463
NOUS41 KWBC 042030 AAA
PNSWSH

Service Change Notice 24-54 Updated
National Weather Service Headquarters Silver Spring MD
430 PM EDT Tue Jun 4 2024

To: Subscribers:
 -NOAA Weather Wire Service (NWWS)
 -Emergency Managers Weather Information Network (EMWIN)
 -NOAAPort
 Other NWS Partners, Users and Employees

From: David Michaud
 Director, NWS Office of Central Processing

Subject: Updated: Change to NOAAPort / Satellite Broadcast Network
(SBN)
 Channel Alignment, Effective June 10, 2024

Updated to change the implementation date from on or about 1200
Coordinated Universal Time (UTC) June 10, 2024, to on or about 1200
Coordinated Universal Time (UTC) July 15, 2024, and to add
information on
a recommended configuration setting.

Effective June 10, 2024, the NWS recommends that all users ensure
their
requests from NOAAPort / SBN utilize the feed type of ANY rather than
specific feed types such as HDS and NGRID. The implementation date
has
been delayed to allow users time to make these changes. After this
change
patterns could be duplicated so users should cross-check and make
sure
there are no duplicates.

An example of a request to change is for CONUS MOS products.

Before:

NGRID|IDS|DDPLUS ^(FOUS[1-589].) (....) (..)(..)(..)

After:

ANY   ^(FOUS[1-589].) (....) (..)(..)(..)

From the original SCN 24-54:
The NWS has studied the existing NOAAPort/SBN/NWWS channel alignment,
bandwidth usage, prioritization, and delay times. This study
identified
that reorganizing the data on the various channels will improve the
timeliness of distributed products.

The first of three changes to the existing NOAAPort/SBN/NWWS channels
is
to migrate all grib, grib2, and bufr formatted data from the NMC
channel
to the NMC2 channel.

The following is a list of World Meteorological Organization (WMO)
Headers
that will move: (Channel: NMC | Priority: 0 | Bandwidth: 20 | Port:
1201 |
PID: 101) to (Channel: NMC2 | Priority: 5 | Bandwidth: 30 | Port:
1203 |
PID: 103):

^(AT....) ^(DT....) ^(ES....) ^(FT....) ^(GT....) ^(HH....)
^(HR....) ^(HT....) ^(HU....) ^(HV....) ^(IU....) ^(JS....)
^(JU....) ^(LA....) ^(LE....) ^(LH....) ^(LP....) ^(LR....)
^(LT....) ^(LU....) ^(LV....) ^(MA....) ^(ME....) ^(ME....)
^(MH....) ^(MP....) ^(MP....) ^(MR....) ^(OE....) ^(PE....)
^(RD....) ^(RE....) ^(RH....) ^(SL....) ^(SV....) ^(YA....)
^(YB....) ^(YC....) ^(YD....) ^(YE....) ^(YF....) ^(YG....)
^(YH....) ^(YI....) ^(YJ....) ^(YK....) ^(YL....) ^(YM....)
^(YN....) ^(YO....) ^(YP....) ^(YQ....) ^(YR....) ^(YS....)
^(YT....) ^(YU....) ^(YV....) ^(YW....) ^(YX....) ^(YY....)
^(YZ....) ^(ZA....) ^(ZB....) ^(ZC....) ^(ZD....) ^(ZE....)
^(ZF....) ^(ZG....) ^(ZH....) ^(ZO....) ^(ZP....) ^(ZQ....)
^(ZR....) ^(ZS....) ^(ZT....) ^(ZU....) ^(ZV....) ^(ZW....)
^(ZX....) ^(ZY....) ^(ZZ....)

This data is expected to move on or about 1200 Coordinated Universal
Time
(UTC) July 15, 2024. If a Critical Weather Day has been issued, this
change will be postponed until 1200 UTC on the next non-Critical
Weather
Day.

No change is expected to the data feed at the receiver. If no issues
are
experienced, the configuration will remain in place. If any issues
are
identified, the changes will be evaluated, and a new implementation
date
will be determined.

We encourage all NOAAPort/SBN/NWWS users to closely monitor this
Service
Change Notice (SCN) during the transition period for updated
information.
If you have any questions or concerns, please contact the focal
points
below:

Paul Kirkwood
NOAA/NWS Southern Region Headquarters
Email: paul.kirkwood@noaa.gov

Andy Just
NOAA/NWS Office of Central Processing
Email: andy.just@noaa.gov

James Glenn
NOAA/NWS Office of Central Processing
Email: james.glenn@noaa.gov

National Service Change Notices are online at:

https://www.weather.gov/notification