[nws-changes] 20110805: RUC Fwd: ADMIN NOTICE NOUS41 KWBC

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: [nws-changes] 20110805: RUC Fwd: ADMIN NOTICE NOUS41 KWBC
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Fri, 05 Aug 2011 09:30:32 -0600

-------- Original Message --------

146
NOUS41 KWBC 051529
PNSWSH

Technical Implementation Notice 11-19, Amended
National Weather Service Headquarters Washington DC
1130 AM EDT Fri Aug 5 2011

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

From:      Tim McClung
           Chief, Science Plans Branch
           Office of Science and Technology

Subject:   Amended: Addition of RUC products to NOAAPORT:
           Delayed until further notice.

Amended to delay the implementation date until further notice
due to the need to troubleshoot network issues detected
following the NOAAPORT/SBN expansion.

Effective sometime after August 9, 2011, the National Centers
for Environmental Prediction (NCEP) will begin disseminating
additional products from the Rapid Update Cycle (RUC) model on
NOAAPORT and the Satellite Broadcast Network (SBN).

Currently, RUC products on pressure levels on a 13km grid are
available out to forecast hour 12 for the 0, 3, 6 ... 21 UTC
cycles, and out to 9 hours for the 1, 2, 4, 5... 22, 23 UTC
cycles.  Starting with this implementation, RUC 13km output out
to forecast hour 18 will be available for all 24 cycles of the
RUC. In addition, three new parameters will be added for all
forecast hours for all 24 hour cycles. These parameters are
Planetary Boundary Layer (PBL) height, simulated composite radar
reflectivity, and 0-1 km helicity.

The products will be available with WMO headers L*D***
KWBG.  More details of the WMO headers can be found at:

http://www.nco.ncep.noaa.gov/pmb/changes/ruc13wmo_headers.shtml

These RUC products are currently made available on the NCEP
server and can be retrieved at:

http://www.ftp.ncep.noaa.gov/data/nccf/com/ruc/prod/
or
ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/ruc/prod

in files with names ruc2.tXXz.pgrb13fYY.grib2, where XX is the
model cycle and YY is the forecast hour.

NCEP urges all users to ensure their decoders can handle changes
in content order, changes in the scaling factor component within
the product definition section (PDS) of the GRIB files, and
volume changes. These elements may change with future NCEP model
implementations. NCEP will make every attempt to alert users to
these changes before implementation.

For questions regarding these changes, please contact:

    Geoff Manikin
    NCEP/EMC Mesoscale Modeling Branch
    Camp Springs, Maryland
    301-763-8000 x 7263
    geoffrey.manikin@xxxxxxxx
or
    Rebecca Cosgrove
    NCEP Central Operations
    Camp Springs, Maryland
    ncep.pmb.dataflow@xxxxxxxx

NWS National Technical Implementation Notices are online at:

    http://www.nws.noaa.gov/os/notif.htm

$$