This story will be updated as new information is released.
Snow will continue to accumulate Sunday night into the early hours of Monday morning. Drivers should use caution, as many roadways have not been cleared.
Officials have been warning about poor conditions on all roads, both highways and residential streets, urging people to stay home if possible.
If you have to travel at all, use extreme caution and go slowly.
Officials with the agency said they have started plowing operations following the snowfall, focusing first on "heavily traveled main lanes, bridges and overpasses."
With temperatures as cold as they have been, roads will see snowpack as well. Travel will become increasingly difficult as the snow accumulates.
Remember to download the WFAA app to check one of our dozens of local radars near you as well as the latest forecast, cameras and current conditions.
The wintry weather has caused hundreds of delays and cancelations at DFW and Love Field airports.
Airport officials are urging people to confirm their flight's status before attempting to get to the airport and use extreme caution in doing so if their flight has not been canceled.
A Winter Storm Warning is in effect for all of North Texas. All 254 counties in Texas were under the warning as of noon Sunday.
By the time Monday rolls around, around 3 to 8 inches of snow will potentially have fallen across North Texas.
RELATED: As temperatures drop, North Texas organizations urge public to remember the homeless, older adults
Photos: Wintry weather across North Texas
Power issues
Officials are urging Texans to conserve electricity as the grid faces unprecedented demand from the extreme cold and a lower-than-normal electrical generation due to frozen turbines and lower natural gas supplies.
Flight delays
There have already been hundreds of flights canceled in the D-FW area.
Check for delays and cancellations:
Vaccine clinics
Vaccine clinics are closing or rescheduling due to the weather.
- Fair Park in Dallas will be closed due to weather from Saturday, Feb. 13 through Tuesday, Feb. 16.
- The COVID-19 vaccine clinics at Parkland Memorial Hospital and the outpatient clinic will be closed on Sunday, Feb. 14, and Monday, Feb. 15.
- Parkland patients with appointments Sunday can go to Parkland hospital until 5 p.m. Saturday for their vaccination. All other patients will be contacted by Parkland to reschedule their vaccination appointment in the upcoming days.
RELATED: How next week's wintry weather is impacting COVID-19 vaccination efforts across North Texas
DART
Dallas Area Rapid Transit is implementing severe winter operation plans starting on Sunday at 9 p.m. through 11:59 p.m. on Wednesday.
The transit service is moving to Operating Scenario 2, which means all rail operations will be suspended and DART bus routes will operate on normal Saturday schedules for the first few days of the week, with limited service scheduled on routes 63 and 362.
The Dallas Streetcar will not operate during this time, but a shuttle bus will be available between EBJ Union Station and the Bishop Arts District, making all stops. The transit service is also now providing 14 additional shuttle bus routes, which can be viewed here.
Government closures
Cedar Hill
All non-essential City of Cedar Hill facilities will be closed Monday, Feb. 15.
Dallas County
All Dallas County offices and courts will be closed Monday and Tuesday due to inclement weather.
Denton
All city facilities will be closed Monday due to the weather, according to a spokesperson. First responders will remain on duty and inclement weather stations will be open.
DeSoto
In the City of DeSoto, City Hall, the public library, and recreation center will all be closed. Waste collection will not happen on Monday.
Euless
Non-emergency city offices and facilities in the City of Euless will be closed on Monday, Feb. 15. Emergency services will remain in operation and Euless Public Works crews are sanding roads and monitoring for slick spots.
Farmers Branch
All city facilities will be closed Sunday and Monday, aside from first responders, officials said.
Fort Worth
A number of city services and facilities will be closed Monday due to the inclement weather. There will also be no solid waste collection. Check the full list of closures.
Grand Prairie
All Grand Prairie Parks, Arts & Recreation facilities will be closed Monday, Feb. 15.
Hurst
Non-essential city facilities will be closed Monday and trash pickup services have also been canceled. It should resume Tuesday.
Mesquite
The City of Mesquite has temporarily suspended all non-essential facilities on Monday, Feb. 15.
North Richland Hills
Non-emergency city offices and facilities will be closed on Monday, officials said. Garbage and recycling will not be collected on Monday either.
Plano
All libraries and public recreation centers in Plano will be closed Sunday.
Sachse
All City of Sachse facilities will be closed Monday, and city officials say they expect to reopen when conditions improve.
School closures
Arlington ISD
Arlington ISD will cancel in-person classes for Tuesday, Feb. 16 and instead go to virtual learning. Monday is an official holiday for students and staff.
Dallas ISD
All schools and offices at Dallas ISD will be closed Monday in observance of President's Day.
Duncanville ISD
Duncanville ISD students will not have class on Monday. It is a professional development day for educators to participate in virtual sessions.
Fort Worth ISD
Monday, Feb. 15, is a student holiday with most employees working remotely.
Tuesday, Feb. 16 will be all-virtual. All teachers and exempt staff will also work remotely.
Irving ISD
Monday is a student and staff holiday. Stay tuned with the district's social media pages for plans on Tuesday.
Lancaster ISD
Monday is a student holiday and staff development day.
Mansfield ISD
Monday is a scheduled holiday for students and staff.
Texas Christian University
Texas Christian University will hold remote, online learning only for Monday, Feb. 15, 2021.
Road closures
Multiple TEXpress lanes were closed Saturday night until further notice due to the severe weather, officials said.
The closures included:
- LBJ TEXpress - Segment 1 (35E elevated lanes) & US 75 SB. Segment 2 & 3 (depressed section) are open.
- NTE TEXpress Lanes closed
- NTE 35W TEXpress Lanes closed
Drivers can find information on road conditions throughout the state on DriveTexas.org or by calling 800-452-9292.
Related: Check the radar for your area