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NEXRAD Level II Maintenance Notification - (Tuesday 5/5/2020)



NCEP Network Support Branch (NSB) will be performing Phase 1 routing changes which may affect the data flow of the Level II Network TDS (Public) path.  The activity is a series of routing changes within the Silver Spring and College Park offices which support the National Level II (NL2) servers.

From  NCO:
"During the maintenance window, AWIPS systems and other NOAAPORT customers will continue to receive most satellites, National Digital Forecast Database (NDFD), and Radar level 3 data via NOAAPORT/SBN.  AWIPS and other external NOAAPORT customers will not receive model data and most observational data sets, including surface observations, lightning data, MADIS/HADS data, and MRMS data, among others.  During the maintenance, AWIPS systems will be able to disseminate watches and warnings and any other products via NOAAPORT/SBN, IRIS, EMWIN, NLETS, iNWS and IPAWS; Other NWS dissemination pathways for watches and warnings including GTS, TGFTP, API, IDP GIS, nowCoast, and EDIS will be affected."

(Phase 1) The AWIPS services cut over

  •  Start Time: 6:45 AM (Central time) Tuesday May 5th, 2020
  •  Duration: 8 Hours
  •  Event: Silver Spring Networking Updates

Phase 1 will NOT change the National Level II (NL2) TDS IP address.  To ensure you do not lose connectivity to the TDS server, we would like to remind you to add the following IP address to your ldmd.conf file on the server ingesting from the TDS to support the changes in Phase 2.   Phase 2 date will follow a week (or two) after phase one is completed.

  • OLD TDS address - 140.90.73.177
  • NEW TDS address -140.90.61.126

To ensure no loss of data flow, please ADD the new IP address (REQUEST & ALLOW).  Adding vs changing will mitigate the risk of data loss during the cut over to the new IP and minimize path down time from your perspective.  We will send out additional maintenance notices associated with this migration.

The activity will take about 8 hours to complete and will effect Data flow of the "Silver Spring/TDS Level II Path" for up to 2.5 hours somewhere during that window. 

 The Data Path via the ROC (Norman, OK) NL2 servers is not part of this activity. (No service interruption via RDS path is anticipated.)

Please keep BOTH NL2 connections (Silver Spring & Norman) up to avoid data flow interruption.

National Level II (NL2) system monitoring is available on:

https://www.weather.gov/nl2/

  • NEXRAD View - WSR-88D monitoring by site location  
  • SERVER View - NL2 server & Network status (Shows site connectivity AND Silver Spring vs Norman Data flow)
  • CONTROL View - Shows data latency for each NL2 server
  • LDM View - Level II Data flow from site
  • NPN View - Shows FSL2 data from the NOAA Profilers

  
 If there is any emergency associated with Level II data flow noted during this event, I can be reached at (405) 820-3646
 
 Thanks...
 
    ...Don



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*Donald J. Horvat               *  ____                              *
*                               * /    \     _____     _______  _____*
*Sr. Systems Engineer           *(      )   / ___  )  / ___  / / ___/*
Support Contractor            * \____/   / /__/ /  / /  / / / /    *
*WSR-88D Radar Operations Center*  |\/|   / ___  <  / /  / / / /     *
*                               *  |/\|  / /   / / / /__/ / / /___   *
*1313 Halley Circle             *  |\/| /_/   /_/ /______/ /_____/   *
*Norman, OK 73069               *  |/\|                              *
*                               *   WSR-88D RADAR OPERATIONS CENTER  *
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*Phone: (405) 573-3418          * e-mail: address@hidden   *
*FAX:   (405) 573-3340          *                                    *
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