation Forecast, Ice Accumulation and Snow Accumulation Grids in NDFD effective February 5, 2019
PNS18-30 2018 Comments solicited on addition of snow level grids for select CONUS WFOs as an experimental element in the NDFD through April 30, 2019
PNS15 2018 Updated: Continuing experimental status in offshore and high seas gridded forecasts from NHC TAFB and offshore gridded forecasts from OPC in the Pacific Basin through December 31, 2018
SCN18-84 2018 Corrections to Gridded Binary Version 2 (GRIB2) Encoding Parameters for National Digital Forecast Database (NDFD) Products Effective October 30, 2018
SCN18-74 2018 Transition NDFD 3 km Alaska Region (AR) Gridded Forecasts to Operational Status Effective August 30, 2018
SCN18-22 2018 Updated: Experimental grids for the 0.25 inch (~6 mm)threshold of the Day 4-7 Winter Weather Outlook will become an operational element in the NDFD for the CONUS effective on or about April 3, 2018
SCN17-117 2018 Updated: Transition to operational status of offshore and high seas gridded forecasts from the NHC TAFB and the offshore gridded forecasts from the OPC in the Atlantic Basin effective February 6, 2018
SCN17-117 2017 Transition to operational status of offshore and high seas gridded forecasts from the NHC TAFB and the offshore gridded forecasts from the OPC in the Atlantic Basin effective December 12, 2017
TIN16-34 2016 Addition of grids for the 0.25 inch (~6 mm) threshold of Experimental Day 4-7 Winter Weather Outlook as an experimental element in the National Digital Forecast Database (NDFD) for the CONUS effective October 11, 2016
TIN16-28 2016 Corrected: Transition of the 6km Alaska Forecast Grids from Experimental to Operational Status Effective August 24, 2016
PNS16-27 2016 Solicitation of comments on experimental National Digital Forecast database (NDFD) 3km Alaska Region (AR) Forecast Grids effective August 24, 2016
SCN16-08 2016 Corrected: Experimental Forecast of Reference Crop Evapotranspiration (FRET) for Short Canopy Vegetation Will Become Operational Effective April 13, 2016
PNS15 2015 Amended: Experimental Period Extended until July 31, 2016, for the Experimental Gridded Marine Offshore and High Seas Forecasts in the National Digital Forecast Database (NDFD)
PNS15 2015 Soliciting Comments on an Experimental Full Resolution National Digital Forecast Database (NDFD) eXtensible Markup Language (XML) Web Service for the Conterminous United States (CONUS) from September 29, 2015, through February 1, 2016
PNS15 2015 Soliciting Comments on an Experimental Precipitation Potential Index to be Added to the National Digital Forecast Database (NDFD) for the Conterminous United States (CONUS) from September 29, 2015, through December 31, 2015
TIN15-28 2015 Amended: Increasing Frequency of Updates to the National Digital Forecast Database (NDFD) Effective Tuesday, June 30, 2015
TIN15-16 2015 Tropical Cyclone Threat Grids in the National Digital Forecast Database will Transition to Operational Effective June 1, 2015
TIN15-10 2015 Transition of the National Digital Forecast Database Map Viewer from Experimental to Operational Status Effective March 31, 2015
PNS14 2014 Comment Period on Experimental Forecast of Reference Crop Evapotranspiration (FRET) for Short Canopy Vegetation Through December 5, 2014
TIN14-38 2014 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
PNS14 2014 Amended: Adjusting Issuance Times for Experimental Gridded Marine Offshore and High Seas Forecasts in the National Digital Forecast Database (NDFD) Effective September 16, 2014
PNS14 2014 Comments Solicited from August 19, 2014, through November 30, 2014 on Experimental Tropical Cyclone Threat Grids Added to the NDFD
TIN14-15 2014 Amended: Increasing Resolution in the National Digital Forecast Database (NDFD) Effective Tuesday, August 19, 2014
TIN14-15 2014 Increasing Resolution in the National Digital Forecast Database (NDFD) Effective Tuesday, August 19, 2014
TIN14-14 2014 Combining fine resolution files in the experimental National Digital Forecast Database (NDFD) Effective May 6, 2014
TIN13-42 2013 Temporal Resolution of Forecasts for Hazards, Significant Wave Heights, Wind Direction, Speed and Gusts on the Oceanic Domain in the Experimental National Digital Forecast Database (NDFD) Will Increase Effective December 18, 2013
SCN13-64 2013 Experimental Ice Accumulation Grids Transition to Operational Status in the National Digital Forecast Database for CONUS Only Effective November 5, 2013
PNS13 2013 Amended: Soliciting Comments through December 31, 2013, on an Experimental National Digital Forecast Database Map Viewer
PNS13 2013 Experimental Gridded Marine Offshore and High Seas Forecasts in the National Digital Forecast Database (NDFD) Effective Wednesday March 20, 2013
PNS13 2013 Soliciting Comments through May 31, 2013, on an Experimental National Digital Forecast Database Map Viewer
TIN12-50 2012 Corrected: Two Operational Fire Weather Elements to be Added to the National Digital Forecast Database for the United States, including Hawaii, Guam and Puerto Rico, Effective November 27, 2012
PNS12 2012 Seeking Comments on Increasing the Resolution in the National Digital Forecast Database (NDFD) Effective August 28, 2012
TIN12-05 2012 Two Experimental Fire Weather Elements to be Added to the National Digital Forecast Database for the United States, including Alaska and Hawaii, Effective February 15, 2012
PNS11 2011 Experimental Ice Accumulation Grids to be Added to the National Digital Forecast Database (NDFD), for CONUS Only Effective October 12, 2011
TIN11-25 2011 Transition to Operational Status of Two Fire Weather Outlook Elements in NDFD for CONUS Only: Effective July 14, 2011
TIN11-12 2011 Experimental U.S. Arctic Offshore Marine Zones to be added to the National Digital Forecast Database(NDFD) and changes to existing NDFD parameters in other Alaska Offshore zones Effective May 18, 2011
TIN11-03 2011 Two Experimental Fire Weather Outlook Elements to be Added to the National Digital Forecast Database for CONUS Only Effective February 23, 2011
TIN10-59 2010 Discontinue the Experimental NDFD WFS:  Effective March 1, 2011
TIN10-58 2010 Extend Comment Period for Experimental Service Allowing NDFD Users to Identify Updated Grids:  Effective December 13, 2010
TIN10-28 2010 Amended: Domain Changes for Hawaii NDFD DNG NAM and RTMA Postponed Until September 28, 2010
TIN10-16 2010 Tropical Cyclone Surface Wind Speed Probability Elements for The North Pacific Ocean Become Operational in the NDFD: Effective May 13, 2010
TIN10-05 2010 Increase in Temporal Resolution to Significant Wave Height Grid in the National Digital Forecast Database (NDFD) Effective Wednesday February 17, 2010
TIN09-24 2009 Hazards Grid In NDFD Transitions To Operational Status Effective September 15, 2009
TIN09-20 2009 Nine Additional Alaska Gridded Forecast Elements to be Added to NDFD in Experimental Status Effective July 8, 2009
TIN09-14 2009 Nine Convective Outlook Hazard Probability Elements Transition to Operational in NDFD Effective April 30, 2009
TIN08-57 2008 Amended: Twelve Climate Outlook Probability Elements to Become Operational in the National Digital Forecast Database (NDFD) on August 21 2008 at 1200 UTC
TIN08-57 2008 Twelve Climate Outlook Probability Elements to Become Operational in the National Digital Forecast Database (NDFD) on August 21 2008 at 1200 UTC
TIN08-50 2008 Quantitative Precipitation, Sky Cover, and Snow Amount elements to become operational in the NDFD on July 8, 2008 at 1400 UTC (midnight local time on July 9, 2008 in Guam)
TIN08-49 2008 Hazards element to become experimental in the NDFD on July 8, 2008 at 1400 UTC (midnight local time on July 9, 2008 in Guam)
TIN08-34 2008 Probabilistic Tropical Cyclone Surface Wind Speed Elements for the North Pacific Ocean to Be Added to the National Digital Forecast Database /NDFD/ on May 15 2008 at 1200 UTC
TIN07-19 2007 Amended: Comment Period for Web Feature Service Access To the National Digital Forecast Database Extended Through April 30, 2008
TIN07-71 2007 Twelve Experimental Climate Outlook Hazard Probability Elements to Be Added To The National Digital Forecast Database (NDFD) On October 18, 2007 at 1400 UTC
TIN07-63 2007 Enhanced Options for Specifying Location Input to the National Digital Forecast Database /NDFD/ Simple Object Access Protocol (SOAP) Service Starts October 18, 2007
TIN07-58 2007 Gridded Binary Encoding and Decoding Changes for the Experimental Convective Outlook Hazard Probability Elements in the National Digital Forecast Database (NDFD):  Effective September 20, 2007
TIN07-56 2007 Wind Gust element to become Operational in the NDFD on September 20, 2007 at 1400 UTC (September 21, 2007 at midnight local time in Guam)
TIN07-32 2007 Significant Wave Height Element to become Operational in the NDFD on May 31 2007 at 1200 UTC
TIN07-31 2007 Probabilistic Tropical Cyclone Surface Wind Speed elements to become Operational in the NDFD on May 31 2007 with the 1200 UTC issuance
TIN07-19 2007 Experimental Web Feature Service Access to the NDFD Elements Begins May 1, 2007
TIN07-05 2007 Nine Experimental Convective Outlook Hazard Probability Elements to be added to the NDFD On February 27, 2007 at 1400 UTC
TIN06-73 2006 Upgrade NWS XML services to operational status effective December 4, 2006
TIN06-72 2006 Reminder: Change in time the NWS NDFD is extended by 24 hours: effective November 28, 2006
TIN06-66 2006 Experimental QPF element for HAWAII to be added to the NDFD on November 1 2006 at 1400 UTC
TIN06-60 2006 NWS NDFD element files to be split into smaller files on September 6, 2006 (September 7 local Guam time) reminder and specific information about what will happen between 1300 and 1400 UTC on implementation day
TIN06-55 2006 New experimental wind gust element to be added to NDFD on September 6, 2006 (September 7, 2006 in Guam)
TIN06-54 2006 Forecasts for Alaska added to the NDFD in experimental status on September 6, 2006 at 1400 UTC
TIN06-51 2006 Change in time the NWS NDFD is extended by 24 hours: effective November 28, 2006
TIN06-39 2006 NWS NDFD element files to be split into smaller files on September 6, 2006 (September 7 local Guam time)
TIN06-37 2006 New experimental NDFD tropical cyclone surface wind speed probability elements for the Contiguous US and adjacent coastal areas: effective July 5, 2006
TIN06-30 2006 NWS National Digital Forecast Database (NDFD) element files to be split into smaller files on September 6, 2006 (September 7, local Guam time)
TIN06-07  2006 Amended: NWS NDFD improvements: relative humidity and apparent temperature elements to become operational on March 15, 2006 (March 16, local Guam time)
TIN06-07 2006 NWS NDFD improvements: relative humidity and apparent temperature elements to become operational on March 15, 2006 (March 16 local Guam time)
TIN06-04 2006 NWS National Digital Forecast Database (NDFD) operational readiness status message: Two experimental elements to become operational on March 15 2006 (March 16 local Guam time)
TIN05-73
 
2005 Updated: National Digital Forecast Database implementation of wind direction and wind speed postponed until December 14, 2005 at 1400 UTC (December 15 at midnight local Guam time)
TIN05-73 2005 Two National Digital Forecast Database (NDFD) elements to become operational on December 8 2005 (December 9, 2005 in Guam)
TIN05-72 2005 NWS National Digital Forecast Database (NDFD) operational readiness status message: Next implementation scheduled December 8, 2005 (December 9, 2005 local Guam time)
TIN05-60
 
2005 Updated: NDFD improvements for Guam: Implementation postponed until September 20, 2005 at 1400 UTC (September 21 at midnight local Guam time)
TIN05-60 2005 National Digital Forecast Database improvements for Guam: Six elements become operational on September 14, 2005, at 1400 UTC (September 15 at midnight local Guam time)
TIN05-55 2005 NWS National Digital Forecast Database (NDFD) Operational readiness status message: Next implementation scheduled September 14 2005
TIN05-37
 
2005 Amended (#2): National Digital Forecast Database (NDFD) improvements for the contiguous United States, Puerto Rico and the Virgin Islands, and Hawaii effective June 15 2005 at 1400 UTC
TIN05-37
 
2005 Amended: National Digital Forecast Database improvements for the contiguous United States, Puerto Rico and the Virgin Islands, and Hawaii: Effective June 15 2005 at 1400 UTC
TIN05-37
 
2005 National Digital Forecast Database improvements for the contiguous United States, Puerto Rico, and Hawaii: Effective June 15 2005 at 1400 UTC
TIN05-24
 
2005 Corrected: National Weather Service National Digital Forecast Database (NDFD) operational readiness status message: Next implementation scheduled for June 15 2005
TIN05-12 2005 Three National Digital Forecast Database (NDFD) elements for the contiguous U.S. become operational on March 15 2005 at 1400 UTC
TIN04-65 2004 Update: National Weather Service National Digital Forecast Database (NDFD) status
TIN04-61 2004 Reminder: Three National Digital Forecast Database (NDFD) elements for the continguous U.S. become official on December 1 2004 at 1400 UTC
TIN04-49 2004 Update: National Weather Service National Digital Forecast Database (NDFD) Status
TIN04-46 2004 Experimental digital data from Hawaii and Guam now available in the National Weather Service National Digital Forecast Database (NDFD)
PNS04 2004 National Weather Service (NWS) National Digital Forecast Database (NDFD)
TIN04-34 2004 Update: National Weather Service National Digital Forecast Database (NDFD) Status
TIN04-30 2004 NWS Offers Experimental XML web services (including NDFD data)
TIN04-18 2004 Update: National Weather Service National Digital Forecast Database (NDFD) Status
TIN 03-42 2003 Corrected: National Weather Service Experimental National Digital Forecast Database (NDFD) comment period extended
TIN 03-27 2003 Update: National Weather Service Experimental National Digital Forecast Database (NDFD) element release
TIN 02-31 2002 National Weather Service Experimental National Digital Forecast Database...Effective December 2, 2002

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