Another round of storms on Sunday

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MIAMI VALLEY, Ohio (WDTN) –

6:35 P.M. The Severe Thunderstorm Watch is canceled for the Miami Valley. The line of storms weakened as it moved across the Miami Valley. We will see a break from the rain overnight. Storms return early Sunday morning. A chance for Strong to Severe weather is possible tomorrow late afternoon between 4 p.m. and 9 p.m. 

2:30 P.M. A  Severe Thunderstorm Watch is in effect across the Miami Valley until 9 pm Saturday night.

There is the potential for a few strong to severe thunderstorms in the afternoon into the evening.

Watches are in effect for Auglaize, Butler, Champaign, Clark, Darke, Greene, Logan, Mercer, Miami, Montgomery, and Preble counties.

Damaging winds and large hail are the primary severe weather threats.

Additional showers and thunderstorms are expected on Sunday as well, with damaging winds and large hail as possibilities.

Heavy rainfall potentially leading to flooding issues is a concern.

4:00 P.M. Radar Analysis: A line of strong thunderstorms is moving across the Miami Valley north of I-70. The main threats are 50 mph wind gusts that can knock around tree branches and blow down unsecured patio furniture or lawn decorations. Pea-sized hail is also possible. Rainfall is very heavy and will create localized areas of flooding. Low lying roadways, roadside ditches, and small streams will quickly fill. A scattered cluster of storms is trying to organize south of the main line that may impact the rest of the Miami Valley. These storms outside of the line may have a greater risk for producing severe weather.

This line of thunderstorms is part of a Mesoscale Convective Vortex. This is a small area that acts similar to a low-pressure system. The result is usually a bow echo squall line like we are seeing today. These are known for producing gusty winds. A small isolated tornado is possible. 

Temperatures are warmer than yesterday ahead of this system. A closer look shows temperatures dropping where there is rain. This temperature difference will help fuel these thunderstorms and keep the line moving east, northeast. 

We have another chance for severe weather as a cold front moves in from the NE tomorrow. 

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