20070313: enhancement to VORTEX data-: ADMIN NOTICE NOUS41 KWBC]

[Linda Miller]

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

913 
NOUS41 KWBC 131735
PNSWSH

SERVICE CHANGE NOTICE 07-08
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
135 PM EDT TUE MAR 7 2007

TO:    FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA 
    WEATHER WIRE SERVICE /NWWS/ SUBSCRIBERS...EMERGENCY 
    MANAGERS WEATHER INFORMATION NETWORK /EMWIN/
    SUBSCRIBERS...NOAAPORT SUBSCRIBERS...OTHER NATIONAL 
    WEATHER SERVICE /NWS/ CUSTOMERS AND PARTNERS...
    AND NWS EMPLOYEES

FROM:    THERESE Z. PIERCE
    CHIEF...MARINE AND COASTAL SERVICES BRANCH

SUBJECT:    ENHANCEMENT TO THE VORTEX DATA MESSAGE PRODUCT: 
            EFFECTIVE MAY 15 2007

ITEM F IN THE RECONNAISSANCE VORTEX DATA MESSAGE /VDM/ PRODUCT IS 
THE MAXIMUM FLIGHT-LEVEL WIND OBSERVED ON THE INBOUND LEG PRIOR 
TO THE STORM CENTER FIX.  CURRENTLY IF A HIGHER WIND IS OBSERVED 
ON THE OUTBOUND LEG IT IS REPORTED IN ITEM P ON THE SUBSEQUENT 
VORTEX MESSAGE...USUALLY 2 HOURS LATER. IN ADDITION WIND MAXIMA 
OBSERVED AFTER THE FINAL FIX OF A MISSION ARE NOT TRANSMITTED 
THROUGH A SUBSEQUENT VDM.

EFFECTIVE ON MAY 15 2007...IF AN OBSERVED OUTBOUND WIND MAXIMUM 
IS HIGHER THAN THE INBOUND WIND REPORTED IN ITEM F...THEN THE 
OUTBOUND MAXIMUM WILL BE REPORTED IN THE VDM FOR THE FIX JUST 
OBTAINED. IF...AFTER THE TRANSMISSION OF THE VDM...A HIGHER 
OUTBOUND WIND MAXIMUM IS OBSERVED...THEN A CORRECTED VORTEX 
MESSAGE WILL BE TRANSMITTED AT THE CONCLUSION OF THE OUTBOUND LEG 
WITH THE UPDATED OUTBOUND MAXIMUM. OUTBOUND WIND MAXIMA WILL BE 
REPORTED IN ITEM P.  

DOC AND DOD HURRICANE RECONNAISSANCE AIRCRAFT PROVIDE VORTEX DATA 
MESSAGES /VDM/ AS PART OF THE NATIONAL HURRICANE OPERATIONS PLAN 
/NHOP/. THESE PRODUCTS AND ASSOCIATED HEADERS ARE PROVIDED IN 
TABLES 1 AND 2 FOR THE ATLANTIC AND PACIFIC HURRICANE BASINS 
RESPECTIVELY.

TABLE 1. VDM FOR THE ATLANTIC HURRICANE BASIN

FEDERAL AGENCY   WMO HEADING

DOC URNT12 KWBC
DOD URNT12 KNHC

TABLE 2. VDM FOR THE EAST...CENTRAL...AND WEST PACIFIC HURRICANE
         BASINS

FEDERAL AGENCY          WMO HEADING

DOCURPN12 KWBC
DODUPPN12 KNHC

COMPLETE VDM FORMATS ARE PROVIDED IN THE NHOP...SEE TABLE 5-2 AND 
FIGURE 5-6. THE NHOP IS ONLINE AT /USE LOWER CASE LETTERS/:

HTTP://WWW.OFCM.GOV/NHOP

THE 2006 NHOP IS NOW POSTED ON THE INTERNET. THE 2007 NHOP WILL 
BE POSTED BY JUNE 1 2007.
                       
IF YOU HAVE ANY QUESTIONS...PLEASE CONTACT:

     CHRIS SISKO
     TROPICAL PREDICTION CENTER
     NATIONAL HURRICANE CENTER 
     11691 SW 17TH STREET
     MIAMI FLORIDA  33165
     PHONE: 305-229-4431
     EMAIL: CHRIS.A.SISKO at NOAA.GOV

THIS AND OTHER SERVICE CHANGE NOTICES CAN BE FOUND ONLINE AT  
/USE LOWER CASE/:

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

$$



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