Narrative:

Left yqm for bos. Forecast was for 1/4 mi visibility at ETA, sa was 1/4 mi and 6000 RVR. Company mins are 1800 RVR, or 1/2 mi. Far 135.219 flight left yqm to bos, forecast for 1/4 mi at ETA, flight needed 1/2 mi. Crew interpreted the forecast wrong. Being more careful, reading WX. Working as a first officer, I advised the captain that the WX was below mins. When they boarded up 45 min later, I figured he had gotten an update and the WX had come up. Should have checked with him.

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Original NASA ASRS Text

Title: COMMUTER ACFT DEPARTS WITH DEST WX BELOW MINS.

Narrative: LEFT YQM FOR BOS. FORECAST WAS FOR 1/4 MI VISIBILITY AT ETA, SA WAS 1/4 MI AND 6000 RVR. COMPANY MINS ARE 1800 RVR, OR 1/2 MI. FAR 135.219 FLT LEFT YQM TO BOS, FORECAST FOR 1/4 MI AT ETA, FLT NEEDED 1/2 MI. CREW INTERPRETED THE FORECAST WRONG. BEING MORE CAREFUL, READING WX. WORKING AS A FO, I ADVISED THE CAPT THAT THE WX WAS BELOW MINS. WHEN THEY BOARDED UP 45 MIN LATER, I FIGURED HE HAD GOTTEN AN UPDATE AND THE WX HAD COME UP. SHOULD HAVE CHKED WITH HIM.

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.