Miami Valley , Whitewater Valley, and the I-71 corridor of Ohio/Indiana:
Thunderstorms and heavy rain showers will increase in coverage moving into the Western viewing area late evening and lasting until 1am in the Eastern viewing area. Some of these thunderstorms will be capable of damaging winds, small hail, and even a isolated tornado cannot be ruled out. The strongest storms with the greatest tornado threat will likely be SW of our region due to less snow cover and warmer temperatures. Snow cover keeps the ground from warming to much and can prohibit thunderstorms from growing to strong. However the wind field within this low pressure is extremely tight meaning any thunderstorms that forms will have to do little work to tap and bring some strong winds down to the surface. Gust with the thunderstorms could top 55 pm for some. Even with out thunderstorms wind fields will support strong damaging wind gust along the front and behind the front early tonight then dying out late. Winds will once again pick up tomorrow and could be stronger at times as the sun heats the ground and causes a great difference in temperature profile from surface to aloft. There is also a flooding threat tonight with any heavy rain that falls on saturated ground from snow melt. Tomorrow will be windy but clear skies will return, however temps will be considerably cooler in the 40s. Saturday will be one more day to enjoy the warmth with temps near 50 and sunshine before a cold front brings the chance of some light snow/rain Saturday night and brings colder air in by Sunday.
A stronger cold front will move through Tuesday night bringing even colder air and the chance for some light snow Tuesday night and Wednesday. Cold air will persist with us through at least next weekend.
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 forecast. Thanks.
Tonight 2/20 - Mostly cloudy, scattered rain showers and thunderstorms before 1am. A few storms may be severe especially SW. Windy. Winds SW 15 to 25 mph, gust to 55 mph possible with thunderstorms, winds W late. Low 36. Chance of precipitation 100%. Rainfall around a half to one inch.
Friday 2/21 - Mostly sunny. Windy. Winds W 20 to 30 mph, gust to 45 mph. High 46.
Fri night 2/21 - Partly cloudy. Breezy. Winds SW 5 to 15 mph, gust to 25 mph. Low 32.
Saturday 2/22 - Mostly sunny. Breezy. Winds SW 10 to 20 mph, gust to 30 mph. High 50.
Sat night 2/22 - Mostly cloudy, a slight chance of snow shower. Winds NW 5 to 15 mph. Low 27. Chance of precipitation 20%.
Sunday 2/23 - Mostly cloudy, a chance of scattered pm rain/snow showers. High 39. Chance of precipitation 30%.
Sun night 2/23 - Mostly cloudy, a chance of scattered snow showers. Low 18. Chance of snow 30%.
Monday 2/24 - Mostly cloudy. High 33.
Mon night 2/24 - Mostly cloudy, a slight chance of scattered snow showers. Low 22. Chance of snow 20%.
Tuesday 2/25 - Partly cloudy. High 32.
Tues night 2/25 - Mostly cloudy, a chance of scattered snow showers. Low 18. Chance of snow 30%.
Wednesday 2/26 - Mostly cloudy. High 28.
Wed night 2/26 - Partly cloudy. Low 11.
Thursday 2/27 - Mostly cloudy. High 22.
Thur night 2/27 - Partly cloudy. Low 9.