Moderate Expected Likely Dense Fog Advisory Dense Fog Advisory issued December 12 at 10:51PM CST until December 13 at 9:00AM CST by NWS Houston/Galveston TX Dec 12, 10:51 PM → Dec 13, 9:00 AM WHAT: Visibility one quarter mile or less in dense fog. WHERE: Portions of south central and southeast Texas. WHEN: Until 9 AM CST Saturday. IMPACTS: Low visibility could make driving conditions hazardous. + Read More If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Updated: Dec 12, 11:21 PM Source: NWS Alert