SAN ANTONIO – It’s hard to believe that it’s been three years since the February 2021 winter storm. The week that followed Valentine’s Day will live in our minds for years to come.
Here’s a look back at the historical event that shattered records in San Antonio and across the state.
RECORDS SET
During the event, it felt like a different record was set every day. Here are a few of the numbers that jumped off the page:
- -8 degrees wind chill: On the morning of Feb. 15, San Antonio achieved its second coldest wind chill since records have been kept on this statistic (1947). According to the records, San Antonio saw a wind chill of -12 degrees in 1949. Overall, San Antonio has only seen sub-zero wind chills eight times since 1947. The Austin/San Antonio National Weather Service issued its first-ever Wind Chill Warning on Feb. 15.
- 107.5 hours at or below 33 degrees: Starting on Feb. 12 and continuing through early Feb. 17, San Antonio saw below-freezing temperatures. Amazingly, this came up 90 minutes short of the record of 109 hours below 33 degrees in January 1951. This is by far the latest in a season that San Antonio has had such a stretch.
- 4 separate calendar days with measurable snow: This is the first time in San Antonio’s history that we have received snow on four separate calendar days: Jan. 10 (0.2″), Feb. 14 (1.2″), Feb. 15 (2.5″), and Feb. 18 (2.5″). It should be noted that in 1951 we received 0.4″ on Jan. 29, a trace on Jan. 30, 0.5″ on Jan. 31, and 0.4″ on Feb. 14.
- 3rd snowiest winter of all time: In the winter of 1984-1985, we received 15.9″. In 1925-1926, San Antonio saw 7.4″, and this winter totaled up to 6.4″.
- 9-degree low temperature: On the morning of Feb. 15, San Antonio International Airport dipped to 9 degrees, which tied for the 8th coldest temperature of all time. This occurred as the snow was exiting the region and the skies were clearing.
| Rank | Temperature | Date |
| 1 | 0° | January 31, 1949 |
| 2 | 4° | February 12, 1899 |
| 3 | 5° | January 30, 1949 |
| 4 | 6° | December 23, 1989 |
| 5 | 6° | February 2, 1951 |
| 6 | 6° | February 13, 1899 |
| 7 | 6° | January 8, 1886 |
| 8 | 9° | February 15, 2021 |
- 5 record lows in one week: San Antonio set record lows Feb. 14, 15, 16, 19, and 20, with temperatures of 13, 9, 12, 19, and 26 degrees respectively.
- 7th coldest February of all time: February 2021 now ranks as the 7th coldest February since records have been kept (1885), thanks to the arctic outbreak. That’s with several days in the 70s and one in the 80s before and after the bitter-cold stretch.
- 11.2 inches of snow in Del Rio, most all-time: On Feb. 18, a second round of snow brought 11.2 inches to Del Rio. This is the largest all-time snowfall, beating the previous record of 8.7 inches on Jan. 12 and 13, 1985.
- Two ice events and two snow events: There’s no record for this stat, but San Antonio saw essentially four separate winter weather events over the course of a week: The first round of freezing rain was reported in Hill Country on Feb. 11. Freezing drizzle fell for much on the area on Feb. 14, followed by snow late on the 14 and into the 15. Another round of freezing rain fell on the morning of Feb. 17, with a final snowfall on Feb. 18. You can bet this won’t happen again anytime soon.
- Winter Storm Warnings statewide: For the first time, according to the National Weather Service, EVERY county in the state was under a Winter Storm Warning by Sunday, Feb. 14.
ERCOT Power Grid Failure
This is the part that made the winter storm of February 2021 truly devastating.
While we still would have seen car crashes and loss of agriculture from the cold, ice, and snow, ERCOT’s failure to keep the lights on created panic and can even be attributed to deaths due to hyperthermia, carbon monoxide poisoning, and lack of access to medical equipment.
‘Power Grid Failure: What Went Wrong,’ the collaboration between KSAT Explains and KSAT Investigates, examines the February storm and its aftermath. You can watch the special in the video player above on-demand.
LOOKING BACK: Pictures from that frigid week
If you’d like to submit your pictures from the February 2021 winter storm, you can do so on our KSAT Connect page.
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