Current Radar, Severe Weather Watches and Warnings
- Several threats are in play over parts of the South and Ohio Valley.
- Severe thunderstorms are possible through early Monday morning.
- Damaging thunderstorm winds and a few tornadoes are possible.
- Flash flooding and some river flooding is also a serious threat.
Severe thunderstorms, including a few tornadoes, and flooding rain is possible in parts of the South and Ohio Valley through early Monday morning as February exits with a bang and the calendar turns to March.
Flash flooding has already become dangerous in parts of the Ohio Valley and Appalachians.
Widespread flooding, including flooding of homes and businesses and major highways, was reported in Murray, Kentucky, near the Tennessee state line about 90 miles west-northwest of Nashville. Rain gauges in the area measured 3 to 4 inches of rain over the past 24 hours ending Sunday morning.
Sunday morning, two people were stranded on top of a flooded vehicle in Teays Valley, West Virginia, roughly halfway between Charleston and Huntington, according to a local fire chief.
Another swift water rescue was reported south of Huntington, West Virginia, according to the National Weather Service.
Deep moisture ahead of an advancing cold front and jet-stream energy are all teaming up to produce this double threat of flooding and severe thunderstorms through early Monday morning.
(MORE: March Weather Has a Stormy Reputation)
Let's take a closer look at each threat.
Flood Threat
The heaviest additional rain will fall through Monday morning in parts of Kentucky, West Virginia, Tennessee, Arkansas, northern Louisiana, northern Mississippi and northern Alabama. Some of these areas may pick up an additional 3 inches of rain or more.
Rainfall Outlook
(This should be interpreted as a broad outlook of where the heaviest rain may fall.)This additional rain, on top of what has already fallen, is likely to trigger additional flash flooding, particularly in hilly terrain and at least some minor to locally moderate river flooding.
The National Weather Service has issued flood watches from the lower Mississippi Valley to the Appalachians.
NOAA's Weather Prediction Center issued a moderate risk of excessive rainfall - their second highest risk level - through early Monday morning in much of Kentucky, northern Tennessee and parts of West Virginia.
According to NOAA, atmospheric moisture values - what meteorologists call precipitable water - were near record values for late February in the Ohio Valley, two to three times the average.
By Monday, a cold front will dry out the Ohio Valley and Appalachians, but areas of locally heavy rain could linger in the South through Wednesday as another wave of low pressure forms along the east-to-west oriented frontal boundary in the Deep South.
(MAPS: 7-Day Forecast)
Severe Threat
There is also a threat of severe thunderstorms on the table through early Monday morning.
Humid air by end of February standards, with dew points in the mid-60s, is in place from Texas to the Tennessee Valley. With an active jet stream providing wind shear, the stage is set for at least some severe weather in parts of the South.
Scattered severe thunderstorms are expected through the evening from parts of northeast Texas into southeast Oklahoma, Arkansas, northern Louisiana, northern Mississippi, Tennessee, northern Alabama and southern Kentucky.
Damaging thunderstorm winds and a few tornadoes are possible in these areas. Some large hail is also possible.
(MORE: Will La Niña Trigger a Dangerous Severe Weather Season)
While thunderstorms are possible in the Deep South Monday and Tuesday, the severe weather threat those days appears to be minimal.
Make sure you have multiple ways of receiving severe weather alerts that can wake you up at night, including your smartphone and NOAA weather radio. Make sure your smartphone is charged and alerts are turned on.
These alerts could provide the precious minutes needed to move quickly to shelter and could save your life.
We have already had two deadly tornadoes in the South so far in 2021 that did not occur in large severe weather outbreaks. Both also occurred at night.
The Weather Company’s primary journalistic mission is to report on breaking weather news, the environment and the importance of science to our lives. This story does not necessarily represent the position of our parent company, IBM.
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February 28, 2021 at 11:16PM
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Severe Thunderstorms, Including a Few Tornadoes, and Flooding Rain Possible in Parts of South, Ohio Valley | The Weather Channel - Articles from The Weather Channel | weather.com - The Weather Channel
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