Friday, November 30, 2007

Inciweb: Jack Wildland Fire - YNP - 330 acres - 15%

Jack Wildland Fire
Yosemite National Park

Jack Fire behavior 11.14.07

South aspect, north of the community of Wawona
Credit: NPS

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Summary

The Jack Fire started on Oct. 29 from lightning associated with thunderstorms moving over the Park. Jack is located on the north and south sides of Turner Ridge north of Wawona. It was originally placed under wildland fire use management for resource benefits and public safety. On Nov. 8, the fire spread outside the fire use management zone causing a change in strategy. At this point, management actions were taken to slow fire spread south toward Wawona. Crews are constructing control line in areas that will inhibit future fire spread if necessary. At a public meeting held in Wawona Monday fire managers explained to community members that the prevailing conditions, shorter daylight hours, cooler nights and elevated moisture levels in the vegetation, are conducive to managing the fire until the weather puts it out. The fires this year in Lake Tahoe and Southern California are a reminder that is important to use fire as an ecological restoration tool as well as to create defensible space around fire prone communities.

Basic Information

Incident Type Wildland Fire
Cause Lightning
Date of Origin 10/29/2007 at 1500 hrs.
Location 1.5 miles north of Wawona
Incident Commander Jeff Panetta

Current Situation

Total Personnel 46
Size 330 acres
Percent Contained 15%
Estimated Containment Date 12/15/2007 at hrs.
Fuels Involved

South half of the fire is in oak woodland, manzanita, and bear clover. This is the portion of the fire nearest Wawona. The North half of the fire is heavy ponderosa pine and mixed conifer.

Fire Behavior

Fire behavior today was moderate. Flame lengths were 1-3' in mixed conifer understory. Occasional single tree torching occured. Max rates of spread were 2 cns/hr.

Significant Events

Fire rolled out over the southern containment line and has become re-established near the community of Wawona. Fire is now within 0.5 miles of Wawona and additional resources have been ordered. Progress continues on the west flank where an indirect handline and blacklining operation are successfully securing the fire to the Wawona Road (Hwy 41).

Outlook

Planned Actions

If feasible, direct handline will begin on south (heel) of fire. If this tactic does not work, indirect handline with burnout will be deployed adjacent to the community of Wawona. Blacklining will continue on the west flank to bring fire to the Wawona road.

Projected Movement

12 hours: Fire should be heald to at least 0.25 miles north of Wawona. Fire will be within 0.1 miles of the Wawona Rd.

24 hours: Fire should be heald to at least 0.25 miles north of Wawona. Fire will be within 0.1 miles of the Wawona Rd.

48 hours: Fire should be heald to at least 0.25 miles north of Wawona. Fire will be within 0.1 miles of the Wawona Rd.

72 hours: Fire should be heald to at least 0.25 miles north of Wawona. Fire will be within 0.1 miles of the Wawona Rd.

Growth Potential

Medium

Terrain Difficulty

High

Containment Target

By 12/3/07

Remarks

Not available

Weather

Current Wind Conditions Not available
Current Temperature 46 degrees
Current Humidity 26 %

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****REMINDER**** Every fire has the ability to be catastrophic. The wildland fire management environment has profoundly changed. Growing numbers of communities, across the nation, are experiencing longer fire seasons; more frequent, bigger, and more severe, fires are a real threat. Be careful with all campfires and equipment.
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