Current Radar 

Christmas Day – Heavy Rain, Areal Flood Watch Williamson Co., Thunderstorms Also Possible – Early 61° High 65°

Heavy rain is on the way.

Flooding potential remains high in areas in and around the Watch area. Here’s the official text of the Watch:

Rainfall will be heavy. Forecast soundings show all time high precipitable water values for Christmas Day: 1.7″. Think of precipitable water like this. If you stuffed a towel in a giant tube, sent the tube straight up in the air through the atmosphere and let it soak up the moisture, then squeezed it out, you’d get 1.7″ of water. read more

Current Radar 

NWS-Nashville’s Area Forecast Discussion this morning led off with:

Christmas Eve – Sunny & Warn – High 70°

The cold front that triggered last night’s severe weather has come and gone. It cleared the clouds and sucked out the humidity (dew point has dropped 14° since last night), but the warm temps remain. read more

Current Radar 

Tonight’s Tornado Watch is Over for Davidson Co. The threat has passed Williamson Co.

Active weather remains a concern Friday and Monday or Tuesday of next week, although likely not nearly as worrisome as it has been today.

Anyway, I’m exhausted, no energy to update the forecast here on the website. read more

Current Radar 

The Storm Prediction Center has issued a Tornado Watch for us tonight.

If you don’t know what that is or what to do, click this.

The Watch will expire at 11 PM tonight.

The ETA of the storms approaching Middle Tennessee is between 6:30 PM and 7:30 PM. Those north of I-40 may see these storms arrive closer to 6:30 PM. Though south of I-40 may see the storms arrive closer to 7:30 PM. read more

Current Radar 

Severe Weather Risk Increases

The NOAA Storm Prediction Center has upgraded our risk from Enhanced to Moderate – level 4 of 5 on the scale of risks for severe weather. Updates to their outlook include adding wording for long track tornadoes. They are calling this a potential outbreak of severe thunderstorms. Nothing major has changed in terms of thunderstorm timing, but they believe that the threat for severe weather has increased. read more

Current Radar 

Tonight/Overnight – Maybe a Little Rain

There’s nothing on our radar right now, and the HRRR model isn’t too impressed by our overnight rain chances:

We may see a few light showers squeeze out in the middle of the night while the bulk of the rain passes to our SE, clearing out the SE US for tomorrow’s event. read more

Current Radar 

Tonight – Rain

HRRR expects rain to continue tonight, gradually tapering off in time for the morning rush-hour:

We expect a few weak thunderstorms embedded in the rain, posing no strong or severe concerns. Some downpours should be heavy, but overall, just a gross night, nothing more. read more

Current Radar 

Monday – Rain Increasing – High 61°

South winds blowing 13-16 MPH (gusting close to 30 MPH) are efficiently transporting a lot of moisture into Middle Tennessee, setting the stage for a good rain even this afternoon and tonight. read more

Current Radar 

Rain Is Coming

Earlier today, the NAM4 model showed a steady soaking rain starting just after midnight.

We need to adjust the timing and amount expected.

The HRRR has some off/on (mostly “off”) light showers arriving in the morning, but not nearly as dreary as the models showed this morning. read more

Current Radar 

Dec. 2015 on pace to be the 2nd warmest on record at Nashville. That avg. temp will only climb next week, too. pic.twitter.com/3wH7z7qfAO

— NWS Nashville (@NWSNashville) December 20, 2015 read more