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Extreme Cold Alert in Santa Cruz: Chains Mandatory and Route Restrictions Due to Heavy Snow

21/07/2026 03:50 - Actualidad

A Harsh Winter in Patagonia

The province of Santa Cruz, located in the deep south of Argentina in the vast region known as Patagonia, is experiencing a historic polar wave. According to the General Administration of Provincial Highways (AGVP) through its weather reports N° 40 and N° 041/2026, the arrival of the most severe cold air system of 2026 is expected.

The phenomenon, which intensifies from July 19, 2026, will bring weak to moderate snowfalls and a marked drop in temperature. Maximum temperatures will not exceed 0 °C (32 °F) in large areas of the western and central parts of the province, setting up the coldest period of the year.

Forecast: When the Heaviest Snow is Expected

Weather models anticipate that a low-pressure center moving across the Pacific Ocean will impact the Chilean coast between the night of Wednesday, July 22 and the early morning of Thursday, July 23. This will generate an influx of moist air that will increase precipitation.

  • Provincial Northwest: The most abundant accumulations are expected, especially in the towns of Los Antiguos and Perito Moreno between the morning and early afternoon of Thursday, July 23.
  • Southwest and Center-West: Light snowfalls over National Route N° 40 (Argentina's iconic highway that crosses the country from north to south), specifically on the stretch between the Coal Basin (Cuenca Carbonífera) and Tres Lagos.
  • Friday, July 24: Snow will gradually turn into rain along the Atlantic coast, with a slow recovery in temperatures.

This scenario favors the presence of intense and prolonged frost, as well as the formation of ice and frost on the roads, mainly during the night and early morning hours.

Road Conditions and Restrictions

The Provincial Road Safety Agency (APSV) reported restricted circulation on various stretches due to poor visibility and snow accumulation, based on the update issued on July 19, 2026:

Route Stretch Status and Conditions
Provincial N° 5 Güer Aike - La Esperanza Open to all vehicles from 08:00 hs.
National N° 40 La Esperanza - Río Turbio - 28 de Noviembre Open from 07:00 hs, exclusively for 4x4 vehicles.
National N° 40 La Esperanza - El Calafate (gateway to the famous Perito Moreno Glacier) Open from 07:00 hs, exclusively for 4x4 vehicles.
National N° 40 Tres Lagos - Cuenca Carbonífera Concentrates the greatest road difficulties due to snow accumulation.

Mandatory Snow Chains

Authorities reminded drivers that, according to Disposition 002/18, carrying snow chains is mandatory throughout the winter season to travel on national and provincial routes in Santa Cruz. The technical area of Provincial Highways conducts inspections to verify this essential requirement, which is vital to avoid skidding or collisions on frozen surfaces.

Provincial Highways Operation

Fortunately, the teams from the Gobernador Gregores Road District are working tirelessly with specialized machinery. They are currently clearing snow on the Brizic Climb and on the stretch between the La Guillermina Fixed Post and Gobernador Gregores. Additionally, salt is being distributed on the road surface to improve traction in the presence of ice.

Recommendations for Drivers

  • Take extreme precautions and reduce speed when facing ice, fog, or low visibility.
  • Check the status of the roads before traveling, as conditions can change rapidly.
  • Avoid unnecessary travel during the night and early morning (hours of maximum cooling).
  • Respect the instructions of Road Safety, Provincial Highways, and Civil Protection personnel.
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Alfredo S. Quiroga