20070413: VTEC hard freeze

[Linda Miller]

NOUS41 KWBC 131520
PNSWSH

SERVICE CHANGE NOTICE 07-19
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1120 AM EDT FRI APR 13 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: ADDITION OF VALID TIME EVENT CODES FOR HARD FREEZE
         WATCHES AND WARNING EFFECTIVE WITH AWIPS BUILD 7.2

EFFECTIVE WITH EACH NWS 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/ PHENOMENA CODE 
HZ.W AND HARD FREEZE WARNINGS USING THE VTEC PHENOMENA CODE HZ.A.  
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 NWS 
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 at 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

$$
NNNN


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