NOUS41 KWBC 271453
PNSWSH
SERVICE CHANGE NOTICE 08-54
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1053 AM EDT WED AUG 27 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: NEW FLOOD INUNDATION MAPS IN TEXAS AND LOUISIANA:
EFFECTIVE TUESDAY SEPTEMBER 30 2008
EFFECTIVE TUESDAY SEPTEMBER 30 2008 THE NWS AND THE NATIONAL
OCEAN SERVICE COASTAL SERVICES CENTER WILL BE ADDING NEW FLOOD
INUNDATION MAPS TO THE ADVANCED HYDROLOGIC PREDICTION SERVICE
/AHPS/ WEB PORTAL. THESE MAPS WILL PROVIDE INFORMATION FOR
16 LOCATIONS IN TEXAS AND LOUISIANA. THESE MAPS ARE THE THIRD
SET RELEASED. THE FIRST SET OF MAPS WAS RELEASED IN OCTOBER 2007
FOR LOCATIONS IN EASTERN NORTH CAROLINA. THE SECOND SET OF MAPS
WAS RELEASED IN JUNE 2008 AND COVERED FOUR LOCATIONS IN
SOUTHEAST TEXAS.
FLOOD INUNDATION MAPS WILL BE AVAILABLE FOR THE FOLLOWING
LOCATIONS:
CLEAR CREEK NEAR SANGER TX
CLEAR FORK TRINITY RIVER AT FORT WORTH TX
COLORADO RIVER AT AUSTIN TX
COLORADO RIVER AT BASTROP TX
COLORADO RIVER AT SMITHVILLE TX
EAST FORK SAN JACINTO RIVER NEAR NEW CANEY TX
ONION CREEK AT AUSTIN TX
OUACHITA RIVER AT MONROE LA
PALUXY RIVER AT GLEN ROSE TX
RED RIVER AT ALEXANDRIA LA
SABINE RIVER AT LOGANSPORT LA
SAN JACINTO RIVER NEAR SHELDON TX
SOUTH FORK SAN GABRIEL RIVER AT GEORGETOWN TX
SPRING CREEK NEAR SPRING TX
TRINITY RIVER AT DALLAS TX
WEST FORK TRINITY RIVER AT FORT WORTH TX
THE 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 FLOOD ON RECORD. 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.
USERS CAN ACCESS THESE FLOOD INUNDATION MAPS AND ASSOCIATED
GEOSPATIAL DATA /SHAPEFILES/ THROUGH THE AHPS WEB PORTAL
/USE LOWER CASE/:
WWW.WEATHER.GOV/AHPS/
A COMPLETE LIST OF FLOOD INUNDATION MAP LOCATIONS IS ONLINE AT
/USE LOWER CASE/:
WWW.WEATHER.GOV/AHPS/INUNDATION.PHP
A USERS GUIDE FOR THE FLOOD INUNDATION MAP WEB INTERFACE IS
AVAILABLE AT /USE LOWER CASE/:
WWW.WEATHER.GOV/AHPS/INUNDATION/INUNDATION_MAPPING_USER_GUIDE.PDF
IF YOU HAVE ANY QUESTIONS OR COMMENTS...PLEASE CONTACT:
VICTOR HOM