Cold front brings passing showers overnight

Published: Friday, August 11, 2017 @ 4:34 AM
Updated: Friday, August 11, 2017 @ 11:00 PM

5 Day Forecast with Chief Meteorologist Eric Elwell

Rain and storms will taper off with clearing expected overnight, Storm Center 7 Chief Meteorologist Eric Elwell said. Temperatures will drop into the lower 60s by morning.

QUICK-LOOK FORECAST

  • Perseid Meteor Shower peaks this weekend
  • Cooler to start the weekend
  • Dry weather for most of next week

RELATED: WHIO Interactive Radar 

5-Day Forecast with Meteorologist Brett Collar

Perseid Meteor Shower: The Perseid meteor shower will peak this weekend. If skies can clear enough, some will be visible overnight, mainly between midnight and dawn. You'll need to get as far away from city lights as possible and give yourself at least 20 to 30 minutes for your eyes to adjust to the darkness and become more sensitive to seeing the stars and meteors. You could see as many as 30 to 50 per hour. Just look up and toward the northeastern sky.

Perseid Meteor Shower

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DETAILED FORECAST

Saturday: Skies will become mostly sunny after any fog burns off early. Some scattered clouds will develop during the afternoon. Highs will be in the upper 70s.

RELATED: Sky Witness 7 

Sunday: Expect partly cloudy skies and temperatures hovering around 80 degrees during the afternoon.

Monday: Partly cloudy skies will start the workweek with highs in the lower 80s.

Tuesday: Lots of sunshine is in the forecast with highs holding in the lower 80s.

Wednesday: Expect a mix of sun and clouds with increasing humidity. It also will be warmer with highs in the middle 80s.

Local power outages due to rain showers

Published: Tuesday, October 24, 2017 @ 12:16 AM
Updated: Tuesday, October 24, 2017 @ 2:16 AM

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Thinkstock

RELATED: School and Business Closings 

There are a few counties with a substantial amount of people without power due to the overnight inclement weather.

RELATED: Dayton Interactive Radar - WHIO Doppler 7

According to the Dayton Power & Light website, the counties include:

  • Auglaize: 348 

There are no reported crashes with poles down causing the power outages, per dispatch.

RELATED: County-by-County Weather 

We will continue to monitor the outages and update this page with more details. 

WPAFB Tuesday Weather: Lingering rain showers into afternoon, evening

Published: Tuesday, October 24, 2017 @ 1:10 AM

WRIGHT PATTERSON AIR FORCE BASE—A few showers will linger with us today, said Storm Center 7 Meteorologist Brett Collar.

RELATED: Dayton Interactive Radar - WHIO Doppler 7

This includes the morning, so a few extra minutes would be a good idea on your morning commute. More rain will be likely at times in the afternoon and evening, but more dry time is expected as well.

RELATED: County-by-County Weather 

Highs today will only be in the middle 50s.

Rain moves in today, cooler air arrives this week

Published: Monday, October 23, 2017 @ 3:26 AM
Updated: Monday, October 23, 2017 @ 3:29 PM

More rain is expected Tuesday in the Dayton area

QUICK-LOOK FORECAST

  • Few showers through mid-week
  • Cooler than normal temperatures
  • Windy at times

>> WHIO Doppler 7 Interactive Radar

DETAILED FORECAST

5 Day Forecast with Meteorologist McCall Vrydaghs

TONIGHT: Showers likely, windy and cool with temperatures falling into the 50s this evening, said Storm Center 7 Meteorologist McCall Vrydaghs. Showers will taper a bit tonight, but clouds linger. Overnight lows will drop into the middle 40s. Still breezy at times through the night.

Kirstie Zontini

>> 5-day forecast

TUESDAY: Not as soggy as Monday, but a few passing showers are possible at any point during the day. Mostly cloudy, windy and cooler with highs in the lower to middle 50s. Winds may gust over 30 mph during the afternoon. Mainly dry with broken clouds Tuesday night. Windy and cold with lows in the upper 30s. Wind chills early Wednesday may be near freezing.

Kirstie Zontini

WEDNESDAY: A cold morning with temperatures in the 30s. Mostly cloudy through the day with the slight chance of a passing shower, mainly in the northern Miami Valley. It will be the coolest day of the week with highs ranging from the upper 40s to low 50s.

>> County-by-County weather forecast

THURSDAY: Areas of patchy frost to start the day with temperatures in the 30s. Lots of sunshine for the afternoon and a wind shift out of the south will help temperatures to climb to near 60 degrees for the afternoon.

FRIDAY: Dry to start Friday with increasing clouds through the day. A cold front will bring the chance of some showers into the evening. Highs for the day into the upper 50s.

SATURDAY: Some showers may linger to start the day, then drying into the afternoon. A chilly day and breezy with morning temperatures in the 30s and highs in the upper 40s.

Elwell: Don’t count on an easy winter

Published: Monday, October 23, 2017 @ 11:23 AM

Chief Meteorologist Eric Elwell explains what technically classifies as a blizzard.

Up until today it may have been hard to realize that winter is now less than 60 days away. Our temperatures have been well above average for most of autumn with just a few brief cool spells.

This has led many people to believe that we are in for quite a payback for this nice weather this winter or we may be in for a quiet winter. Well, the outlook is in, and I wouldn’t count on an easy winter.

»WEATHER: Get the latest Storm Center 7 forecast

First, let’s look at what will likely be the main players this winter. It is a term you have likely heard before and likely will hear a lot more of in the coming weeks. Yep, La Niña appears to be developing and there is up to a 65 percent chance it will hold or get stronger as we head into the winter.

Just a refresher, La Niña is a term given when sea surface temperatures across the equatorial Eastern Central Pacific Ocean are lower than normal by 3 to 5 degrees Celsius. Such a contrast in ocean water temperature has corresponding influences on the atmosphere and jet stream patterns across North America. Typically, during La Niña phases, the jet stream pattern across the southern half of the United States becomes very active, supplying lots of moisture across the region. The northern branch of the Jet Stream also can reach farther south and occasionally phase with the southern branch. This phasing can lead to a stormy weather pattern, especially across the Midwest, Great Lakes into New England.

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Because of the development of La Niña, the forecast for the upcoming winter is for above normal precipitation across much of our region including right here in the Miami Valley. So now the question is, can we expect more snow than normal? The answer to this is a bit trickier, because while a more active southern jet stream can bring us more frequent and bigger storm systems, it can also bring warmer air farther north, leading more to a threat of heavy rain or ice.

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Temperature patterns for this coming season will be dependent on several factors including how far north the southern branch of the jet stream can shift. But there are other key factors we will closely be monitoring which are a bit more difficult to predict beyond the short term. One of those is what we call the Arctic Oscillation. This has to do with the circulation patterns around the North Pole, more precisely known as the Northern Atlantic Oscillation (NAO) which more directly influences weather patterns across the eastern United States. During a negative phase of the NAO, westerly winds across Canada weaken, allowing arctic air to build in the region and get even colder. This cold air many times will get forced southward into the United States.

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During La Niña years, there appears to be an impact on how far south intrusions of arctic air building in Canada can move. Because of our latitude here in the Miami Valley, we are still far enough north that we will likely see near normal temperatures, although it appears there will be times with the southern jet stream may send temperatures above normal.

Okay, so enough of the mumble-jumble meteorology stuff… here is the bottom line of what we are expecting.

First, thanks to above normal temperatures over the fall, water temperatures of the Great Lakes are also above normal. That will likely mean intense lake effect snows across the region. While we normally don’t have major snow squalls in the Miami Valley from Lake Effect Snow, the wind flow off of Lake Michigan can typically lead to light snow accumulations in the area and at times, lead to brief white-out squalls which are responsible for many of the winter weather related traffic accidents. It is important to note that with the recent warmth, any snowfall prior to December would likely melt quickly due to warm ground temperatures.

Using analog data to help in forecasting (looking at past years when fall conditions were similar to how they are now), our StormCenter 7 team believes our winter may be similar to that of the 2005-2006 winter. Just to refresh what happened that winter, we saw a quick, somewhat harsh start to winter followed by a mid-winter (January) warm-up. After a relatively quiet period, several big storms during the last month of winter brought a wintry mess across the region.

While this winter is expected to be busier than that of the last couple of winters, it likely will not be as extreme as the “polar vortex” winters we experienced a several years ago. If the current pattern remains similar to that of 2005, we will likely have a mid-winter break from any extreme cold before blasts of cold and snow return to wrap up the season. Stay tuned!

Eric Elwell is WHIO StormCenter 7 Chief Meteorologist. Contact him at eric.elwell@coxinc.com or follow him on Facebook and Twitter.