April 27…Severe Potential Update

Today is the 5th anniversary of the horrific tornado outbreak that ripped through Alabama taking the lives of many and leaving an incredible path of destruction.  Middle Tennessee did not go unscathed that day, but the impact wasn’t nearly has traumatic.  There were about 2 dozen weaker tornadoes here.Blog April 27

We do have the potential of severe thunderstorms this evening, but nothing on the level that occurred 5 years ago. Not all of the ingredients are there.  There is a warm, moist air mass in place and we do have an approaching front for lift.  But there is no wind shear to speak of…that is wind that is changing direction with height.  That is what causes a storm to rotate.  Tonight’s threat will focus on I-65 westward, especially on along the Tennessee River.  The Storm Prediction Center has has most of the mid state in a “marginal risk” zone.  That’s 1 on a scale of 1-5.  There is a small “slight risk” area, 2 on the scale.

LISA  SEVERE RISK REGION

The severe weather threat extends into Kentucky and south into Alabama and Mississippi.

LISA  SEVERE RISK REGION1

The greatest threat tonight will be from damaging wind of 60mph or greater and from large hail, 1″ in diameter or larger. The tornado threat will be low.  All of the storms should be out of Middle Tennessee by 12 mid tonight.

Lisa What to Expect 2

The next system arrives Friday night into Saturday.  That will bring unsettled weather over the weekend.  There could be some severe storms, but I don’t think it will rain all weekend.

WSMV 4DAY FORECAST

With some many running the big marathon Saturday morning, be prepared for rain. We’ll keep fine tuning this forecast.  This model depiction does include plenty of rain.

WSMV RPM 12KM WxType Stationary

We’ll keep you updated on Channel 4 News at 4:30pm, 5, 6 and 6:30pm.

Lisa Spencer

posted 4:30pm

 

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About Lisa Spencer

Lisa Spencer is the chief meteorologist at WSMV Channel 4 Nashville. You can catch her weathercasts weekdays at 5pm, 6pm and 10pm.
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