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-------- Original Message --------142 NOUS41 KWBC 111955
PNSWSH TECHNICAL IMPLEMENTATION NOTICE 10-04 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 118 PM EST MON JAN 11 2010TO: 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 UTCMODEL 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 ELEMENTLIRXXX 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 130KATHRYN.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.PHPNWS NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT /USE LOWERCASE/: HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM $$
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