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Complaints About Nighttime Cold Bias Over Snow
Toronto forecaster, Bryan Tugwood said, “I've noticed some more Eta biases with respect to temperatures. Suddenly in the past few weeks the minimum temperatures have been way too cold... especially near the Great Lakes. I mean by as much as 5-10C…and this seems to be happening every night. Strangely enough the maximums are still doing a great job! Last night the Eta forecast -15C for YYZ and the min was -10C. I noticed the similar thing for you guys in BUF. I'm not sure if it is a snow on ground issue? However this problem is even occurring in areas which have a large snow pack.”