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-------- Original Message --------052 NOUS41 KWBC 291258
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 06-59
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
900 AM EDT TUE AUG 29 2006
TO: NATIONAL WEATHER SERVICE /NWS/ OFFICES
FAMILY OF SERVICES /FOS/ SUBSCRIBERS
FEDERAL AVIATION ADMINISTRATION /FAA/ OFFICES
OTHER NWS AVIATION CUSTOMERS AND PARTNERS
FROM: KEVIN L. JOHNSTON
CHIEF...AVIATION SERVICES BRANCH
SUBJECT: ENHANCEMENT OF GRAPHICAL TURBULENCE GUIDANCE /GTG/:
EFFECTIVE JANUARY 8 2007
NOTE: THE FOLLOWING CHANGES HAVE NO IMPACT ON NOAA WEATHER WIRE
SERVICE SUBSCRIBERS.
EFFECTIVE JANUARY 8 2007 AT 1300 COORDINATED UNIVERSAL TIME /UTC/ THE NWS AVIATION WEATHER CENTER /AWC/ IN KANSAS CITY MISSOURI WILL IMPLEMENT AN ENHANCED VERSION OF THE GRAPHICAL TURBULENCE GUIDANCE /GTG/ PRODUCT. THIS ENHANCEMENT EXTENDS THE VERTICAL DOMAIN OF THE GTG INTO THE MIDDLE LEVEL OF THE ATMOSPHERE ... BETWEEN 10 AND 19 THOUSAND FEET ABOVE MEAN SEA LEVEL /FLIGHT LEVELS 100 TO 190/. TABLE 1 CONTAINS THE COMMUNICATION HEADINGS FOR EACH FLIGHT LEVEL /FL/.
THE GTG IS AN AUTOMATICALLY GENERATED TURBULENCE PRODUCT THAT DIAGNOSES AND PREDICTS THE LOCATION AND INTENSITY OF TURBULENCE OVER THE CONTERMINOUS UNITED STATES AND ADJACENT COASTAL WATERS /CONUS/. THE GTG HAS BEEN AVAILABLE AS AN NWS OPERATIONAL PRODUCT SINCE MARCH 2003.
THE GTG PRODUCES AN ANALYSIS... 1... 2 AND 3-HOUR TURBULENCE FORECAST EVERY HOUR AND A 6... 9 AND 12-HOUR FORECAST EVERY 3 HOURS IN GRIB FORMAT. THIS PRODUCT ALSO PROVIDES A COMPOSITE FIELD REPRESENTING THE MAXIMUM TURBULENCE VALUE BETWEEN 10 AND 45 THOUSAND FEET FOR EACH ANALYSIS AND FORECAST. FOR MORE INFORMATION ABOUT THE GTG PRODUCT, GO TO /USE LOWER CASE LETTERS/: HTTP://ADDS.AVIATIONWEATHER.NOAA.GOV/TURBULENCE/
THE CURRENT PRODUCT DESCRIPTION DOCUMENT FOR THE GTG IS AVAILABLE AT /USE LOWER CASE LETTERS/:
HTTP://PRODUCTS.WEATHER.GOV/
TABLE 1: NEW GTG HEADERS:
FL HEADING
--- -----------
100YVW*70 KKCI
110 YVW*67 KKCI
120 YVW*65 KKCI
130 YVW*62 KKCI
140YVW*60 KKCI
150 YVW*57 KKCI
160 YVW*55 KKCI
170 YVW*53 KKCI
180 YVW*50 KKCI
190 YVW*48 KKCI
WHERE * = A = 00 HOUR ANALYSIS
* = B = 01 HOUR FORECAST
* = C = 02 HOUR FORECAST
* = D = 03 HOUR FORECAST
* = G = 06 HOUR FORECAST
* = J = 09 HOUR FORECAST
* = M = 12 HOUR FORECAST
THE GTG PRODUCT WILL CONTINUE TO BE AVAILABLE IN GRIB FORMAT
FROM THE FOLLOWING SYSTEMS:
1. SATELLITE BROADCAST NETWORK /SBN/ NOAAPORT CHANNEL2. NWS FTP SERVERS AT /USE LOWER CASE LETTERS EXCEPT SL AND DC MUST BE IN UPPER CASE/:
FTP://TGFTP.NWS.NOAA.GOV/SL.US008001/DC.AVSPT 3. THE FAMILY OF SERVICES /FOS/ HIGH RESOLUTION DATA SERVICE AND SERVER ACCESS SERVICE.
ADDITIONAL INFORMATION ON NWS AVIATION PRODUCT DISSEMINATION IS AVAILABLE AT /USE LOWER CASE LETTERS/: HTTP://WEATHER.GOV/OS/DISEMSYS.SHTML IF YOU HAVE QUESTIONS REGARDING THIS PRODUCT...CONTACT:
CLINTON WALLACE CHIEF, AVIATION SUPPORT BRANCH AVIATION WEATHER CENTER7220 NW 101ST TERRACE ROOM 101
KANSAS CITY MO 64153PHONE: 816-584-72048 E-MAIL: CLINTON.WALLACE@xxxxxxxx
THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/
HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM $$ -- Linda Miller - lmiller@xxxxxxxxxxxxxxxx Community Services, Unidata University Corporation for Atmospheric Research P.O. Box 3000 Boulder, CO 80307-3000303-497-8646 fax: 303-497-8690
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