Ahead of a weak Pacific trough, some summer style ACSL was spotted NW of Boulder this AM. Hints of early fall. #COwx http://t.co/u3q85Vt2
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NWS Boulder (@NWSBoulder) August 11, 2012ACSL = Altocumulus Standing Lenticular (clouds).
Associated Wave Cloud shown here. Likely CCSL near 36000ft above the ACSL with cloud temps at -44°C or -47°F. #COwx http://t.co/NdmsIAU4
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NWS Boulder (@NWSBoulder) August 11, 2012
Posted by Coyote Gulch 
