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-------- Original Message --------948 NOUS41 KWBC 031955
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 08-89
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
255 PM EDT MON NOV 3 2008
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...USERS AND EMPLOYEES
FROM: JASON TUELL
CHIEF...SCIENCE PLANS BRANCH
OFFICE OF SCIENCE AND TECHNOLOGY
SUBJECT: REPLACEMENT OF ETA-BASED MOS GUIDANCE WITH NAM-BASED
MOS GUIDANCE: EFFECTIVE DECEMBER 9 2008
REFER TO: PUBLIC INFORMATION STATEMENT...COMMENT PERIOD RELEASED
JULY 21 2008.
EFFECTIVE TUESDAY DECEMBER 9 2008 WITH THE 1200 UNIVERSAL
COORDINATED TIME /UTC/ CYCLE RUN...THE NWS WILL REPLACE THE
MODEL OUTPUT STATISTICS /MOS/ GUIDANCE BASED ON THE ETA MODEL
WITH MOS GUIDANCE BASED ON THE NORTH AMERICAN MESOSCALE /NAM/
MODEL.
A PUBLIC INFORMATION STATEMENT WAS ISSUED ON JULY 21 2008 REQUESTING COMMENTS ON THE PROPOSED REPLACEMENT OF THE ETA-BASED MOS GUIDANCE WITH NAM-BASED MOS GUIDANCE. BASED ON THE RESPONSES RECEIVED...THE DECISION WAS MADE TO REPLACE THE ETA MOS WITH NEW NAM MOS GUIDANCE. FOR DETAILS ABOUT THIS DECISION PLEASE SEE THE MEMORANDUM FOR THE RECORD AT /USE LOWER CASE LETTERS/:
HTTP://WWW.WEATHER.GOV/INFOSERVICECHANGES/ETAMOSDECISION.PDFTHE NAM MOS GUIDANCE WILL BE ISSUED FOR THE SAME ELEMENTS AS THE ETA MOS GUIDANCE AND WILL BE AVAILABLE FOR ONE TO THREE DAYS IN ADVANCE OF THE 0000 AND 1200 UTC MODEL RUN TIMES. GUIDANCE WILL BE AVAILABLE IN ALPHANUMERIC TEXT MESSAGES AND BUFR PRODUCTS WHICH WILL USE THE SAME WMO HEADINGS AND AWIPS IDS AS THE CURRENT ETA MOS PRODUCTS. THE WMO HEADINGS FOR THE PRODUCTS ARE OUTLINED IN TABLE 1 BELOW. THE PRODUCTS WILL BE DISSEMINATED ON THE SATELLITE BROADCAST NETWORK /SBN/...NOAAPORT...AND THE NWS FTP SERVER. USERS WILL SEE THE FOLLOWING CHANGES DUE TO THE REPLACEMENT OF THE ETA MOS WITH NAM MOS:
1. STATISTICAL EQUATIONS FOR SOME ELEMENTS REDEVELOPED USING NAM MODEL DATA AS INPUT
2. CHANGES TO THE STATIONS FOR WHICH GUIDANCE IS AVAILABLE3. THUNDERSTORM GUIDANCE NOW AVAILABLE TO 72 HOURS IN TEXT PRODUCT
4. PRODUCT DELIVERY APPROXIMATELY 10 MINUTES LATER DUE TO LONGER MODEL RUN TIME 5. ETA MOS LABEL IN TEXT AND BUFR PRODUCTS CHANGED TO NAM MOSPLEASE REFER TO THE WEBSITE LISTED BELOW FOR MORE SPECIFIC DETAILS ABOUT THE CHANGES OUTLINED ABOVE: /USE LOWER CASE LETTERS/
HTTP://NWS.NOAA.GOV/MDL/SYNOP/NAM.PHPA TECHNICAL PROCEDURES BULLETIN DESCRIBING THE FORMAT OF THE NAM MOS TEXT PRODUCTS IS AVAILABLE AT THE FOLLOWING WEB SITE /USE LOWER CASE LETTERS/:
HTTP://NWS.NOAA.GOV/MDL/SYNOP/TPB/MDLTPB08-01.PDFTABLE 1. COMMUNICATION IDENTIFIERS FOR THE NAM-BASED MOS GUIDANCE. NOTE THAT THESE IDENTIFIERS ARE CURRENTLY USED TO DISSEMINATE THE ETA MOS GUIDANCE. ON DECEMBER 8 2008 THE NAM GUIDANCE WILL BE SENT UNDER THESE HEADINGS.
WMO HEADING AWIPS ID PRODUCT TYPE
FOPA40 KWNO METPA0 TEXT FOUS44 KWNO METNE1 TEXT FOUS45 KWNO METSE1 TEXT FOUS46 KWNO METNC1 TEXT FOUS47 KWNO METSC1 TEXT FOUS48 KWNO METRM1 TEXT FOUS49 KWNO METWC1 TEXT FOAK47 KWNO METAJK TEXT FOAK48 KWNO METAFC TEXT FOAK49 KWNO METAFG TEXTJSML10 KWNO N/A BUFR JSML11 KWNO N/A BUFR
JSML12 KWNO N/A BUFR JSML13 KWNO N/A BUFR JSML14 KWNO N/A BUFR JSML15 KWNO N/A BUFR JSML16 KWNO N/A BUFR JSML17 KWNO N/A BUFRIF YOU HAVE QUESTIONS ABOUT THESE PRODUCTS OR THE MOS GUIDANCE...PLEASE CONTACT:
KATHRYN GILBERT MDL/SILVER SPRING MARYLAND PHONE: 301-713-0023 EXT. 130 E-MAIL: KATHRYN.GILBERT@xxxxxxxxLINKS TO THE MOS PRODUCTS...ALONG WITH DESCRIPTIONS...CAN BE FOUND ONLINE AT /USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOPNWS TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT /USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM $$ NNNN
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