A graphic from NWS Nashville exhibiting a flash flood look ahead to counties in central Tennessee on March … [+]
Heavy thunderstorms might trigger flash flooding this week throughout components of Tennessee nonetheless struggling to get well from the terrible storms and flooding the area skilled this previous weekend. The bottom is saturated sufficient throughout Tennessee, Arkansas, and Mississippi that it gained’t take a lot heavy rain to set off flash flooding.
A powerful chilly entrance sweeping down the Plains will attain the Mid-South by Tuesday. The entrance will transfer right into a heat and humid atmosphere, offering the carry and instability wanted to gas thunderstorms on Tuesday and Wednesday.
A number of the storms may very well be extreme with damaging wind gusts, giant hail, and remoted tornadoes doable. The Storm Prediction Middle‘s forecast for Tuesday requires a marginal danger for extreme thunderstorms throughout a lot of the decrease Mississippi Valley.
The WPC’s forecast for the danger for extreme rainfall that might trigger flash flooding on March 30, … [+]
Winds and hail will not be the one risk these storms pose. Excessive moisture and slow-moving thunderstorms might set the stage for extra flash flooding. The Climate Prediction Middle’s newest extreme rainfall outlook for Tuesday reveals a slight danger for flash flooding in southern Arkansas, northern Mississippi, and the western half of Tennessee. The risk for flooding will proceed by means of Wednesday.
A map of noticed precipitation totals between March 22, 2021, and March 29, 2021.
Some components of the Mid-South witnessed an excessive rainfall occasion when thunderstorms repeatedly moved over the identical areas on Saturday night time. Communities south of Nashville recorded double-digit rainfall totals in the course of the seven days between March 22 and March 29, the majority of which fell in Saturday’s storms. A big swath of Tennessee has seen a minimum of half a foot of rain within the final week.
Given the extraordinary storms the area skilled this previous weekend, it gained’t take a lot heavy rain from this week’s storms to set off flash flooding. The most recent flash flood steering signifies that it could solely take one or two inches of rain falling over the course of a few hours to result in flash flooding on roadways and waterways throughout the affected areas. The Nationwide Climate Service issued flash flood watches for the central a part of Tennessee, together with the Nashville metro space, in anticipation of extra heavy rain from the approaching thunderstorms.
Nearly all of flood-related deaths in the USA happen in autos. The Nationwide Climate Service’s flood security marketing campaign is named “flip round, don’t drown” for good cause. It could actually take as little as one foot of shifting water to carry up a car and carry it downstream. It’s virtually unattainable to inform how deep the water is earlier than you’re already within the water and it’s too late, and it’s even tougher to inform if the highway continues to be there or if the floodwaters washed it away.