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-------- Original Message --------913 NOUS41 KWBC 131735
PNSWSH SERVICE CHANGE NOTICE 07-08 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 135 PM EDT TUE MAR 7 2007TO: 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 BRANCHSUBJECT: 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/NHOPTHE 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@xxxxxxxx
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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