April 6, 2026 10:41 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
10:41 pm, Apr 6, 2026
temperature icon 57°F
clear sky
Humidity: 54 %
Pressure: 1015 mb
Wind: 6 mph
Wind Gust: 8 mph
Clouds: 0%
Visibility: 10 km
Sunrise: 6:29 am
Sunset: 7:13 pm
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57°/57°°F 0 mm 0% 6 mph 54% 1015 mb 0 mm/h
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52°/54°°F 0 mm 0% 2 mph 52% 1014 mb 0 mm/h
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60°/60°°F 0 mm 0% 2 mph 35% 1015 mb 0 mm/h
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68°/68°°F 0 mm 0% 4 mph 23% 1014 mb 0 mm/h
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75°/75°°F 0 mm 0% 2 mph 22% 1012 mb 0 mm/h
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74°/74°°F 0 mm 0% 4 mph 26% 1011 mb 0 mm/h
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63°/63°°F 0 mm 0% 5 mph 41% 1013 mb 0 mm/h