This is link to a google map showing locations and links to the NCOWS posses in the state of Texas:
http://maps.google.com/maps/ms?msid=205748811025930296921.0004be0bf60b2b0360299&msa=0&ll=32.528289,-97.756348&spn=10.789886,26.784668 (http://maps.google.com/maps/ms?msid=205748811025930296921.0004be0bf60b2b0360299&msa=0&ll=32.528289,-97.756348&spn=10.789886,26.784668)