Multi-Threat Event: The primary concerns begin Wednesday night with severe thunderstorms capable of producing tornadoes, damaging winds (up to 50 mph gusts forecasted Thursday), and large hail.
Flooding Risk: Following the initial severe threat, prolonged periods of heavy rainfall are expected from Thursday through Sunday morning, leading to a significant risk of flash flooding and river flooding. Rainfall totals could reach 4-8 inches in some areas.
Timing: The highest risk for severe storms, including tornadoes, is expected late Wednesday night into early Thursday morning (approx. 9 PM - 5 AM, moving west to east).
Affected Areas: The Louisville metro area, Cincinnati Tri-State (including Southeast Indiana, Northern Kentucky, and Ohio) are under threat. The Storm Prediction Center (SPC) has issued Enhanced (Level 3/5) and even Moderate (Level 4/5) risks for parts of the region Wednesday night, followed by a Slight Risk (Level 2/5) on Thursday.
Why this matters: This weather pattern poses a serious risk to safety and property. Potential impacts include tornado damage, widespread wind damage, power outages, dangerous travel conditions, and significant flooding, particularly in low-lying areas and near waterways.
The weather setup involves a potent storm system moving into the Ohio Valley.
Wednesday Night: Expect a line of strong to severe thunderstorms to develop and move across the region. The SPC highlights an Enhanced Risk for much of the area, with a focused Moderate Risk in parts of Southeast Indiana, indicating a higher confidence in severe weather, including the potential for strong tornadoes and widespread damaging winds.
Thursday: While the initial line pushes east, showers and thunderstorms will continue. A Wind Advisory is in effect from 10 AM to midnight for gusts up to 50 mph outside of thunderstorms. Additional storms may redevelop in the afternoon and evening, carrying a Slight Risk for severe weather (damaging winds, hail, isolated tornadoes).
Friday - Sunday: The system stalls, leading to persistent rain and thunderstorm chances. A Flood Watch is in effect for the Tri-State area through Sunday morning due to the potential for 4-8 inches of rain, raising concerns for flash flooding and rising creeks, streams, and rivers.
Who This Affects Most: Residents in mobile homes or areas prone to flooding face the highest risks. Individuals living near rivers, streams, or in low-lying urban areas should be particularly vigilant. Commuters may face hazardous travel conditions.
How to Prepare:
Monitor local forecasts and have multiple ways to receive weather alerts (NOAA Weather Radio, reliable weather apps, local news alerts like LENSAlert in Louisville - text "LENSAlert" to 67283).
Have a severe weather safety plan, especially for tornadoes. Know your safe place.
Secure outdoor items that could be blown away by high winds.
Prepare for power outages: charge devices, have flashlights, extra batteries, and fuel for generators if applicable.
Clear nearby storm drains of debris to help mitigate local flooding.
Never drive or walk through floodwaters. Turn Around, Don't Drown®.
Q: What are the biggest threats with this system?
A: Initially (Wednesday night), the main threats are tornadoes, damaging wind gusts, and large hail. From Thursday through the weekend, heavy rainfall leading to flash flooding and river flooding becomes a primary concern, along with continued high winds on Thursday.
Q: When is the most dangerous period?
A: The highest likelihood for tornadoes and damaging winds is overnight Wednesday into early Thursday morning. The risk of flooding will increase from Thursday onwards.
Q: How can I stay safe?
A: Stay informed through reliable sources, have a safety plan ready, prepare for power outages and flooding, and heed all warnings issued by the National Weather Service and local officials.
This is a potentially dangerous, multi-day weather event requiring your attention.
Ensure you can receive warnings, especially during overnight hours.
Prepare your home and family for severe thunderstorms, high winds, power outages, and potential flooding.
Check on neighbours, especially the elderly or vulnerable.
Avoid unnecessary travel during the peak storm periods and never attempt to cross flooded roads.
How are you preparing for this severe weather event? Let us know!
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Source Data: Compiled from WLKY, WCPO, WAVE 3 News reports, National Weather Service, Storm Prediction Center.
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