20060831: GTG correction-Fwd: ADMIN NOTICE NOUS41 KWBC]

[Linda Miller]

-------- Original Message --------

217 
NOUS41 KWBC 311633
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 06-59...CORRECTED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1235 PM EDT THU AUG 31 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:  CORRECTED: ENHANCEMENT OF GRAPHICAL TURBULENCE 
          GUIDANCE /GTG/: EFFECTIVE JANUARY 8 2007

REFER TO: TECHNICAL IMPLEMENTATION NOTICE /TIN/ 06-59
          TRANSMITTED ON AUGUST 29 2006

CORRECTED TO ADD COMPOSITE HEADINGS TO TABLE 1 AND TO CORRECT URL 
FOR MORE INFORMATION ON GTG PRODUCT.

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/DESCRIPTION.PHP

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
---------   -----------
   100      YVW*70 KKCI
   110      YVW*67 KKCI
   120      YVW*65 KKCI
   130      YVW*62 KKCI
   140      YVW*60 KKCI
   150      YVW*57 KKCI
   160      YVW*55 KKCI
   170      YVW*53 KKCI
   180      YVW*50 KKCI
   190      YVW*48 KKCI
COMPOSITE   ZVW*50 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 CHANNEL
    
2. 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 CENTER
7220 NW 101ST TERRACE    
ROOM 101
KANSAS CITY MO 64153
PHONE: 816-584-72048    
E-MAIL: CLINTON.WALLACE at NOAA.GOV

THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE 
AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/

      HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

$$
NNNN


-- 
Linda Miller - lmiller at unidata.ucar.edu
Community Services, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303-497-8646 fax: 303-497-8690 


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