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-------- Original Message --------869 NOUS41 KWBC 061911
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 07-53
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
3:10 PM EDT MON AUG 06 2007
TO: NATIONAL WEATHER SERVICE /NWS/ OFFICES
FEDERAL AVIATION ADMINISTRATION /FAA/ CUSTOMERS
FAMILY OF SERVICES /FOS/ SUBSCRIBERS
WORLD AREA FORECAST SYSTEM /WAFS/ USERS
OTHER CUSTOMERS OF NWS AVIATION FORECASTS
FROM: KEVIN L. JOHNSTON
CHIEF...AVIATION SERVICES BRANCH
SUBJECT: CHANGE IN TRANSMISSION TIMES OF HIGH LEVEL AND MEDIUM
LEVEL SIGNIFICANT WEATHER PRODUCTS BY WASHINGTON AND
LONDON WORLD AREA FORECAST CENTERS /WAFC/ EFFECTIVE
FEBRUARY 6 2008.
IN ACCORDANCE WITH WAFS OPERATIONS GROUP CONCLUSION 3/14... THE
WAFS PROVIDER STATES WILL ADVANCE THE LEAD TIME OF ISSUANCE OF
SIGWX FORECASTS IN THE BUFR CODE FORM TO 17 HOURS FOR HIGH
LEVELS /SWH/ AND 16 HOURS FOR MEDIUM LEVELS /SWM/.
FOR WAFS HIGH AND MEDIUM LEVEL SIGWX PRODUCTS IN PORTABLE
NETWORK GRAPHICS /PNG/ CHART FORMAT... A LEAD TIME OF 16 HOURS
WILL APPLY. WHEN OPERATING IN BACKUP MODE...SWM BUFR...SWH PNG
AND SWM PNG WILL BE ISSUED WITH A LEAD TIME OF 15 HOURS.
THE NEW ISSUANCE TIMES TO 24 HOUR SIGWX FORECASTS WILL BE:0100 UTC...0700 UTC...1300 UTC...1900 UTC FOR ROUTINE AND BACKUP MODE SWH BUFR. 0200 UTC...0800 UTC...1400 UTC...2000 UTC FOR ROUTINE SWM BUFR...SWH PNG AND SWM PNG.
0300 UTC...0900 UTC...1500 UTC...2100 UTC FOR BACKUP MODE SWM BUFR...SWH PNG AND SWM PNG. WAFC LONDON AND WAFC WASHINGTON WILL IMPLEMENT THIS CHANGE ON WEDNESDAY FEBRUARY 6 2008 FOR PRODUCTS ISSUED AT 1900 UTC WITH VALIDITY 1200 UTC ON THURSDAY FEBRUARY 7 2008.
ROUTINE WAFC WASHINGTON WMO ABBREVIATED HEADINGS AFFECTED BY THIS CHANGE ARE AS FOLLOWS:
JUWE96 KKCI JUCE00 KKCI JUBE99 KKCI JUTE97 KKCI JUFE00 KKCIJUOE00 KKCI JUTE00 KKCI JUJE00 KKCI JUNE00 KKCI JUME00 KKCI JUVE00 KKCI
PGEE05 KKCI PGIE05 KKCI PGGE05 KKCI PGAE05 KKCI PGBE05 KKCI PGJE05 KKCI PGDE29 KKCI PGNE14 KKCIIF YOU HAVE ANY QUESTIONS CONCERNING THESE CHANGES TO WAFC WASHINGTON PRODUCTS...PLEASE CONTACT:
LARRY BURCH
DEPUTY DIRECTOR
AVIATION WEATHER CENTER
KANSAS CITY MISSOURI
PHONE: 816-584-7203
E-MAIL: LARRY.BURCH@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE
AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/:
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM $$ NNNN ============================================================================== To unsubscribe nws-changes, visit: http://www.unidata.ucar.edu/mailing-list-delete-form.html ==============================================================================
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