If driving, slow down, use your headlights, and leave plenty ofdistance ahead of you.
* WHAT...Visibility one quarter mile or less in dense fog.* WHERE...Brazos, Grimes, Houston, Madison, Montgomery, Polk,San Jacinto, Trinity, and Walker Counties.* WHEN...Until 9 AM CDT this morning.* IMPACTS...Hazardous driving conditions due to low visibility.