NOUS41 KWBC 201737
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 05-81
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
140 PM EST TUE DEC 20 2005
TO: FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER
WIRE SERVICE /NWWS/ SUBSCRIBERS...EMERGENCY MANAGERS
WEATHER INFORMATION NETWORK /EMWIN/ SUBSCRIBERS...OTHER
NATIONAL WEATHER SERVICE /NWS/ CUSTOMERS AND
PARTNERS...NWS EMPLOYEES
FROM: PAUL HIRSCHBERG
CHIEF...SCIENCE PLANS BRANCH
OFFICE OF SCIENCE AND TECHNOLOGY /OST/
SUBJECT: CHANGE IN PRODUCT ISSUANCE TIME FOR 06 AND 18 UTC NORTH
AMERICAN MESOSCALE /NAM/ MODEL: EFFECTIVE MARCH 7 2006
EFFECTIVE MARCH 7 2006 ...BEGINNING WITH THE 1800 COORDINATED
UNIVERSAL TIME /UTC/ RUN...THE NATIONAL CENTERS FOR ENVIRONMENTAL
PREDICTION /NCEP/ WILL PERMANENTLY DELAY THE START OF THE 06 AND
18 UTC NORTH AMERICAN MESOSCALE /NAM/ MODEL BY 25 MINUTES. THIS
DELAY WILL ALLOW THESE TWO RUNS TO HAVE THE SAME DATA CUTOFF TIME
AS THE 00 AND 12 UTC RUNS /WHICH ARE CURRENTLY SYNOPTIC TIME PLUS
1 HOUR AND 15 MINUTES/. IT WILL ALSO ALLOW NCEP TO DEVELOP A
BALANCED 6 HOUR MODEL CYCLE FOR ALL OF ITS MODEL RUNS.
USERS OF THE 06 AND 18 UTC NAM MODEL GUIDANCE SHOULD ANTICIPATE
THAT ALL PRODUCTS FROM THESE RUNS WILL BE DISSEMINATED 25 MINUTES
LATER AFTER THIS CHANGE IS IMPLEMENTED.
IF YOU HAVE ANY QUESTIONS CONCERNING THIS CHANGE...PLEASE
CONTACT:
DR. GEOFF DIMEGO
CHIEF NCEP...MESOSCALE MODELING BRANCH
CAMP SPRINGS MARYLAND
PHONE: 301 763 8000 X7221
EMAIL: GEOFF.DIMEGO@xxxxxxxx
OR
BRENT GORDON
NCEP...PRODUCTION MANAGEMENT BRANCH
CAMP SPRINGS MARYLAND
PHONE: 301 763 8000 X7193
EMAIL: BRENT.GORDON@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE
AT /USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
NNNN