12 UTC Day 1 (Hour 12)
The latest sounding is saturated throughout the lower and middle troposphere with the temperatures and dewpoints generally corresponding to the wet-bulb temperatures in the sounding 12 hours ago. Precipitation began falling about 2 hours ago, initially as light rain, but quickly turned to snow as evaporative cooling lowered the temperatures to 0°C or below as the boundary layer became saturated. Moderate snow is being observed at the surface and it is beginning to accumulate on grassy surfaces. The NWP models are consistent with predicting warm advection aloft in a narrow layer centered around 800 hPa. The forecast indicates that the 800 hPa temperature will warm approximately 2°C over the next twelve hours (by 00 UTC Day 2), but temperatures below 850 hPa will remain fairly steady through the period.