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Published: Friday, December 01, 2017 @ 8:40 AM
— Did you notice the frost looking a little unusual, with a ‘spiky’ appearance this morning? That's because it wasn't your typical frost.
The frost was created by fog, called ‘freezing fog.’ Freezing fog develops when the water droplets within the fog touch something that is below 32 degrees.
The droplets immediately freeze on contact, with each droplet freezing upon the last. This creates a jagged or dagger appearance.
Published: Monday, March 19, 2018 @ 3:34 AM
Updated: Monday, March 19, 2018 @ 11:35 PM
— QUICK-LOOK FORECAST
TONIGHT: Rain moving in and may change to freezing variety or sleet overnight, Storm Center 7 Chief Meteorologist Eric Elwell said. Temperatures fall to near freezing by morning.
TUESDAY: A wintry mix early will likely change to a cold rain through the middle of the day with temperatures in the lower 40s. Colder air will usher back in during the evening, causing the rain to change to snow. All snow is expected Tuesday night with likely accumulations. The Winter Weather Advisory for much of the Miami Valley is to go into effect at 8 p.m. and expire at 8 p.m. Wednesday, according to the National Weather Service in Wilmington.
WEDNESDAY: Snow likely early then tapering by midday. Snowfall accumulation will range from 2 to 4 inches with isolated areas picking up higher amounts. Clouds will linger through the day with gusty winds and temperatures in the middle to upper 30s.
THURSDAY: Skies will be mostly sunny. Highs to hold in the upper 30s.
FRIDAY: Expect lots of sunshine with clouds increasing late. Highs will reach the middle 40s.
SATURDAY: Clouds will thicken with a chance of rain or snow late in the day or evening. Highs will reach the lower 40s.
Published: Monday, March 19, 2018 @ 12:01 AM
— WRIGHT PATTERSON AIR FORCE BASE—A cool start to the work week is expected, but temperatures are again expected to climb close to the middle 50s this afternoon, according to Storm Center 7 Meteorologist Brett Collar.
RELATED: County-by-County Weather
Most of today will be dry with clouds on the increase, but the chance for rain returns later this evening and tonight.
With temperatures falling below freezing around midnight, it’s looking like some of the rain may change over to a wintry mix.
Published: Friday, March 16, 2018 @ 2:31 PM
— During the winter months you may often hear about snow, sleet and freezing rain.
Each has its own hazards, but freezing rain can create hidden dangers on the roads, more than the others. Unlike snow or sleet on pavement, freezing rain can appear wet, but is actually a sheet of ice and will leave no traction for drivers.
Freezing rain forms in the clouds just like snow, but it’s what happens after the snowflake leaves the cloud that changes everything. During a freezing rain event the air within the cloud is cold enough to produce a snowflake.
If the snowflake falls into air below the cloud that is above freezing, it will melt into a raindrop. This droplet will continue to fall as rain as long as the environment remains above 32 degrees.
Since cold air is more dense than warm air, sometimes a thin layer of subfreezing air may settle to the surface cooling the ground. If this occurs, once the droplet hits anything that is below 32 degrees it will freeze on contact. Typically, elevated objects such as trees, overpasses and power lines are the first to accumulate ice. If freezing rain continues for an extended period of time, ice may become so thick that numerous accidents and power outages may occur.
Published: Thursday, March 15, 2018 @ 6:53 AM
Updated: Friday, March 16, 2018 @ 1:27 PM
— A storm system will approach the Miami Valley just in time for St. Patrick's Day, said Storm Center 7 Meteorologist Brett Collar. Early Saturday morning the system will bring freezing rain and possible ice acccumulation.
Slick roads and icy sidewalks could be an issue beginning at 4am Saturday, and last through noon.
Prior to sunrise Saturday, freezing rain is set to move in from the west. This will become more widespread around sunrise and that’s when ice accumulation will start to become a big issue. This will continue through the morning hours but by 10am or 11am, we should start to see a transition over to rain as temperatures climb above freezing. Untreated surfaces however are likely to still be icy through lunch time.