Awatchfire

San Luis Obispo County, California

Grade Fire

Burning 3.0 miles north-east of California Polytechnic State University and 4.0 miles south of Santa Margarita, since Wednesday 23 September.

Map of California. The Grade Fire burns 228 miles from Sacramento, and 228 miles from the state capital, Sacramento.
The fire sits 228 miles from Sacramento.

33

acres burned so far

21

days burning so far

—

no share of the perimeter reported held yet

The picture as of 9:09am today

The Grade Fire is still listed as active, and has not been looked at lately. Nothing has given off fresh heat for 523 hours.

No fresh look at this fire for 523 hours. Everything on the map below was seen before then.

Shaded relief map of the Grade 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

523hours

since anything was last seen giving off heat — about 2:35pm on Wednesday, local time.

0readings

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

3.1miles

is how close the heat has come to California Polytechnic State University at any point in the record. In the last day the nearest heat has been None miles from it, and the closest this fire has come to Santa Margarita is 3.7 miles, None in the last day.

0.3miles

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

Two other fires are burning inside the same view. Pouch Fire started on Friday 11 September, 3.8 miles west, and has reached 19 acres. Stenner Fire started on Monday 21 September, 3.3 miles west, and has reached 0 acres. 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 thin between 5:00am and 8:00am local time. The last of those windows closed 17 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 3.7 miles from the fire: 69°F, air at 21% humidity, a 5 mph wind out of the north.

How it got here

One day of record on a day-23 fire

The record here begins at 2:16pm on 23 Sep and runs to 2:36pm on 23 Sep — 0 hours, 5 readings of heat. The fire is on day 23, so the first 22 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. There is no long arc to draw yet. What follows is what has actually happened.

Animated map of the Grade Fire across the whole record, with a time bar along the bottom showing energy released and the local date.
The whole record, 7 frames at 1 hour a frame. The bar along the bottom is energy released; the moving line is the clock.

Hour by hour local time

Wed 2:00pmWed 2:00pm

Each bar is one hour of local time, sized by how much energy the fire gave off in it. This fire is too young for a day-against-day comparison to say anything, so the hours are shown instead.

Day by day 1 day of record

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

  2. Wednesday 23 September

    40 acres on record

    40 ac
  3. Wednesday 23 September

    Revised to 33 acres

    33 ac

No containment figure has been reported for it yet. No crew count has been published for it yet. It has grown from 0 acres when it was first written down to 33 now. Nothing has looked at it for 523 hours, and the record still lists it as active.