Friday storm brings threat for icing before transition to snow

Published: Thursday, January 11, 2018 @ 1:43 AM

Meteorologist Kirstie Zontini looks at the wintry mix and snow possible with our next system.

Despite being less than 36 hours away from the upcoming storm, there is still a wide disagreement on the impact of this system.

This has led to unusually low levels of confidence in snowfall amounts. It is because of the low confidence why our friends at the National Weather Service in Wilmington have held off on issuing any winter storm watches despite some of the surrounding offices doing so.

>> WHIO Doppler 7 Interactive Radar

That all being said, here is what we are concerned about — it appears the incoming cold air will likely "undercut" the warm air Friday, causing precipitation to change from rain to freezing rain. My concern is a lot of the higher-resolution models which can make up on this type of set-up are increasing the threat for icing.

>> Winter storm to move in quicker, move out faster

On the positive side, we will have a warmer ground than in days past to start with, so the icing may be delayed through the day Friday. The negative is once we get closer to sunset and temperatures continue to drop, that icing may become much more of an issue. 

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Here is my other concern — even though snowfall amounts seem to be dropping on the latest models, even a few inches of wet snow onto tree limbs and/or power lines coated in ice could become another issue all together. Plus, ice underneath snow creates a unique challenge to road treatment. 

Also, there are still a few high-resolution models that are sticking with the higher snowfall amounts (6+ inches), so I still don't think we can rule out higher amounts.

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But for now — I am thinking 2-4 inches is most likely, but that is on top of some ice. Combine that with gusty winds developing Friday night into Saturday and the impact of this storm will be just the same as a bigger snow event. 

Bottom line - be ready for a typical Ohio winter storm.

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Clear skies overnight; threat for Memorial Day weekend storms

Published: Wednesday, May 23, 2018 @ 3:30 AM
Updated: Wednesday, May 23, 2018 @ 5:10 PM

Humidity and chances for storms return for memorial weekend.

Skies will be clear with comfortable conditions as temperatures drop into the middle 50s, Storm Center 7 Chief Meteorologist Eric Elwell said.

QUICK-LOOK FORECAST

  • Quiet and comfortable overnight
  • Air Quality Advisory Thursday for Butler, Warren counties
  • Memorial Day weekend: Heat, humidity, threat for pop-up storms

>> WHIO Live Doppler 7 HD Interactive Radar

DETAILED FORECAST

>> Air Pollution Advisory Thursday for Butler, Warren counties

Thursday: Lots of sunshine is expected with temperatures rebounding back into the lower 80s. Humidity levels will remain low. An Air Quality Advisory is issued for Thursday for Butler and Warren counties in anticipation of high ozone levels.

An Air Quality Advisory is in place for Thursday in Butler and Warren counties

>> Tropical System may form over Memorial Day Weekend

Friday: Mostly sunny skies are in the forecast but temperatures will heat up into the middle 80s.

>> What is the UV index and how do you protect your skin?

>> County-by-County Weather

Saturday: The heat and humidity will begin to build with partly cloudy skies. There is a chance for some afternoon and evening pop-up thunderstorms. Highs will be in the upper 80s.

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Sunday: It will be quite warm and humid with partly cloudy skies and a chance for pop-up thunderstorms.

>> 5-Day Forecast

Memorial Day:  Expect it to be partly cloudy and humid Monday with a continued chance of mainly afternoon/evening pop-up storms. Highs will be in the upper 80s.

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When to spot International Space Station flyover in Dayton this week

Published: Tuesday, May 22, 2018 @ 6:28 AM
Updated: Wednesday, May 23, 2018 @ 4:40 AM

Meteorologist Kirstie Zontini tells you where to look to see the ISS.

There will be several chances to see the International Space Station fly over Dayton this week, said Storm Center 7 Meteorologist Kirstie Zontini.

>> WHIO Doppler 7 Interactive Radar

Thursday the ISS will appear in the west/southwest sky at 9:25 p.m. It will pass by in six minutes reaching up 53 degrees above the horizon before disappearing in the northeast sky.

>> SKYWITNESS7

The space station was also visible Tuesday night and early Wednesday.

>> Mark your calendar for these 2018 meteor showers

The International Space Station will look like a bright star or plane moving across the sky except it won't flash or blink. 

The clouds should break even more by Wednesday morning so get out and take a photo.

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Increasing threat for showers through Friday

Published: Thursday, May 17, 2018 @ 3:21 AM
Updated: Thursday, May 17, 2018 @ 11:25 PM

Chance for passing showers and storms return today, especially south of I-70.

Patchy light rain and drizzle will taper off; some patchy fog is possible overnight, Storm Center 7 Chief Meteorologist Eric Elwell said. Temperatures fall into the lower 60s.

QUICK-LOOK FORECAST

  • Showers redevelop Friday
  • A bit cooler Friday
  • On and off storms into the weekend 

>> LIVE Doppler 7 Interactive Radar

DETAILED FORECAST

Friday: Expect mostly cloudy skies with occasional showers. A rumble of thunder is possible but severe weather is not expected. Highs will hold in the lower 70s.

>> Pollen very high this week 

Saturday: Expect a mix of sun and clouds and a chance for passing showers and storms. Highs will rebound to near 80 degrees.

Sunday: The day will start mainly dry under partly cloudy skies. Clouds will increase late in the day with scattered showers and storms becoming likely by evening. One or two stronger storms will be possible. Highs will climb into the middle 80s.

>> 5-Day Forecast

Monday: Expect a chance for showers and storms with highs in the lower 80s.

Tuesday: Partly sunny skies are expected with only a slight chance for a lingering shower. Highs will top out near 80 degrees.

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Chance for showers and storms tonight, into coming week

Published: Saturday, May 12, 2018 @ 5:19 AM
Updated: Saturday, May 12, 2018 @ 8:20 PM

We once again have the chance to see a few showers and storms in the Dayton area on this Mother's Day.

A few passing showers are expected this evening, Storm Center 7 Meteorologist Brett Collar said.

QUICK-LOOK FORECAST

  • Chance for showers, storms tonight, into coming week
  • Mother’s Day won’t be all-day rain event
  • Warm, muggy conditions all next week

>> LIVE Doppler 7 Interactive HD Radar

5 Day Forecast with Meteorologist Brett Collar

DETAILED FORECAST

Overnight: While the chance for storms overnight is not all that high, it can’t be ruled out, Storm Center 7 Meteorologist Brett Collar said. However, it looks like lost of the storms will stay to the north. Temperatures overnight will drop to near 60 degrees. Areas north of Interstate 70 will fall into the 50s.

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Mother’s Day: The chance for showers and storms returns Sunday. It won’t be rainy all day, but there will be showers and storms at times. It’ll be warm and muggy again with highs in the lower 80s.

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Monday: Temperatures get back into the middle 80s with the chance for more showers and storms. Partly cloudy skies are expected.

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Tuesday: With this unstable boundary still with us most of the week, the chance for showers and storms continues. However, rain won’t last all day. Highs will be in the middle to upper 80s.

>> County-by-County Weather

Wednesday: A pretty good chance for showers and storms exists with highs in the lower to middle 80s.

Thursday: Another warm and muggy day is expected with highs in the lower 80s. More showers and thunderstorms are possible.

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