Storm Update: Widespread Flash Flooding Across Mid TN

flooding expected overnight
photo: NWS

UPDATE: March 28, 8am

NWS reports: Rain has finally ended in Nashville this morning, and the final rainfall total at Nashville International Airport 7.01″

The rain has subsided for most of Middle Tennessee, but some creeks and rivers are on the rise. Flooded roads will be an issue throughout the day today. Be careful and never drive through a water covered road.

UPDATE: March 28, 1:32am

Flash Flood Emergency is still in effect for Northern Williamson, Southern Davidson and West Wilson Counties and is a very serious weather alert. However, NashSevereWx believes we may be nearing the end of the heavy rain. Flooding will continue for awhile.

UPDATE: March 28, 12:47am

NWS has issued a FLASH FLOOD EMERGENCY for Northern Williamson, Southern Davidson and West Wilson Counties. This is the highest possible flash flooding warning NWS can issue.

flash flood emergency march 28

UPDATE: March 28, 12:32am

UPDATE: March 27, 11:53pm

NWS has issued a Severe Thunderstorm Warning for:
Southern Davidson County
Northwestern Rutherford County
Northeastern Williamson County
West central Wilson County

Until 12:15 AM

At 11:44 PM, a severe thunderstorm was located over Forest Hills, or near Franklin, moving east at 40 mph.

HAZARD: 60 mph wind gusts and quarter size hail.

IMPACT: Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

Locations impacted include:
Franklin, Smyrna, Brentwood, La Vergne, Mount Juliet, Nolensville, Forest Hills, Oak Hill, Belle Meade, Hermitage, Rural Hill, Bellevue, Antioch, Berry Hill, Green Hill and Percy Priest Lake.

UPDATE: March 27, 11:40pm

A new Tornado Watch has been issued for parts of Middle Tennessee until 6 a.m.

The Tornado Watch includes Maury County but not Williamson County. However, NashSeverWx says “I think we could see a rotating storm creep south of I-840, maybe even north to HWY 96 tonight, in Will Co.”

Flash Flood Warning continues for Nashville TN, Franklin TN, Brentwood TN until 3:15 AM CDT

tornado watch columbia
photo: NWS

UPDATE: March 27, 10:20pm

UPDATE: March 27, 10:16pm

UPDATE: March 27, 9:33pm

NWS has issued a Flash Flood Warning for Southern Williamson County until 3:30am Sunday.

Latest report from NWS: life-threatening Flash Flooding overnight (see the graphic at the very top of the article).

Additional showers will continue across ALL of Middle TN with an axis of heavy rainfall currently setting up to our west. DO NOT drive overnight unless it is absolutely necessary.

In addition to the flooding threat, we still do have a Tornado Watch for Perry and Wayne Counties until 4 AM. There is still a small threat of damaging winds, small hail, and isolated tornadoes south of I-40 and west of I-65. Have a way to receive warnings overnight. Ways to receive a warning overnight include NOAA Weather Radios, leaving your cell phone ON, have cell phone app alerts ON to notify you.

UPDATE: March 27, 9:20pm

UPDATE: March 27, 8pm

Get the latest from NWS on what to expect overnight:

UPDATE: March 27, 7:50pm

NWS issued a Significant Weather Advisory for Northwestern Williamson, Southwestern Davidson and South Central Cheatham Counties until 8:15pm.

At 7:39 PM, Doppler radar was tracking a strong thunderstorm near Fairview, or 12 miles west of Franklin, moving northeast at 45 mph.

Half inch hail will be possible with this storm.

Locations impacted include:

Franklin, Nashville, Brentwood, Forest Hills, Oak Hill, Belle Meade,
Kingston Springs, Pegram, Bellevue, Antioch, Fairview, Berry Hill,
Bells Bend and Natchez Trace At Highway 96.

UPDATE: March 27, 7:10pm

NWS Update: Severe t’storms continue across Middle TN with damaging winds and hail being reported. Let us know what you are seeing.

In addition, flash flooding is occurring in the shaded areas. Stay off of roadways in these areas!

severe weather update 721pm
photo: NWS

UPDATE: March 27, 7:11pm

UPDATE: March 27, 6:45pm

Severe Thunderstorm Warning for Southeastern Williamson County until 7pm & Flash Flood Warning for Central Williamson until 9:45pm. More details below.

Severe Thunderstorm Warning

NWS has issued a Severe Thunderstorm Warning Northeastern Marshall County, Western Rutherford County, Northeastern Maury County and Southeastern Williamson County until 7:00 PM.

At 6:38 PM, a severe thunderstorm was located near Columbia, moving east at 45 mph.

HAZARD: 60 mph wind gusts and quarter size hail.

IMPACT: Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

Locations impacted include Columbia, Spring Hill, Chapel Hill, Eagleville and I-65 East Of
Columbia.

This includes Interstate 65 between mile markers 43 and 54.

Flash Flood Warning

NWS has issued a Flash Flood Warning for Northeastern Maury County and Central Williamson County until 9:45pm.

At 6:44 PM, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 3 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly.

IMPACT: Flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other drainage and low lying areas.

Some locations that will experience flash flooding include Franklin, Columbia, Brentwood, Spring Hill, Nolensville, Thompson`s Station, Leipers Fork, Santa Fe and Triune.

A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property.

Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles.

UPDATE: March 27, 6:26pm

NWS has issued a Severe Thunderstorm Warning for  Northeastern Maury County and
Central Williamson County in Middle Tennessee until 7:00 PM.

At 6:18 PM CDT, a severe thunderstorm was located 12 miles south of Fairview, or 13 miles northwest of Columbia, moving east at 35 mph.

HAZARD: 60 mph wind gusts and quarter size hail.

IMPACT: Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

Locations impacted include Franklin, Columbia, Spring Hill, Thompson`s Station and Leipers Fork.

This includes the following highways:
Interstate 65 between mile markers 51 and 66.
Interstate 840 between mile markers 10 and 37.

storm timing 630pm march 27
photo: @NashSevereWx

UPDATE: March 27, 6:03pm

As the storm from the southwest enters our area, NWS has downgraded the threat from Tornado Warning to Severe Thunderstorm Warning.

UPDATE: March 27, 5:41pm

NashSevereWx Update: Rotation area (from the west) in supercell will be in Spring Hill / Thompson’s Station around 645 PM or so IF (1) it holds together and (2) the warm front continues to creep north. Mobile and Manufactured home residents move now to safe structure.

UPDATE: March 27, 5pm

NashSevereWx is warning Williamson County residents to remain weather aware this evening. Two tornado warned storms to the west could come into Williamson County after 6pm.

UPDATE: March 27, 2:46pm

Flooding remains a major concern:

NashSevereWx reports: “Already 2″ to 3″ has fallen, much more incoming. Main concern for the worst flooding is south of I-40, and especially cutting through Will Co. Nashville will see less rain by comparison, but it also doesn’t drain as efficiently. Concern rising for flash flooding tonight.”

The National Weather Service has issued a Flood Warning for the following rivers in Tennessee from late tonight to late Sunday night.:

Harpeth River Near Kingston Springs affecting Cheatham County.
Harpeth River At Bellevue affecting Williamson and Davidson Counties.
Harpeth River At Franklin affecting Williamson County.

A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately.

At 2:15 PM CDT Saturday the stage was 13.6 feet and rising.
* Flood stage is 30.0 feet.
* Moderate flooding is forecast.
* The river is expected to rise above flood stage just after midnight tonight to a crest of 34.2 feet tomorrow morning. It will then fall below flood stage late tomorrow evening.
* Impact…At 34.0 feet, Pinkerton Park is completely flooded.
* Flood History…This crest compares to a previous crest of 33.7 feet on 03/13/1975.

Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles.

A Flash Flood Watch remains in effect until 7 AM Sunday.

More Storms Expected This Evening

Timing for the most intense storms is roughly 9PM-2AM. This could change with newer data, per NashSevereWx

Tornado Watch South of Williamson County

NWS issued a Tornado Watch until 9pm for parts of Alabama, Arkansas, Mississippi and Tennessee until 9 PM; however, NWS says if you live north of the watch this does not mean you are in the clear. Keep monitoring because we may need to include you in an additional watch later this evening. The threat may struggle to reach as far north as Clarksville, but we still can’t rule out a severe weather threat that far north later tonight.

tornado watch march 27 until 9pm
photo: NWS

UPDATE: March 27, 12:30pm

NWS has issued a Flash Flood Warning for the following until 3:15pm:

Northwestern Bedford County
Northeastern Marshall County
Southeastern Maury County
Southwestern Rutherford County
Southeastern Williamson County

A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property.

A Flash Flood Watch remains in effect until 7 AM Sunday.

NashvilleSevereWx update on possible tornadoes later today: “HRRR model has us on the good side of the warm front by 7 PM tonight. It is still there at midnight. If the model is correct, our [tornado] concern decreases. But if it drifts into Will Co, our main concern will be along and south of it. Tornadoes love the south side of these warm fronts.”

“Even though we may end up on the ‘good’ side of the warm front tornado-wise, the HRRR forecast for Total Rainfall from noon today to 5 AM Sunday is –alarming–. Has 7″ and 8″ additional inches in Will Co. Even at half that, widespread flash flooding will occur.”

Flooding is a major concern across middle Tennessee.

NWS says “the heaviest rain hasn’t even arrived yet. If the rivers and creeks in your location already look like this, be prepared for them to get even worse later today and tonight. Many rivers are likely to overflow their banks.”

*****

UPDATE: March 27, 10:30am

NashSevereWx update on rainfall: Radar estimates 2″ has fallen already in parts of Will Co. Other locations 1″ to 2″. Much more rain coming today and especially tonight. Flash Flooding most likely hazard later today and tonight.

A Flood Advisory is in effect until 11:15am Saturday and a Flash Flood Watch remains in effect until 7 AM Sunday.

A Flood Advisory means river or stream flows are elevated, or ponding of water in urban or other areas is occurring or is imminent.

A Flash Flood is flooding caused by heavy or excessive rainfall in a short period of time (generally less than 6 hours). A Flash Flood Watch indicates current or developing conditions that are favorable for flash flooding in and close to the watch area, but the occurrence is neither certain or imminent.

A Flash Flood Watch remains in effect until 7 AM Sunday.

UPDATE: March 27, 9:30am

NashSevereWX reports all the warnings are over for this morning. More rain incoming. Another round of storms possible this afternoon, and/or likely tonight.

A Flash Flood Watch remains in effect until 7 AM Sunday.

UPDATE: March 27, 8:10am

Multiple rounds of storms are expected on Saturday. The first round is moving across middle Tennessee this morning with a torrential downpour, hail, thunder and lightning. Lots of reports of hail in Williamson County, especially in the Spring Hill area and strong winds have been reported throughout the area.

Severe Thunderstorm Warning including Franklin TN, Smyrna TN, La Vergne TN in effect until 8:45 AM CDT

Flood Advisory in affect until 11:15 AM CDT. A Flood Advisory means river or stream flows are elevated, or ponding of water in urban or other areas is occurring or is imminent.

Some locations that will experience flooding include: Franklin, Columbia, Hohenwald, Centerville, Linden, Brentwood, Spring Hill, Mount Pleasant, Thompson`s Station, Lobelville, Hampshire, Gordonsburg, Williamsport, Primm Springs, Kimmins, Santa Fe, Pleasantville, Leipers Fork, Natchez Trace At Highway 96 and Flatwoods.

Rain is expected to dissipate by later afternoon to early evening. Another round of storms is expected tonight, with the worst of these evening storms most likely will occur between 10 PM and 2 AM, says NashSevereWx.

Biggest threats (from NWS): heavy rainfall leading to flash flooding, so if you live in a flood prone area keep this in mind! Also remember that if you encounter flooded roads – Turn Around, Don’t Drown! However, these storms will also pose a risk for a few tornadoes, thunderstorm wind gusts up to 75 mph, and large hail. Know where your safe place and shelter is located in case a warning is issued for your home today or tonight!

weather threats for march 27UPDATE: March 27, 7am

A Severe Thunderstorm Warning is in effect until 7:30am for Davidson, Northeastern Maury, Southwestern Sumner, Williamson and Cheatham Counties.

At 656 AM CDT, severe thunderstorms were located along a line extending from near Ashland City to 12 miles east of Centerville, moving east at 35 mph.

HAZARD…60 mph wind gusts and quarter size hail.

IMPACT…Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.

Locations impacted include…
Franklin, Ashland City, Nashville, Madison, Hendersonville, Brentwood, Spring Hill, Goodlettsville, Millersville, Nolensville, Forest Hills, Oak Hill, Belle Meade, Kingston Springs, Lakewood, Thompson’s Station, Pegram, Hermitage, Fairview and Bellevue.

This includes the following highways:

Interstate 40 between mile markers 183 and 219.
Interstate 65 between mile markers 54 and 101.
Interstate 24 between mile markers 32 and 59.
Interstate 840 between mile markers 8 and 39.

  • Flash Flood Watch remains in effect  Until 7pm Sunday

Original Story:

Several rounds of showers and thunderstorms are expected across Middle Tennessee from mid-morning hours on Saturday through at least Sunday morning. Above is a graphic of where NWS thinks the majority of severe weather will be focused.

What to Know:

  • Flash Flood Watch in effect from 7am Saturday Until 7pm Sunday
  • Storm will come in two waves – the first in the morning, then there will be a brief break and then another Saturday afternoon through Sunday morning
  • These storms are predicted to be strong to severe, bringing an additional 1 to 3 inches with locally higher amounts ranging from 4 to 5 inches of rainfall to already saturated ground conditions.
  • While severe hail/wind is possible in the morning, the greater severe risk arrives Saturday afternoon overnight into Sunday. Tornadoes, large hail, and damaging wind all possible.