Copied from http://sysu1.wsicorp.com/unidata/intro.html on 20031014 by David
Ahijevych. ahijevyc@ucar.edu


      WSI NOWrad

      Reflectivity Mosaic

      WSI's NOWrad is the industry standard for high quality national and
regional mosaic radar imagery. Using all available tilt angles, plus additional
processing and a three-step quality control technique for suppressing false
echoes, meteorologists at WSI are able to merge conventional radar imagery and
NEXRAD reflectivity into a single, accurate NOWrad mosaic that upholds that
same standard of quality as NOWrad does today.

      Regional and national mosaics give broader coverage than a single site.
WSI seamlessly incorporates NEXRAD WSR-88D data into NOWrad as soon as WSR-88D
radar sites come on-line.

      NOWrad's automated and meteorologist-validated quality control filters out
false echoes, artifacts, and ground clutter.

      NOWrad uses overlapping radar sites to improve reliability and fill the
void of non-operational sites. NOWrad does not depend on any single radar site
for data to create the most complete and accurate mosaic radar imagery.

      With NOWrad, you have greater flexibility in selecting a center point and
base map.

      Mosaics are available in 5-minute (two levels of quality control) and
15-minute (three levels of quality control) updated intervals, and consist of
16 levels of data.

WSI Corporation 4 Federal Street Billerica, MA      1994 WSI Corporation.     
01821 Tel (508) 670-5107 Fax (508) 670-5100      All rights reserved.         
                                                 Printed in the U.S.A.        
                                                 5/94. WSI and NOWrad are     
                                                 registered trademarks of     
                                                 WSI Corporation.