PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LUBBOCK TX
900 AM CST THU DEC 10 2009

TO:         SUBSCRIBERS: NWS PARTNERS...USERS AND EMPLOYEES

SUBJECT:    NATIONAL CHANGE IN MINIMUM HAIL SIZE CRITERION
            FOR ISSUING SEVERE THUNDERSTORM WARNING /SVR/
            AND SEVERE WEATHER STATEMENT /SVS/ PRODUCTS
            EFFECTIVE JANUARY 5 2010

EFFECTIVE TUESDAY JANUARY 5 2010 AT 0001 COORDINATED UNIVERSAL TIME
/UTC/...ALL NWS WEATHER FORECAST OFFICES /WFOS/ WILL OPERATIONALLY
CHANGE THE MINIMUM HAIL SIZE CRITERION USED TO ISSUE SEVERE
THUNDERSTORM WARNING /SVR/ AND SEVERE WEATHER STATEMENT /SVS/
PRODUCTS FROM 3/4 INCH /PENNY/ DIAMETER OR LARGER HAIL TO 1 INCH
/QUARTER/ DIAMETER OR LARGER HAIL.

NO CHANGE IS BEING MADE TO THE SVR AND SVS PRODUCT WIND CRITERION
OF WIND GUSTS EQUAL TO OR IN EXCESS OF 50 KNOTS /58 MPH/.

A PUBLIC INFORMATION STATEMENT /PNS/ SOLICITING COMMENTS REGARDING
THIS CHANGE WAS ISSUED SEPTEMBER 23 2009 /USE LOWERCASE/:

    HTTP://WWW.WEATHER.GOV/OS/NOTIFICATION/PNS09_1_INCH_HAIL.TXT

NWS RECEIVED 63 COMMENTS IN RESPONSE TO THE PNS...54 OF WHICH
/86 PERCENT/ SUPPORTED THIS CHANGE. A WEB PAGE WILL BE CREATED TO
ADDRESS ALL COMMENTS SINCE SOME COMMENTS INDICATED A NEED FOR
ADDITIONAL OUTREACH. THIS WEB PAGE WILL BE AVAILABLE BY DECEMBER 15
2009 AND WILL BE PUBLICIZED VIA ANOTHER PNS.

NWS REVIEWED ALL COMMENTS BEFORE DECIDING TO CHANGE THE MINIMUM HAIL
SIZE CRITERION FOR SVR AND SVS PRODUCTS.

CENTRAL AND WESTERN REGION WFOS CURRENTLY ISSUE SVR AND SVS PRODUCTS
EXPERIMENTALLY USING THE 1 INCH /QUARTER/ DIAMETER OR LARGER HAIL
SIZE CRITERION /USE LOWER CASE/:

      HTTP://WWW.NWS.NOAA.GOV/OM/NOTIFICATION/SCN09-19HAIL_CHANGE.TXT
 AND  HTTP://WWW.NWS.NOAA.GOV/OM/NOTIFICATION/SCN09-36WR_HAIL_EXP.TXT
THESE WFOS WILL CONTINUE TO ISSUE 1 INCH /QUARTER/ HAIL SIZE
CRITERION PRODUCTS EXPERIMENTALLY THROUGH JANUARY 4 2010. ALL NWS
WFOS WILL ADOPT THE NEW CRITERION OPERATIONALLY ON JANUARY 5 2010.

FOR FURTHER INFORMATION REGARDING THIS CHANGE PLEASE CONTACT:

    JOHN T FERREE
    FIRE AND PUBLIC WEATHER SERVICES BRANCH
    120 DAVID L. BOREN BLVD SUITE 2312
    NORMAN OK 73072
    405-325-2209
    JOHN.T.FERREE@NOAA.GOV

OR

    JODY JAMES
    WARNING COORDINATION METEOROLOGIST
    NATIONAL WEATHER SERVICE LUBBOCK TX
    2579 SOUTH LOOP 289 SUITE 100
    LUBBOCK TX 79423
    806-745-4260
    JODY.JAMES@NOAA.GOV

NATIONAL SERVICE CHANGE NOTICES ARE ONLINE AT /USE LOWERCASE/:

    HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.