Friday, October 11, 2019

2019 wildfire season: wildfire activity in southern CA as red flag warnings continue

Red flag warnings and gusty Santa Ana winds continue in southern California today. As I write this red flag warnings are still in place. See the graphic from the NWS Los Angeles-Oxnard Weather Forecast Office for more information. To the south of Los Angeles, red flag warnings will continue in the San Diego area through 6 PM PDT, see the Red Flag Warning issued by the NWS San Diego Weather Forecast Office.

obtained from https://www.weather.gov/lox/ on October 11, 2019





National Weather Service San Diego CA
752 AM PDT Fri Oct 11 2019

 CAZ248-250-255>258-265-554-120100-
/O.CON.KSGX.FW.W.0001.000000T0000Z-191012T0100Z/
San Bernardino and Riverside County Valleys - The Inland Empire-
San Diego County Inland Valleys-San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest-San Gorgonio Pass Near Banning- Orange County Inland Areas-
752 AM PDT Fri Oct 11 2019

 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY...

 * Wind...Northeast to east winds 20 to 35 mph with gusts 50 to 60 mph. Isolated gusts to 70 in the northern Santa Ana Mountains and below the Cajon Pass this morning. * Humidity...Lowest daytime of 3 to 6 percent with poor overnight recovery tonight.

 * Timing...Strongest this morning. Weakening this afternoon.

 * Impacts...Current fires and any new fires may spread rapidly and exhibit extreme fire behavior. Active burning through the night due to gusty winds and extremely dry conditions. Outdoor burning is not recommended. The strong winds could blow around unsecured objects and make driving high profile vehicles more difficult. Areas of blowing sand and dust will be possible, which could lead to sudden visibility restrictions.

 * Outlook...Very low relative humidity will continue into Saturday, but with with weaker and less widespread winds near the coastal slopes of the mountains on Saturday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS... 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.


In an effort to know about wildfires that are going on today in southern California, I have been watching live stream of CBS2 in Los Angeles. I already knew about the Saddle Ridge Fire (started October 10th at 9 PM PDT) burning in northern Los Angeles County from an article Bill Gabbert posted on Wildfire Today today. Bill wrote that as of 9:30 AM PDT 4,700 acres have burned with zero containment. At least 25 houses have been destroyed and evacuations are in place. The Los Angeles Fire Department has a web page set up with information about road closures, mandatory evacuations and evacuation centers along with other information about the Saddle Ridge Fire that may be found here. In watching the live stream, I have seen that aircraft included one of the Erickson tankers and a large helicopter have been working the fire. One person has died.

According to the Los Angeles Fire Department, as of about 5:30 PM PDT on October 11, 2019, the Saddle Ridge Fire has burned 7,542 acres and is at 13 percent containment

In watching the live stream on CBS Los Angeles as well as checking out San Diego media I learned of the Sandlewood Fire (started on October 10th) near Calimesa that has destroyed 76 mobile hones and 1 person has died in that fire (see this LA Times article for more information). I learned about a wildfire in El Sereno that started around mid-day today, no other information is available about this fire. At the time that I was watching the live stream the fire was small, under five acres.


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