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Partly cloudy, hot and muggy

Miami Valley , Whitewater Valley, and the I-71 corridor of Ohio/Indiana:

What are pulse storms?
These storms are commonly known as popcorn storms. In the summer months, surface temps warm significantly fast and this rising motion of the heat through cooler air aloft can allow cumulus clouds to grow to taller levels eventually hitting what is known as a the equilibrium level. An area where a cloud is forced to stop growing due to drier air and cold air aloft, causing the warm air to cool and dry to the same temp as the air surrounding it. This area cause the cloud to condense allowing for rain to begin to fall due to complete saturation of the air or a relative humidity of 100%. Popcorn storms typically last for short periods because they are being caused by nothing more than rising motions of air and not a strong front of any sort. When these storms begin to die they can cause a strong downdraft or crashing of cool air to the surface. This cool air rushes, after hitting the ground, to an area outside the storm which is typically warmer causing that air to displace and once again rising to aloft making for another storm to pop near by. Some of these storms can cause damaging winds know as micro-burst or macro-burst depending the scale of the area they effect. This is nothing more than straight line winds that rush out in a star shaped pattern outward from the center of where the downdraft occurs.

Muggy air sticks with us today and tomorrow. Temps today soar close to 90 if not a a degree or two higher. Drink plenty of fluids when outdoors today as heat indices approach 100. Otherwise expect partly cloudy skies today and light winds. An isolated pop up storm cannot be ruled out especially SE. Tomorrow storms move in by afternoon, a few could be severe with damaging winds and heavy rains. Thursday and Friday skies become mostly sunny and humidity drops once again as an upper level low in the great lakes digs a trough into the Eastern part of the US. Pleasant weather continues through early Saturday before another low develops Saturday night and Sunday bringing our next round of humidity and storms.

Long range:
Scattered showers and storms continue into early next week before things dry out.

The following is the seven day forecast for the Dayton metro area and a 50 mile radius around it. Other metro areas like Columbus, Cincinnati, and Portsmouth are not included. For those areas please request a separate

Today 7/22 - Partly cloudy, a slight chance of a thunderstorm, best chance SE. Winds SW 5 mph. High 90.

Tonight 7/22 - Partly cloudy. Winds SW 5 mph. Low 70.

Wednesday 7/23 - Partly sunny becoming mostly cloudy, scattered showers and thunderstorms. Winds W 5 to 15 mph. High 81. Chance of rain 60%.

Wed night 7/23 - Partly cloudy, a chance of scattered showers and thunderstorms early. Winds N 5 to 10 mph. Low 58. Chance of rain 40%.

Thursday 7/24 - Partly cloudy, becoming mostly sunny. Winds N 5 to 10 mph. High 76.

Thur night 7/24 - Mostly clear. Low 57.

Friday 7/25 - Mostly sunny. High 80.

Fri night 7/25 - Mostly clear. Low 58.

Saturday 7/26 - Mostly sunny. High 83.

Sat night 7/26 - Mostly cloudy, a chance of scattered showers and thunderstorms. Low 65. Chance of rain 30%.

Sunday 7/27 - Mostly cloudy, scattered showers and thunderstorms. High 80. Chance of rain 60%.

Sun night 7/27 - Mostly cloudy, a chance of scattered showers and thunderstorms. Low 63. Chance of rain 30%.

Monday 7/28 - Mostly cloudy, a chance of scattered showers and thunderstorms. High 80. Chance of rain 30%.

Mon night 7/28 - Mostly cloudy, a chance of scattered showers and thunderstorms. Low 62. Chance of rain 30%.

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