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NOUS41 KWBC 102127
PNSWSH
PUBLIC INFORMATION STATEMENT...SERVICE CHANGE NOTICE 03-17
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
425 PM EST MON MAR 10 2003
TO FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER
WIRE SERVICE /NWWS/ SUBSCRIBERS...EMERGENCY MANAGERS
WEATHER INFORMATION NETWORK /EMWIN/ CUSTOMERS...
NOAAPORT SUBSCRIBERS...OTHER NATIONAL WEATHER SERVICE
/NWS/ CUSTOMERS AND PARTNERS...AND NWS EMPLOYEES
FROM JAMES E. LEE
CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH
SUBJECT PROPOSED CHANGES TO HPC/S NORTH AMERICAN SURFACE
ANALYSIS PRODUCTS...EFFECTIVE JUNE 3 2003.
RESPONSES REQUESTED BY MAY 9 2003
THE NATIONAL WEATHER SERVICE IS PROPOSING MODIFICATIONS TO THE
NORTH AMERICAN SURFACE ANALYSIS...PREPARED BY THE NATIONAL
CENTERS FOR ENVIRONMENTAL PREDICTION/S /NCEP/ HYDROMETEOROLOGICAL
PREDICTION CENTER /HPC/...AND LISTED IN TABLE 1. AS PART OF A
SERIES OF CHANGES TO THE NCEP SURFACE ANALYSIS SUITE...THE AREA
OF COVERAGE OF THE NORTH AMERICAN SURFACE ANALYSIS WILL BE
REDUCED AND THE CHARTS WILL BE ISSUED EARLIER...EFFECTIVE JUNE 3
2003 AT 1500 UNIVERSAL COORDINATED TIME /UTC/.
TABLE 1. HPC SURFACE ANALYSIS WHOSE AREA OF COVERAGE WILL BE
REDUCED ON JUNE 3 2003
PRODUCT WMO HEADING AWIPS ID
SURFACE FRONTS PYAA98 KWNO RBG90F
SURFACE PRESSURE PPAA89 KWNO RBG90I
BY REDUCING THE AREA OF COVERAGE OVER THE EASTERN PACIFIC AND
WESTERN ATLANTIC OCEANS...THE HPC WILL BE ABLE TO RELEASE THE
ANALYSIS APPROXIMATELY 30 MINUTES EARLIER...ABOUT 1 HOUR AFTER
OBSERVATION TIME.
THOSE NEEDING AN ANALYSIS OVER THE OCEANS CAN USE THE ANALYSES
PRODUCED BY THE OCEAN PREDICTION CENTER /OPC/ AND THE TROPICAL
PREDICTION CENTER /TPC/...AND LISTED IN TABLE 2. NOTE...THERE
WILL BE NO CHANGES TO THE AREA OF COVERAGE OR THE RELEASE TIMES
OF THE SURFACE ANALYSES ISSUED BY THE OPC AND THE TPC.
TABLE 2. OPC AND TPC SURFACE ANALYSES...NO CHANGE TO THE AREA OF
COVERAGE
PRODUCT WMO HEADING AWIPS ID
OPC ATLANTIC SURFACE ANALYSES PYAA89 KWNM RBGRA0
OPC PACIFIC SURFACE ANALYSIS PYBA89 KWNM RBGRP0
TPC SURFACE ANALYSIS PYNA98 KNHC RBGTSA
THE HPC ANALYSIS CHANGES ARE PART OF NCEP/S PLAN TO IMPLEMENT A
SEAMLESS LARGE SCALE SURFACE ANALYSIS COVERING THE COMBINED
ANALYSIS AREAS OF THE OPC...TPC...AND HPC. CURRENT PLANS CALL
FOR THIS LARGE SCALE NCEP ANALYSIS TO COVER THE AREA FROM ROUGHLY
EAST ASIA ACROSS THE PACIFIC OCEAN AND THE CONUS TO THE WEST
COAST OF EUROPE AND AFRICA. THE AREA WOULD EXTEND FROM
APPROXIMATELY 60N TO 20S LATITUDE. IT IS EXPECTED THE LARGE
SCALE NCEP ANALYSIS WILL BE MADE AVAILABLE APPROXIMATELY THREE
AND ONE HALF HOURS AFTER OBSERVATION TIME EVERY SIX HOURS. MORE
DETAILS ON NCEP/S LARGE SCALE SURFACE ANALYSIS...INCLUDING
IMPLEMENTATION DATE...WILL BE ANNOUNCED IN A FUTURE SERVICE
CHANGE NOTICE.
EXAMPLES OF THE NEW HPC NORTH AMERICAN SURFACE ANALYSIS AND
FREQUENTLY ASKED QUESTIONS ABOUT THE NCEP SURFACE ANALYSIS
PROGRAM ARE ON THE INTERNET AT /USE LOWER CASE LETTERS/
WWW.HPC.NCEP.NOAA.GOV/HTML/NEW_NOAM.SHTML
PLEASE REVIEW THE INFORMATION PROVIDED ON THE INTERNET AT THE URL
ABOVE. IF YOU HAVE ANY QUESTIONS OR CONCERNS ABOUT HPC/S NORTH
AMERICAN SURFACE ANALYSIS CHANGE...CONTACT THE FOLLOWING PERSONS
BY MAY 9 2003.
KEVIN MCCARTHY...DEPUTY DIRECTOR
NCEP HPC
CAMP SPRINGS MD
PHONE 301-763-8000 X 7304
EMAIL KEVIN.MCCARTHY@xxxxxxxx
OR
ROBERT KELLY...CHIEF
NCEP/HPC FORECAST OPERATIONS BRANCH
CAMP SPRINGS MD
PHONE 301-763-8000 X 7306
EMAIL ROBERT.KELLY@xxxxxxxx
THIS NOTICE AND OTHER SERVICE CHANGE NOTICES ARE ON THE INTERNET
AT /USE LOWER CASE LETTERS/
WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
$$
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