GBUAPCD Air Blog

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

Archive for the ‘Uncategorized’ Category

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

Posted in Uncategorized, Wildland Fires | Comments Off on Meadow Fire makes run in Yosemite

High pressure holding Soda Fire smoke on west side

Posted by admin on January 16, 2014

The Soda Fire in the Sequoia National Forest now has an Inciweb link: http://inciweb.nwcg.gov/incident/3765/.   Very little of the smoke is making it over to the Owens Valley.  A high pressure is holding most of it down on the west side of the Sierra crest, as can be seen from the Sierra webcams below.  This pattern is expected to hold for several days.

Find “Webcams” link at http://sierrafire.cr.usgs.gov/index.htmJordan Peak views

Map of webcam locations relative to the Soda FireSoda Fire Map

 

Posted in Uncategorized | Comments Off on High pressure holding Soda Fire smoke on west side

Poison & Bear Fires in Sierra National Forest

Posted by admin on August 7, 2012

The incident commanders reported that the Bear and Poison Fires near Bear Creek are still separated by a ridge.  They combine for about 170 acres, up from 35 acres yesterday, in dense fuels.  This fire would account more for the heavy concentration of smoke in the Round Valley and Crowley Basin areas than the Clear Fire reported in the previous blog post.  As yet, there is not a source of online updates for the fire, but that will be forthcoming.

Posted in Uncategorized | Comments Off on Poison & Bear Fires in Sierra National Forest

Clear Fire’s smoke path

Posted by admin on August 7, 2012

Yesterday, primarily in  the afternoon, the Clear Fire burned another 500 acres or more to reach a total size of 1800 acres.

Below was the predicted travel path for smoke originating from the fire at 3PM and 4PM yesterday.  This appears to have been pretty accurate, as the smoke seemed to arrive overnight and looked fairly dense over southeastern Mono County this morning (as observed from Bishop).  The Bishop Paiute Tribe’s PM2.5 monitor recorded 23 ug/m3, about three times the annual average, but still below the 24-hour limit of 35.

Posted in Uncategorized | Comments Off on Clear Fire’s smoke path