This article has been updated.

Most San Antonians woke up to snow Thursday morning as the winter storm continued to strain critical services, though electricity had been restored to many residents who were without for days.

As of 6:10 a.m., major highway interchanges and ramps remained closed as well as Loop 410 across the North Side, Wurzbach Parkway, and downtown’s “Finesilver Curve” (where traffic on Interstate 35 South enters Interstate 10 West), according to the Texas Department of Transportation’s local Twitter account.

The San Antonio-Austin area was under a winter storm warning until at least 6 p.m. Thursday, according to the National Weather Service. Snow accumulations of 3 inches to 6 inches were forecast for west of I-10 and along and north of U.S. 90. Elsewhere, up to 3 inches of snow were possible across the area, with additional ice accumulation possible.

Although temperatures are expected to get into the 40s during the day Thursday, melting snow could freeze again Thursday night into Friday morning as below-freezing temperatures return.

Conditions are forecast to improve over the weekend, as even the expected lows shift back to above-freezing temperatures beginning Saturday. San Antonians are expected to see highs in the 70s next week.

Since Sunday night, Texans across the state have experienced severe power outages leaving millions without electricity and burst water pipes flooding hundreds of homes. But as of 8:30 a.m. Thursday, the number of CPS Energy customers without power had declined to less than 10,000, according to the utility’s outage map.

Texans have been warned to continue to conserve electricity where possible and to boil their water before drinking it as supplies across the state start to dwindle. San Antonians were warned to boil water Wednesday afternoon.

Several warming centers were open to aid those struggling, including one managed by the City at the Henry B. González Convention Center that can shelter hundreds. Others have much more limited capacities and resources.

LocationAddressPhone number
Henry B. González Convention Center900 E. Market St.311
Losoya Middle School (9 a.m.-9 p.m.)1610 Martinez Losoya Road210-626-2333
Our Lady of Angels Catholic Church (no restroom access)1214 Stonewall St.210-924-6591
Our Lady of Guadalupe Helotes13715 Riggs Road, Helotes210-695-8791
Sacred Heart Catholic Church (open overnight if needed)2114 W. Houston St.210-227-5059
St. Patrick Catholic Church1114 Willow St.210-226-5223
Bexar County Fire Marshal’s Office9810 Southton Road210-335-0300

Transportation Closures

The Texas Department of Transportation was still reminding San Antonio residents to remain off roads if possible.

“Some highways are open, however, there are still some closed due to ice,” TxDOT San Antonio said in a tweet around 3 p.m. Wednesday. “Stay home if you can. If you must travel, use extreme caution.”

For the latest on nearby road conditions, click here.

VIA service will remain suspended on Thursday as road conditions continue to make it unsafe to deliver regular service, VIA said. VIA is expected to resume bus, van, and VIA link service at 10 a.m. Friday if the weather improves.

The San Antonio International Airport closed its airfield Thursday afternoon due to weather conditions.

General weather / cold / snow stock photos at the airport, around San Antonio, on February 17, 2021.
Patches of snow are still visible on the ground Wednesday afternoon at the San Antonio International Airport. Credit: Bonnie Arbittier / San Antonio Report

“We are aware that airports are being affected all over – it’s not just the San Antonio airport,” spokeswoman Tonya Hope said Wednesday. “Travelers are trying to get home and get out for wherever they’re going. Weather conditions … have worked in our favor to get the airfield open today.”

Officials urge travelers to check with the airlines for the most up-to-date flight arrivals and departures.

In the days leading up to unprecedented snow and ice storms, about 2,000 passengers a day traveled through the San Antonio airport, about 35% to 40% less than the same month in 2020 before the coronavirus pandemic forced a precipitous decline in air travel.

COVID-19 vaccinations and testing

COVID-19 vaccination appointments scheduled through the City of San Antonio at the Alamodome for Thursday have been rescheduled for the same appointment time on Monday due to the weather, City officials said. Appointments originally scheduled for Monday, Feb. 15, have been rescheduled for Friday, appointments set for Tuesday, Feb. 16 have been moved to Saturday, and appointments made for Wednesday, Feb. 17 have been moved to Sunday.

Due to the weather, the University Health system did not receive the vaccine shipment it was expecting Wednesday, and the Wonderland of the Americas mall COVID-19 vaccine site will be closed Thursday. All Feb. 18 appointments will be rescheduled for Monday, Feb. 22, at the same time, provided UH receives vaccine, spokeswoman Elizabeth Allen said.

Residents with UHS vaccine appointments for Friday, Feb. 19, should check vaccine availability before coming to Wonderland. UH will continue to post updates to and social media.

Both WellMed vaccination clinics in San Antonio will remain closed through the end of the week, WellMed announced. Patients scheduled to receive their second COVID-19 vaccinations this week at these clinics should return next week to their assigned location on the same day of the week to receive their shot. For example, if you had been scheduled to receive your shot at 10 a.m. Wednesday at the Alicia Trevino Lopez One-Stop Center, you will go to the Lopez center at 10 a.m. on Feb. 24.

“Patients scheduled to return this week were to receive a second dose 28 days after their first shot,” WellMed said in a prepared statement, referring to the Moderna vaccine. “The Centers for Disease Control says the second dose may be administered up to 42 days after the initial dose for the two-shot regimen to remain effective.”

Several of the City’s coronavirus testing sites are closed because of the weather. To view updated testing hours and closures, click here.

Trash pickup

The Solid Waste Management Department has changed its pickup schedule. Weather permitting, Monday’s pickup was to take place Wednesday, Tuesday’s will be on Thursday, Thursday’s will be on Friday, and Friday’s will be on Saturday.

There will be no collection of green organics bins this week. The updated schedule applies to brown trash bins and blue recyclables bins only.

School closures

Most school districts have been closed this week due to the icy weather and plan to make up the days later in the year. Here’s an updated list of school closures:

DistrictIn-person learningRemote learning
Alamo HeightsClosed Thursday and FridayNo
East CentralClosed Thursday and FridayNo
EdgewoodClosed Thursday and FridayNo
Fort Sam HoustonClosed Thursday and FridayNo
HarlandaleClosed Thursday and FridayNo
JudsonClosed Thursday and FridayNo
LacklandClosed Thursday and FridayNo
Medina ValleyClosed Thursday and FridayNo
North EastClosed Thursday and FridayNo
NorthsideClosed Thursday and FridayNo
San AntonioClosed Thursday and FridayNo
Schertz-Cibolo-Universal CityClosed Thursday and FridayNo
South San AntonioClosed Thursday and FridayNo
SouthwestClosed Thursday and FridayNo
SouthsideClosed ThursdayNo

Trinity University will keep its campus closed Thursday.

The University of Texas at San Antonio and Texas A&M University-San Antonio will be closed through Friday night but plan to reopen their campuses Saturday. Our Lady of the Lake University, University of the Incarnate Word, and San Antonio College will remain closed through Friday.

Senior reporters Iris Dimmick and Shari Biediger contributed to this article.

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Lindsey Carnett

Lindsey Carnett covers the environment, science and utilities for the San Antonio Report.