June 7, 2026 3:51 PM

Gusty Winds could Play a Role in a Semi to Overturn on I-15 in Fontana

FONTANA, CA. (Pain In The Pass) >> A Santa Ana Wind event was creating dangerous driving conditions across the Interstate 15 freeway, flipping a semi tractor-trailer and forcing a Sig-Alert.

According to the California Highway Patrol, the big rig flipped onto its side just around 9:42am January 9, 2026, on southbound I-15 just before the Sierra Avenue exit.

The semi landed on the #1 and #2 lane with a passing sedan into the center divider with damage to the car.

Santa Ana winds were gusting over 50 mph in north San Bernardino and Fontana area.

A Sig-Alert was issued at 10:15am for 3 of 4 lanes to move the semi to the shoulder of the freeway.

The semi driver involved walked away with only minor injuries.

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Cajon Pass
3:51 pm, Jun 7, 2026
temperature icon 77°F
clear sky
Humidity: 21 %
Pressure: 1006 mb
Wind: 16 mph
Wind Gust: 14 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 5:37 am
Sunset: 7:59 pm
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