[nws-changes] 20090220: probabilistic tropical cyclone surface wind speed-: ADMIN NOTICE NOUS41 KWBC]



-------- Original Message --------
637 NOUS41 KWBC 201421 
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 09-09
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
920 AM EST FRI FEB 20 2009

TO:         SUBSCRIBERS:
            -FAMILY OF SERVICES
            -NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK OTHER NWS PARTNERS...AND NWS EMPLOYEES 

FROM:       THERESE Z. PIERCE
           MARINE AND COASTAL SERVICES BRANCH CHIEF
SUBJECT: PROBABILISTIC TROPICAL CYCLONE SURFACE WIND SPEED ELEMENTS FOR THE NORTH PACIFIC OCEAN REMAIN EXPERIMENTAL FOR 2009 IN THE NATIONAL DIGITAL FORECAST DATABASE /NDFD/ THE PROBABILISTIC TROPICAL CYCLONE SURFACE WIND SPEED ELEMENTS FOR THE NORTH PACIFIC OCEAN WILL BE PROVIDED AS EXPERIMENTAL PRODUCTS FOR THE NATIONAL DIGITAL FORECAST DATABASE /NDFD/ IN 2009. THESE ELEMENTS WILL BE AVAILABLE THROUGH 120 HOURS AT 6 HOURLY INTERVALS AND 10 KILOMETER SPATIAL RESOLUTION. THESE FORECASTS ARE PROVIDED FOR THREE WIND SPEED THRESHOLDS: 34...50...AND 64 KNOTS. TWO TYPES OF WIND SPEED PROBABILITIES ARE PROVIDED: CUMULATIVE AND INCREMENTAL.
DEFINITIONS OF THESE PROBABILITIES ARE AVAILABLE ON THE NATIONAL HURRICANE CENTER WEB PAGE AT /USE LOWERCASE/: 

    HTTP://WWW.NHC.NOAA.GOV/ABOUTNHCPROBS.SHTML

AND IN THE LIST OF NDFD ELEMENT DEFINITIONS AT /USE LOWERCASE/:

    HTTP://WWW.NWS.NOAA.GOV/NDFD/DEFINITIONS.HTM
PROBABILISTIC TROPICAL CYCLONE SURFACE WIND SPEED ELEMENTS ARE ALREADY AVAILABLE IN OPERATIONAL STATUS FOR THE COTERMINOUS UNITED STATES /CONUS/...THE 16 PRE-DEFINED NDFD CONUS SUBSECTORS AND THE ADJACENT COASTAL WATERS...AT 5 KILOMETER SPATIAL RESOLUTION.
THIS CHANGE EXPANDS THE NDFD AREAL COVERAGE OF THE PROBABALISTIC TROPICAL CYCLONE SURFACE WIND SPEED ELEMENTS TO ALL OF THE EASTERN...CENTRAL...AND WESTERN PACIFIC OCEAN...NORTH OF THE EQUATOR...CORRESPONDING TO AWIPS GRID NUMBER 204. TO SEE AN IMAGE OF THE NORTH PACIFIC OCEAN DOMAIN...SEE /USE LOWERCASE/: HTTP://WWW.NCO.NCEP.NOAA.GOV/PMB/DOCS/ON388/GRIDS/GRID204.GIF
THIS CHANGE PRIMARILY AFFECTS USERS WHO PULL THESE ELEMENTS IN GRIDDED BINARY /GRIB2/ FORMAT FROM THE NWS HTTP OR FTP SERVER VIA THE INTERNET OR SUBSCRIBE TO THE FAMILY OF SERVICES SERVER ACCESS SERVICE.
ADDITIONAL DETAILS ABOUT THIS IMPLEMENTATION...INCLUDING SPECIFIC INFORMATION FOR HTTP AND FTP USERS...ARE AVAILABLE AT /USE LOWER CASE LETTERS/: 

HTTP://WWW.WEATHER.GOV/NDFD/TPC_EXPER_PACIFIC_NDFD_IMPLEM.HTM
DETAILED INFORMATION ON OPTIONS FOR ACCESSING AND USING THE NDFD IS AVAILABLE AT /USER LOWER CASE LETTERS/: 

   HTTP://NDFD.WEATHER.GOV/TECHNICAL.HTM
MORE DETAILS REGARDING THESE ELEMENTS WILL BE PROVIDED IN A PRODUCT DESCRIPTION DOCUMENT /PDD/ TO BE ADDED TO THE NWS CATALOG OF EXPERIMENTAL PRODUCTS ONLINE AT /USE LOWERCASE/: 

   HTTP://PRODUCTS.WEATHER.GOV/VIEWLISTE.PHP
COMMENTS AND FEEDBACK ON THE EXPERIMENTAL PROBABILISTIC TROPICAL CYCLONE SURFACE WIND SPEED ELEMENTS FOR THE NORTH PACIFIC OCEAN WILL BE ACCEPTED THROUGH NOVEMBER 30 2009. LINKS TO ONLINE SURVEYS FOR NDFD CUSTOMERS ARE /USE LOWER CASE LETTERS/:
GRIB2 USERS: HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=TSWD-NDFD-NP 

USERS OF XML SOAP SERVICE:
 HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=XMLSOAP

IN LINK BELOW USE LOWERCASE EXCEPT OGC

GML USERS VIA WEB FEATURE SERVICE:
  HTTP://WWW.WEATHER.GOV/FORECASTS/XML/OGC_SERVICES

NDFD ONLINE GRAPHICS:
  HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=GFP
THESE NEW ELEMENTS FOR THE NORTH PACIFIC OCEAN WILL REMAIN IN EXPERIMENTAL STATUS UNTIL ALL FEEDBACK RECEIVED BY THE CLOSE OF THE COMMENT PERIOD HAS BEEN ASSESSED AND A TECHNICAL ANALYSIS IS COMPLETED. AT THAT TIME NWS WILL DETERMINE WHETHER TO TRANSITION THESE EXPERIMENTAL ELEMENTS TO OPERATIONAL STATUS... DISCONTINUE THEM...OR REVISE AND RETAIN THEM AS EXPERIMENTAL ELEMENTS. 

IF YOU HAVE QUESTIONS REGARDING THIS NOTICE...PLEASE CONTACT:

    TIMOTHY SCHOTT
    NATIONAL WEATHER SERVICE
    MARINE AND COASTAL SERVICES BRANCH
    1325 EAST WEST HIGHWAY
    SILVER SPRING MARYLAND 20910
    EMAIL:  TIMOTHY.SCHOTT@xxxxxxxx

FOR TECHNICAL QUESTIONS ON THE NDFD DATA...PLEASE CONTACT:

    DAVID RUTH
    CHIEF...MESOSCALE PREDICTION BRANCH
    NATIONAL WEATHER SERVICE
    OFFICE OF SCIENCE AND TECHNOLOGY
    1325 EAST WEST HIGHWAY
    SILVER SPRING MARYLAND 20910
    E-MAIL:  DAVID.RUTH@xxxxxxxx
TECHNICAL IMPLEMENTATION NOTICES SPECIFICALLY RELATED TO THE NDFD ARE AVAILABLE ONLINE AT /USE LOWERCASE/: 

    HTTP://WWW.WEATHER.GOV/NDFD/TINS.HTM
ALL NWS TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT /USE LOWERCASE/ 

    HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM

$$