March 10, 2026 3:40 AM

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
3:40 am, Mar 10, 2026
temperature icon 47°F
clear sky
Humidity: 77 %
Pressure: 1014 mb
Wind: 10 mph
Wind Gust: 11 mph
Clouds: 8%
Visibility: 10 km
Sunrise: 7:06 am
Sunset: 6:52 pm
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35°/47°°F 0 mm 0% 6 mph 77% 1014 mb 0 mm/h
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53°/53°°F 0 mm 0% 5 mph 71% 1019 mb 0 mm/h
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52°/52°°F 0 mm 0% 3 mph 69% 1021 mb 0 mm/h
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51°/51°°F 0 mm 0% 3 mph 58% 1021 mb 0 mm/h