Hurst Fire

past fire

Wildfire

ACRES BURNED

799

STATE

California

ORIGIN COUNTY

Los Angeles

containment

100%

Active Hotspots
Active Hotspots are heat signatures detected by NASA satellites.

Snapshots happen 3-4 times per day.
Some heat may be non-wildfire.

Active Hotspots (0)

off

Recent Hotspots (0)

off

Fire perimeters are not realtime.

34.32533, -118.478134

2025-01-07

TIMELINE

9 days

January 7

Detected

January 17

LAST UPDATED

Wind Dynamics

first 2 will be pulled from the fire automatically.

Can have dynamic values. Ie > Higher wind value raises directional randomness value.

Wind Speed

Controls the velocity of particle movement, simulating how wind speed affects ember and heat plume transport.

11mph

Wind Direction

The prevailing direction of the wind as provided by the closest NWS weather station, expressed in degrees.

N(0)E(90)S(180)W(270) 0degrees

Directional Randomness

Simulates turbulence and local wind variations by adding random fluctuations to particle trajectories, similar to fire-induced wind eddies.

12%

Particle Dynamics

Can also have dynamic values. Ie > Higher wind reduces scale decay. Or Higher acreage increases. More than 30 hotspots increases particle lifespan. Etc.

Particle Lifespan

Determines how long each heat visualization element persists, analogous to the duration of visible thermal signatures in infrared imagery.

30frames

Particle Density

Controls the concentration of visualization elements within each burst, similar to the density of detected thermal signatures in a given area.

20%

Particle Scale Decay

Determines how quickly particles diminish in size over their lifespan, representing the cooling and dissipation of thermal signatures.

60%

Particle Scale Variation

Controls the range of initial particle sizes, simulating the variation in intensity of thermal signatures across a detection area.

80%

Burst/Emitter Dynamics

(⛔️ Some of these aren't totally working.). Controls the detailed behavior of fire particle emission patterns.

Burst Frequency

Sets how often new groups of particles are emitted, simulating the pulsing nature of thermal plumes and intermittent fire behavior.

2per sec

Particles Per Burst

Determines the number of thermal signatures released in each emission event, representing the intensity of individual heat releases.

Burst Duration

Controls how long each emission event lasts, analogous to the duration of individual thermal pulses in fire behavior.

0.3sec

Gap Between Bursts

Sets the cooling or rest period between emission events, representing the cyclical nature of fire intensity fluctuations.

0.2sec

Burst Length Variation

Adds randomness to the duration of each burst, simulating the natural variability in fire behavior and thermal signature patterns.

50%

Incident Data

CAUSE

Description

Near Diamond Road, Sylmar

Response

Lead Protecting AGENCY

Los Angeles City Fire Department, United States Forest Service, Los Angeles Fire Department, Los Angles County Sheriff

PROPERTY OWNERSHIP

()

WEATHER

Nearby Air Quality

AQI

34.32533, -118.478134

* mph at * degs.

forecast

From the Web

External data is not official

Information pulled “from the web” is compiled from sources that include non-official data, and is not confirmed by a human reviewer.

1. Start Time & Info

- **Start Date/Time/Location**: The Hurst Fire ignited on Tuesday, January 7, 2025, at 10:25 p.m. near the I-210 Foothill Freeway and Yarnell Street in Sylmar, California[2][5]. - **Size and Containment**: As of the latest update, the fire has burned 855 acres and is 10% contained[2]. - **Growth and Rate of Spread**: The fire has been actively spreading, although firefighters have made progress in controlling its growth. They have held the fire north of the I-210 Foothill Freeway and established control lines up to Santa Clara Divide Road. Despite this, the fire remains a significant threat due to ongoing wind conditions[2][5]. - **Containment Efforts**: Unified Command involves the Angeles National Forest, Los Angeles County Fire Department, Los Angeles Fire Department, Los Angeles County Sheriff, and CAL FIRE. Federal assistance has been granted through FEMA's Fire Management Assistance Grant (FMAG) to support the response efforts[1][2].

2. Evacuations & Closures

**** Evacuations: - **Evacuation Orders and Warnings**: Specific evacuation zones are under mandatory orders and warnings. Residents can check the most up-to-date evacuation information using the Protect Genasys map[2][5]. - **Evacuation Shelters and Information**: While specific shelter locations are not detailed in the latest updates, residents are advised to follow evacuation orders and seek shelter as directed by local authorities. - **Estimated Number of People Impacted**: The fire initially threatened approximately 40,000 homes in and around San Fernando and Newhall, affecting a population of around 70,000[1]. **** Road Closures: - **Locations**: Specific road closures include areas around the fire perimeter to ensure firefighter safety and control. However, detailed road closure information is not provided in the latest updates. Residents are advised to avoid non-essential travel to allow firefighters room to work[2]. - **For more information, visit:** - [InciWeb Hurst Fire page]: https://inciweb.wildfire.gov/incident-publication/caanf-hurst-fire/hurst-fire-evening-update-01-09-2025 - [Angeles National Forest]: https://www.fs.usda.gov/angeles - [Los Angeles County Fire Department]: https://fire.lacounty.gov/

3. Current Impact

- **Injuries and Fatalities**: There is no specific information on fatalities or injuries directly attributed to the Hurst Fire in the latest updates. However, the broader context of wildfires in Los Angeles County has resulted in significant impacts and casualties[3]. - **Structures Impacted**: The fire has threatened numerous structures, but exact numbers of structures destroyed or damaged are not provided in the latest updates. Over 40,000 homes were initially under threat[1][2]. - **Power Outages**: While not specifically attributed to the Hurst Fire alone, power outages have been reported in the broader area due to the wildfires, with efforts by Caltrans to clear debris and handle traffic equipment power outages[4]. - **Notable Impacts**: The fire has significant implications for the community, with Governor Gavin Newsom declaring a state of emergency and deploying extensive resources to combat the fire[4].

4. Current Outlook

- **Containment Projections**: Despite some progress, the fire remains largely uncontained at 10%. Firefighters continue to strengthen control lines and apply dozer lines to minimize fire growth. Containment efforts are ongoing, but the fire's spread is still a concern due to wind conditions[2][5]. - **Weather and Wind Warnings**: A Red Flag Warning remains in effect until 6:00 p.m. on Thursday, with anticipated dangerous Santa Ana winds returning from Monday to Wednesday. This weather condition exacerbates the fire's spread and intensity[2][3][5].

5. Weather info

- **Cause**: The cause of the Hurst Fire is currently under investigation[2][5]. - **Weather and Climate**: The fire is being fueled by extreme fire weather conditions, including high winds and low humidity. The persistent offshore flow with periods of strong Santa Ana winds is a critical factor in the fire's spread and intensity. These weather conditions are typical of the region during this time of year and are exacerbated by broader climate trends[2][3][5].

Citations

['https://www.fema.gov/press-release/20250108/fema-fire-management-assistance-granted-hurst-fire', 'https://inciweb.wildfire.gov/incident-publication/caanf-hurst-fire/hurst-fire-evening-update-01-09-2025', 'https://www.foxnews.com/live-news/los-angeles-wildfires-palisades-eaton-hurst-active', 'https://www.gov.ca.gov/2025/01/08/more-than-7500-firefighting-emergency-personnel-deployed-to-fight-unprecedented-los-angeles-fires/', 'https://www.fire.ca.gov/incidents/2025/1/7/hurst-fire/updates/cbe852d5-fd86-401b-aa1f-869c0caeb9cf']