Oak Ridge Today

Aurora may be visible again Saturday night

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Screenshot of image by National Oceanic and Atmospheric Administration’s Space Weather Prediction Center

The aurora may be visible in the sky again Saturday night, depending upon the weather, federal forecasters said.

Severe and extreme geomagnetic storms associated with coronal mass ejections, or solar eruptions, are likely Sunday, according to the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center.

When the material from the sun arrives at Earth, it can cause a geomagnetic storm. During the storm, an aurora may be visible. An aurora is a natural electrical phenomenon characterized by shimmering lights in the upper atmosphere at night, usually near the northern or southern magnetic pole. They happen when energetic particles from the sun interact with atoms in the upper atmosphere.

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Aurora may be visible in sky

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Screenshot from National Weather Service Space Weather Prediction Center

It appears that the chances are low in Tennessee, but an aurora may be visible in the sky over the northern half of the country this weekend, and possibly as far south as Alabama.

The National Weather Service Space Weather Prediction Center has issued a watch for a severe geomagnetic storm, saying it is possible later in the day Friday and continuing through the weekend. At least seven Earth-directed coronal mass ejections are in transit, the NWS said.

However, “exact timing remains somewhat uncertain,” forecasters said.

A coronal mass ejection is a solar eruption. When the solar materials arrive at Earth, a geomagnetic storm can result.

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Tornado watch through early Wednesday

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Image courtesy National Weather Service in Morristown

A tornado watch is in effect in the area through early Wednesday, and strong to severe thunderstorms are possible, according to the National Weather Service in Morristown.

The NWS Storm Prediction Center in Norman, Oklahoma, said a severe weather outbreak is possible through Tuesday evening over the Ohio Valley, with the broader severe weather risk including parts of the Southeast.

“Strong and potentially long-track tornadoes are possible from Indiana and Ohio southward into the Mid South,” the Storm Prediction Center said. “A threat for strong tornadoes may focus this evening into tonight across parts of Alabama and Georgia.”

The region’s tornado watch is in effect until 2 a.m. Wednesday, and it includes Anderson, Campbell, Knox, Loudon, Morgan, Roane, Scott, and Union counties, among others. Oak Ridge is in Anderson and Roane counties.

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Winter weather: Closings, cancellations, delays

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Photos courtesy Oak Ridge Schools/ Isaac Walton, transportation supervisor, and Allen Thacker, supervisor of maintenance and operations

Oak Ridge Schools will be closed again on Monday due to unsafe road conditions, and City of Oak Ridge offices will open three hours late.

The schools were closed four days after the holiday last week due to the winter weather, as were many other schools, offices, and businesses. Some roads were also briefly closed. The winter weather has included more than eight inches of snow, freezing temperatures, below-zero wind chills, and slippery roads and sidewalks.

On Sunday, the Oak Ridge Police Department and City of Oak Ridge said many roadways were still very icy despite being treated and plowed.

“Conditions are expected to worsen once the sun goes down,” they said. “Stay home, if possible.”

The schools said temperatures are projected to warm on Monday.

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Wind chill advisory issued

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Image courtesy National Weather Service in Morristown

Cold temperatures and wind chills below zero are expected Friday night into Saturday morning, according to the National Weather Service in Morristown.

The NWS issued a wind chill advisory starting 11 p.m. Friday and continuing through noon Saturday.

Temperatures were forecast to continue to fall quickly with most places in the single digits by Saturday morning.

“Below 0 wind chills are also expected late tonight (Friday night) through Saturday with most places barely reaching 20 degrees on Saturday,” the NWS said. “Temperatures Saturday night will fall to near or even below 0 in most places. A warming trend will follow into next week.”

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Freezing rain affects roads

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Rutgers Avenue is pictured above near Walmart early Friday morning, Jan. 19, 2024. (Photo by John Huotari/Oak Ridge Today)

Freezing rain Thursday night affected roads in the region, and crashes, road closures, and icy roads were reported.

The Oak Ridge Police Department said the rain had turned most roads to ice.

“We advise that you do not travel as conditions may worsen throughout the night,” the ORPD said about 10 p.m. Thursday.

Friday morning, the department said police officers had responded to several weather-related crashes.

“The roads have had minor improvements,” the ORPD said. “However, there are still a large amount of troubled areas.”

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TVA asks customers to conserve power during high demand

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Photo courtesy Tennessee Valley Authority

The Tennessee Valley Authority said heavy snow and bitter cold temperatures are creating record-high demand for electricity across the Southeast.

“As a result, the Tennessee Valley Authority is asking customers to be aware of their power consumption, specifically between 6 a.m. and 10 a.m. (Central Time) on Wednesday,” a press release said.

“TVA is actively monitoring weather conditions, and our power system remains stable,” the press release said. “Conservation requests are often used in the power industry to help lower demand during a specific time and does not indicate TVA is experiencing emergency conditions. If you are experiencing an outage, please check with your local electric provider for more information.”

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City offices, Y-12, AC Courthouse closed Wednesday

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City of Oak Ridge offices and facilities, Y-12 National Security Complex, and the Anderson County Courthouse will be closed Wednesday due to winter weather.

Only essential personnel are to report in the City of Oak Ridge. The Oak Ridge City Council work session scheduled for Tuesday night was canceled.

In Anderson County, crews have been working around the clock, but side roads are still in bad condition as are parking areas.

“The temperatures are expected to be very low tonight, and the main roads that are currently passable will most likely be ice in the early morning hours,” a press release said.

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Wind chills expected below zero

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Image courtesy National Weather Service in Morristown

Wind chills below zero are expected through Tuesday night through noon Wednesday, according to the National Weather Service in Morristown.

A wind chill advisory went into effect at 5 p.m. Tuesday and will continue until lunchtime Wednesday.

The low Tuesday night is forecast at 1 degree Fahrenheit, with a wind around 5 miles per hour and wind chill values between -2 and -7.

The high on Wednesday is supposed to be near 28 with wind chill values between -8 and 2.

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Schools closed Wednesday

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Snow falls at Oak Ridge High School on Monday, Jan. 15, 2024. Oak Ridge Schools announced they will be closed Tuesday. (Photo by John Huotari/Oak Ridge Today)

Oak Ridge Schools will be closed again on Wednesday due to the winter weather.

The school system had been closed Tuesday as well due to the weather.

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Crews clearing roads, repairing water line breaks

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Image courtesy City of Oak Ridge

Oak Ridge crews are working to clear roads and repair water line breaks.

The Oak Ridge Public Works Department worked through the night to clear main roads, according to the city government. Melton Lake Drive and South Illinois Avenue are back open.

The department will begin to plow side streets once main roads are good for driving, the city said.

“While every city street was brined or treated before the storm, it was no match for this amount of snow combined with continued low temperatures,” the city said.

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Y-12 closed Tuesday

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The entrance sign at Y-12 National Security Complex at Bear Creek Road and Scarboro Road is pictured above on Wednesday, Jan. 25, 2023. (Photo by John Huotari/Oak Ridge Today)

Y-12 National Security Complex is closed Tuesday to everyone but essential personnel.

The Uranium Processing Facility project is also closed, Y-12 said.

“Teleworkers should continue to work remotely,” the plant said. “The Information Line will be updated with current information.”

Roads, schools, government offices, and businesses have closed due to the winter weather that started Sunday night, including snow, cold temperatures, and hazardous driving conditions.