SAN ANTONIO -

A mix of sleet, freezing rain and reported light snow hit the San Antonio area early Thursday morning, causing several unexpected traffic and school delays.  

A winter weather advisory was put into effect until 11 a.m. for San Antonio and surrounding areas due to the wintry mix.  

Icy road conditions brought traffic to a standstill in parts of the city and led to several accidents.

San Antonio police shut down the northbound lanes of Highway 281 at Thousand Oaks due to ice. Interstate 35 at Schwab Road was closed in both directions due to ice on a bridge and Loop 1604 at Interstate 10 on the Northwest Side was closed due to several minor crashes.

Further north, New Braunfels police closed I-35 in both directions at FM 1044 due to ice. The City of New Braunfels activated its Emergency Operations Center in order to address winter weather concerns.

A number of local school districts delayed the start of classes in response to the icy roads. The major districts that delayed classes were New Braunfels, Seguin, San Marcos and Comal ISDs. No San Antonio school districts or college campuses reported delays.

The wintry mix moved out of the area by 7:30 a.m., but was expected to return Friday morning during the overnight hours.

The National Weather Service predicts a slight chance of drizzle, freezing drizzle, and sleet before 11 a.m. Friday, then a slight chance of drizzle between 11 a.m. and 5 p.m.

The highs for Thursday and Friday is predicted to be around 40 with lows near the 30s both days.

Wintry mix snags traffic across SA

THE HARDEST IS ALONG LOOP 1604, ALONG THE NORTHSIDE OF THE CITY, AND RIGHT NOW OUR JENNA HILLER IS OUT WHERE THERE WAS A VEHICLE SPUN OUT ALONG LOOP 1604. NOW, IF YOU'RE GOING TO USE LOOP 1604 THIS MORNING, YOU MAY WANT TO STICK TO THE ACCESS ROAD, THE MAIN LANES AS YOU CAN SEE ARE VERY SLOW GOING. JENNA? YEAH, TRAFFIC IS MOVING PRETTY SLOW. AS YOU SAID, THERE WAS A VEHICLE THAT SLID OFF OF THE ROAD OUT HERE, LOOKS LIKE MAYBE IT WAS ONE OF THOSE THAT POLICE WEREN'T ABLE TO GET TO QUITE YET. SOMEONE IF COME ALONG AND PUSH THAT DRIVER. THEY CONTINUED ON THEIR WAY. YOU CAN SEE THE TRAFFIC MOVING PRETTY SLOWLY OUT HERE, AND THAT'S A GOOD THING BECAUSE THIS ICE WILL KIND OF SNEAK UP ON YOU, IT'S WED ROADS FOR THE MOST PART, ESPECIALLY NOW THAT THERE'S MORE TRAFFIC KEEPING THINGS WARMER, BREAKING UP THAT ICE, BUT THERE ARE STILL PATCHES WHERE THERE'S THAT HEAVIER SLEET THAT ACCUMULATED, OR JUST ICY PATCHES ON THE ROAD, WE'VE NOTICED THAT MORE SO ON THE SMALLER ROADS WHERE THEY CROSS OVER LOOP 1604, SOME OF THOSE AREAS WHERE YOU MIGHT TAKE A TURN AROUND, THOSE ARE TENDING TO HAVE A LOT MORE ICE. YOU WILL SLIDE A LOT MORE ON THOSE SPOTS VERSUS THE MAIN LANES OF LOOP 1604, BUT THAT'S ONLY IF YOU'RE GOING TO BE TRAVELING OUT IN THIS AREA, WE'VE GONE FROM BLANCO TO NACOGDOCHES, THE ENTIRE AREA, THERE'S ACCIDENTS EVERY MILE OR SO. YOU WANT TO AVOID THE AREA IF YOU CAN.

Katrina reports on wintry mix that fell on NW Side

WE HEARD FROM JENNA, SHE SAID THEY WERE SLIPPING AND SLIDING OVER THERE. LET'S CHECK IN NOW WITH KATRINA WEBBER, SHE'S AT I-10 AND HUEBNER. THE PEOPLE ARE WAKING UP TO A WINTRY SCENE. THERE HAS BEEN A DUSTING ON THE ROOFTOPS. SALT GRASS HAS WINTRY PRECIPITATION I'LL SAY ON THE ROOF. ALSO HERE ON THE GROUND, I'M NOT SURE WHAT TO CALL THIS. I HAVE SEEN EVERYTHING COMING OUT OF THE SKY, SNOW, SLEET, WHAT LOOKS LIKE HAIL. IF YOU ARE PLANNING ON MAYBE BUILDING A SNOWMAN, DOING SLEDDING, GET OUT SNOW FUN. GET IT. [CHUCKLING], TOO DUSTY. LIKE THE HOLLYWOOD SNOW. CAN'T DO MUCH WITH THIS. I THOUGHT ABOUT MAKING A SNOW ANGEL, I WOULD TEST THE WATERS AND DO WRITING IN THE SNOW. YOU CAN SEE IT IS SUPPOSED TO SAY "GMSA," BUT IT LOOK LIKE DIRT-MSA, NOT TOO GOOD FOR WRITING. IT IS PRETTY TO LOOK AT. THAT IS ABOUT IT OUT HERE. IT LOOKS LIKE SNOW, BUT I'M