Potential for wildfires in California predicted to be high in November

It will remain high in southern California through December

wildfire potential November

The Predictive Services section at the National Interagency Fire Center has issued their Wildland Fire Potential Outlook for November through February. The data represents the cumulative forecasts of the ten Geographic Area Predictive Services Units and the National Predictive Services Unit.

If NIFC’s analysis is correct the only area with above average potential for wildfires during the four-month period is California in November and December. According to the prediction most of the forested or brush-covered lands in the state will have enhanced potential in November. That area will shrink in December to just the southern two-thirds of California.

Below:

  • An excerpt from the NIFC narrative report for the next several months;
  • More of NIFC’s monthly graphical outlooks;
  • NOAA’s three-month temperature and precipitation forecasts;
  • Drought Monitor;
  • Keetch-Byram Drought Index.

From NIFC:

“Entering the outlook period, most states will remain out of fire season in November. Exceptions to this will continue to be California, Colorado, and possibly Texas where drier than average conditions will continue. Expect periodic increases in fire potential and activity during wind events that not only bring strong winds but also drier air that lowers humidity levels to critical levels. The occurrence of such events should begin to diminish in frequency later in the month as the seasonal transition begins to end. Medium range data suggests that conditions across the Southeast will continue to show improvement as the frequency of moisture events continues to increase.”

wildfire potential December

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Idaho Public Television produces film, “Living with wildfire”

"Living with wildfire"
Screenshot from “Living with wildfire”. Photo by Kari Greer.

Idaho Public Television has produced a 27-minute film that examines the science of living with wildfire.

Here is the official description:

Wildfires have been a way of life in Idaho for millennia. But, recently they’ve become more severe. Fire seasons are starting sooner, fires are burning hotter and they’re lasting longer. That’s caught the attention of fire and climate experts from the University of Idaho. They warn that a warming climate is adding fuel to an already dangerous problem.

It explores many of the issues associated with inevitable fire, and features excellent videography, plus still images taken by and interviews with someone well known to those who frequent the pages of Wildfire Today, photographer Kari Greer.

Taking on the ‘woke’ call-out culture

Woke Culture Obama
Screen capture from the Guardian video below.

On October 14 I wrote about criticism and critiques, exploring how in the wildland fire world they can provide a very valuable learning experience or there can be cascading negative repercussions. The outcome depends on the venue in which it is presented as well as the social maturity, motivation, knowledge, and diplomacy of the person expressing their opinion.

That article was followed a few days later by spotlighting Theodore Roosevelt’s “Man in the Arena”.

When I heard about Former President Barack Obama speaking during a panel discussion on October 29 about the “call out culture”, I thought back to those two articles. Mr. Obama may have been referring to criticism related to social issues or politics, but the concept can also apply to discussions about firefighting and forest management — even to issues as meaningless as aggressively calling someone out for not using the most current version of firefighting jargon approved by the U.S. Forest Service, which I saw happen recently (but thankfully not on Wildfire Today).

Below is a transcript of portions of Mr. Obama’s discussion, and after that, a 2-minute video clip from the event:


“This idea of purity and you’re never compromised and you’re always politically woke and all that stuff — you should get over that quickly.

“The world is messy. There are ambiguities. People who do really good stuff have flaws. People who you are fighting may love their kids and, you know, share certain things with you.

“I do get a sense sometimes now among certain young people, and this is accelerated by social media, there is this sense sometimes of, the way of me making change is to be as judgmental as possible about other people and that’s enough.

“Like if I tweet or hashtag about how you didn’t do something right, or used the wrong verb, then I can sit back and feel pretty good about myself because: ‘Man, did you see how woke I was? I called you out.’

“That’s not activism. That’s not bringing about change. If all you’re doing is casting stones, you are probably not going to get that far.”

Elevated fire danger to continue on Friday in southern California

UPDATED at 7:38 a.m. PDT November 1, 2019

Hot Dry Windy Index wildfire
Hot Dry Windy Index for the Santa Clarita area, created October 31, 2019.

The weather in southern California will be dry and breezy on Friday and Saturday but not to the extreme levels seen earlier this week. There are no Red Flag Warnings, but in Santa Clarita where the Tick Fire occurred for example, the forecast calls for 10 to 14 mph northeast winds gusting at 16 to 29 off and on into Friday night. Through Saturday the relative humidity will remain below 10 percent during the day with no recovery at night.

The Hot-Dry-Windy Index will be above the 75th percentile on Friday and Saturday.

Friday morning the chart below was revised to add the red “Critical” area that was not in the version issued Thursday. That is where the Maria Fire started at 6:15 p.m. Thursday east of Ventura, California.

Elevated Fire wildfire Weather for November 1, 2019
Elevated and Critical Fire Weather for November 1, 2019.
Weather forecast fire wildfire Santa Clarita
Weather forecast for the Santa Clarita area for the 48-hour period beginning at 4 p.m. PDT October 31, 2019.

There are no Red Flag Warnings in the medium-range weather outlook for southern California, but it is supposed to be dry.

Can southern California wildfire conflagrations be stopped?

Thomas Fire southern California, December 9, 2017
Thomas Fire in southern California, December 9, 2017. Photo by Kari Greer for the USFS.

While the residents of southern California await the wind event that will start Tuesday night bringing winds gusting in some areas at 75 to 85 mph along with single-digit humidity, someone might wonder, can wildfire conflagrations that occur in southern California during extreme conditions be stopped?

That topic has been discussed for many decades but it can be instructive to know the thoughts of scientists who study wildland fire as a profession.

One of the pioneers in the scientific study of fire behavior was Clive M. Countryman, a U.S. Forest Service researcher who four years after the disastrous fires of 1970 addressed the issue in a 16-page paper, “Can Southern California Wildland Conflagrations Be Stopped?”. Mr. Countryman reported that he was not able to develop “a radically new concept of suppression”, deciding instead that the best prospect is to reduce fuel energy output.

Thirty years later Marty Alexander, a Canadian wildfire researcher, took a close look at Mr. Countryman’s findings, came to a similar conclusion, and summarized the issue in a 2004 paper.

Extreme fire weather results in more potential power shutoffs in California

Electricity could be shut off for millions of people

Red Flag Warnings October 29, 2019
Red Flag Warnings for extreme fire danger October 29, 2019. NWS.

Red Flag Warnings in northern and southern California include forecasts for very strong winds and single digit humidity that will make wildfires difficult or impossible to suppress until, 1) the weather changes, or 2) the fire runs out of fuel.

Conditions in the southern part of the state will be critical, especially in the greater Los Angeles area which should expect 30 to 55 mph winds gusting at 75 to 85 with humidity of 3 to 8 percent.

Below is the National Weather Service forecast for Santa Clarita, near last week’s Tick Fire north of Los Angeles: Tuesday night, winds 41 to 46 mph gusting out of the northeast at 61 to 68. The relative humidity will drop to the single digits by noon on Wednesday.

NWS forecast wind Santa Clarita, CA
NWS forecast for the Santa Clarita, CA area, beginning October 29, 2019. The wind barbs point to the direction the wind will be FROM.

Below is information about this weather event from Jim Cantore of The Weather Channel Tuesday morning:

red flag conditions southern california wind humidity
Jim Cantore, The Weather Channel.

The three large utility companies could potentially shut off the power to millions of people in California beginning Tuesday. The maps below were collected from the web sites of the power companies at 8:30 a.m. PDT October 29 and show areas that could potentially be affected by power shutoffs. The information could change.

areas risk power shutoffs SDG&E
San Diego Gas & Electric’s communities at risk of power shutoffs October 29, 2019. SDG&E.
areas risk power shutoffs SCE
Southern California Edison’s areas at risk of power shutoffs October 29, 2019. SCE.
Pacific Gas & Electric's areas risk power shutoffs
Pacific Gas & Electric’s areas at risk of power shutoffs October 29, 2019. PG&E.

(Red Flag Warnings can be modified throughout the day as NWS offices around the country update and revise their weather forecasts.)