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Last Map Update: Fri, Jan. 20, 2017 at 5:59:09 am CST

National Weather Service Austin/San Antonio, TXNational Weather Service Austin/San Antonio, TXNational Weather Service Houston/Galveston, TX
National Weather Service Austin/San Antonio, TXZoom

National Weather Service Brownsville/Rio Grande Valley, TXNational Weather Service Brownsville/Rio Grande Valley, TX

Areas of dense fog will continue over portions of South Texas as moist surface air and light winds allow for radiational cooling. Visibilities of 1/4 mile or less are expected over many locations, making driving hazardous. Slow down, use low beam headlights and allow for extra time to reach your destination this morning. Conditions should improve by 9 AM.
Areas of fog can be expected late tonight. Some locations may experience dense fog with visibilities dropping to 1/4 of a mile at times. Lows will be in the 50s.
A dry cold front will move across South Texas Saturday night. A cooler and much drier airmass will be behind the front, with windy conditions expected on Sunday. The dry air and low relative humidity will result in critical fire weather conditions on Sunday. As a result, a Fire Weather Watch is in effect for South Texas. See the graphicast for more details. Be careful with any outdoor activities on Sunday which could spark a fire!
A strong upper level low pressure system is expected to move across the Southern Plains and northern Texas Saturday night through early Sunday. In response, a frontal boundary will move across South Texas Saturday night. Much drier, windy and cooler conditions Sunday. Critical to Extreme Fire Weather conditions expected Sunday late morning through afternoon over South Texas. Gale force wind expected over the Bays and Coastal Waters Sunday. Brief Storm Force wind gusts may occur over the Offshore Coastal Waters Sunday Afternoon. Dry with weaker winds Monday. Warmer Tuesday with increasing onshore flow as another upper disturbance enters the Southern Plains from the west. Another cold front is expected Tuesday night into Wednesday bringing cooler temperatures to South Texas.

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