The Storm Prediction Center has issued a Tornado Watch for Davidson and Williamson Counties until 2 AM.
The Watch reflects concern a line of storms, ETA between 11 PM and 2 AM, will produce tornadoes. Most models are trending toward a midnight to 1 AM ETA, but you should remain alert for warnings and ETA changes until this line passes. Storms may arrive early. Storms will form a line and come in from the northwest.
Storms are more likely Wednesday, less likely Tuesday.
No/few storms Tuesday thru 7 PM per HRRR model:
Models are quiet Tuesday night. Storms show up on the NAM3 model around sunrise Wednesday morning but those look weak.
Storms are coming.
Strong surface winds blowing from the southwest will gradually increase late this morning and this afternoon. Winds will transport humid air, fueling storms later. No rain or storms expected early/mid afternoon.
A Tornado Watch is in effect until 10 PM for Williamson County, not Nashville (not Davidson County).
The warm front we’ve been talking about all day isn’t expected to make it to Nashville/Davidson County. The storms got here early/mid afternoon, and removed any fuel storms later could use to power up. No guarantees, but I think this will be a non-event in Nashville/Davidson County. But we could still see heavy rain, thunderstorms, even some small hail, but the tornado concern is nah.
Sometimes they do a “growl” for certain sirens (not a full wail) for testing purposes, but until this morning I was never exactly sure when they might do it.
Sirens are a secondary warning method for those outside. You aren’t guaranteed to hear them. Best to have a wake-me-up app on your phone and a NOAA weather radio in your house. Sirens aren’t designed to be heard inside and there’s no guarantee you will always hear them outside either, especially if you’ve got your earbuds in, Denise.
