Rain is likely Saturday morning, afternoon, and evening. How much and when remains uncertain. Let’s get to it.
ETA
Depends on the model you believe. But we think the storms will arrive early Saturday morning.
Temps around sunrise are below freezing. Some areas are in the mid/upper 20°s.
Temps will rise into the low/mid 50°s as clouds arrive this afternoon.
Our air is really dry. No rain expected today.
A shortwave will cross by after midnight. It may drop us a little rain, but not enough to rain stuff out. Here’s the NAM3 model:
Clouds will gather tonight, forming light rain in the morning. Shortly before lunch, some of the rain may be heavy, at least that’s according to the HRRR model:
A few more showers are possible through the day Monday. It may be enough rain to rain out Monday night games. That will depend on the field.
1 PM to 5 PM Monday.
Obviously, this risk will occur during school dismissal and the evening commute.
Hail, and/or damaging thunderstorm winds, and/or tornadoes.
In the order of likelihood, assuming we get a storm: (1) Hail–most likely. (2) Damaging thunderstorm winds–next most likely. (3) Tornadoes–third most likely. Hail is not that much more likely than tornadoes, though. Consult the below chart from NWS-Nashville:
Quickly, about today, we’re not expecting rain. We may see light rain show up late tonight. Here’s the HRRR model’s prediction thru 11 PM:
The Storm Prediction Center issues outlooks for severe weather. Six categories for severe weather are used, beginning at general, non-severe thunderstorms, and running all the way from 1 through 5, with five being the “worst.”
Williamson County is excluded from the Advisory.
So, I’m going to break this down by county.
The Winter Weather Advisory is for the northernmost counties in Middle Tennessee. Davidson County is included as part of the second row of those northernmost counties.