What caused the icy, slick commute Thursday morning?

Published: Thursday, March 08, 2018 @ 8:15 AM

A Flash Freeze occurs when there’s a rapid drop in temperatures causing a quick freeze of water already on the ground from rain or melted snow. A flash freeze is different from freezing rain. Freezing rain is when rain hits roads and other surfaces that are at 32 degrees or below and freezes on contact. Ice created by a flash freeze isn’t any slicker than ice from freezing rain or from a gradual temperature drop.

THE SET UP 

A set up of not only snow but also ice led to widespread problems Thursday morning, said Storm Center 7 Meteorologist Kirstie Zontini. Overnight a burst of snow moved across most of the Miami Valley. The fluffy flakes quickly accumulated on the road and grass. What made Thursday morning more dangerous was that the road temperatures were above freezing initially. This allowed some of the snow to melt on contact. Sub-freezing air then led to some ice and slick roads. 

>> Slick spots on area roads after overnight snow

Temperatures overnight had dropped into the 20s. The cold air and light breeze allowed any moisture or slightly melted snow to start to refreeze and ice over. This made for a dangerous commute, especially before sunrise because the roads looked wet. Bridges and overpasses, which are elevated, are exposed to the cold air on the top and bottom of the pavement. Refreeze usually occurs in these spots the fastest. Salting the roads, some sunshine and temperatures climbing above freezing are all ways to improve a dangerous morning drive. 

 >> Semi passenger killed in I-75 crash during white-out conditions

COMMUTE FORECAST 

This afternoon some pop up snow showers are still possible. Winds will also pick up. Wind gusts will range from 25-35 mph out of the west/northwest. This means drivers traveling north or south on I-75 or west on I-70 will feel a more direct impact. High profile vehicles should be careful on the roads today. Leave plenty of space around you in case a car swerves.

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Dayton Air Show forecast: Warm with chance for showers, storms

Published: Thursday, June 21, 2018 @ 5:47 AM

Forecast for the Vectren Dayton Air Show

The chance for rain will be around for the start of the weekend. That means those heading to the Vectren Dayton Air Show will need to be prepared, said Storm Center 7 Meteorologist Brett Collar.

We're also keeping an eye on the heat at times this weekend.

>> Storm Center 7’s Kirstie Zontini flies with U.S. Navy Blue Angels

Saturday: The chance for a few storms will be in the forecast, especially for the first part of the day. Conditions are expected to improve through the day. Highs will be in the upper 70s.

>> WHIO Doppler 7 Interactive Radar

Sunday: It will be a mainly dry day, but a stray shower or storm can’t be completely ruled out. Sunday will be a touch warmer as we see highs in the lower 80s. However, with a lot of concrete at the Dayton International Airport, surface temperatures will be closer to the mid to upper-80s.

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Air show leaders said those coming to the air show this weekend they’ll need to stay hydrated, adding there’s little shade at the airport to protect you from the sun. 

There will be fountains for free water. If anyone does start to feel ill, they should go to one of the EMS tents or to one of the paramedics that will on bicycles.

Full coverage of the Dayton Air Show

>> How to avoid traffic and parking headaches at this weekend’s Dayton Air Show

>> Insider’s guide to the 2018 Dayton Air Show

>> Here’s how Dayton Air Show officials prepare for worst case scenarios

>> F-22 Raptor, Golden Knights to perform at 2018 Vectren Dayton Air Show

>> Blue Angels set to perform in Dayton: Five things to know

>> 13 things you don’t want to miss at the Dayton Air Show this weekend

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Threat for flash flooding through Wednesday

Published: Tuesday, June 19, 2018 @ 4:24 AM
Updated: Tuesday, June 19, 2018 @ 11:30 PM

Flooding on Third Street

Clouds will linger with still a chance for a passing shower or storm overnight. Patchy fog will be possible late in areas that have heavy rain. Temperatures will drop into the lower 70s by morning, Storm Center 7 Chief Meteorologist Eric Elwell said.

>> Man hears ‘boom boom clack’ before tree falls on vehicle

QUICK-LOOK FORECAST

  • On-and-off storms through midweek
  • Locally heavy rain possible
  • Heat to ease into the weekend

>> FLOODING: Know your risks

DETAILED FORECAST

Wednesday: Scattered showers and storms return, but will be more widespread across the southern counties. Outside of the storms, skies will be partly sunny with highs in the lower 80s.

>> LIVE Doppler 7 Interactive HD Radar

>> How to prevent heat-related and life-threatening illnesses during extreme heat

Thursday: Partly sunny skies with a bit less humidity. A passing shower or storm is possible again in southern counties. Temperatures will climb into the lower 80s.

>> Cloudy with a chance of podcast

Friday: Scattered showers and storms spread back across the area with locally heavy rain possible. A few stronger storms are possible as well with highs again in the lower 80s.

Saturday: A chance for showers and storms are expected again. Otherwise, skies will be partly sunny with highs in the upper 70s.

>> The UV index explained

Sunday: Skies will be partly cloudy There is a slight chance for a passing shower or storm, mainly in the southern counties. Highs will be in the lower 80s. 

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WPAFB Tuesday Weather: Storms with gusty winds, hail possible today

Published: Tuesday, June 19, 2018 @ 1:49 AM

A false alarm in a building led to a temporary gate closure Wednesday night in Area B, a base spokeswoman said.
Staff Writer
A false alarm in a building led to a temporary gate closure Wednesday night in Area B, a base spokeswoman said.(Staff Writer)

A stormy pattern will set up across the area over the next 48 hours as a slow moving cold front moves into the region, said Storm Center 7 Meteorologist Eric Elwell.

RELATED: Live Doppler 7 Interactive Radar

Expect showers and storms to become more numerous during the afternoon and evening hours today and again on Wednesday. While the overall severe weather threat is marginal, one or two storms could produce gusty winds and some hail.

>> Humid air puts region at risk for potential flash-flooding

The main threat from the heavier storms will come from locally heavy rainfall which could lead to flash flooding. The added clouds and rain should hold temperatures in the 80s for highs through midweek.

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Dangerous heat to last into the new week

Published: Sunday, June 17, 2018 @ 8:03 AM
Updated: Sunday, June 17, 2018 @ 4:46 PM

5 Day Forecast with Chief Meteorologist Eric Elwell


It will be quite hot and humid with mostly sunny skies. Temperatures will reach near 93 degrees, according to Storm Center 7 Chief Meteorologist Eric Elwell. The heat index will be between 95 to 100 degrees by late afternoon. While most will stay dry, an isolated pop-up strong storm cannot be ruled out.

>>WHIO Doppler 7 Interactive Radar

QUICK-LOOK FORECAST:

- Air Pollution Advisory until Monday

- Heat index near 100 again Monday afternoon

- Storms to bring locally heavy rain by Tuesday

 >>5-day forecast

This Evening: A hot and humid evening is in the forecast with a slight chance for a pop-up storm. Any storms will quickly dissipate after sunset. Temperatures will fall through the 80s after sunset.

Tonight: Skies will become mostly clear. It will remain warm and muggy with a low around 73 degrees.

Tomorrow: Another hot day is in the forecast with the humidity making temperatures feel more like 100 degrees. Actual temperatures will top out in the lower 90s under mostly sunny skies. There is a slight chance for a pop-up late day storm. Chances will increase late Monday night. 

Tuesday: Skies will be partly cloudy with an increasing chance for scattered showers and storms developing, especially during the afternoon. Some of the storms could produce locally heavy rainfall and flash flooding. Highs will top out in the upper 80s.

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

Wednesday: Numerous showers and storms will be scattered across the Miami Valley. Some of the storms could produce locally heavy rainfall and flash flooding. Storms will taper down after sunset. Highs will be in the middle 80s.

Thursday: There is a chance for a few storms early in the day and then again toward late evening or at night. Otherwise partly cloudy skies are expected with a bit cooler, less humid air arriving. Highs will be in the lower 80s.

Friday: Scattered showers and storms will return by the afternoon with highs in the middle 80s.

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