California's 2026 wildfire season

Overview

Ten days before Memorial Day, a sailor crashed his boat on Santa Rosa Island and fired a flare gun for help. The flare lit the brush. By May 25 the fire had burned roughly 14,520 acres on one of the Channel Islands and become the largest blaze ever recorded there.

On the mainland, the Sandy Fire above Simi Valley hit 2,000 acres at 22% containment, with evacuation orders or warnings covering about 13,500 homes. California has logged more than 28,000 acres burned statewide before June, with roughly 45,000 people under evacuation orders. Governor Gavin Newsom has surged more than 2,800 firefighting personnel into the field.

Why it matters

California's fire season opened weeks early on a record-setting note, and roughly 13,500 Simi Valley homes are now in the path.

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Key Indicators

14,520

Acres on Santa Rosa Island

Roughly a third of the island, the largest fire ever recorded on the Channel Islands.

~13,500

Simi Valley homes under orders or warnings

About 10,000 homes under orders plus another 3,500 under warnings around the Sandy Fire.

28,000+

Acres burned statewide in 2026 so far

California has tracked above-normal fire activity in both the north and south.

45,000

Californians under evacuation orders

Another 36,000 are under warnings as crews work multiple active incidents.

2,800+

CAL FIRE personnel deployed

Newsom announced the surge on May 22 as multiple fires grew at once.

22%

Sandy Fire containment on May 25

Crews work shifting winds in the hills above Simi Valley.

Voices

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People Involved

Gavin Newsom

Coordinating state response and personnel surge

Joe Tyler

Leading state response to multiple active fires

Organizations Involved

California Department of Forestry and Fire Protection (CAL FIRE)

State Agency

Lead state agency on 2026 fire response

California's state fire agency, responsible for wildfire protection on 31 million acres of state responsibility land.

Channel Islands National Park

Federal Land

Site of largest fire ever recorded on the islands

A National Park Service unit covering five islands off the Southern California coast, including Santa Rosa.

Ventura County Fire Department

County Fire Department

Incident command on the Sandy Fire

The Ventura County fire agency leading the Sandy Fire response above Simi Valley.

Timeline

6 events Latest: Yesterday

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May 2026
Memorial Day evacuations expand around Sandy Fire
Latest Escalation

Sandy Fire grew past 2,000 acres at 22% containment. About 10,000 homes were under orders and another 3,500 under warnings across Simi Valley, Bell Canyon, and Santa Susana. The Santa Rosa Island fire stood at 14,520 acres and remained closed to visitors.
Yesterday
Newsom surges 2,800+ personnel statewide
State Response

The governor's office announced expanded deployment as the Sandy, Bain, River, and Santa Rosa Island fires burned at once. More than 15,000 structures had been threatened statewide.
4 days ago
Santa Rosa Island fire confirmed largest in Channel Islands history
Milestone

The Santa Barbara Independent reported the blaze had set the record for the Channel Islands and was nearing 50% containment.
5 days ago
Santa Rosa fire passes one-third of island
Escalation

CNN and local outlets reported the fire had charred nearly a third of Santa Rosa Island's 53,760 acres. Six endangered plant species were under threat.
6 days ago
Sandy Fire breaks out above Simi Valley
Origin

Simi Valley police received a report of a tractor hitting a rock near the 2600 block of Rudolph Drive. Within hours the brush fire became the Sandy Fire and forced the first evacuation orders.
May 18th, 2026 • 10:17 AM
Sailor's flare ignites Santa Rosa Island
Origin

A 67-year-old sailor crashed his boat on the rocks and fired a flare gun for help. The flare set the brush on Santa Rosa Island alight. An aircraft reported smoke; NPS staff confirmed the fire and were evacuated.
May 15th, 2026

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

January 2025

Palisades and Eaton fires (January 2025)

Wind-driven fires tore through Pacific Palisades and Altadena, killing at least 29 people and destroying more than 16,000 structures. The fires hit during a Santa Ana event after eight months of near-zero rainfall in Los Angeles.

Then

Insured losses ran into the tens of billions, and the state expanded the FAIR Plan to keep coverage available in high-risk zones.

Now

Sacramento tightened defensible-space rules and accelerated utility grid-hardening mandates. Several insurers paused new policies in fire-exposed counties.

Why this matters now

The 2025 LA fires reset the baseline for what a single event can cost California. The Sandy Fire's footprint sits inside the same wildland-urban interface that produced those losses.

August-November 2020

August Complex (2020)

A lightning siege ignited dozens of fires across Northern California in mid-August 2020. They merged into the August Complex, which burned more than 1 million acres in Mendocino, Humboldt, Trinity, Tehama, Glenn, and Lake counties. It was the first single fire to cross the 1-million-acre line in modern California history.

Then

California burned a record 4.3 million acres in 2020. Fifteen people died in fires across the state that year.

Now

The season reset the upper bound for what a California fire year could look like and pushed CAL FIRE budget and staffing higher in every subsequent cycle.

Why this matters now

2020 showed how fast a season can escalate from above-normal early activity to record territory. Forecasters watch the same signal pattern in 2026.

October 2017

Tubbs Fire and the 2017 firestorm

A wind-driven fire that ignited near Calistoga jumped Highway 101 and burned through the Coffey Park neighborhood of Santa Rosa, the mainland city, not the island. The Tubbs Fire killed 22 people and destroyed about 5,600 structures in one night.

Then

California opened investigations into utility ignition that ultimately drove PG&E into bankruptcy in 2019.

Now

The 2017 fires drove the first major round of California utility grid-hardening rules, public safety power shutoffs, and AB 1054's wildfire fund.

Why this matters now

It is a reminder that the name 'Santa Rosa' has appeared in two very different California fire records less than a decade apart. The 2017 event also set the template for how a single wind-driven blaze can rewrite policy.