Issued by the National Weather Service at 5:43 am CST on November 22, 2009
dense fog advisory in effect until 9 am CST this morning... Through 9 am...areas of fog, dense at times, will persist across portions of deep south Texas and lower Rio Grande Valley. The fog will reduce visibilities to 1 to 3 miles, with visibilities reduced to 1/2 mile or less in locally dense fog. Motorists are urged to slow down, and drive with extra caution in areas of dense fog.
Today
Sunny. Widespread dense fog in the morning. Visibility one quarter mile or less at times in the morning. Highs in the upper 70s. Light winds becoming east 10 to 15 mph in the late morning and afternoon.
Tonight
Partly cloudy in the evening then clearing. Areas of fog after midnight. Lows in the lower 60s. Southeast winds around 10 mph in the evening becoming light.
Monday
Sunny in the morning then becoming mostly cloudy. Areas of fog in the morning. Highs in the lower 80s. Southeast winds 10 to 15 mph.
Mostly cloudy. Slight chance of showers and thunderstorms in the evening...then chance of showers and thunderstorms after midnight. Areas of fog after midnight. Lows in the upper 60s. Southeast winds around 10 mph. Chance of rain 40 percent.
Tuesday
Chance of showers and thunderstorms in the morning... then showers and thunderstorms likely in the afternoon. Highs in the mid 70s. Southeast winds 10 to 15 mph shifting to the northeast early in the afternoon shifting to the north. Chance of rain 60 percent.
Tuesday Night
Mostly cloudy. Cooler. Slight chance of showers and thunderstorms. Lows in the upper 50s. Chance of rain 20 percent.
Wednesday
Mostly cloudy in the morning then becoming partly cloudy. Highs around 70.
Wednesday Night
Mostly clear. Lows in the lower 50s.
Thanksgiving Day
Sunny in the morning then becoming partly cloudy. Highs in the lower 70s.
Thursday Night and Friday
Mostly cloudy. Lows around 50. Highs in the lower 70s.
... Dense fog advisory in effect until 9 am CST this morning...
The National Weather Service in Brownsville has issued a dense fog advisory... which is in effect until 9 am CST this morning.
Widespread areas of dense fog will develop over all of deep south Texas and the adjacent Laguna Madre reducing visibilities to around one quarter of a mile. This dense fog is a result of the combination of light surface winds and high relative humidity values. The dense fog will persist through mid morning today with visibilities steadily improving due to increased heating and surface winds.
Precautionary/preparedness actions...
A dense fog advisory means visibilities will frequently be reduced to less than one quarter mile. If driving... slow down... use your headlights... and leave plenty of distance ahead of you. Drive with care... and watch for stopped school buses and children crossing the streets.
Listen to NOAA Weather Radio for the latest updates on this weather situation.
2009 Hurricane Coverage
Dense Fog Advisory