970217: 5-day precip chart changes-NOUS (fwd)

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: 970217: 5-day precip chart changes-NOUS (fwd)
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Fri, 7 Feb 1997 06:54:18 -0700 (MST)

512 
NOUS41 KWBC 062055
PNSNMC
 
NATIONAL TECHNICAL IMPLEMENTATION MESSAGE /NTIM/ 97-07
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
400 PM EST THU FEB 6 1997
 
TO         FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER WIRE    
           SERVICE /NWWS/ SUBSCRIBERS...OTHER NATIONAL WEATHER
           SERVICE /NWS/ CUSTOMERS...NWS EMPLOYEES
 
FROM       THERESE PIERCE...CHIEF...HYDROMETEOROLOGICAL SERVICES
 
SUBJECT    PROPOSED CHANGES TO THE 5-DAY PRECIPITATION CHART           
           PRODUCED BY THE NATIONAL CENTERS FOR ENVIRONMENTAL          
           PREDICTION /NCEP/...EFFECTIVE MONDAY MARCH 03 1997
 
      EFFECTIVE MONDAY..MARCH 03 1997...AT 07:00 A.M.... EASTERN
STANDARD TIME...1200 UNIVERSAL COORDINATED TIME /UTC/... THE 5-DAY
TOTAL PRECIPITATION PRODUCT PRODUCED BY THE NCEP
HYDROMETEOROLOGICAL PREDICTION CENTER /HPC/ WILL NO LONGER EXIST
IN ITS CURRENT FORMAT DUE TO A PLANNED CHANGE IN OPERATIONAL
COMPUTER SYSTEMS.
 
      THIS PRODUCT CURRENTLY IS ISSUED ON THE AUTOMATION OF FIELD
OPERATIONS AND SERVICES /AFOS/ SYSTEM AS 95E AND IS PART OF THE 3-
PANEL DIFAX CHART NUMBER 411... WHICH INCLUDES THE 5-DAY MEAN
MAXIMUM AND MINIMUM TEMPERATURES /WHICH WILL NOT BE CHANGED/.   
THIS PRODUCT IS DEFINED BY THE THREE CLASSES... LIGHT... MODERATE...
AND HEAVY.   TWO ADDITIONAL DESIGNATORS... PRECIPITATION AND NO
PRECIPITATION ARE USED IN THE DRIER REGIONS OF THE SOUTHWEST.   THE
THREE CLASSES WERE DEFINED MANY YEARS AGO BY STATISTICAL
CLIMATOLOGY AND DO NOT ADEQUATELY DEFINE THE PRESENT DAY SKILL
OR ACCURACY.    
 
      THE CHART WILL BE CHANGED ON MARCH 03 1997 TO A 5-DAY
PRECIPITATION FORECAST THAT IS ISOHYETAL.  THE SET OF STANDARD
ISOHYETS WILL BE THE 0.25... 0.50... 1.00... 3.00... AND OCCASIONALLY
5.00 INCH VALUED ISOHYETS.   THE FORECAST WILL BE VALID FOR  5 DAYS
ENDING 1200 UTC.  THIS MODIFIED PRODUCT WILL BE ISSUED ON AFOS USING
THE SAME AFOS PIL HEADER /95E/ AND ON DIFAX CHART NUMBER 411.
 
      IF YOU HAVE ANY QUESTIONS... CONTACT THE FOLLOWING:
 
      FORECAST OPERATIONS BRANCH CHIEF
      NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION
      NOAA SCIENCE CENTER
      5200 AUTH ROAD... ROOM 410
      CAMP SPRINGS  MD 20746
      301-763-8000 EXTENSION 7317 OR 7354
 
      NOTE: THIS AND OTHER NWS SERVICE CHANGE NOTIFICATIONS ARE
POSTED AT THIS URL /IN LOWER CASE LETTERS/:
 
      HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM/
 
END