Dense Fog Advisory in Place, Greatest Threat for Severe Tonight Moves West

A Dense Fog Advisory is in place until 11AM for metro San Antonio. But the latest from the National Weather Service shows the threat for the most severe weather tonight has moved to our west.

Area of Concern:

Areas along and west of the I-35 Corridor

Threats & Impacts:

Tornadoes:  A brief, isolated tornado is possible

Winds:  60-70 MPH gusts possible

Hail:  Quarter size hail

Rainfall:  Amounts generally under 1 inch, but isolated 2 inch amounts possible. Minor flooding is not expected, but ponding of water from brief heavy rain may create traffic hazards.

Expected Thunderstorm Timing:

Rio Grande/ Western Edwards Plateau: 12 AM-3 AM Wed (greatest severe weather potential)

Eastern Edwards Plateau/Hill Country: 3 AM-6 AM Wed

I-35 Corridor: 6 AM-10 AM Wed

East of I-35 and I-37: 10 AM - 1 PM Wed


A storm system moving across the Southern Plains will result in showers and thunderstorms along a cold front tonight. This line of thunderstorms is expected to develop across West Texas/the Rio Grande this evening and quickly move east tonight. Based on anticipated timing for the thunderstorm line, the Austin and San Antonio Wednesday morning commutes may be impacted.

Damaging winds and large hail are possible with the line, along with a brief tornado. The tornado threat may increase if isolated cells are able to develop ahead of the main thunderstorm line tonight. The severe weather threat is expected to decrease as the line moves eastward, with the greatest threat across Edwards and Val Verde counties tapering off as the line reaches the Coastal Plains. Brief heavy rainfall will also be possible during this time, but the speed of the system should keep overall flooding concerns low. Rain will quickly end from west to east behind the front Wednesday morning.

Additionally, strong and gusty non-thunderstorm winds will be possible across the region both ahead of and behind the front this evening/tonight and Wednesday with gusts up to 35 MPH possible.


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