Narrative:

During taxi out I noticed potchy ground fog but determined it was not on the runway or even a threat to visibility. I am in a habit of 'firing up' and contacting tower -- rarely getting ATIS. After takeoff, I learned the tower had called visibility 1/2 mi. 3/4 mi is required for takeoff. Craig tower is known for their particularly lousy WX judgement. As a matter of fact, the next night I visited tower and asked the controller (the same controller as the previous night) why he was calling the current WX 3/4 mi. It was 15 mi at the very least and had been all night yet he made company aircraft hold over the VOR yet they could see the field. I should've gotten ATIS but would never have expected such a clear morning to be reported at 1/2 mi. In the future I'll do what my flight safety instructor made memo: determine legality of your flight under the conditions stated in ATIS.

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Original NASA ASRS Text

Title: PLT OF AN ATX CESSNA 210 TOOK OFF BELOW IFR WX MINIMUMS. HE USED HIS OWN WX OBSERVATION INSTEAD OF THE ATIS RPTED WX RPT.

Narrative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

Data retrieved from NASA's ASRS site as of July 2007 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.