20040227: ultraviolet

NOUS41 KWBC 271835
PNSWSH

SERVICE CHANGE NOTICE 04-08
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
140 PM EST FRI FEB 27 2004

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:     JAMES E. LEE
         CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH

SUBJECT:  ULTRAVIOLET INDEX PRODUCT CHANGES...EFFECTIVE
         MAY 18 2004

ON TUESDAY...MAY 18 2004 AT APPROXIMATELY 1800 COORDINATED
UNIVERSAL TIME /UTC/...THE NATIONAL WEATHER SERVICE /NWS/... AT
THE REQUEST OF THE ENVIRONMENTAL PROTECTION AGENCY /EPA/...WILL
MAKE MINOR CHANGES TO THE ULTRAVIOLET INDEX /UVI/ PRODUCT.  THESE
CHANGES WILL RESULT IN SLIGHTLY REVISED UVI EXPOSURE CATEGORIES
CONSISTENT WITH THE EXPOSURE CATEGORIES ESTABLISHED BY THE WORLD
HEALTH ORGANIZATION /WHO/.  NOTE: THE SCIENCE BEHIND THE UVI AND
THE FORECAST VALUES ARE NOT CHANGING.

THE UVI EXPOSURE CATEGORY CHANGE WILL BE REFLECTED IN TWO
PRODUCTS DISSEMINATED BY THE NATIONAL CENTERS FOR
ENVIRONMENTAL PREDICTION /NCEP/:

1.  THE UV INDEX BULLETIN :   WMO HEADING    AWIPS ID
                             AEUS41 KWBC    UVICAC

AND

2.   THE WEB-BASED GRAPHIC AT /USE LOWER CASE LETTERS/:

WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/STRATOSPHERE/UV_INDEX/
UV_CURRENT_MAP.HTML

THE CURRENT UVI EXPOSURE CATEGORIES ARE:

         UVI                 EXPOSURE LEVEL

         0 1 2               MINIMAL
         3 4                 LOW
         5 6                 MODERATE
         7 8 9               HIGH
         10 AND GREATER      VERY HIGH


THE REVISED UVI EXPOSURE CATEGORIES...EFFECTIVE MAY 18 2004...
WILL BE:

         UVI                 EXPOSURE LEVEL

         0 1 2               LOW
         3 4 5               MODERATE
         6 7                 HIGH
         8 9 10              VERY HIGH
         11 AND GREATER      EXTREME

MORE INFORMATION ON THE UVI IS PROVIDED BY THE ENVIRONMENTAL
PROTECTION AGENCY ONLINE AT /USE LOWER CASE LETTERS/:

              http://www.epa.gov/sunwise

IF YOU HAVE ANY QUESTIONS ABOUT THIS CHANGE...YOU MAY CONTACT:

FOR SCIENCE AND TECHNICAL QUESTIONS:
    CRAIG LONG
    NCEP/CLIMATE PREDICTION CENTER
    CAMP SPRINGS  MD
    PHONE:   301-763-8000  EXT. 7557
    E-MAIL:  CRAIG.LONG@xxxxxxxx

FOR PROGRAMMATIC QUESTIONS:
    ANDREW NOEL
    NWS FIRE AND PUBLIC WEATHER SERVICES BRANCH
    SILVER SPRING  MD
    PHONE:  301-713-1867  EXT. 126
    E-MAIL: ANDREW.NOEL@xxxxxxxx

THIS AND OTHER SERVICE CHANGE NOTICES ARE AVAILABLE ONLINE AT
/USE LOWER CASE LETTERS/:

         http://www.nws.noaa.gov/om/notif.htm

$$
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