Until 10 AM this morning (Saturday) a Winter Weather Advisory warns of freezing fog, freezing drizzle, and a few patches of light freezing rain laying down “ice accumulations of a light glaze.”
Bridges, overpasses, and elevated surfaces may be slick.
There is a lot of elevation variation throughout Williamson and Davidson counties, so it’s hard to say if your street specifically will have black ice. The safe thing is to assume that your street has slick spots. Then maybe you will be pleasantly surprised.
Rain ended after lunch. Instead of dry weather and a stiff wind, we got a steady drizzle for several hours.
Drizzle wet the streets.
Temps are dropping and should reach freezing everywhere in Davidson and Williamson Counties tonight. Black ice will form in spots, regardless of elevation. Many places will drop to 30°, some may get colder.
A Winter Weather Advisory is in effect from NOW until 6pm for the possibility of freezing rain accumulations.
Impacts so far have been on vegetation/elevated surfaces on the hills and ridges in both counties. The chance of seeing more widespread icing on outdoor objects increases once you go up into Fairview or Joelton.
Overnight, the National Weather Service issued a Winter Weather Advisory for both counties for the possibility of freezing rain. This will go into effect at 6pm tonight through 6 pm Thursday.
It is different from sleet. Sleet is defined as a partially melted snowflake that will freeze before reaching the surface in the form of an ice pellet.
At 7:34 PM Tuesday night light precip crept into West Tennessee. That blue precip is rain, the pink is frozen precip.
That rain will spread into west and middle Tennessee all day Wednesday. We should be in the “just rain” zone for most of the day Wednesday.
Not much happening today. Let’s talk about tomorrow and ice potential Thursday.
Showers will be light and off and on around midnight tonight and into the early morning hours Wednesday. Temps will be slightly too warm for any winter precipitation to occur.
A drizzle or two is possible Tuesday and Wednesday but most of the precip should pass north and northwest of us. Below is the forecast for total rainfall Tuesday through Wednesday night at midnight:
A heavier, steady rain event is expected here Thursday, pushed along by a cold front. It’ll be a cold rain.
Those atop hills may have woken up to a treat in the form of white frozen stuff. Maybe enough to break out your sled. But that’s probably a bit of a stretch.
Big flakes fell while most of us slept. Most of us were too warm, too low in elevation, for it to stick.
Clouds moved in overnight and will continue to hang out through the afternoon.
The HRRR shows rain beginning around 9 pm. The bulk of the rain should be out of the area by 4 am, but there could be a few showers lingering through 6 am. Around a half of an inch of rain is possible.
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