San Antonio, Texas – Visibility has dropped to one-quarter mile or less across parts of South-Central Texas early Friday, creating hazardous driving conditions on I-35 and I-37 until 9 a.m.
According to the National Weather Service in Austin/San Antonio, a Dense Fog Advisory remains in effect for the Coastal Plains and Rio Grande Plains through 9 a.m. CST. Visibilities near or below 1/4 mile are occurring at times, especially along and southeast of San Antonio toward Pleasanton and Cuero.
Drivers may not see brake lights until it is too late.
Travel along I-35 from San Antonio to New Braunfels and on US-90 west toward Del Rio may be impacted during the morning commute. Sudden drops in visibility are possible, particularly on bridges and low-lying stretches of highway. Patchy dense fog could also affect portions of US-281 and Loop 1604.
Conditions should gradually improve after 9 a.m. as daytime heating lifts the fog. Afternoon highs will range from the mid-60s north of Austin to the low and mid-80s near Eagle Pass and Del Rio as a backdoor cold front nudges in from the northeast.
What residents should do now: Slow down, increase following distance, use low-beam headlights, and consider delaying travel until visibility improves.
Fog will dissipate by mid-morning Friday, with dry and warmer weather continuing into Saturday. No additional advisories are in effect after 9 a.m., but cooler mornings are expected Sunday into early next week.
