20250429 Potential Severe Wx

Thomas Breckel
Apr 29
3 min read

April 29, 2025 – Severe Weather Threat for Clinton County, Ohio

ENHANCED Risk for severe weather (ranked 3 out of 5) this afternoon & evening.

Clinton County residents should prepare for a dynamic and potentially hazardous weather day. A powerful frontal system is moving through the Midwest, bringing an elevated threat of severe thunderstorms across our area this afternoon and evening.

Threat Overview

As of this morning, the National Weather Service and the Storm Prediction Center are highlighting a significant risk for severe weather across Southwest Ohio, including Clinton County. The threat stems from a strong convective line to our west that is expected to organize further as it pushes eastward. Atmospheric conditions are supportive of damaging wind events and may even allow for the development of isolated supercells capable of producing tornadoes.

Threats & Risk Levels for Clinton County

Hazard	Risk Level	Definition and Impact
Severe Thunderstorms	Likely – 70–89%	Numerous severe thunderstorms are expected across the region.
Damaging Wind Gusts	Likely – 70–89%	30–45% chance of gusts exceeding 58 mph within 25 miles; downed trees, power outages.
Large Hail	Possible – 50–69%	15–30% chance of 1" or larger hail; minor property and vehicle damage possible.
Tornadoes	Unlikely – 30–49%	Marginal (5%) risk; a brief tornado cannot be ruled out.
Lightning	Almost Certain – 90–100%	Widespread lightning expected; a safety hazard for outdoor activities.
Flash Flooding	Rare – 10–29%	Isolated flash flooding possible in areas with poor drainage or rapid runoff.
Non-Thunderstorm Wind	Unlikely – 30–49%	Breezy conditions may affect high-profile vehicles and unsecured outdoor items.

Timeline

12 PM – 4 PM: First round of storms possible. Watch for isolated cells or the beginning edge of a larger system.
4 PM – 9 PM: Primary risk window. Expect widespread storm activity with damaging wind potential and embedded hail or tornado risks.
After 9 PM: Threat slowly diminishes, but isolated storms and rainfall may linger.

Graphical Hazardous Weather Outlook Graphics

ENHANCED Risk: Numerous severe thunderstorms possible. — **ENHANCED Risk**: Numerous severe thunderstorms possible.

MARGINAL Risk: Up to 5% chance of a tornado within 25 miles of your location. — **MARGINAL Risk:** Up to 5% chance of a tornado within 25 miles of your location.

ENHANCED Risk: 30-45% chance of severe wind gusts (58 mph or greater) within 25 miles of your location. — **ENHANCED Risk**: 30-45% chance of severe wind gusts (58 mph or greater) within 25 miles of your location.

SLIGHT Risk: 15-30% chance of 1" or larger hail within 25 miles of your location. — **SLIGHT Ris**k: 15-30% chance of 1" or larger hail within 25 miles of your location.

SIGNIFICANT Risk: Widespread thunderstorms with dangerous cloud-to-ground lightning expected. — **SIGNIFICANT Risk**: Widespread thunderstorms with dangerous cloud-to-ground lightning expected.

LIMITED Risk: Isolated flash floods possible. Most flooding will be localized to areas that can experience rapid runoff with heavy rainfall. — **LIMITED Risk**: Isolated flash floods possible. Most flooding will be localized to areas that can experience rapid runoff with heavy rainfall.

Recommended Actions for Clinton County Residents

Visit cc-ema.org/prepare and reference keywords SEVERE, POWER, and TORNADO.
Stay Informed: Monitor local alerts via NOAA Weather Radio, the Clinton County EMA text system, or your preferred weather app.
Secure Outdoor Items: High winds may cause lawn furniture, decorations, or trash bins to become hazards.
Charge Devices: Power outages are possible. Ensure mobile devices and power banks are fully charged.
Know Your Safe Place: Identify a sturdy interior room on the lowest floor, away from windows, in case a warning is issued.
Avoid Flood-Prone Areas: Never drive through flooded roads, especially near Sabina, Port William, or along Todds Fork.
Delay Outdoor Activities: Widespread lightning is expected. Stay indoors once storms approach.
High-Profile Vehicle Caution: Use extra caution when traveling in large vehicles, especially on I-71 and open county roads.

Final Note

Today’s setup carries a higher risk than typical spring storms. The presence of strong winds aloft and instability in the atmosphere may allow severe storms to organize quickly. Clinton County EMA will continue monitoring the situation and issue alerts as needed.

📎 For more information and updates: National Weather Service Wilmington Briefing

Stay weather-aware today and be ready to act. A few minutes of planning now could make all the difference later.

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