Narrative:

The objective of the training flight was to gain cross-country experience as well as learn how to navigate around isolated snow showers. We were in a non-IFR certified aircraft. No flight plan was filed. A website was consulted for weather; but no preflight brief was attained. The weather was reported as isolated snow showers and light winds. We departed ZZZ1 for ZZZ at XA00 local time with an enroute distance/time of 56 miles/50 minutes. As we circumnavigated the isolated snow showers; our time enroute had extended to 1 hour 40 minutes. The sun had set and daylight was fading; our original destination was obscured with snow; so we decided to divert to another airport. We contacted ZZZ approach control and asked for vectoring assistance; but all airports within 20 miles were IMC with snow. The area where we were flying was VFR with unlimited ceiling. I decided that it was safer to land the airplane in a field while we had remaining daylight instead of trying to navigate around snow showers in the dark. No mayday call was made; but the approach controller was informed of our decision. We were given a phone number to contact the tower after we landed and then descended to the farm field. The field was frozen solid with about 3 inches of snow. The approach was upwind parallel to the furrows. A soft field landing technique was used with no damages/injuries to the aircraft or the 2 occupants. In conclusion; a full preflight brief would have given us a more accurate understanding of the weather we encountered. A better understanding of the weather could have led us to the decision not to fly that day.

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Original NASA ASRS Text

Title: C150 Instructor with student reports landing in frozen field after unsuccessful attempts to locate VMC airport before darkness. No damage and no injuries reported.

Narrative: The objective of the training flight was to gain cross-country experience as well as learn how to navigate around isolated snow showers. We were in a non-IFR certified aircraft. No flight plan was filed. A website was consulted for weather; but no preflight brief was attained. The weather was reported as isolated snow showers and light winds. We departed ZZZ1 for ZZZ at XA00 local time with an enroute distance/time of 56 miles/50 minutes. As we circumnavigated the isolated snow showers; our time enroute had extended to 1 hour 40 minutes. The sun had set and daylight was fading; our original destination was obscured with snow; so we decided to divert to another airport. We contacted ZZZ Approach Control and asked for vectoring assistance; but all airports within 20 miles were IMC with snow. The area where we were flying was VFR with unlimited ceiling. I decided that it was safer to land the airplane in a field while we had remaining daylight instead of trying to navigate around snow showers in the dark. No Mayday call was made; but the Approach Controller was informed of our decision. We were given a phone number to contact the Tower after we landed and then descended to the farm field. The field was frozen solid with about 3 inches of snow. The approach was upwind parallel to the furrows. A soft field landing technique was used with no damages/injuries to the aircraft or the 2 occupants. In conclusion; a full preflight brief would have given us a more accurate understanding of the weather we encountered. A better understanding of the weather could have led us to the decision not to fly that day.

Data retrieved from NASA's ASRS site as of April 2012 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.