Tuesday, December 8, 2009

Tuesday Evening Storm Update

As the storm approached today, it encountered very dry air in the lower atmosphere.  So, although the radar was lit up with echoes, the majority of it was evaporating before reaching the ground.

Things began to start hitting the ground around 4-5 pm in some of our southern sections.  The onset of the precip has been snow, and a mix of snow/sleet/rain.  With temps near 32, some of the rain has been freezing on untreated surfaces.

The colder sections of our viewing area (west of I-75 in northern Ohio and southern Michigan) will be the last to see the precip change to just plain rain tonight.

The storm will keep rainy conditions (and maybe even some thunder) around tonight into the morning rush hour Wednesday.  As cold air filters in after daybreak, rain will begin to mix with some wet snow (northwest to southeast) during the morning and midday hours.  There will be no sleet or freezing rain -- just rain and snow mixed.  The precip will be in the form of just snow in the afternoon.  Some snow showers will be enough to put down a light accumulation, a coating to 1", in some areas.

Of bigger concern Wednesday will be the winds.  Wind speeds will continue increasing in the morning, reaching sustained strengths between 25 & 40 mph, with some gusts exceeding 50 mph during the day.

Following this will be some of the coldest air since late February/early March on Thursday and Thursday night.  Highs will struggle to reach the mid 20s Thursday afternoon, and gusty winds will create wind chills near or slightly below zero.  With some breaks in the clouds Thursday night and Friday morning, lows will drop to near 10°.