Narrative:

During a personal flight; I observed smoke associated with a fire; and lots of aerial traffic swarming around that area; according to ads-B. The location of the fire was approximately X NM northwest of ZZZ1; while I was flying a line between ZZZ and ZZZ1. My efb software was not showing a tfr in this location; but did show other tfr's. The activity suggested there was a tfr; so I adjusted my position to be further east. Checking the FAA tfr site on my phone upon landing ZZZ1 showed there was a tfr created since my preflight briefing at home; but before entering the area in the flight. I believe I remained clear; but very close.contributing factors:tfr was created in that window of time between briefing and flight. In-flight data is relied on for these updates; but the tfr did not post in time. ATC has been difficult to get flight following since pandemic made them busier; so I stopped trying for short flights.discovery was recognizing the situation; and corrective action was making room for fire fighting.

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Original NASA ASRS Text

Title: Pilot reported flying nearby an area of smoke and was unable to find an associated TFR. After the flight; pilot confirmed a TFR was active but did not post in time on EFB software.

Narrative: During a personal flight; I observed smoke associated with a fire; and lots of aerial traffic swarming around that area; according to ADS-B. The location of the fire was approximately X NM NW of ZZZ1; while I was flying a line between ZZZ and ZZZ1. My EFB software was not showing a TFR in this location; but did show other TFR's. The activity suggested there was a TFR; so I adjusted my position to be further east. Checking the FAA TFR site on my phone upon landing ZZZ1 showed there was a TFR created since my preflight briefing at home; but before entering the area in the flight. I believe I remained clear; but very close.Contributing factors:TFR was created in that window of time between briefing and flight. In-flight data is relied on for these updates; but the TFR did not post in time. ATC has been difficult to get flight following since Pandemic made them busier; so I stopped trying for short flights.Discovery was recognizing the situation; and corrective action was making room for fire fighting.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.