Simi Fire
Part of the2003 California wildfires
The Simi Fire burns in Southern California's Simi Hills, viewed from aC-130air tanker.
Date(s)	October 25, 2003 (2003-10-25) – November 5, 2003 (2003-11-05) (12 days)
Location	Los Angeles County &Ventura County, California, United States
Statistics[1]
Burned area	108,204 acres (438 km2)
Impacts
Non-fatal injuries	21
Structures destroyed	37 residences 278 outbuildings
Damage	$10 million (2003 USD)

TheSimi Fire was a devastating 2003 wildfire that burned 108,204 acres (438 km²) of land in theSimi Hills and southeasternSimi Valley in easternVentura County and westernLos Angeles County, in theU.S. state ofCalifornia.^[1][2] The Simi Fire was one of multiple large, fast-moving, and destructive wildfires in Southern California in October 2003, in a fire siege that included theCedar,Old, andGrand Prix fires. The Simi Fire resulted in no fatalities but did cause 21 injuries. The cause of the fire remains unknown.^[3]

At its peak, the Simi Fire burned up to 10,000 acres an hour.^[4] It threatened the major foothill communities ofPorter Ranch andChatsworth after crossing from Ventura County into Los Angeles County.^[5] The fire threatened homes nearStevenson Ranch, though it burned none. It also forced the closure of theGolden State Freeway (Interstate 5) for more than 2.5 hours on October 29 as fire crews successfully worked to prevent it from jumping the freeway north ofCalifornia State Route 14, nearSanta Clarita.^[6] By the night of October 30, the Simi Fire was 40% contained. That number jumped to 85% by the night of October 31.^[7] The fire was declared 100% contained on November 1 when precipitation moved into the area and aided firefighters.^[8]

The governor of CaliforniaGray Davis declared a state of emergency in Ventura and Los Angeles counties as a result of the Simi Fire and others burning concurrently.^[9]

• 2003 California wildfires

• 2003 California wildfires
• 21st-century history of the United States Air Force
• October 2003 in the United States
• November 2003 in the United States
• Wildfires in Los Angeles County, California
• Wildfires in Ventura County, California
• History of Simi Valley, California
• Chatsworth, Los Angeles
• West Hills, Los Angeles
• Simi Hills
• 2003 in Los Angeles County, California

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