-------- Original Message --------
142
NOUS41 KWBC 111955
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 10-04
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
118 PM EST MON JAN 11 2010
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...USERS AND EMPLOYEES
FROM: TIM MCCLUNG
SCIENCE PLANS BRANCH CHIEF
OFFICE OF SCIENCE AND TECHNOLOGY
SUBJECT: ADDITION OF NEW QPF AND SNOW ELEMENTS TO THE GFS-
BASED GRIDDED MOS GUIDANCE IN ALASKA AND ADDITION
OF EXTENDED-RANGE SNOWFALL IN THE CONUS:
EFFECTIVE MARCH 30 2010
EFFECTIVE MARCH 30 2010...BEGINNING WITH THE 1200 COORDINATED
UNIVERSAL TIME /UTC/ RUN...NWS WILL PRODUCE ADDITIONAL GLOBAL
FORECAST SYSTEM /GFS/ -BASED GRIDDED MOS GUIDANCE FOR THE
CONUS AND ALASKA AND DISSEMINATE IT ON THE SATELLITE BROADCAST
NETWORK /SBN/...NOAAPORT. THESE GUIDANCE PRODUCTS WILL BE IN
GRIB2 FORMAT. THE NEW COMMUNICATION IDENTIFIERS FOR THESE
PRODUCTS ARE SHOWN IN TABLE 1 BELOW.
THE GRIDDED MOS PRODUCTS OVER ALASKA WILL CONTAIN GUIDANCE ON
A ROUGHLY 3 KM POLAR STEREOGRAPHIC GRID COVERING THE SAME
EXPANSE AS THE NATIONAL DIGITAL FORECAST DATABASE /NDFD/
ALASKA GRID. THE GRIDDED MOS PRODUCTS OVER THE CONUS WILL
CONTAIN GUIDANCE ON A ROUGHLY 5 KM LAMBERT CONFORMAL GRID.
THESE ADDITIONAL GRIDS WILL BE GENERATED FROM THE 0000 AND
1200 UNIVERSAL COORDINATED TIME /UTC/ MODEL RUNS OUT TO
PROJECTIONS OF 156 HOURS IN ADVANCE.
GUIDANCE WILL BE MADE AVAILABLE FOR THE FOLLOWING ADDITIONAL
ELEMENTS OVER ALASKA:
24-HR SNOWFALL
QUANTITATIVE PRECIPITATION /6- AND 12-HR/
GUIDANCE WILL BE MADE AVAILABLE FOR THE FOLLOWING ADDITIONAL
ELEMENT OVER THE CONUS:
24-HR SNOWFALL FOR EXTENDED-RANGE PROJECTIONS FROM 1200 UTC
MODEL RUNS AND ONE ADDITIONAL EXTENDED-RANGE PROJECTION FROM
THE 0000 UTC MODEL RUN
TABLE 1: COMMUNICATION IDENTIFIERS FOR THE GFS-BASED GRIDDED
MOS GRIB2 PRODUCTS SCHEDULED TO BE ADDED TO THE SBN. EACH
GRIB2 PRODUCT HAS A UNIQUE WMO HEADING. LISTED BELOW ARE
REPRESENTATIONS OF THE WMO HEADINGS. A COMPLETE LIST
OF GRIDDED MOS WMO HEADINGS IS AVAILABLE AT /USE LOWERCASE/:
HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/GMOS/GMOSHEADERS.PDF
WMO HEADING ELEMENT
LIRXXX KWBQ 6-HR QPF (ALASKA)
LVRXXX KWBQ 12-HR QPF (ALASKA)
LSRXXX KWBQ 24-HR SNOWFALL (ALASKA)
LSUXXX KWBQ 24-HR SNOWFALL AMOUNT (CONUS)
FOR QUESTIONS REGARDING THESE GFS MOS GUIDANCE PRODUCTS...
PLEASE CONTACT:
KATHRYN GILBERT
MDL/SILVER SPRING MARYLAND
301-713-0023 EXT 130
KATHRYN.GILBERT@xxxxxxxx
LINKS TO THE GRIDDED MOS PRODUCTS...ALONG WITH DESCRIPTIONS...
CAN BE FOUND AT /USE LOWERCASE/:
HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/GMOS.PHP
NWS NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT
/USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
$$