GBUAPCD Air Blog

Dust and smoke issues in the Great Basin Unified Air Pollution Control District

Marina Fire’s Smoke Data

Posted by admin on June 27, 2016

The District deployed a portable monitor in Lee Vining to assess the Marina Fire’s smoke impact to the community, as measured in fine particulate matter (PM2.5).  The smoke only got into the “marginal” air quality range the first night and early next morning, June 24th and 25th.  This is well below the 100 microgram per cubic meter level for a Stage 1 health advisory for smoke.  See http://www.gbuapcd.org/healthadvisory/pressrelease.htm for details on health advisory levels.  Updates on the Marina Fire are still available at http://inciweb.nwcg.gov/incident/4809/.  For current air quality conditions Click Here and then Generate Plots.Marina PM2.5

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Marina Fire by Lee Vining

Posted by admin on June 24, 2016

See InciWeb page: http://inciweb.nwcg.gov/incident/4809/

District staff are deploying portable particulate monitors to the communities of June Lake and, if possible, Lee Vining.  Details on the monitors’ data will be forthcoming.  Health advisory information can be found at the upper left corner of our home page: http://www.gbuapcd.org/.

Marina resize

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Saunders Pond burn March 24, 2016

Posted by admin on March 18, 2016

On April 24, 2016, LADWP did a prescribed burn of 28.5 acres of bulrush (tules) as part of a wildlife or game habitat improvement project.  Although the burn was approved by the Great Basin Unified Air Pollution Control District, smoke did not disperse as well as hoped.  The active firing burn lasted from 9:45 – 11:10. The smoke got good initial lift but, starting at about noon, a significant portion passed directly by the District’s webcams at Laws at ground level.  Videos may from these webcams be viewed at Laws South – 3/24/16 and Laws North 3/24/16.

Saunders Pond burn at 10:26 on February 24, 2016

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Rough Fire crosses boundaries

Posted by admin on August 17, 2015

This image, looking west, shows how the Rough Fire has spread, in the last few days, from the Sierra National Forest across three boundaries: the middle fork of the Kings River, the Tombstone Ridge (between the Sierra National Forest and the Sequoia and Kings Canyon National Park) and the into the Sequoia National Forest on the southern flank.  This 3-dimensional view illustrates the severe ruggedness of the terrain and the complexities of the multi-agency firefighting challenge.  A persistent high pressure system will continue to cause smoke from this fire to impact the Owens Valley for several days.

Rough Fire Perimeter 8-16-2015

Click on image to enlarge.

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Rough Fire grows

Posted by admin on August 4, 2015

The Rough Fire, 35 miles due  west of Independence at coordinates 36.87105, -118.90286, was mapped at only 65 acres yesterday but has apparently grown significantly today, as witnessed from this webcam image.  Smoke in the Owens Valley seemed more today than what should be coming from just the Cabin Fire and Willow Fire.  This new fire could very well be the cause.  Cloud cover is preventing confirmation from satellite imagery.  Details will be provided, when available, at our homepage, http://www.gbuapcd.org/, or possibly at the California Smoke Information page, http://californiasmokeinfo.blogspot.com/.

buck_rock_08-04-1313

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Cabin Fire – Aug. 2015

Posted by admin on August 4, 2015

The Cabin Fire in the Sequoia National Forest started on July 19, 2015, but didn’t significantly impact the East Side until it started to dramatically grow in late July and early August.  See links to the fire’s information at our home website, http://www.gbuapcd.org/.  Smoke production was heavier yesterday than today.  Southwest winds are predicted through Friday so smoke will continue to be driven into the Owens Valley but should decrease in intensity.jordan_peak_0803-1033jordan_peak_08-04-1043

 

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King Fire smoke turns and settles in

Posted by admin on September 19, 2014

Here is a view from our webcam on Mazourka Peak.  Overnight, the wind directions changed from southerly to northerly, causing the smoke from the King Fire in El Dorado County http://inciweb.nwcg.gov/incident/4108 to drift down into the Great Basin valleys.  The fire grew over 5,000 acres since yesterday and is expected to grow 10,000 more acres by tomorrow.  The winds will be shifting again, so it is uncertain whether there will be an increase is smoke to our area over the weekend.  Below that is a chart of the PM2.5 for monitors in Lee Vining, Devil’s Postpile and Bishop Paiute Tribe.  PM10 monitors in Mammoth Lakes and Bishop have been added.  The PM2.5 at these sites would be slightly less, but they still provide a reasonable estimate.  The communities have dropped back down into the Moderate or even Good range.  (REFRESH THIS PAGE throughout the day today for updates on the chart).  Cautionary and health effect statements for the color-coded categories are available at http://www.gbuapcd.org/pm10.htm.  Newly available is a health guide for schools from the Oregon DEQ.  It uses the same color codes for wildfire smoke (see below).

owensnorth.2014.09.19.06.56[1]

 

King Fire smoke data

Wildfire smoke school guide

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June Fire

Posted by admin on September 17, 2014

Update September 18, 2014:  Information on the June Fire can now also be found at: http://inciweb.nwcg.gov/incident/4115.

IMG_2758

Photo taken from Oh Ridge by Guy Davis, Air Monitoring Technician II for the Great Basin Unified APCD, just after noon today.

For information on the June Fire which started yesterday afternoon, September 16, 2014, see this announcement: June Fire 0917 am.  Updates and additional photos are posted on https://www.facebook.com/inyonf.  The smoke appears to be going upslope and lofting over the immediate community.  Transport winds are predicted to be in the south to southwest range.  Communities downwind should only be mildly impacted by the smoke.

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Meadow Fire satellite images and Lee Vining monitor

Posted by admin on September 10, 2014

Current information on the Meadow Fire in Yosemite can be found at http://yubanet.com/CAFires/Meadow.php and now http://inciweb.nwcg.gov/incident/4104.  Below are satellite images of the smoke plumes on the first day and then days later.  The fire’s intensity has dropped off considerably and wind patterns are keeping most of the smoke on the west side of the Sierra crest.  This pattern will last through the weekend, but we can still expect some of the smoke to spill over into Mono County and northern Inyo County.

Meadow Fire MODIS Pics

Yosemite National Park deployed a PM2.5 monitor to Lee Vining and there was an existing USFS one at Devil’s Postpile.  Below is a chart of the hourly data from both sites, which will be updated frequently.  Cautionary and health effect statements for the color-coded categories are available at http://www.gbuapcd.org/pm10.htm.

Meadow Fire EBAM data

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Meadow Fire makes run in Yosemite

Posted by admin on September 8, 2014

The smoke seen in the photo below is from the Meadow Fire in Yosemite National Park.  The image was captured at 4:30 PM Sunday, September 7, 2014, from the north end of June Lake Loop.Meadow Fire 9-7-2014

Details about the fire can be found at http://yubanet.com/CAFires/Meadow.php and at http://www.californiasmokeinfo.blogspot.com.  About 2,600 acres burned overnight since its discovery at 12:30 PM on Sunday, September 7, 2014.  The smoke seen here dispersed mostly north and slightly east.

The smoke is forecast to disperse in the same pattern this afternoon, Monday, September 8, 2014, as seen in the smoke-dispersion model image below.  Concentrations of particulate matter are predicted to be well below Great Basin APCD’s threshold of 100 ug/m3 for a stage 1 health advisory (see http://www.gbuapcd.org/healthadvisory/pressrelease.htm).Meadow smoke Sep-8-2014 PM

On September 9, 2014, the winds are predicted to shift to being from the northwest.  An updated version of the model now shows the smoke staying mostly on the west side of the Sierra crest.  Below is the model’s worst predicted hour for the afternoon/evening.

Meadow smoke Sep-9-2014 PM

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