The eastward-moving surge of warm moist air is bad news for the interior, as it translates into a freezing rain event for some. Freezing rain is already being reported as mixing with snow at Fairbanks airport, though it's not clear if this is correct as the 3 am sounding showed temperatures still far below freezing throughout the column.
Wednesday, November 13, 2013
Record Moisture Over Bethel
This morning's 3 am balloon sounding from Bethel measured an atmospheric profile with higher precipitable water (total column moisture) than ever observed before in November (1.10" vs 0.98" in 1991 and 1970). Remarkably, today's precipitable water measurement also matches the record for October (1.10" in 1970). The chart below shows the lower atmosphere profile: note the extremely warm saturated layer up to 6000 feet and freezing level above 10000 feet.