# Gibby Fire: 230-Acre Brush Fire Off Ortega Highway in South Orange County, 95% Contained

> The Gibby Fire is 90% contained at 230 acres as of the morning of September 5, 2026, with no injuries, no homes threatened, and all shelter-in-place orders lifted; a NASA VIIRS satellite hotspot detected September 5 is consistent with residual heat from the contained perimeter.

- Canonical: https://ocint.app/situation/gibby-fire-orange-2026-09-02
- Markdown: https://ocint.app/situation/gibby-fire-orange-2026-09-02.md
- JSON: https://ocint.app/api/situations/gibby-fire-orange-2026-09-02
- Status: active
- As of: 2026-09-08T07:04:17.933+00:00
- Started: 2026-09-02T00:00:00+00:00
- Cities: San Juan Capistrano
- Publisher: OCINT (https://ocint.app)

## Who / What / Where / When / Why

**Who:** OCFA (jurisdiction, incident command under IC Cheyne Maule) in unified command with Cal Fire, USFS, OCSD, OC Parks, and CHP.
**What:** Brush fire in chaparral terrain along the Ortega Highway corridor; 230 acres, 90% contained as of September 5 morning with no injuries or structures damaged.
**Where:** Ortega Highway (SR-74) at Gibby Road, unincorporated south Orange County near Rancho Mission Viejo and Caspers Wilderness Park, along the Orange–Riverside County line.
**When:** Ignited 3:02 p.m. September 2, 2026; forward progress stopped by approximately 8 p.m. the same evening; 90% containment reached by 8:28 a.m. September 5.
**Why:** Cause under investigation; fire burned in dense chaparral during a Cal Fire High Fire Danger advisory period with dry, warm conditions.

## Narrative

## Current Status

The Gibby Fire is **90% contained** at **230 acres** as of 8:28 a.m. September 5, 2026, according to [Cal Fire](https://www.fire.ca.gov/incidents/2026/9/2/gibby-fire). Forward progress was stopped the evening of September 2 and has not resumed. No injuries have been reported and no structures were threatened at any point. A NASA VIIRS satellite hotspot (0.37 MW FRP, nominal confidence) was detected at 10:34 UTC on September 5 within Orange County, consistent with residual heat along the contained perimeter rather than active spread.

## Fire History and Containment Progression

The fire ignited at **3:02 p.m. on September 2** at the intersection of Ortega Highway (SR-74) and Gibby Road in unincorporated south Orange County, within the Rancho Mission Viejo area near the Orange–Riverside County line. An initial smoke-column estimate of 450 acres was withdrawn; the fire was remapped at **216 acres** on the afternoon of September 2 and held at **230 acres** from September 3 onward. Containment rose from 0% late September 2 to 5% (September 3 morning), 53% (September 3 evening), 78% (September 4 morning), 88% (September 4 evening), and **90%** at 8:28 a.m. September 5.

## Protective Actions — All Lifted

Shelter-in-place orders covering Caspers Wilderness Park, Rancho Carrillo, and Riverside County zone RVC-2074 were lifted at approximately 8 p.m. on September 2, once forward progress was confirmed stopped. No evacuation orders or warnings were issued at any point. SR-74 was closed eastbound at Gateway and westbound at Grand (Lake Elsinore) but has since reopened per prior reporting.

## Unified Command

OCFA holds jurisdiction under a unified command that includes Cal Fire, USFS, OCSD, OC Parks, and CHP. Incident Commander Cheyne Maule has led the response. Cal Fire's High Fire Danger advisory remained active for both inland and coastal Orange County through at least September 4, reflecting continued dry, warm conditions across the region.

## Cause

The cause of ignition remains under investigation.

## What to Watch

- Final containment (100%) announcement from OCFA or Cal Fire
- Cause-of-ignition determination
- Status of Cal Fire High Fire Danger advisories

## Timeline

- **2026-09-02T00:00:00+00:00:** Gibby Fire reported near Ortega Highway; fire reaches an estimated 216 acres with no containment.
- **2026-09-02T15:25:00+00:00:** CHP logs SIG Alert on SR-74 near the Candy Store, reflecting road impacts along the Ortega Highway corridor coinciding with the fire.
- **2026-09-03T16:00:19+00:00:** Cal Fire issues High Fire Danger advisory for inland Orange County.
- **2026-09-04T00:00:19+00:00:** Cal Fire High Fire Danger advisories extended to cover both inland and coastal Orange County.
- **2026-09-05T10:34:00+00:00:** NASA VIIRS satellite detects a low-intensity hotspot (0.37 MW FRP, nominal confidence) within Orange County, consistent with residual heat along the Gibby Fire's contained perimeter.
- **2026-09-07T17:04:00Z:** Cal Fire raises containment to 95%; acreage holds at 230 and the cause remains under investigation.

## Primary sources

1. [Gibby Fire](https://www.fire.ca.gov/incidents/2026/9/2/gibby-fire/) (2026-09-08T05:03:24+00:00)
2. [FIRMS Hotspot — 300K](https://firms.modaps.eosdis.nasa.gov/map/) (2026-09-05T10:34:00+00:00)
3. [Fire Danger High — Coastal OC](https://www.ocfa.org/safety-programs/fire-danger/) (2026-09-04T16:00:20.528+00:00)
4. [ABC7: Gibby Fire updates: All Orange and Riverside County shelter-in-place orders lifted for brush fire in San Juan Capistrano](https://abc7.com/story/gibby-fire-updates-crews-battle-fast-moving-brush-san-juan-capistrano/19781679/) (2026-09-03T04:09:05+00:00)
5. [Voice of OC: OC Fire Authority Say Gibby Fire Stopped at 250 Acres, Ortega Highway Closed](https://voiceofoc.org/2026/09/gibby-fire-cuts-through-216-acres-of-south-oc-shuts-down-ortega-highway/) (2026-09-03T00:59:19+00:00)
6. [Cal Fire/OCFA verified: 230 acres, 90% contained Sep. 5](https://www.fire.ca.gov/incidents/2026/9/2/gibby-fire)

## Factoids

- **Ortega Highway Corridor** (unverified): State Route 74 (Ortega Highway) runs through the Santa Ana Mountains connecting San Juan Capistrano on the coast to Lake Elsinore inland. The corridor passes through dense chaparral and is subject to periodic closures during fire events.
- **Cal Fire High Fire Danger** (definition): Cal Fire's High Fire Danger designation indicates weather and fuel conditions significantly increase the likelihood of fire ignition and rapid spread. It is one step below a Red Flag Warning issued by the National Weather Service.
- **Chaparral Fire Behavior** (unverified): The Santa Ana Mountains contain dense chaparral, a fire-adapted shrubland that can produce rapid, intense fire spread — particularly during late summer when fuels are at peak dryness.
- **OCFA Jurisdiction** (definition): The Orange County Fire Authority (OCFA) serves 23 cities and all unincorporated areas of Orange County and routinely coordinates with Cal Fire on wildland-urban interface fires.
- **Cal Fire/OCFA verified: 230 acres, 90% contained Sep. 5** (source_doc) ([source](https://www.fire.ca.gov/incidents/2026/9/2/gibby-fire)): Cal Fire lists the Gibby Fire starting 3:02 p.m. Sep. 2, 2026 at Ortega Highway (SR-74) and Gibby Road in unincorporated south Orange County (Rancho Mission Viejo area, along the Orange–Riverside line), OCFA jurisdiction under unified command with Cal Fire, USFS, OCSD, OC Parks and CHP (IC Cheyne Maule). An initial 450-acre smoke-column estimate was withdrawn; the fire was remapped at 216 acres the afternoon of Sep. 2 and held at 230 acres from Sep. 3. Forward progress was stopped about 7:30–8:45 p.m. Sep. 2; containment rose from 0% late Sep. 2 to 5% Sep. 3 morning, 53% Sep. 3 evening, 78% Sep. 4 morning, 88% Sep. 4 evening and 90% at 8:28 a.m. Sep. 5. No injuries, no homes threatened, no evacuation orders; shelter-in-place for Caspers Wilderness Park, Rancho Carrillo and Riverside zone RVC-2074 lifted about 8 p.m. Sep. 2. SR-74 was closed eastbound at Gateway and westbound at Grand (Lake Elsinore). Cause under investigation. A CHP SIG Alert at the Candy Store was not confirmed by any primary source reviewed. (Cal Fire Sep. 5; OC Register Sep. 2–3; Voice of OC Sep. 2; ABC7 Sep. 2–3; KTLA; LAT.)
- **Containment 95% (Cal Fire, Sept. 7)** (source_doc) ([source](https://www.fire.ca.gov/incidents/2026/9/2/gibby-fire/)): Cal Fire's incident page, updated 10:03 a.m. Sept. 7, 2026, lists the Gibby Fire at 230 acres and 95% containment under OCFA jurisdiction, cause under investigation. Containment went from 90% on Sept. 5 to no change on Sept. 6 to 95% on Sept. 7. Cal Fire's last road note remains the Sept. 2 closure of Ortega Highway from Gateway to Grand in Riverside County; no reopening or cause determination had been published by Sept. 7.

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