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PNSWSH

SERVICE CHANGE NOTICE 07-19...CORRECTED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
750 AM EDT MON APR 16 2007

TO:      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...NWS EMPLOYEES

FROM:    ELI JACKS
         CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH

SUBJECT: CORRECTION: ADDITION OF VALID TIME EVENT CODES FOR HARD 
         FREEZE WATCHES AND WARNING EFFECTIVE WITH AWIPS BUILD 
         7.2

CORRECTED VALID TIME EVENT CODE /VTEC/ EVENT CODES.  NON-
PRECIPITAION WEATHER WATCHES USE VTEC EVENT CODE A AND WARNINGS 
USE EVENT CODE W. 

EFFECTIVE WITH EACH NATIONAL WEATHER SERVICE FORECAST OFFICE/S 
/WFO/ INSTALLATION OF AWIPS BUILD 7.2...EACH WFO WILL BE ABLE TO 
ISSUE HARD FREEZE WATCHES USING THE VALID TIME EVENT CODE /VTEC/ 
EVENT CODE HZ.A AND HARD FREEZE WARNINGS USING THE VTEC EVENT 
CODE HZ.W.  EACH WFO WILL COORDINATE WITH THEIR RESPECTIVE 
REGIONAL HEADQUARTERS TO DETERMINE IF ISSUING HARD FREEZE 
WATCHES/WARNINGS IS APPROPRIATE FOR THEIR PUBLIC WARNING ZONES.

AWIPS BUILD 7.2 SHOULD BE DEPLOYED BY THE END OF APRIL 2007.  

THESE PRODUCTS...IF DEEMED APPROPRIATE...WILL BE ISSUED FOR 
FORECAST COLD TEMPERATURES /LOCALLY DEFINED CRITERIA/ USING THE 
NON-PRECIPITATION WEATHER WARNING PRODUCT CATEGORY NPW.  

GENERIC AWIPS ID          GENERIC WMO ID
NPWXXX                    WWAA7I CCCC

NOTE:
1. XXX - IS THE THREE-LETTER WFO IDENTIFIER /E.G. AKQ IS 
WAKEFIELD VA/
2. AA - IS THE TWO-LETTER GEOGRAPHIC IDENTIFIER /E.G. US IS 
UNITED STATES/
3. I - IS THE US STATE CROSS REFERENCE /E.G. 5 IS ROCKY 
MOUNTAINS/
4. CCCC - IS THE FOUR-LETTER WFO COMMUNICATIONS ID /E.G. KBOI IS 
BOISE ID/ 

THE ABOVE CHANGE WILL BE INCLUDED IN THE NEXT UPDATE TO NATIONAL 
WEATHER SERVICE INSTRUCTION /NWSI/ 10-515...NON-PRECIPITATION 
WEATHER PRODUCTS SPECIFICATION.

IF YOU HAVE QUESTIONS ABOUT THESE CHANGES PLEASE CONTACT:

     PAUL STOKOLS
     NATIONAL WEATHER SERVICE
     1325 EAST WEST HIGHWAY
     SILVER SPRING MD 20910
     PHONE: 301-713-1867 EXT. 139
     EMAIL: PAUL.STOKOLS@NOAA.GOV

THIS AND ALL OTHER NWS SERVICE CHANGE NOTICES ARE POSTED ONLINE 
AT /USE LOWER CASE LETTERS/:

     HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

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