The Finger Rock Fire near Pontatoc Canyon has grown to about 750 acres, officials said Thursday evening.

The fire's new size was a result of more accurate fire mapping, officials said.

The fire showed minimal fire behavior on Thursday. Some moisture fell in the area and more is expected Friday.

The fire reignited Wednesday afternoon, producing smoke that could be seen across Tucson. Flames were visible for many Tucsonans Thursday night.

The fire was started July 29 by lightning but was dampened by storms. The fire smoldered but erupted as the vegetation dried out.

No crew was fighting the fire overnight.

Get the latest updates on the fire from social media below:

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Contact reporter Caitlin Schmidt at cschmidt@tucson.com or 573-4191. On Twitter: @caitlincschmidt

#FingerRockFire is visible this afternoon on the Catalina Mountains near Pontatoc Canyon at about 5000 feet in...

Posted by US National Weather Service Tucson Arizona on Wednesday, August 5, 2015

Currently

Clear, 73.5
Wind 3 MPH NNW, 23% humidity
UV index 5, visibility 10.0 miles
No precipitation today
No lightning strikes today

Today

12 pm: Clear, 76.1
Wind 6 MPH SE, 0% chance precip.
18% humidity, UV index 6
1 pm: Clear, 79.3
Wind 4 MPH SSE, 0% chance precip.
13% humidity, UV index 6
2 pm: Clear, 81.0
Wind 3 MPH NW, 0% chance precip.
11% humidity, UV index 5
3 pm: Clear, 81.6
Wind 3 MPH NW, 0% chance precip.
10% humidity, UV index 4
4 pm: Clear, 81.5
Wind 5 MPH NNW, 0% chance precip.
11% humidity, UV index 2
5 pm: Clear, 80.1
Wind 7 MPH NNW, 0% chance precip.
12% humidity, UV index 1
6 pm: Partly Cloudy, 76.2
Wind 6 MPH NW, 0% chance precip.
16% humidity, UV index 0
7 pm: Partly Cloudy, 70.9
Wind 4 MPH NW, 0% chance precip.
22% humidity, UV index 0
8 pm: Partly Cloudy, 67.1
Wind 3 MPH NNW, 0% chance precip.
28% humidity, UV index 0
9 pm: Partly Cloudy, 64.1
Wind 2 MPH SSW, 0% chance precip.
33% humidity, UV index 0
10 pm: Partly Cloudy, 62.3
Wind 3 MPH SSE, 0% chance precip.
36% humidity, UV index 0
11 pm: Partly Cloudy, 60.5
Wind 4 MPH SE, 0% chance precip.
40% humidity, UV index 0

Wednesday

12 am: Partly Cloudy, 59.2
Wind 4 MPH SE, 0% chance precip.
42% humidity, UV index 0
1 am: Mostly Cloudy, 58.2
Wind 5 MPH SE, 0% chance precip.
43% humidity, UV index 0
2 am: Mostly Cloudy, 57.1
Wind 4 MPH SE, 0% chance precip.
45% humidity, UV index 0
3 am: Mostly Cloudy, 56.1
Wind 4 MPH ESE, 0% chance precip.
48% humidity, UV index 0
4 am: Partly Cloudy, 55.5
Wind 5 MPH SE, 0% chance precip.
49% humidity, UV index 0
5 am: Mostly Cloudy, 55.1
Wind 5 MPH SE, 0% chance precip.
48% humidity, UV index 0
6 am: Clear, 54.8
Wind 5 MPH SE, 0% chance precip.
47% humidity, UV index 0
7 am: Clear, 54.7
Wind 7 MPH SE, 0% chance precip.
46% humidity, UV index 0
8 am: Clear, 57.2
Wind 7 MPH SE, 0% chance precip.
40% humidity, UV index 0
9 am: Clear, 63.6
Wind 7 MPH SE, 0% chance precip.
32% humidity, UV index 2
10 am: Clear, 70.7
Wind 7 MPH SE, 0% chance precip.
23% humidity, UV index 3
11 am: Partly Cloudy, 75.5
Wind 7 MPH SSE, 0% chance precip.
18% humidity, UV index 5
12 pm: Partly Cloudy, 79.8
Wind 6 MPH SSW, 0% chance precip.
15% humidity, UV index 6
1 pm: Partly Cloudy, 83.8
Wind 8 MPH SW, 0% chance precip.
13% humidity, UV index 6
2 pm: Partly Cloudy, 85.7
Wind 12 MPH WSW, 0% chance precip.
12% humidity, UV index 5
3 pm: Partly Cloudy, 85.7
Wind 14 MPH WSW, 0% chance precip.
12% humidity, UV index 3
4 pm: Partly Cloudy, 84.8
Wind 15 MPH WSW, 0% chance precip.
13% humidity, UV index 2
5 pm: Partly Cloudy, 82.5
Wind 14 MPH WSW, 4% chance precip.
13% humidity, UV index 1
6 pm: Partly Cloudy, 79.0
Wind 12 MPH WSW, 5% chance precip.
15% humidity, UV index 0
7 pm: Clear, 75.0
Wind 8 MPH WSW, 5% chance precip.
19% humidity, UV index 0
8 pm: Clear, 71.5
Wind 5 MPH SW, 0% chance precip.
23% humidity, UV index 0
9 pm: Clear, 69.0
Wind 5 MPH SSW, 0% chance precip.
24% humidity, UV index 0
10 pm: Partly Cloudy, 66.5
Wind 5 MPH SSE, 0% chance precip.
28% humidity, UV index 0
11 pm: Partly Cloudy, 64.2
Wind 5 MPH SSE, 0% chance precip.
32% humidity, UV index 0

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