NWS Issues Cold Weather Advisory, Winter Storm Watch
1/18/25 – Don’t get a flood in your attic. The National Weather Service (NWS) has issued a cold weather advisory and a winter storm watch for the entire Houston region. Sub-freezing temperatures and extreme wind chills mixed with ice and snow are expected. The:
- Cold-weather advisory runs from 3 AM to 12 PM on January 19th.
- Winter-storm watch takes effect on Monday January 20, 2025 at 6PM and will last until Tuesday at the same time.
For more details on each, see below.
Cold Weather Advisory Details
WHAT: Very cold wind chills below 20 degrees are expected.
WHERE: Portions of south central and southeast Texas.
WHEN: From 3 AM to noon CST Sunday, January 19, 2025
IMPACTS: Wind chill values can lead to hypothermia with prolonged exposure.
PRECAUTIONS: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Winter Storm Watch Details.
WHEN: Monday evening through Tuesday afternoon
WHAT: Heavy mixed precipitation is possible with total snow and sleet accumulations up to 3 inches and locally higher amounts. Ice accumulations of up to one tenth of an inch possible for portions of south central and southeast Texas.
IMPACTS: Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes.
PRECAUTIONS:
- Be where you plan to be by 6:00 PM Monday for the duration of this winter storm event.
- Monitor the latest forecasts for updates on this situation. Delay all travel if possible.
- If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility.
- Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination.
- Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.
WHERE: Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery; Northern Liberty; Colorado; Austin; Waller; Inland Harris; Chambers; Wharton; Fort Bend; Inland Jackson; Inland Matagorda; Inland Brazoria; Inland Galveston; Southern Liberty; Coastal Harris; Coastal Jackson; Coastal Matagorda; Coastal Brazoria; Coastal Galveston; Matagorda Islands; Brazoria Islands; Galveston Island; Bolivar Peninsula.
What to Expect within Metro Area
Jeff Lindner, Harris County’s meteorologist provided this additional detail.
As a cold front moves through the area today, look for increasingly colder conditions into Sunday and next week. Expect a substantial drop in the temperatures tonight into Sunday.
The freezing line will make it down toward the north and western sides of the metro area Sunday morning. When combined with gusty northerly winds of 15-25mph, wind chills will fall into the 10’s and 20’s for much of the area.
A more significant freeze is likely Monday morning with lows into the 20’s for much of the area and into the low 20’s north of HWY 105. Expect similar lows on Tuesday morning. Coldest temps will be on Wednesday morning with possible ice/snow cover and clearing skies resulting in maximum cooling conditions.
The duration of sub-freezing temperatures will be critical. Much of the area looks to fall below freezing Monday early evening and not rise above freezing until Wednesday afternoon.
Even then, it may only be a few degrees above freezing for a few hours. We could potentially experience sub-freezing temps for 36-45 hours over much of the area – and possibly longer.
Monday AM Forecasted Low Temperatures:
- North of HWY 105: 22-26
- North of I-10: 25-29
- Houston metro (inside Beltway): 27-29
- Coastal Counties: 28-30
- Beaches/Galveston: 31-33
Tuesday AM Forecasted Low Temperatures:
- North of HWY 105: 22-26
- North of I-10: 26-30
- Houston metro (inside Beltway): 27-29
- Coastal Counties: 28-30
- Beaches/Galveston: 30-32
Wednesday AM Forecasted Low Temperatures:
- North of HWY 105: 17-20
- North of I-10: 18-21
- Houston metro (inside Beltway): 19-21
- Coastal Counties: 19-24
- Beaches/Galveston: 30-32
- Maximum preparations and precautions for sub-freezing conditions for many hours should be completed this weekend. Failure to complete proper precautions may result in significant damage to vegetation and infrastructure.
Winter Precipitation:
Once the cold air is in place on Monday, another front will move through. Expect snow along and north of I-10 with the potential for a mixture of freezing rain/sleet/snow south of I-10. Models suggest the storm may move across the area in bands, resulting in much higher precipitation totals locally. This scenario occurred in 2004, 2008 and 2009.
Snow accumulations of 1-3 inches (or more locally) are possible along and north of I-10. Expect lower amounts south of I-10.
There is a:
- 70-85% chance much of the area will see at least a tenth of an inch of snow.
- 35-50% chance the area south of I-10 will get ice.
We could still be dealing with travel issues into Thursday morning. Aviation will be heavily impacted. Snow will clog runways and de-icing of planes will likely be necessary.
Forecast Graphics
Monday AM Low Temps:

Tuesday AM Low Temps:

Wednesday AM Low Temps:

Probabilities of Snow and Freezing Rain:

Snow Accumulation through Tuesday 600am (additional accumulation is likely after 600am)

Ice Accumulation through Tuesday 600am (additional accumulation is likely after 600am)

Posted by Bob Rehak on 1/18/25 based on information from NOAA, NWS and Jeff Lindner
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