Awatchfire

Los Angeles County, California

Lac-343044 Fire

Burning 2.6 miles east of Walnut and 3.0 miles west of Pomona, since Wednesday 23 September.

Map of California. The Lac-343044 Fire burns 373 miles from Sacramento, and 373 miles from the state capital, Sacramento.
The fire sits 373 miles from Sacramento.

—

acreage not yet reported

21

days burning so far

—

no share of the perimeter reported held yet

The picture as of 9:09am today

The Lac-343044 Fire is burning. The last heat was seen 6 hours ago.

Shaded relief map of the Lac-343044 Fire. Amber flames mark every place that gave off heat in the last day; the shading is the shape of the ground.
Heat in the last day Higher ground pale, valleys dark Where another fire is recorded

6hours

since anything was last seen giving off heat — about 3:05am on Thursday, local time.

2readings

of heat in the last day. There is not yet an earlier stretch of record to compare that against.

1.8miles

is how close the heat has come to Walnut at any point in the record. In the last day the nearest heat has been 1.9 miles from it, and the closest this fire has come to Pomona is 3.5 miles, 3.6 in the last day.

0.9miles

is the furthest any heat has been seen from the point on the official record — the width of the ground involved so far.

38 other fires are burning inside the same view. Bar Fire started on Saturday 29 August, 3.0 miles south-west, and has reached an unrecorded size. Billy Fire started on Tuesday 6 October, 3.5 miles north, and has reached an unrecorded size. Bryson Fire started on Monday 21 September, 2.0 miles north, and has reached an unrecorded size. Campus Fire started on Friday 4 September, 2.6 miles north-east, and has reached an unrecorded size. Fox Fire started on Thursday 8 October, 0.7 miles south-east, and has reached an unrecorded size. Lac-297933 Fire started on Friday 21 August, 3.9 miles south-east, and has reached an unrecorded size. Lac-298861 Fire started on Saturday 22 August, 4.5 miles east, and has reached an unrecorded size. Lac-304628 Fire started on Wednesday 26 August, 4.4 miles east, and has reached an unrecorded size. Lac-306006 Fire started on Thursday 27 August, 1.7 miles north-east, and has reached an unrecorded size. Lac-306404 Fire started on Thursday 27 August, 0.8 miles south-east, and has reached an unrecorded size. Lac-310605 Fire started on Sunday 30 August, 1.9 miles north-east, and has reached an unrecorded size. Lac-310842 Fire started on Sunday 30 August, 2.9 miles south-west, and has reached an unrecorded size. Lac-312432 Fire started on Tuesday 1 September, 4.0 miles south-east, and has reached an unrecorded size. Lac-313070 Fire started on Tuesday 1 September, 1.2 miles north, and has reached an unrecorded size. Lac-313819 Fire started on Wednesday 2 September, 4.8 miles north-east, and has reached an unrecorded size. Lac-315298 Fire started on Thursday 3 September, 3.3 miles east, and has reached an unrecorded size. Lac-317096 Fire started on Friday 4 September, 2.8 miles east, and has reached an unrecorded size. Lac-331937 Fire started on Monday 14 September, 3.9 miles north, and has reached an unrecorded size. Lac-335083 Fire started on Thursday 17 September, 1.7 miles north-east, and has reached an unrecorded size. Lac-336252 Fire started on Friday 18 September, 4.9 miles south-west, and has reached an unrecorded size. Lac-338272 Fire started on Saturday 19 September, 4.1 miles east, and has reached an unrecorded size. Lac-342936 Fire started 96 minutes before this one, 3.7 miles east, and has reached an unrecorded size. Lac-343098 Fire started 39 minutes after this one, 3.7 miles east, and has reached an unrecorded size. Lac-343199 Fire started 128 minutes after this one, 3.7 miles east, and has reached an unrecorded size. Lac-343883 Fire started 863 minutes after this one, 4.1 miles east, and has reached an unrecorded size. Lac-345694 Fire started on Friday 25 September, 3.7 miles east, and has reached an unrecorded size. Lac-346148 Fire started on Friday 25 September, 4.0 miles north-east, and has reached an unrecorded size. Lac-347256 Fire started on Saturday 26 September, 2.5 miles north-east, and has reached an unrecorded size. Lac-347391 Fire started on Saturday 26 September, 3.8 miles north-east, and has reached an unrecorded size. Lac-347444 Fire started on Saturday 26 September, 2.9 miles east, and has reached an unrecorded size. Lac-348621 Fire started on Sunday 27 September, 4.5 miles north-east, and has reached an unrecorded size. Lac-351729 Fire started on Wednesday 30 September, 2.3 miles east, and has reached an unrecorded size. Lac-355860 Fire started on Saturday 3 October, 1.2 miles north, and has reached an unrecorded size. Lac-363483 Fire started on Thursday 8 October, 3.7 miles north-east, and has reached an unrecorded size. Lac-366472 Fire started on Saturday 10 October, 1.8 miles east, and has reached an unrecorded size. Margo Fire started on Saturday 19 September, 3.3 miles north-west, and has reached an unrecorded size. Owen Fire started on Thursday 10 September, 5.0 miles north, and has reached an unrecorded size. Scenic Fire started on Wednesday 14 October, 1.6 miles south, and has reached an unrecorded size. Their heat is counted against them, not against this fire, and the pale rings on the map mark where they are recorded.

Smoke has been recorded lying over this ground six times so far. The thickest of it was moderate between 1:10pm and 4:30pm local time. The last of those windows closed 161 hours ago, so what is overhead now is not known.

Where the heat is

No cluster large enough to call a separate front. The heat is in one piece.

Conditions measured 7.0 miles from the fire: 78°F, air at 19% humidity, a 12 mph wind out of the east.

How it got here

16 days of record on a day-23 fire

The record here begins at 2:56am on 23 Sep and runs to 3:04am on 15 Oct — 528 hours, 25 readings of heat. The fire is on day 23, so the first 7 days are missing: nothing showed up from above until the fire was large enough and the sky over it clear enough for it to be seen.

Animated map of the Lac-343044 Fire across the whole record, with a time bar along the bottom showing energy released and the local date.
The whole record, 179 frames at 3 hours a frame. The bar along the bottom is energy released; the moving line is the clock.

Day by day 16 days of record

  1. Map for Wed 23 Sep: flames mark every place that gave off heat that day.

    Wed23 Sep

    First readings

    • 1 heat readings
    • Heat from 2:56am to 2:56am
    • Spread 0.7 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  2. Map for Thu 24 Sep: flames mark every place that gave off heat that day.

    Thu24 Sep

    The fiercest day

    • 3 heat readings — the most of any day
    • Energy 2.0 times the day before
    • Heat from 2:02am to 2:58am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  3. Map for Fri 25 Sep: flames mark every place that gave off heat that day.

    Fri25 Sep

    Cooling off

    • 1 heat readings
    • Energy 100% down on the day before
    • Heat from 2:39am to 2:39am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  4. Map for Sat 26 Sep: flames mark every place that gave off heat that day.

    Sat26 Sep

    Flaring up

    • 2 heat readings
    • Heat from 2:20am to 3:04am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  5. Map for Tue 29 Sep: flames mark every place that gave off heat that day.

    Tue29 Sep

    Flaring up

    • 3 heat readings
    • Energy 2.0 times the day before
    • Heat from 2:07am to 3:04am
    • Spread 0.9 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  6. Map for Wed 30 Sep: flames mark every place that gave off heat that day.

    Wed30 Sep

    Cooling off

    • 1 heat readings
    • Energy 100% down on the day before
    • Heat from 2:43am to 2:43am
    • Spread 0.7 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  7. Map for Thu 1 Oct: flames mark every place that gave off heat that day.

    Thu1 Oct

    Flaring up

    • 1 heat readings
    • Heat from 2:26am to 2:26am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  8. Map for Fri 2 Oct: flames mark every place that gave off heat that day.

    Fri2 Oct

    Holding

    • 1 heat readings
    • Energy 1.0 times the day before
    • Heat from 2:52am to 2:52am
    • Spread 0.7 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  9. Map for Sat 3 Oct: flames mark every place that gave off heat that day.

    Sat3 Oct

    Holding

    • 1 heat readings
    • Energy 1.0 times the day before
    • Heat from 3:11am to 3:11am
    • Spread 0.7 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  10. Map for Mon 5 Oct: flames mark every place that gave off heat that day.

    Mon5 Oct

    Cooling off

    • 1 heat readings
    • Energy 100% down on the day before
    • Heat from 2:52am to 2:52am
    • Spread 0.7 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  11. Map for Tue 6 Oct: flames mark every place that gave off heat that day.

    Tue6 Oct

    Flaring up

    • 1 heat readings
    • Heat from 2:32am to 2:32am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  12. Map for Wed 7 Oct: flames mark every place that gave off heat that day.

    Wed7 Oct

    Holding

    • 1 heat readings
    • Energy 1.0 times the day before
    • Heat from 2:58am to 2:58am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  13. Map for Thu 8 Oct: flames mark every place that gave off heat that day.

    Thu8 Oct

    Cooling off

    • 1 heat readings
    • Energy 100% down on the day before
    • Heat from 2:37am to 2:37am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  14. Map for Fri 9 Oct: flames mark every place that gave off heat that day.

    Fri9 Oct

    Flaring up

    • 3 heat readings
    • Heat from 2:20am to 3:15am
    • Spread 0.9 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  15. Map for Wed 14 Oct: flames mark every place that gave off heat that day.

    Wed14 Oct

    Holding

    • 2 heat readings
    • Energy 1.0 times the day before
    • Heat from 2:26am to 3:04am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn
  16. Map for Thu 15 Oct: flames mark every place that gave off heat that day.

    Thu15 Octlatest

    Flaring up

    • 2 heat readings
    • Energy 2.0 times the day before
    • Heat from 2:43am to 3:04am
    • Spread 0.8 miles from the recorded point at its furthest
    • Burning through the pre-dawn

How the record has moved

Each step is a change on the interagency incident record — acreage, containment or crews — with the date it was reported. No satellite reading is involved.

  1. Wednesday 23 September

    First reported

No containment figure has been reported for it yet. No crew count has been published for it yet. Heat was still showing within the last half-day, and the record still lists this fire as active.