NOUS41 KWBC 151807 PNSWSH TECHNICAL IMPLEMENTATION NOTICE 08-56 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 205 PM EDT TUE JUL 15 2008 TO: SUBSCRIBERS: -FAMILY OF SERVICES -NOAAPORT -EMERGENCY MANAGERS WEATHER INFORMATION NETWORK OTHER NWS PARTNERS...USERS AND EMPLOYEES FROM: JASON TUELL CHIEF...SCIENCE PLANS BRANCH OFFICE OF SCIENCE AND TECHNOLOGY SUBJECT: ADDITION OF EXPERIMENTAL NCEP RTMA GRIDS FOR HAWAII AND PUERTO RICO AREAS: EFFECTIVE SEPTEMBER 23 2008 EFFECTIVE TUESDAY SEPTEMBER 23 2008...AT APPROXIMATELY 1500 COORDINATED UNIVERSAL TIME /UTC/...THE NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION /NCEP/ WILL BEGIN DISSEMINATING REAL TIME MESOSCALE ANALYSIS /RTMA/ PRODUCTS FOR THE HAWAII AND PUERTO RICO AREAS. THESE EXPERIMENTAL PRODUCTS WILL BE PROVIDED VIA NOAAPORT AND THE NATIONAL DIGITAL GUIDANCE DATABASE /NDGD/. RTMA CONSISTS OF A SET OF GRIDDED SURFACE ANALYSES CORRESPONDING TO THE PARAMETERS LISTED BELOW IN TABLES 1 AND 2. SIMILAR TO THE CONUS AND ALASKA RTMA PRODUCTS ALREADY PROVIDED VIA NOAAPORT AND NDGD...THESE NEW HAWAII AND PUERTO RICO AREA GRIDS ARE ALSO INTENDED FOR DISTRIBUTION IN NEAR REAL TIME. THUS...IN THE GENERATION OF THESE GRIDS...NCEP EXPLOITS AS MUCH SATELLITE... ASOS...MESONET...AND OTHER SENSOR DATA AS CAN BE ACQUIRED IN NEAR REAL TIME. THE SENSOR DATA ARE ANALYZED AND INTERPOLATED TO REGIONAL GRIDS AND FORMATTED IN GRIB2. BOTH THE HAWAII AND PUERTO RICO RTMA PRODUCTS WILL BE PROVIDED ON 2.5 KM HORIZONTAL RESOLUTION GRIDS. NCEP WILL GENERATE THE HAWAII AND PUERTO RICO RTMA GRIDS EACH HOUR. EACH HOURLY GRID SET WILL HAVE A VALID TIME CORRESPONDING TO AN EVEN HOUR /I.E. 0000...0100...0200...THRU 2300/. THE RTMA GRIDS WILL BE DISSEMINATED VIA NOAAPORT AND AVAILABLE ON NDGD AT APPROXIMATELY 45 MINUTES AFTER THE VALID HOUR. THE HOURLY DATA VOLUME WILL BE APPROXIMATELY 1.3 MEGABYTES /MB/ AND THE DAILY VOLUME WILL BE APPROXIMATELY 31.2 MB. ALL OF THE GRIDS LISTED IN TABLES 1 AND 2 WILL BE CARRIED ON NOAAPORT. ALL OF THE SAME GRIDS...EXCEPT FOR U AND V WINDS...WILL BE AVAILABLE IN NDGD. TABLE 1: WMO HEADINGS ASSIGNED TO THE HAWAII AREA RTMA GRIDS WMO HEADING RTMA PARAMETERS LTHA98 KWBR: TEMPERATURE ANALYSIS LTHA98 KWBR: TEMPERATURE ANALYSIS UNCERTAINTY LRHA98 KWBR: DEWPOINT TEMPERATURE ANALYSIS LRHA98 KWBR: DEWPOINT TEMPERATURE ANALYSIS UNCERTAINTY LNHA98 KWBR: WIND SPEED ANALYSIS LNHA98 KWBR: WIND SPEED ANALYSIS UNCERTAINTY LNHA98 KWBR: WIND DIRECTION ANALYSIS LNHA98 KWBR: WIND DIRECTION ANALYSIS UNCERTAINTY LUHA98 KWBR: U WIND COMPONENT ANALYSIS /NOAAPORT ONLY/ LVHA98 KWBR: V WIND COMPONENT ANALYSIS /NOAAPORT ONLY/ TABLE 2: WMO HEADINGS ASSIGNED TO THE PUERTO RICO AREA RTMA GRIDS WMO HEADING RTMA PARAMETERS LTCA98 KWBR: TEMPERATURE ANALYSIS LTCA98 KWBR: TEMPERATURE ANALYSIS UNCERTAINTY LRCA98 KWBR: DEWPOINT TEMPERATURE ANALYSIS LRCA98 KWBR: DEWPOINT TEMPERATURE ANALYSIS UNCERTAINTY LNCA98 KWBR: WIND SPEED ANALYSIS LNCA98 KWBR: WIND SPEED ANALYSIS UNCERTAINTY LNCA98 KWBR: WIND DIRECTION ANALYSIS LNCA98 KWBR: WIND DIRECTION ANALYSIS UNCERTAINTY LUCA98 KWBR: U WIND COMPONENT ANALYSIS /NOAAPORT ONLY/ LVCA98 KWBR: V WIND COMPONENT ANALYSIS /NOAAPORT ONLY/ WITHIN NDGD...THE HAWAII GRIDS WILL BE PLACED IN SUBDIRECTORIES OF /USE LOWER CASE LETTERS EXCEPT FOR SL...ST...DF...DC...GT...AND AR/: FTP://TGFTP.NWS.NOAA.GOV/SL.US008001/ST.EXPR/DF.GR2/DC.NDGD/GT.RT MA/AR.HAWAII THE PUERTO RICO GRIDS WILL BE PLACED IN SUBDIRECTORIES OF /USE LOWER CASE LETTERS EXCEPT FOR SL...ST...DF...DC...GT...AND AR/: FTP://TGFTP.NWS.NOAA.GOV/SL.US008001/ST.EXPR/DF.GR2/DC.NDGD/GT.RT MA/AR.PUERTORI BENEATH THE AR.HAWAII AND AR.PUERTORI DIRECTORIES ARE 24 SUBDIRECTORIES...ONE FOR EACH HOUR OF THE DAY: RT.00...RT.01...RT.02...THROUGH RT.23. EACH HOURLY SUBDIRECTORY WILL STORE THE RTMA FILES FOR THAT NOMINAL HOUR. THE RTMA FILES IN EACH HOURLY SUBDIRECTORY WILL BE NAMED AS SHOWN IN TABLE 3 /USE LOWER CASE/: TABLE 3: NDGD FILE NAMES FOR HAWAII AND PUERTO RICO AREA RTMA GRIDS FILE NAME RTMA PARAMETER DS.TEMP.BIN TEMPERATURE ANALYSIS DS.UTEMP.BIN TEMPERATURE ANALYSIS UNCERTAINTY DS.TD.BIN DEWPOINT TEMPERATURE ANALYSIS DS.UTD.BIN DEWPOINT TEMPERATURE ANALYSIS UNCERTAINTY DS.WSPD.BIN WIND SPEED ANALYSIS DS.UWSPD.BIN WIND SPEED ANALYSIS UNCERTAINTY DS.WDIR.BIN WIND DIRECTION ANALYSIS DS.UWDIR.BIN WIND DIRECTION ANALYSIS UNCERTAINTY THE RESIDENCE TIME OF NDGD RTMA FILES WILL BE APPROXIMATELY ONE DAY. EACH HOUR NEW FILES WILL BE WRITTEN TO THE MOST RECENT HOURLY DIRECTORY...OVERWRITING THE FILES CORRESPONDING TO THE SAME HOUR ON THE PREVIOUS DAY. NCEP HAS ESTABLISHED THE FOLLOWING WEB SITES FOR PREVIEWING UP-TO-DATE HAWAII AND PUERTO RICO RTMA /USE LOWER CASE/: HTTP://WWW.EMC.NCEP.NOAA.GOV/MMB/RTMA/HAWAII/ HTTP://WWW.EMC.NCEP.NOAA.GOV/MMB/RTMA/PR/ IF YOU HAVE QUESTIONS ABOUT THE TECHNICAL CONTENT OR GENERATION OF THESE PRODUCTS...PLEASE CONTACT: GEOFF DIMEGO NWS...NCEP ENVIRONMENTAL MODELING CENTER CAMP SPRINGS MARYLAND PHONE: 301 763 8000 EXT 7221 EMAIL: GEOFF.DIMEGO@NOAA.GOV IF YOU HAVE QUESTIONS ABOUT THE NCEP DATA FLOW ASPECTS OF THESE DATA SETS...PLEASE CONTACT THE NCEP/NCO/PMB DATAFLOW HELP DESK EMAIL ADDRESS BELOW. EMAIL: NCEP.PMB.DATAFLOW@NOAA.GOV IF YOU HAVE QUESTIONS ABOUT THE NOAAPORT ACTIVATION OR DATA FLOW OF THESE PRODUCTS...PLEASE CONTACT: BRIAN GOCKEL NWS...OFFICE OF SCIENCE AND TECHNOLOGY SILVER SPRING MARYLAND PHONE: 301 713 0304 EXT 158 EMAIL: BRIAN.GOCKEL@NOAA.GOV NCEP WILL CONTINUE TO REFINE THE RTMA PRODUCTS. USERS CAN PROVIDE FEEDBACK ABOUT THE EXPERIMENTAL HAWAII RTMA AT THE FOLLOWING WEB SITE /USE LOWER CASE EXCEPT FOR RTMA AND HI/: HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=RTMA-HI A 60-DAY PUBLIC COMMENT PERIOD WILL BEGIN ON THE DATE OF ACTIVATION AND END ON NOVEMBER 24 2008. USERS CAN PROVIDE FEEDBACK ABOUT THE EXPERIMENTAL PUERTO RICO RTMA AT THE FOLLOWING WEB SITE /USE LOWER CASE EXCEPT FOR RTMA AND PR/: HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=RTMA-PR THIS NOTICE AND OTHER TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/: HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM $$ NNNN