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PNSWSH

SERVICE CHANGE NOTICE 08-42...AMENDED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
140 PM EDT MON JUN 16 2008

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

FROM:    GLENN AUSTIN
         CHIEF...HYDROLOGIC SERVICES DIVISION

SUBJECT: AMENDED: NEW FLOOD INUNDATION MAPS FOR LOCATIONS 
         IN SOUTHEAST TEXAS REDUCED FROM FIVE TO FOUR: 
         EFFECTIVE FRIDAY JUNE 30 2008

NWS HAS CHANGED THE NUMBER OF SITES WHERE NEW FLOOD INUNDATION 
MAPS ARE BEING IMPLEMENTED IN TEXAS FROM FIVE TO FOUR. THE MAPS 
FOR HOUSTON - U.S. 59 ON THE GREENS BAYOU WILL NOT BE IMPLEMENTED 
AT THIS TIME.

NWS ANTICIPATES THE MAP FOR U.S. 59 ON THE GREENS BAYOU... ALONG 
WITH FLOOD INUNDATION MAPS FOR SEVERAL OTHER LOCATIONS IN THE 
GULF COAST REGION... WILL BE IMPLEMENTED BY OCTOBER 1 2008. NWS 
WILL ISSUE A DETAILED ANNOUNCEMENT ON OR BEFORE AUGUST 29 2008.

THE REMAINDER OF THE ORIGINAL NOTICE FOLLOWS:

EFFECTIVE FRIDAY JUNE 30 2008 THE NWS AND NATIONAL OCEAN SERVICE 
COASTAL SERVICES CENTER WILL ADD NEW FLOOD INUNDATION MAPS TO 
THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ WEB PORTAL FOR 
PORTIONS OF SOUTHEAST TEXAS. THESE MAPS WILL BE THE SECOND SET 
OF FLOOD INUNDATION MAPS IMPLEMENTED TO DATE. THE FIRST SET WAS 
RELEASED IN OCTOBER 2007 AND COVERED PARTS OF EASTERN NORTH 
CAROLINA.

FLOOD INUNDATION MAPS WILL BE AVAILABLE FOR THE FOLLOWING 
LOCATIONS IN SOUTHEAST TEXAS:

  HOUSTON - SHEPARD DRIVE: ON THE BUFFALO BAYOU
  PINEY POINT VILLAGE: ON THE BUFFALO BAYOU
  WESTFIELD: ON CYPRESS CREEK
  HOUSTON - U.S. 59: ON THE GREENS BAYOU
  HUMBLE: ON THE WEST FORK OF THE SAN JACINTO RIVER

INUNDATION MAPS PROVIDE INFORMATION ON THE SPATIAL EXTENT AND 
DEPTH OF FLOOD WATERS IN THE VICINITY OF NWS RIVER FORECAST 
LOCATIONS. USERS WILL BE ABLE TO DISPLAY FLOOD INUNDATION MAPS 
FOR VARIOUS LEVELS RANGING FROM MINOR FLOODING THROUGH THE 
LARGEST OBSERVED FLOOD. FLOOD INUNDATION MAPS...COMBINED WITH 
RIVER OBSERVATIONS AND NWS FORECASTS...ENHANCE THE COMMUNICATION 
OF FLOOD RISK AND PROVIDE USERS ADDITIONAL INFORMATION NEEDED TO 
BETTER MITIGATE THE IMPACTS OF FLOODING AND BUILD MORE RESILIENT 
COMMUNITIES.  

THESE FLOOD INUNDATION MAPS AND ASSOCIATED GEOSPATIAL DATA 
/SHAPEFILES/ CAN BE ACCESSED THROUGH THE AHPS WEB PORTAL  
/USE LOWER CASE LETTERS/:

HTTP://WWW.WEATHER.GOV/AHPS/

A COMPLETE LIST OF FLOOD INUNDATION MAP LOCATIONS IS ONLINE AT 
/USE LOWER CASE LETTERS/:

HTTP://WWW.WEATHER.GOV/AHPS/INUNDATION.PHP

A USERS GUIDE FOR THE FLOOD INUNDATION MAP WEB INTERFACE IS 
AVAILABLE AT /USE LOWER CASE LETTERS/:

 
WWW.WEATHER.GOV/AHPS/INUNDATION/INUNDATION_MAPPING_USER_GUIDE.PDF

IF YOU HAVE ANY QUESTIONS OR COMMENTS...PLEASE CONTACT:

  VICTOR HOM
  NATIONAL WEATHER SERVICE
  NATIONAL INUNDATION MAPPING PROGRAM LEADER 
  PHONE:  301-713-0006 EXT. 173 
  E-MAIL: VICTOR.HOM@NOAA.GOV

NWS SERVICE CHANGE NOTICES ARE ONLINE AT /USE LOWER CASE/:

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

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