NOUS41 KWBC 311750
PNSWSH

SERVICE CHANGE NOTICE 09-42
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
150 PM EDT FRI JUL 31 2009

TO:       SUBSCRIBERS:
          -FAMILY OF SERVICES
          -NOAA WEATHER WIRE SERVICE
          -EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
          -NOAAPORT
          OTHER NWS PARTNERS...AND NWS EMPLOYEES

FROM:     ELI JACKS
          CHIEF...FIRE AND PUBLIC WEATHER SERVICES BRANCH

SUBJECT:  ADJUSTMENT OF CURRENT PUBLIC FORECAST ZONE
          BOUNDARIES IN WESTERN AND CENTRAL WYOMING FOR WFO
          RIVERTON WYOMING: EFFECTIVE OCTOBER 1 2009

EFFECTIVE THURSDAY OCTOBER 1 2009 AT 200 PM MOUNTAIN DAYLIGHT 
TIME /MDT/...2000 COORDINATED UNIVERSAL TIME /UTC/... THE NWS 
FORECAST OFFICE /WFO/ IN RIVERTON WYOMING /RIW/ WILL RECONFIGURE 
SIX PUBLIC FORECAST ZONE BOUNDARIES IN WESTERN AND CENTRAL 
WYOMING.

THE MAIN PURPOSE OF THESE CHANGES IS TO PROPERLY ALIGN WFO RIW 
PUBLIC FORECAST ZONES WITH THOSE OF WFO CHEYENNE WYOMING /CYS/.  
A SERVICE CHANGE NOTICE ANNOUNCING THE WFO CYS CHANGES IS 
AVAILABLE ONLINE AT /USE LOWERCASE/:
  
HTTP://WWW.WEATHER.GOV/OS/NOTIFICATION/SCN09-43CYS_PUB_ZONES.TXT

IN ADDITION TWO MINOR CHANGES WERE MADE TO BETTER ACCOUNT FOR 
TOPOGRAPHIC DIFFERENCES NEAR TOGWOTEE PASS AND SOUTH PASS.

THESE CHANGES ARE MINOR...DO NOT AFFECT ANY CLIMATE VERIFICATION 
POINTS AND DO NOT SIGNIFICANTLY AFFECT THE CLIMATOLOGY OF THE 
RECONFIGURED PUBLIC FORECAST ZONES.

THERE ARE NO CHANGES TO WORLD METEOROLOGICAL ORGANIZATION  
HEADINGS OR ADVANCED WEATHER INTERACTIVE PROCESSING SYSTEM  
IDENTIFIERS WITH THESE CHANGES. NO ACTION IS REQUIRED FOR 
CONTINUED RECEIPT OF PRODUCTS FROM RIW.

AN UPDATED ZONE MAP SHAPEFILE CONTAINING THE RECONFIGURED ZONES 
IS AVAILABLE ONLINE AT /USE LOWERCASE/:

  HTTP://WWW.WEATHER.GOV/GEODATA/CATALOG/WSOM/HTML/PUBZONE.HTM

RECONFIGURED PUBLIC ZONE BOUNDARIES FOR WFO RIW PARTNERS AND 
USERS AFFECT THE FOLLOWING ZONES IN WESTERN AND CENTRAL WYOMING:

  ZONE NAME                              UGC/Z/ZONE CODE 

  TETON AND GROS VENTRE RANGES                WYZ012
  WIND RIVER MOUNTAINS WEST                   WYZ014
  WIND RIVER MOUNTAINS EAST                   WYZ015
  GREEN MOUNTAINS AND RATTLESNAKE RANGE       WYZ019
  NATRONA COUNTY LOWER ELEVATIONS             WYZ020
  CASPER MOUNTAIN                             WYZ022

A GRAPHICAL DEPICTION OF THE RECONFIGURED WFO RIW PUBLIC 
FORECAST ZONES IS AVAILABLE ONLINE AT /USE LOWERCASE/:

HTTP://WWW.WEATHER.GOV/OS/NOTIFICATION/RESOURCES/RIW_ZONES.JPG

THE FOLLOWING KEY PRODUCTS ARE AFFECTED BY THIS CHANGE FOR WFO 
RIW PARTNERS AND USERS:

  PRODUCT NAME                           WMO HEADING    AWIPS ID

  PUBLIC ZONE FORECAST                   FPUS55 KRIW    ZFPRIW
  NON-PRECIPITATION ADVSY/WATCH/WARNING  WWUS75 KRIW    NPWRIW
  WINTER STORM ADVSY/WATCH/WARNING       WWUS45 KRIW    WSWRIW
  SPECIAL WEATHER STATEMENT              WWUS85 KRIW    SPSRIW
  SEVERE WEATHER STATEMENT               WWUS55 KRIW    SVSRIW
  SHORT-TERM FORECAST                    FPUS75 KRIW    NOWRIW
  FLOOD WARNING                          WGUS45 KRIW    FLWRIW
  FLOOD WATCH                            WGUS65 KRIW    FFARIW
  FLOOD STATEMENT                        WGUS85 KRIW    FLSRIW
 
WFO RIW PRODUCTS USED FOR TORNADO...SEVERE THUNDERSTORM...FLASH 
FLOOD WARNINGS AND NON-WEATHER RELATED EMERGENCY MESSAGES ARE 
UNCHANGED SINCE THOSE PRODUCTS USE THE COUNTY /C/ FORM OF THE 
UGC CODE.

IF YOU HAVE ANY QUESTIONS...PLEASE CONTACT:

  CHRIS JONES
  WARNING COORDINATION METEOROLOGIST
  NWS FORECAST OFFICE
  12744 WEST US HIGHWAY 26
  RIVERTON WYOMING 82501
  307-857-3898 X726

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

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

$$
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