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NOUS41 KWBC 211545 AAE
PNSWSH

Service Change Notice 24-54 Updated
National Weather Service Headquarters Silver Spring MD
1145 AM EDT Wed Aug 21 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 on or about September 9, 2024

Updated to establish a new implementation date to on or about 1200
Coordinated Universal Time (UTC) September 9, 2024.  This new date
has been
established after several previous postponements due to extended
severe
weather,

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.  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 the contiguous U.S. (CONUS)
Model
Output Statistics (MOS) products.

Before:

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

After:

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

From the original Service Change Notice (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 gridded binary (grib), grib2, and Binary Universal Form
for the
Representation of meteorological data (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....)

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 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