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Update 8/19/21 - Thursday - 8:54 a.m. (time of initial writing)______________
Took a break yesterday from this thread, the unrelenting fire gloom-and-doom here has begun to take a bit of a toll.
This post is very long, but I think it will give an accurate view of what is being faced by a large part of the population here in northern California, not to mention most all of the western states.
Looking out my window this morning, the sky is filled with smoke, the sunlight is colored to a reddish yellow hue. At least there is no ashfall. At least not at the moment. Looks kind of like Armageddon. . .
Those of you east of the Continental Divide, with your rains and your greenery – give thanks.
Before posting a general update on the major fires actively burning in northern California (to list and describe the literally dozens of minor fires that are igniting here, every day - and mostly then being extinguished - is just too daunting a task to consider) there is a (currently) smallish worry that grows ever larger as each day goes by, that I will get to in a moment: the Jack-In-The-Box.
As I post the general information on each of the major fires, I will also post their "estimated" date of containment, which I believe to be overly optimistic at best. Particularly the estimate for the Dixie Fire.
As mentioned prior posts, "contained" does
not mean "extinguished", or "put out" it merely means that any given fire is surrounded by fire lines (a line or space cleared of vegetation that a fire - hopefully - will be unable to cross); the interior of such fires can, and often do, continue to burn. Giving them the potential to jump the fire lines, and again begin to spread, should conditions change.
For a brief example, the date the Dixie Fire is estimated to be "contained" is August 30. This date seems to me to be a completely fantasy, perhaps posted as some kind of public relations nonsense unrelated to reality. I say this hoping that I am wrong. I don’t think that I am. We shall see.
The Dixie continues to actively burn.
My last update on this fire was two days ago, August 17. As of the 17th, the Dixie had burned 604,511 acres. As of this morning, August 19, the Dixie has now burned 678,369 acres, an increase of 73,858 acres in only two days.
The entire area remains under a “Red Flag Warning” until 11:00 a.m. this morning. With likely further such warnings coming over the following days (as is usually the case for this time of year here) and weeks until our seasonal autumn rains begin – usually (hopefully!) late October or early November.
About the current Red Flag warning:
“* IMPACTS... Any active fires or new fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.”https://forecast.weather.gov/showsigwx.php?warnzone=CAZ068&warncounty=CAC063&firewxzone=CAZ268&local_place1=Chester%20CA&product1=Red+Flag+Warning&lat=40.3114&lon=-121.2274#.YR6DbN9lBIAI hope everyone is still with me so for, because now I get to the Jack-in-the-box clown that is due to pop out of the box within a few weeks and, (Likely? Perhaps?), be a total “game changer” to our current fire situation. That is, if this year’s fire game isn't already bad enough.
This is the daily-approaching worry that I mentioned above:
And that is the arrival of the annual Santa Ana/Diablo winds. I just said “Santa Ana” winds on my 2020 fire threads (mainly because I grew up in southern California, and also because it seems that these autumn winds were referred to as “Santa Ana” all over the state until fairly recently), however, Sandi corrected me to say that the winds in northern California should be called "Diablo Winds" (thank you, Sandi, I sincerely try to remain factually correct in all of my fire posts) to say that these winds, that blow every autumn - they are part of California’s "normal" weather cycle – are called “Santa Ana” (‘Ana’ is spelled with one ‘n’, not two) in the southern part of California, Diablo winds in the northern part of the state.
In any case, the cause of these winds is much the same, and the result of these winds are equally catastrophic should they be blowing at up to 60 mph - some references state up to 80 mph - over an active wildfire, or hot and active embers.
This is how they work:
To sum up: These winds
are coming. Always in the past (I have lived in this area for 40 years) the worst fires have always come in late October.
The Dixie fire is currently at 678,369 acres. This is around one-thousand square miles. The Dixie is
still very actively burning. Even when “contained” the interior of a fire can – and does – still smolder, if not actively burn in “islands” of unburned acreage, that the original fire, as it has passed through, somehow missed.
A single burned-and-down (or burned-and-still-standing) tree can smolder and retain embers hot enough to re-ignite a fire for many weeks. Should a dry wind then blow through them (think Diablo wind, as mentioned above) these damaged trees can again bloom to fire.
California’s forested area (I’m not talking about the brush below the trees, there is plenty of that, too) can contain up to 165 – 170 trees per acre, according to University of California at Davis and United States Forest Service research. Most of the area of the Dixie Fire is very heavily treed, particularly in the upper elevations around Lake Almanor and Lassen Volcanic National Park (the areas where the Dixie is still actively burning).
Do the math: 165 trees per acre x 678,369 acres already burned (with likely more acres to come) = 111,930,855 (that’s in millions) of trees that could burn again in the Dixie Fire area alone, should the Diablo hit them just right.
The Dixie Fire (and all of the other fires – both major and minor) – will not be fully extinguished until the area receives a “wetting rain” (firefighters do not have the time to totally extinguish every square foot of fire, as a wildfire constantly rushes forward at often miles-per-hour - they are instead heavily engaged in structure protection and rescue): “A widespread rain that over an extended period of time significantly reduces fire danger. One-tenth of an inch may be sufficient to reduce fire danger in grass fuel models. One half inch may be necessary for timber fuels under closed canopies.”
https://www.nwcg.gov/term/glossary/wetting-rain Much of the Dixie Fire is comprised of "timber fuels under closed canopies".
It is extremely unlikely that northern California will receive a “wetting rain” much before the end of October/early November. Another two months – or more - to go.
And, as stated above, California’s worst fires have
always and
historically come around the end of October, just before the annual rains arrive, when the mountains and hillsides and valleys are all at their driest, and their fuels (grass and trees and brush) are all at their most combustible.
As I write this, it is barely past the middle of August.
It is difficult to imagine how these fuels can get any drier than they already are.
And soon to come to northern California is the Diablo. . .
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FIRE UPDATES(fire info below is posted from yubanet.com/fires/, except where I have added additional information in brackets [ ])
THE DIXIE FIRE[As of this morning, the Dixie Fire appears to have burned through more than 50% of Lassen Volcanic National Park, and is still burning within the park, and on the outskirts of the park. The small town of Mineral, site of park headquarters, and slightly outside the park, has been evacuated. If the fire continues on its current path, it seems likely that the entirety of the park will be burned over]
Approximately 30,000 people under evacuation warning or evacuation orders
Size: 678,369 acres
35% contained
Estimate of containment: August 30, 2021
Dixie Fire West Zone: Fire continued to burn actively for most of the night due to lower humidity recoveries and the sustained winds. Persistent spotting continued to be an issue as well. Very low fuel moistures and terrain-driven winds also contributed to continued overnight fire growth.
Dixie Fire East Zone:The fire near Janesville is growing rapidly in the dry sage and grassland fuel and both West Zone and East Zone crews and equipment continue to respond. Downslope evening winds caused additional spotting and fire growth south of Beardsley-Grade Road. Additional resources from the West Zone have been shifted into the Genesee Valley as firefighters aggressively protect structures and conduct point protection. In the Dyer Mountain area, resources continue to secure and mop up the perimeter line. Direct line construction will continue in the area east of Westwood. The fire continues to be held on Fruit Growers Boulevard. All lines at Keddie Point and into the North Arm of Indian Valley are holding and will continue to be patrolled. Aircraft will be utilized today as weather and visibility allow.
CALDOR FIRE (currently about 40 miles south-east of Velda, according to the fire map)
Size: 65,474 acres
Percent contained: 0% [zero percent]
Estimate of Containment: August 31, 2021
Approx. 10,000 people under evacuation
August 19, 2021 at 9:20 AMNo aircraft on the fire at this time due to poor visibility.
August 19, 2021 at 6:56 AMCAL FIRE update: Fire growth was moderated overnight due to increased humidity. Spotting and rollout continued to be the main contributor to fire spread throughout the evening. Spot fires remain hidden for long durations due to dense timber stands and limited road access.
For the next operational period fire behavior will increase in the afternoon when the inversion layer lifts. Expect multiple new spot fires in the North and Northeast areas of the incident, causing potential fire growth. Red Flag Warning ends at 11:00 a.m.
MONUMENT FIRE, Shasta National Forest
Size: 135,714 acres
Estimate of Containment: September 1, 2021
Percent contained: 10%
Approx. 8,000 under evacuation orders
[The towns of Hayfork and Weaverville appear to remain threatened]
August 19, 2021 at 8:23 AMModerate fire behavior was observed overnight which enabled firefighters to make limited progress in suppression efforts. Fire activity was active on all flanks with uphill runs, torching and long-range spotting. Resources worked to hold and minimize spread on the southeastern portion of the fire. Multiple spots were located and are being suppressed.
Today, firefighters will continue to actively provide structure defense, construct direct and indirect fire line and mop-up operations.
Extreme drought, winds and receptive fuels have challenged containment efforts. Observed winds were lighter than predicted yesterday. Smoke from fires in the surrounding area is assisting firefighters in suppression actions by moderating fire behavior.
August 19, 2021 at 7:38 AMActive fire behavior with long-range spotting observed. Structures threatened with additional Evacuation Orders and Warnings issued and in effect. Electrical transmission and distribution lines have been damaged. Threats to critical power, water and communication infrastructure, Trinity River Watershed and recreational sites, private timberland and grazing allotments, historical/cultural sites, and critical wildlife habitat. Hayfork Lookout and associated communication infrastructure threatened. Highway 299 remains closed. There is a threat of the fire burning into the Trinity Alps Wilderness. Road, area and trail closures in effect. Unified Command: (North Zone) Alaska Type 1 Team (McDonald), & (South Zone) Cal Fire Team 5 (Parkes).
Other major fires currently burning in Northern California:
Antelope Fire – 59,127 acres
River Complex Fire – 53,009 acres
McCash Fire – 3,253 acres
McFarland Fire – 110,132 acres
As of last night, there is reportedly a new major fire burning in Southern California, near Lake Elsinor. I will be concentrating on Northern California fires in this thread, there are already too many of them.
Thanks, everyone, for reading this thread.
Anne