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Published: Friday, October 06, 2017 @ 7:21 PM
— The rain has moved out for tonight, but will return as we head into the weekend, Storm Center 7 Chief Meteorologist Eric Elwell said.
A strong cold front is expected to enter the area Saturday evening, which will bring with it numerous showers and storms. Gusty winds will develop ahead of the front.
Showers and storms will move into the area Saturday between 6 p.m. and midnight. A few storms could produce strong winds and locally heavy rainfall. The rain should exit the Miami Valley by early Sunday morning.
By late Sunday, the remnants of what is now Tropical Storm Nate will approach from the south. Rain is expected to redevelop across the Miami Valley near or shortly after dark Sunday and continue into Sunday night.
While the exact track of Nate is still in question, some parts of the Miami Valley could pick up more heavy rainfall Sunday night into Monday. Right now, the area most likely to get the heaviest rain looks be be along and southeast of the Interstate 71 corridor.
Published: Monday, February 12, 2018 @ 6:38 AM
MIAMI VALLEY — The International Space Station will fly over the Miami Valley Monday evening. The skies should be pretty clear at that point, meaning it will be even easier to see.
The Station will appear to climb above the horizon in the northwest sky around 6:46 p.m. It will reach 84 degrees which is almost directly over your ahead in the night sky dropping below the horizon in the southeast about six minutes later at 6:52 p.m.
The ISS will look like a plane or a star in the night sky, but it won't have flashing lights like a plane or twinkle like a star.
Published: Tuesday, February 06, 2018 @ 3:31 AM
Updated: Wednesday, February 07, 2018 @ 12:02 AM
QUICK-LOOK FORECAST —
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Tonight: Snow likely after midnight, continuing through the early morning. Snow may mix with freezing rain and sleet near I-71. Temperatures will hold in the 20s.
Today: Snow will taper in the morning. Accumulations of 1 to 3 inches expected for Dayton and areas north and west. Amounts as much as 4 to 5 inches possible southeast of Dayton to near I-71. Some ice accumulation, up to two-tenths of an inch possible in the far southern Miami Valley. Skies will remain mostly cloudy into the afternoon with a chance of flurries or light snow showers redeveloping in the early evening. Highs will hold in the upper 20s.
Thursday: Ready for some sun? Expect partly sunny skies and chilly temperatures with highs in the upper 20s.
Friday: Mostly cloudy skies. Some flurries will be possible in the far northern Miami Valley. Highs will rebound into the upper 30s.
Saturday: Expect mostly cloudy skies with a chance for rain and/or snow showers late in the evening. Highs will be near 40 degrees.
Published: Monday, December 11, 2017 @ 3:18 PM
— What is typically born in Alberta, Canada, and tends to love La Nina winters? An Alberta Clipper, of course.
It’s one of the most significant synoptic-scale winter weather phenomena affecting central North America and the Great Lakes.
STORM CENTER 7: Get the latest forecast
We had one bring us snow last weekend, and we have another one crossing the Great Lakes Tuesday. They occur most frequently during December and January and substantially less during October and March.
Alberta Clippers are defined as very fast moving low-pressure systems, usually with low in moisture content, originating in Alberta in the lee of the Canadian Rockies, and then travel southeastward.
Because clipper systems develop and track usually far away from large moisture sources, they typically do not produce a lot of precipitation. They also tend to move very quickly, sometimes as fast as 40 miles per hour.
Clippers are most known for producing strong, frigid winds, and the strongest ones can blast a region with 30 to 50 mph gusts or stronger.
With freshly fallen snow, clippers can create blizzard-like conditions. With the low moisture content, these systems usually only produce a few inches of snow at most. This can vary, though, depending on how much moisture the clipper can bring with it and how cold the air is. The colder the temperature, the higher the liquid to snow ratio will be. Basically, if it is quite cold, snowflakes can “fluff up” more, leading to higher accumulations.
Because we are likely entering a La Nina winter, it is likely that much of the snowfall we see this coming season will be from Alberta Clippers. Alberta Clippers love La Nina years.
La Nina means the Jet Stream or storm track usually dives south across the Great Lakes. That can often mean areas surrounding the lakes often see a white Christmas.
The Great Lakes southern and eastern shores often receive enhanced snowfall from Clippers during the winter months from lake enhancement. Lake-effect snow substantially increases snowfall totals.
Also, if conditions are favorable, an Alberta Clipper can rapidly intensify off the East Coast. Once the storm taps the relatively warm moist air over the Atlantic Ocean, the storm sometimes spreads heavy snow over New England and Southeastern Canada. Such a system appears to be brewing for this region this week.
While not quite as common, there are two variations of Alberta Clippers. Manitoba Maulers and Saskatchewan Screamers are the names given to the other two. These systems are still often referred to as Clippers. The main difference between the three is from which Canadian province they begin their southward track.
While the pattern may try to moderate some as we head through this week, we have clearly entered a weather pattern prone to frequent clippers. If we can maintain or get a reinforcement of fresh cold air, it is looking like our chances for a white Christmas this year may be higher than normal.
There are signs in the long-range models that more cold air should arrive toward the end of the month. In fact, it is possible that the Ohio Valley could see a “battle-zone” of sorts set up around Christmas week between colder air trying to get reinforced from the northwest and moist, warmer air trying to get pushed northward.
This could mean a bigger storm system could be brewing around that time-frame somewhere in our region. Of course, timing is everything, but it still looks like the weather will be busy the rest of the month.
Published: Sunday, February 04, 2018 @ 1:30 PM
Updated: Monday, February 05, 2018 @ 8:10 AM
— Roadways are ice and snow-covered, and there are numerous reports of slide-offs and crashes across the region.
“We have seen some rain and with the cold air coming in we are seeing some of that rain freeze over,” said Storm Center 7 Meteorologist Brett Collar.
Some rain moving through Sunday evening froze over, leading to a thin sheet of ice. Steady snow then fell through the evening.