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NOUS41 KWBC 022028
PNSWSH
PUBLIC INFORMATION STATEMENT...SERVICE CHANGE NOTICE 01-16
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
425 PM EST MON APR 2 2001
TO: FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA WEATHER
WIRE SERVICE /NWWS/ SUBSCRIBERS...OTHER NATIONAL
WEATHER SERVICE /NWS/ CUSTOMERS AND PARTNERS...
NWS EMPLOYEES
FROM: ROBERT E. LIVEZEY
CHIEF...CLIMATE SERVICES DIVISION
SUBJECT: CHANGE IN DEFINITION OF D4 DROUGHT CATEGORY IN THE
WEEKLY DROUGHT MONITOR...EFFECTIVE THURSDAY MAY 3 2001
ON MAY 3 2001...THE D4 DROUGHT CATEGORY IN THE U.S. WEEKLY
DROUGHT MONITOR WILL BE REDEFINED TO INDICATE A 1 IN 50 YEAR
OCCURRENCE RATHER THAN THE CURRENT 1 IN 100 YEAR OCCURRENCE. THE
CHANGE IS BEING INSTITUTED BECAUSE AVAILABLE HISTORICAL DATA MAY
NOT BE SUFFICIENT TO ACCURATELY DELINEATE 1 IN 100 YEAR DROUGHTS.
THIS CHANGE AFFECTS THE FOLLOWING PRODUCTS:
TEXTUAL INFORMATION AVAILABLE ON AWIPS...NOAAPORT...FOS...AND
NWWS UNDER THE FOLLOWING HEADINGS:
PROGNOSTIC DISCUSSION:
WMO HEADING . . . . . . FXUS25 KWNC
PIL ID . . . . . . . . NMCPMDDRO
AWIPS ID . . . . . . . PMDDRO
GRAPHICAL INFORMATION AVAILABLE ON NOAAPORT AND AWIPS UNDER THE
FOLLOWING HEADINGS:
DROUGHT MONITOR MAP:
WMO HEADER . . . . . . PYIA88 KWNC
AWIPS ID . . . . . . . RBGDRO
FOR MORE INFORMATION...CONTACT:
DOUG LECOMTE...SENIOR METEOROLOGIST
NOAA/CLIMATE PREDICTION CENTER W/NP53
5200 AUTH RD
CAMP SPRINGS MD 20746-4304
PHONE: 301-763-8000 EXT 7567
THIS NOTICE AND OTHER SERVICE CHANGE NOTICES CAN BE FOUND ON THE
INTERNET AT /USE LOWER CASE/:
WWW.NWS.NOAA.GOV/OM/NOTIF.HTM
END
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