Remember in the summer, when it can be pouring down the street, but dry at your place? Same kinda thing incoming overnight about temps. Temp will be influenced by elevation and location: 34°, 33°, 32°, 31°, 30° will be scattered across our county. The average temp freezing line..
...is expected to bisect Davidson and Williamson Counties. Note that we need 31° and 30° temps for a long time to cause ice accretion, but the problem is there is no indication where the hazards are. Icy roads will look wet, and wet roads will look icy. You can keep an eye on ..
.. personal weather station surface temperatures here (wrh.noaa.gov/map/?&zoom=8&s…) early Thursday morning. Note not all those stations are calibrated. Fun, isn't it? ...
...now, it's possible the rain we get will be too light, limiting ice development. Also, the freezing line may move quickly north of us during the day Thursday and allow our precip to melt. Or we could get hammered by ice overnight which will pin our surface temps to freezing ...
... and keep the ice development around during the day -- that is unlikely but possible. For now we think this is a mainly Joelton/Fairview event, with potential for icing and travel problems to move closer to Nashville, Brentwood, Franklin. /end rant/ /blog coming/
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