Some could see frost early Tuesday

Published: Monday, October 16, 2017 @ 6:34 AM

Temperatures drop into the 30s Tuesday AM, Meteorologist Kirstie Zontini talks about possible impacts.

Clear skies, calm winds and a  temperature drop will allow for the chance for frost this week, said Storm Center 7 Meteorologist Kirstie Zontini.

>> Patchy frost possible, dry conditions this week

Temperatures this fall have been warmer than normal. From September through October, there have only been ten nights in the 40s. Clear skies and calm winds will enhance the chance for temperatures to drop into the mid to upper 30s Monday night. This also can allow some patchy frost to develop.

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>> WHIO Doppler 7 Interactive Radar

Keep in mind, the air temperature where measurements are taken is a few feet above the ground so often the surface or ground temperatures can be colder. On average our first freezing temperatures of fall occur around October 22.

>> Venus and Mars visible this week

Any plants or pumpkins should be covered or brought inside if you are worried about minor damage.

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Weather Wise Q&A 

Published: Wednesday, July 18, 2018 @ 8:10 PM
Updated: Thursday, July 19, 2018 @ 12:45 AM

Live Doppler 7 Radar is powerful enough to detect rain and storms, and even insects and other 'air traffic'. Because of the incline on Interstate 75 from West Carrollton City to Miamisburg, our radar, located in Germantown, can actually pick up cars and trucks traveling north and southbound on that ...

Have you ever pulled up the radar on your phone or watched on TV and see what appears to be precipitation on radar when the sun is out? 

You may think there is something wrong with the radar, but actually, there is not. You are seeing ground clutter. 

Doppler Radar is so sensitive it can pick up insect and bird migrations and low-level air traffic. 

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Our Live Doppler 7 Radar, located near Germantown, actually detects traffic on Interstate 75 between Miamisburg and West Carrollton. 

Storm Center 7 Chief Meteorologist Eric Elwell says the reason is because of the elevation change of the interstate between these locations and the position of WHIO’s radar. Because the elevation increases from north to south in this area, the cars actually come into the radar’s detection range. 

The radar sees the cars as very heavy precipitation. Elwell says that during active weather, the Storm Center 7 team can filter out the traffic or “ground clutter” noise so that storms can easily be detected.

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Mars visible in night sky: How and when to see it

Published: Wednesday, July 18, 2018 @ 6:47 AM

Meteorologist Kirstie Zontini shows you how to find Mars.

Mars is even brighter than Jupiter in the night sky right now.

This month through early August, Mars and Earth happen to be very close. Right now, the two planets are at the second closest point they’ve been in nearly 60,000 years.

>> The International Space Station will fly over Dayton this week

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When Mars is fainter in the sky, it appears more reddish. When it’s closer and brighter, the color appears more orange.

>> LIVE Doppler 7 HD Interactive Radar

This week, Mars is rising at around 10 p.m. over the Miami Valley, and by the end of July it will be rising as the sun goes down, around 8:30 p.m. Mars will be very visible on clear nights fairly low in the southeastern sky. 

>> SkyWitness7

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Some rain to start the week

Published: Sunday, July 15, 2018 @ 5:01 AM
Updated: Sunday, July 15, 2018 @ 9:58 PM

More rain to start the work-week in the Dayton area.

There is a change for a few isolated showers/storms this evening, according to Meteorologist Brett Collar. Rain is more likely to appear on Monday, and it will not be as hot this coming week.

>>Mercury and Venus visible

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  • Few isolated showers/storms this evening
  • More rain likely Monday
  • Not as hot this week

>>WHIO Doppler 7 Interactive Radar

Tonight: More dry time is expected overnight. It’ll be a mild and muggy night with temperatures dropping into the lower 70s.

Monday: More showers and storms are likely, especially in the afternoon and evening as a cold front moves through. It’ll be warm again with highs in the middle 80s.

>>LISTEN: Cloudy with a Chance of Podcast: A podcast for weather fans

Tuesday: Aside from maybe a pre-dawn shower, it looks like we should be dry. Decreasing clouds are expected with highs around the middle 80s.

Few storms this evening in the Dayton area.

Wednesday: We top out in the lower 80s under mostly sunny skies.

Thursday: A nice day is on tap for your day. Mostly sunny skies with highs in the lower to middle 80s.

Friday: The chance for showers and storms returns with highs around the middle 80s.

>>County-by-county weather

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Chance of rain increasing for beginning of work week

Published: Saturday, July 14, 2018 @ 5:29 AM
Updated: Saturday, July 14, 2018 @ 9:55 PM

Mild this evening, chance for rain Sunday in the Dayton area.

Mostly sunny skies with a high around 92. With the humidity, we’ll see heat indices somewhere between 95 to 100 degrees, said Storm Center 7 Meteorologist Brett Collar

>>WHIO Doppler 7 Interactive Radar


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  • Heat Index 95 to 100 degrees today and tomorrow
  • Rain chances begin tomorrow through Tuesday morning
  • Heat and humidity will drop off by Tuesday

>>Mercury and Venus visible

Tonight: More clouds are expected overnight tonight. It’ll be a mild and muggy night as temperatures drop into the lower 70s.

>>County-by-county weather

Sunday: A few clouds are expected to start your day, and there is the slight chance for some light rain early in the day. However the better chance to see a few pop up showers and storms will come later in the afternoon. It’ll be a hot day again with highs in the upper 80s.

Monday: The best chance for rain is today, as a cold front moves through. Showers and storms are expected, some of which could be strong to severe. Highs will be in the middle to upper 80s.

>>LISTEN: Cloudy with a Chance of Podcast: A podcast for weather fans

Tuesday: A pre-dawn shower can’t be ruled out, aside from that it should be a dry day with decreasing clouds. Highs will be in the middle 80s.

>>What’s urban heat island effect and how is it impacting downtown Dayton?

Wednesday: Sunshine and pleasant temperatures return. Highs will be in the lower 80s.

5 Day Forecast with Meteorologist McCall Vrydaghs
Thursday: Mostly sunny skies are on tap for your day. Highs will be in the lower to middle 80s.

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