Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Morristown, TN

Lower Mississippi River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Not Available Chance of Exceeding Levels During Entire Period Not Available Short-term Probabilistic Guidance (Experimental) Not Available

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EDT) Datum: Not Available Metadata

Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Tennessee River at Chattanooga are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 655 Moderate Flood Stage: 653 Flood Stage: 651 Action Stage: 649 Low Stage (in feet): -9999 Historic Crests (1) 678.90 ft on 03/11/1867 (2) 674.80 ft on 03/01/1875 (3) 657.98 ft on 03/18/1973 (4) 657.20 ft on 05/08/2003 (5) 651.38 ft on 04/20/1998 (6) 651.36 ft on 07/08/2013 (7) 651.14 ft on 02/24/2019 (P): Preliminary values subject to further review. Recent Crests (1) 651.14 ft on 02/24/2019 (2) 651.36 ft on 07/08/2013 (3) 657.20 ft on 05/08/2003 (4) 651.38 ft on 04/20/1998 (5) 657.98 ft on 03/18/1973 (6) 674.80 ft on 03/01/1875 (7) 678.90 ft on 03/11/1867 (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:14 Legend FEMA Layer Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

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678.9	Flood of record, March 11, 1867.
655	Major flooding begins.
653	Moderate flooding begins.
651	Flooding begins.

Low Water Impacts

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610 ft	Municipal and industrial water intakes could experience operational issues below this elevation.

About This Location

Latitude: 35.056111° N, Longitude: 85.306389° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 651 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other 621 ft 651 ft   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Chattanooga

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Excessive Rainfall Outlook Daily Tennessee Basin Lake Stages and Forecasts Water Release Schedule of TVA Dams Snow Information

Collaborative Agencies The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here. NWS Information National Weather Service Morristown Weather Forecast Office 5974 Commerce Blvd. Morristown, TN 37814 (423) 586-3771 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities