-------- Original Message --------
659
NOUS41 KWBC 281912
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 09-38
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
310 PM EDT WED OCT 28 2009
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...AND NWS EMPLOYEES
FROM: ELI JACKS
CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH
SUBJECT: DAY 4 TO 8 CONVECTIVE OUTLOOK ELEMENT IN THE NATIONAL
DIGITAL FORECAST DATABASE /NDFD/ TRANSITIONS FROM
EXPERIMENTAL TO OPERATIONAL EFFECTIVE DECEMBER 1 2009
EFFECTIVE TUESDAY DECEMBER 1 2009 AT 1400 COORDINATED UNIVERSAL
TIME /UTC/...THE DAY 4 TO 8 CONVECTIVE OUTLOOK ISSUED BY THE
STORM PREDICTION CENTER /SPC/ IN THE NDFD WILL TRANSITION FROM
EXPERIMENTAL TO OPERATIONAL STATUS.
THE NWS BEGAN ISSUING THE DAY 4 TO 8 CONVECTIVE OUTLOOK GRID
EXPERIMENTALLY ON SEPTEMBER 30 2008. GRID POINT VALUES ARE
EITHER 5 /FIVE/ OR 0 /ZERO/. A GRID POINT VALUE OF 5 /FIVE/ IS A
POINT WHERE AT LEAST A 30 PERCENT PROBABILITY FOR SEVERE
THUNDERSTORMS EXISTS. THIS IS EQUIVALENT TO A HIGHER END SLIGHT
RISK THREAT. A GRID POINT VALUE OF 0 /ZERO/ IS A POINT WHERE
EITHER THE PREDICTABILITY OF SEVERE WEATHER OR THE POTENTIAL FOR
SEVERE WEATHER IS TOO LOW. THIS ELEMENT IS AVAILABLE FROM THE
NDFD ONCE A DAY AT 1200 UTC FOR THE CONTERMINOUS U.S. /CONUS/
AND THE 16 PRE-DEFINED NDFD CONUS SUBSECTORS.
NWS WILL PROVIDE MORE DETAILS REGARDING THE DAY 4 TO 8
CONVECTIVE OUTLOOK ELEMENT IN A PRODUCT DESCRIPTION DOCUMENT
/PDD/ WHICH WILL BE ADDED TO THE ONLINE CATALOG OF NWS PRODUCTS
AND SERVICES BEFORE THE IMPLEMENTATION DATE. REFER TO /USE
LOWERCASE/:
HTTP://PRODUCTS.WEATHER.GOV/VIEWLIST.PHP
WITH THIS IMPLEMENTATION...THE DAY 4 TO 8 CONVECTIVE OUTLOOK
ELEMENT WILL BE AVAILABLE FROM NDFD IN FOUR OF THE STANDARD
METHODS:
- GRIDDED BINARY 2 /GRIB2/ FILES VIA HYPERTEXT TRANSFER
PROTOCOL /HTTP/ AND FILE TRANSFER PROTOCOL /FTP/
- EXTENSIBLE MARKUP LANGUAGE /XML/ VIA THE SIMPLE OPEN ACCESS
PROTOCOL /SOAP/ SERVICE
- GRAPHICS MARKUP LANGUAGE /GML/ VIA THE WEB FEATURE SERVICE
/WFS/
- GRAPHICS VIA WEB BROWSER
THIS CHANGE PRIMARILY AFFECTS USERS WHO PULL NDFD ELEMENTS IN
THE GRIB2 FORMAT FROM THE NWS FTP SERVER ...EITHER VIA THE
INTERNET OR THE FAMILY OF SERVICES /FOS/ SERVER ACCESS
SERVICE...AND USERS WHO PULL HTML FILES FROM THE NWS HTTP
SERVER. THOSE USERS WILL NEED TO PULL THESE ELEMENTS FOR THE
DOMAINS OF INTEREST FROM A DIFFERENT UNIFORM RESOURCE LOCATOR
/URL/ AND MAY NEED TO UPDATE PROCEDURES AND SCRIPTS TO ENSURE
CONTINUED RECEIPT OF THE DATA.
FOR USERS WHO KEY ON THE WORLD METEOROLOGICAL ORGANIZATION /WMO/
SUPER HEADINGS TO ACCESS NDFD ELEMENTS...THE LIST OF WMO SUPER
HEADINGS FOR STORM PREDICTION CENTER ELEMENTS IS ONLINE AT /USE
LOWERCASE/:
HTTP://WWW.WEATHER.GOV/DATAMGMT/DOC/SPC.HTML
USERS OF THE NDFD IN XML VIA THE SOAP SERVICE...VIA THE NDFD WMS
IN GML AND USERS WHO VIEW THE ONLINE NDFD GRAPHICS VIA WEB
BROWSER ARE NOT IMPACTED BY THIS IMPLEMENTATION. THESE USERS CAN
CONTINUE THE SAME METHODS THEY CURRENTLY USE TO ACQUIRE THESE
ELEMENTS FROM THE DOMAIN OF INTEREST.
DETAILS REGARDING THIS IMPLEMENTATION...INCLUDING SPECIFIC
INFORMATION FOR HTTP AND FTP USERS...ARE AVAILABLE AT /USE
LOWERCASE/:
HTTP://WWW.WEATHER.GOV/NDFD/SPC_SWODY48_IMPLEM.HTM
GENERAL INFORMATION ON ACCESSING AND USING NDFD ELEMENTS IS
AVAILABLE AT /USER LOWERCASE/:
HTTP://NDFD.WEATHER.GOV/TECHNICAL.HTM
IF DECEMBER 1 2009 IS A CRITICAL WEATHER DAY...THIS
IMPLEMENTATION MAY BE POSTPONED. USERS WILL BE NOTIFIED OF THAT
DECISION VIA A TECHNICAL IMPLEMENTATION NOTICE /TIN/ AS FAR IN
ADVANCE AS POSSIBLE.
FOR GENERAL QUESTIONS REGARDING THE NDFD...PLEASE EMAIL:
NWS.NDFD@xxxxxxxx
IF YOU HAVE ANY QUESTIONS REGARDING THESE PRODUCTS...PLEASE
CONTACT:
DR. RUSSELL SCHNEIDER GREGORY GROSSHANS
CHIEF SCIENCE SUPPORT BRANCH METEOROLOGIST
STORM PREDICTION CENTER STORM PREDICTION CENTER
NORMAN OKLAHOMA NORMAN OKLAHOMA
405-325-2066 405-325-2462
RUSSELL.SCHNEIDER@xxxxxxxx GREGORY.GROSSHANS@xxxxxxxx
IF YOU HAVE QUESTIONS REGARDING THIS NOTICE...PLEASE CONTACT:
KEVIN SCHARFENBERG
NWS SEVERE STORMS SERVICES COORDINATOR
OFFICE OF CLIMATE WATER AND WEATHER SERVICES
NORMAN OKLAHOMA
KEVIN.SCHARFENBERG@xxxxxxxx
IF YOU HAVE TECHNICAL QUESTIONS REGARDING THE NDFD DATA...PLEASE
CONTACT:
DAVID RUTH
CHIEF...MESOSCALE PREDICTION BRANCH
NWS OFFICE OF SCIENCE AND TECHNOLOGY
SILVER SPRING MARYLAND
DAVID.RUTH@xxxxxxxx
TINS SPECIFICALLY RELATED TO THE NDFD ARE AVAILABLE AT /USE
LOWER CASE/:
HTTP://WWW.WEATHER.GOV/NDFD/TINS.HTM
NWS NATIONAL TINS ARE AVAILABLE AT /USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
$$
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