Our Proprietary 10-Day Forecast

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Current warnings over Norris, Tennessee
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Norris, Tennessee red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Norris, Tennessee red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Johnson County, TN

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Norris, Tennessee

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Norris, TN please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Norris, TN

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Norris, TN, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Norris, Tennessee

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Johnson County, Tennessee

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Norris, TN Climate Summary

Location

East Tennessee, United States

Climate Type

Humid subtropical (Cfa)

Average Temperature

    •   Annual: 56.5°F (13.6°C)
    •   January: 36.1°F (2.3°C)
    •   July: 77.6°F (25.3°C)

Average Precipitation

    •   Annual: 46.5 inches (1181 mm)
    •   Wettest month: March (4.9 inches)
    •   Driest month: October (2.6 inches)

Snowfall

    •   Average annual snowfall: 10.5 inches (27 cm)

Humidity

    •   Average annual relative humidity: 71%

Wind

    •   Prevailing wind direction: West-southwest
    •   Average wind speed: 7.6 mph (12.2 km/h)

Other Climate Characteristics

    •   Tornadoes

Norris is located in an area with a moderate risk of tornadoes.

    •   Flooding

The Norris Dam, located nearby, helps to control flooding along the Clinch River.

    •   Droughts

Droughts can occur during the summer months, but they are typically short-lived.

    •   Growing season

The average frost-free period in Norris is 180 days, from April 10th to October 18th.

Climate Extremes

    •   Highest recorded temperature: 103°F (39°C)
    •   Lowest recorded temperature: -13°F (-25°C)
    •   Heaviest 24-hour rainfall: 11.5 inches (292 mm)
    •   Greatest snowfall in 24 hours: 17.0 inches (43 cm)

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Norris Dam, completed in 1936, is the tallest dam in the Tennessee Valley Authority system, standing at 265 feet high.

    •   The Clinch River, which flows through Norris, is home to a diverse array of fish species, including rainbow trout, smallmouth bass, and walleye.

    •   The Norris Lake area is a popular destination for birdwatching, with over 200 species observed, including bald eagles and osprey.

Science

    •   Norris was the site of the first large-scale nuclear reactor experiment, known as the Oak Ridge Graphite Reactor, which began operating in 1943.

    •   The town is home to the American Museum of Science and Energy, which showcases the history and science of nuclear energy.

    •   Norris is also the location of the University of Tennessee's Institute for Nuclear Power Operations, a training facility for nuclear power plant operators.

Personalities

    •   Norris was named after George W. Norris, a U.S. Senator from Nebraska who was a strong advocate for public power and the Tennessee Valley Authority.

    •   The town was planned and built by the TVA as a model community, with modern amenities and a focus on sustainability.

    •   Norris has been home to several notable scientists and engineers, including Alvin Weinberg, the first director of the Oak Ridge National Laboratory.

Tourist Attractions
1. Norris Dam State Park: Located just outside Norris, this park offers stunning views of Norris Lake and the surrounding mountains. Visitors can enjoy hiking, biking, boating, fishing, and camping.

2. Museum of Appalachia: This museum is dedicated to preserving the history and culture of the Appalachian region. Visitors can explore exhibits on traditional crafts, music, and farming.

3. Norris Lake: This large lake is a popular spot for boating, fishing, and swimming. Visitors can also enjoy hiking and camping in the surrounding area.

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