Fire Update 8/9/21

As of August 8th, 2021, Yosemite has had 41 fires started by lightning and 11 human-caused fires for the 2021 calendar year. Fire management has taken on a mix of strategies to suppress, monitor, or maintain these fires throughout Yosemite's naturally fire-adapted ecosystem. On July 31st, lightning storms caused multiple fires, located primarily in the Mather District of Yosemite National Park, along Tioga Road from White Wolf to Aspen Valley, including the Hetch Hetchy area. These 10 fires were all grouped together under one incident name, the Mather Complex. Additional fires from this storm occurred South of Yosemite Valley and North of Glacier Point Road. All these fires are being monitored and have a low probability of spread with many natural barriers except for the Tiltill Fire which is being fully suppressed.

The 27 lightning fires not reported in this update have been suppressed, contained, or called natural outs. All fire management actions have adhered to Minimum Impact Suppression Techniques (MIST). This minimizes impacts in the wilderness while allowing the healthy ecological effects of natural fire. Firefighters are routinely monitoring fire behavior on the remaining fires and will continue to engage in management actions as warranted.

One additional fire was reported last night at 2300 near the Carlon Campground, just outside the Park entrance at Big Oak Flat. This 3 ac. fire was on USFS lands and is under investigation. Yosemite Fire Units assisted with the suppression of this fire. It is fully contained.

Smoke may be present in parts of Yosemite National Park due to other regional fires in California. Yosemite National Park is a fire-adapted ecosystem. The overall strategy for managing all wildland fires is to provide for the safety of employees and the public and protect and enhance natural and cultural resources.

Mather Complex
Location: Between Aspen Valley and Hetch Hetchy, west of White Wolf.
Number of Fires: 10
Discovery Date: July 31,2021 Size: From .10 to 1 acre.
Containment: Varies by Fire. Strategy: Confine and Contain/Suppression
Cause: Lightning

Tiltill
Location: North of Hetch Hetchy, Tiltill Valley.
Discovery Date: July 31. 2021 Size: 1,300 acres
Containment: 15% Strategy: Full Suppression
Cause: Lightning

County Line
Location: Near Yosemite Creek Campground Road. 8361 elevation.
Discovery Date: June 28th, 2021 Size: 224 acres
Containment: 100% Strategy: Confine and Contain
Cause: Lightning

Lukens
Location: West of Lukens Lake, North of Tioga Road. 8243 elevation.
Discovery Date: June 28, 2021 Size: 510 acres
Containment: 75% Strategy: Confine and Contain
Cause: Lightning

Stubblefield
Location: Northern end of Yosemite NP, 2000 feet from Pacific Crest Trail (mile marker 982), no threat to trail. 8000 elevation.
Discovery Date: June 28, 2021 Size: 2 acres
Containment: 0% Strategy: Monitor
Cause: Lightning

Half Moon
Location: West of Ten Lakes near Half Moon Meadow. 8256 elevation.
Discovery Date: June 28, 2021 Size: 5 acres
Containment: 0% Strategy: Monitor
Cause: Lightning

As of August 11, Yosemite has had 41 fires started by lightning and 11 human-caused fires for the 2021 calendar year. Fire management has taken on a mix of strategies to suppress, monitor, or contain these fires throughout Yosemite's fire-adapted ecosystems. All active fires are being monitored and have a low probability of spread with many natural barriers except for the Tiltill Fire which is being fully suppressed.

Fire management actions have adhered to Minimum Impact Suppression Techniques (MIST). This minimizes impacts in the wilderness while allowing the healthy ecological effects of natural fire. The overall strategy for managing all wildland fires is to provide for the safety of employees and the public and protect and enhance natural and cultural resources.

Smoke may be present in parts of Yosemite National Park due to other regional fires in California. Please see below for links to air quality and weather in Yosemite.

Tiltill
Location: North of Hetch Hetchy, Tiltill Valley
Discovery Date: July 31. 2021
Size: 1,610 acres
Containment: 45%
Strategy: Full Suppression
Cause: Lightning

County Line
Location: Near Yosemite Creek Campground Road. 8361 elevation
Discovery Date: June 28th, 2021
Size: 224 acres
Containment: 100%
Strategy: Confine and Contain
Cause: Lightning

Lukens
Location: West of Lukens Lake, North of Tioga Road. 8243 elevation
Discovery Date: June 28, 2021
Size: 510 acres
Containment: 85%
Strategy: Confine and Contain
Cause: Lightning

Air Quality: https://www.nps.gov/yose/learn/nature/aqmonitoring or https://www.airnow.gov or https://airnow.gov/fires

https://inciweb.nwcg.gov



Edited 1 time(s). Last edit at 08/11/2021 02:11PM by eeek.

Tiltill fire now 1705 acres, 73% contained.
Lukens Fire now 530 acres, 85% contained.

Two new fires:
- Grant near Grant lakes, 1/2-acre, lightning from 8/11
- Cold , spot, Cold Canyon near Glenn Aluin, lightning.

As of August 19th, Yosemite has had 43 fires started by lightning and 11 human-caused fires for the 2021 calendar year. The park is utilizing a mix of strategies to suppress, monitor, or contain these fires throughout Yosemite's fire-adapted ecosystems. Currently there are four active fires, and these have all been contained or in the process of being contained using control lines and natural barriers.

Fire management actions have adhered to Minimum Impact Suppression Techniques (MIST). This minimizes impacts in the wilderness while allowing the healthy ecological effects of natural fire. The overall strategy for managing all wildland fires is to provide for the safety of employees and the public and protect and enhance natural and cultural resources. Smoke may be present in parts of Yosemite National Park due to other regional fires in California. Please see below for links to air quality in Yosemite.

Tiltill
Location: North of Hetch Hetchy, Tiltill Valley.
Discovery Date: July 31. 2021 Size: 1,960 acres
Containment: 90% Strategy: Confine and Contain
Cause: Lightning

County Line
Location: Near Yosemite Creek Campground Road. 8361 elevation.
Discovery Date: June 28th, 2021 Size: 224 acres
Containment: 100% Strategy: Confine and Contain
Cause: Lightning

Lukens
Location: West of Lukens Lake, North of Tioga Road. 8243 elevation.
Discovery Date: June 28, 2021 Size: 867 acres
Containment: 100% Strategy: Confine and Contain
Cause: Lightning

Cold
Location: Three miles North of Glen Aulin, in Cold Canyon.
Discovery Date: August 14, 2021 Size: 6.6 acres
Containment: 10% Strategy: Confine and Contain
Cause: Lightning