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20061221: UGC-avalanche warnings Fwd: ADMIN NOTICE NOUS41 KWBC]

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-------- Original Message --------

297 NOUS41 KWBC 211527
PNSWSH

SERVICE CHANGE NOTICE 06-46
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1027 AM EST THU DEC 21 2006

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
        FIRE AND PUBLIC WEATHER SERVICES BRANCH CHIEF

SUBJECT: UNIVERSAL GEOGRAPHIC CODE /UGC/ CHANGE FOR AVALANCHE
WATCHES/WARNINGS IN CERTAIN MOUNTAINOUS AREAS EFFECTIVE IMMEDIATELY

EFFECTIVE IMMEDIATELY CERTAIN NWS WEATHER FORECAST OFFICES /WFO/ IN MOUNTAINOUS AREAS OF NWS CENTRAL...SOUTHERN...AND WESTERN REGIONS MAY BEGIN USING THE ZONE /Z/ FORM OF THE UNIVERSAL GEOGRAPHIC CODE /UGC/ INSTEAD OF THE COUNTY /C/ FORM OF THE UGC FOR AVALANCHE WATCH /AVA/ AND AVALANCHE WARNING /AVW/ PRODUCTS. THE UGC CODE IS EMBEDDED WITHIN THE VALID TIME EVENT CODE /VTEC/ OF THESE PRODUCTS.

AFFECTED WFOS WILL WORK CLOSELY WITH THEIR USERS OF AVA/AVW PRODUCTS TO ENSURE USERS ARE AWARE OF THIS CHANGE IF IT AFFECTS AVA/AVW PRODUCTS THEY ISSUE. USERS UNSURE WHETHER THIS CHANGE AFFECTS AVA/AVW PRODUCTS THEY USE SHOULD CONTACT THE ISSUING WFO FOR GUIDANCE.

RECENT EXPERIENCE HAS SHOWN THAT USING THE COUNTY /C/ FORM OF THE UGC FOR AVA/AVW PRODUCTS IN MOUNTAINOUS AREAS OVERSTATES THE INTENDED WATCH/WARNING AREA. IN ADDITION USING THE ZONE /Z/ FORM OF THE UGC FOR AVA/AVW PRODUCTS MORE CLOSELY ALIGNS THESE PRODUCTS WITH OTHER WINTER WEATHER PRODUCTS THAT USE THE ZONE /Z/ FORM OF THE UGC.

TABLE 1 BELOW DETAILS THE GENERIC AWIPS ID AND WMO HEADINGS OF AVA/AVW PRODUCTS AFFECTED BY THIS CHANGE.

TABLE 1. AVA/AVW AWIPS ID AND WMO HEADINGS

PRODUCT AWIPS ID WMO HEADING
AVALANCHE WATCH     AVAXXX    WOUSII KYYY
AVALANCHE WARNING   AVWXXX    WOUSII KYYY

NOTE: XXX IS THE THREE-LETTER WFO IDENTIFIER AND YYY IS THE AWIPS NODE.

AGAIN ...AFFECTED WFOS WILL WORK CLOSELY WITH THEIR USERS OF AVA/AVW PRODUCTS TO ENSURE USERS ARE AWARE OF THIS CHANGE IF IT AFFECTS AVA/AVW PRODUCTS THEY ISSUE. USERS UNSURE WHETHER THIS CHANGE AFFECTS AVA/AVW PRODUCTS THEY USE SHOULD CONTACT THE ISSUING WFO FOR GUIDANCE. ALTHOUGH THIS NOTIFICATION IS LESS THAN THE REQUIRED 120 DAYS AS SPECIFIED BY NWSI 10-1805... THE NWS BELIEVES IMMEDIATE IMPLEMENTATION IS WARRANTED BECAUSE AVALANCHE DANGER ALREADY EXISTS FOR WFOS WITH WARNING RESPONSIBILITY FOR MOUNTAINOUS AREAS.

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
    EMAIL: PAUL.STOKOLS@xxxxxxxx

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

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

$$


--
Linda Miller - lmiller@xxxxxxxxxxxxxxxx
Community Services, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303-497-8646 fax: 303-497-8690

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