Live from the National Weather Service

Tennessee Storm Alerts

Active National Weather Service hail, wind, thunderstorm, tornado, tropical and winter storm alerts covering Tennessee, with the counties each one names and the office that issued it — plus what the state’s severe-weather season looks like and how each of these events actually damages a roof.

Below that, in its own lane, the smoke and fire family: fire weather, dense smoke, air quality, blowing dust and volcanic ashfall.

1 active alert · read from the National Weather Service at Sep 13, 8:15 AM EDT · refreshed every 10 minutes

This page is informational and is not a safety resource. It exists to show roofing professionals where storm damage has been reported, and it is refreshed on a ten-minute cycle, so it can lag the Weather Service.

During an active weather event, the authority is weather.gov and your local emergency management agency. Follow them, not this page.

Active storm alerts in Tennessee

Reproduced exactly as the National Weather Service issued them. Alerts frequently cross state lines, so a county list may name counties in a neighbouring state. Smoke and fire alerts are reported separately, in their own lane below.

Special Weather Statement

ModerateUrgencyExpectedCertaintyObserved

Issued by NWS Morristown TN

In effect from Sep 13, 4:22 AM local · until Sep 13, 9:00 AM local

Counties named in this alert

Cherokee
Clay
Hawkins
Sullivan
Johnson
Northwest Greene
Washington
Unicoi
Northwest Carter
Southeast Carter
Sequatchie
Bledsoe
Marion
Hamilton
Wise
Scott
Russell
Washington

Read the full National Weather Service text

NWS headline

Special Weather Statement issued September 13 at 4:22AM EDT by NWS Morristown TN

NWS description

Patchy dense fog has developed this morning, especially in places that saw notable rainfall yesterday. Visibilities have been down to one quarter of a mile or less in some spots. If traveling this morning, allow for extra time to reach your destination. Fog should lift by mid-morning.

View this alert on weather.gov

Radar over Tennessee

Straight from radar.weather.gov and regenerated by NOAA roughly every two minutes.

National Weather Service radar for the Southern Mississippi Valley, covering Texas, Oklahoma, Arkansas, Louisiana, Mississippi and Tennessee. — Where precipitation is falling over Tennessee right now. The National Weather Service publishes these mosaics by region rather than by state, so the frame runs past the state line and neighbouring states are visible in it. Radar shows precipitation, not damage — a return over a county is not evidence that any particular building was hit.
Radar imagery: the National Weather Service. Served directly from radar.weather.gov, a free US Government service, and regenerated by NOAA roughly every two minutes — your browser picks up new frames on its own. This site does not process, re-colour or re-time the imagery; it is the Weather Service’s own mosaic, unmodified. weather.gov
This radar is informational and is not a safety resource. During an active weather event, the authority is weather.gov and your local emergency management agency. Follow them, not this page.

Smoke & fire lane

Smoke & fire alerts in Tennessee

The National Weather Service issues a separate family of alerts for fire weather, dense smoke, air quality, blowing dust and volcanic ashfall. This lane reports that family for Tennessee, kept apart from the storm alerts above because the two answer different questions.

Wildfire smoke is what drives smoke-damage losses, and it reaches a building through the same vents that keep an attic dry — which is why it belongs on a roofing page at all. Alerts describing particulate already in the air are listed ahead of fire-weather forecasts; that ordering is this lane’s own and is not a Weather Service ranking.

0 active smoke or fire alerts · read from the National Weather Service at Sep 13, 8:15 AM EDT · refreshed every 10 minutes

No active smoke or fire alerts

The National Weather Service has no active fire weather, dense smoke, air quality, blowing dust or volcanic ashfall alerts covering Tennessee as of this refresh.

An empty list here is the ordinary reading, not a fault and not a gap in the data. Most of the country carries nothing in this family on most days, and this lane fills itself the moment the Weather Service issues something.

The 12 alert types this lane reports

Every one is a National Weather Service product and is listed under the name the Weather Service gives it. Grouping them into families is ours; the names are not.

Fire weather: Fire WarningExtreme Fire DangerRed Flag WarningFire Weather Watch
Dense smoke: Dense Smoke Advisory
Air quality: Air Quality Alert
Blowing dust: Blowing Dust WarningDust Storm WarningBlowing Dust AdvisoryDust Advisory
Volcanic ashfall: Ashfall WarningAshfall Advisory

The Weather Service defines each of these products and this site does not attempt to. What any one of them means, and the criteria an office issues it under, are at weather.gov.

This lane is informational and is not a safety resource. It reports which National Weather Service smoke and fire alerts are active and where, on a ten-minute refresh cycle, so it can lag the Weather Service.

During an active weather event, the authority is weather.gov and your local emergency management agency. Follow them, not this page.

Smoke exposure and air quality are health matters, and this page does not address them. It does not tell you whether it is safe to be outdoors or to work, what an air quality index number means for you or for anyone in your household, or what respiratory protection to use. Those questions belong with a clinician and with the agency that issued the alert. The federal air-quality authority is airnow.gov.

What smoke does to a roof assembly

An active alert is a record of conditions, not a finding about any building. These are the standing references on the building-assembly side of a smoke or fire loss.

Smoke odor in roof decking and attic insulationWhy odor outlives the visible repairs — deposition into bare decking and framing, insulation acting as a reservoir, and the difference between cleaning, sealing and removing. The article that covers wildfire smoke reaching an attic through the vents, with the roof itself untouched.Fire damage to a roof assemblyDirect flame against radiant heat, shingle distortion and mat delamination, charred sheathing and loss of section, and why a roof that looks intact from the ground can still be condemned.Roof replacement after a fireHow the repair-or-replace decision is built on a fire loss: partial against full deck replacement, the boundary between charred and heat-affected wood, matching, and the code upgrades a repair can trigger.Ventilation holes and fire department roof damageFire crews cut the roof on purpose. What vertical ventilation is for, how tactical damage is separated from fire damage in a scope, and what an opened deck needs in the meantime.Smoke Mitigation Network — directory listingLaboratory smoke damage testing and documentation, listed under Restoration & Mitigation → Smoke Damage Testing & Assessment. Whether a building is contaminated is established by sampling rather than by looking at it. The listing discloses that it shares ownership with this directory.

Severe weather season in Tennessee

Peak season

March–May, with a secondary autumn and winter season

Tennessee carries a spring severe season and a secondary one running into late autumn and early winter, with damaging straight-line wind and hail the routine roofing events. Storms crossing the state frequently arrive at night, which delays assessment. Winter ice storms are a distinct threat, particularly on the Cumberland Plateau and in East Tennessee, where accreted ice and falling limbs replace uplift as the mechanism.

Seasons describe a pattern, not a schedule. The National Weather Service issues these products year-round, and the live list above is the only authority on what is actually running in Tennessee right now.

What NOAA has recorded in Tennessee

The archived record, not the live feed. Severe weather logged by the National Centers for Environmental Information over the covered years, split into the events NOAA keys to a county and the events it keys to a forecast zone.

Between 2016 and 2026, NOAA recorded 8,325 county-level severe-weather events across Tennessee: 6,312 thunderstorm wind events, 1,610 hail reports and 403 tornadoes. Of the 1,610 hail reports carrying a measured size, 1,271 were 1.00 in across or larger.

A further 1,597 events over the same period were recorded against National Weather Service forecast zones rather than counties — 531 heavy snow events, 497 winter storms, 301 high wind events, 216 strong wind events and 51 ice storms. A forecast zone is not a county: it can span several or subdivide one, so these are reported here at state level and appear in no county total on this site.

County-keyed events

8,325

2016–2026

Zone-keyed events

1,597

statewide, not county-attributable

Hail 1.00 in or larger

1,271

of 1,610 sized hail reports

Tornadoes

403

in the county record

Counties with the heaviest record

Ranked by the number of county-keyed events NOAA recorded, 2016–2026. 95 of Tennessee’s counties carry a record in this dataset.

Davidson County518largest hail 2.50 in (Baseball) · peak gust 74 kt (about 85 mph)
Williamson County314largest hail 3.00 in (Softball+) · peak gust 74 kt (about 85 mph)
Wilson County299largest hail 3.00 in (Softball+) · peak gust 74 kt (about 85 mph)
Shelby County255largest hail 2.00 in (Baseball) · peak gust 78 kt (about 90 mph)
Knox County225largest hail 1.75 in (Golf Ball) · peak gust 63 kt (about 72 mph)
Lawrence County220largest hail 2.75 in (Softball+) · peak gust 78 kt (about 90 mph)
Sumner County215largest hail 2.00 in (Baseball) · peak gust 78 kt (about 90 mph)
Lincoln County203largest hail 1.75 in (Golf Ball) · peak gust 81 kt (about 93 mph)

Preliminary — not yet in the permanent archive

325 further preliminary storm reports have been filed against Tennessee counties since June 1, 2026. They are counted separately from every archived figure above and are not added to any of them.

Preliminary reports covering 2026-05-31 onward come from National Weather Service storm reports filed as events occur. They have not yet been through the quality-control review that produces the permanent archive, and individual reports may later be revised, combined or withdrawn.

County figures and state figures. County figures count events NOAA recorded against a county (hail, thunderstorm wind and tornadoes). High wind, winter storms, ice storms, blizzards, heavy snow, hurricanes and tropical storms are recorded against National Weather Service forecast zones rather than counties, so they are reported at state level instead. Counts reflect events that were observed and reported.

Source. Archived figures come from the NOAA National Centers for Environmental Information Storm Events Database, covering 2016 through May 31, 2026. Reports after that date come from NOAA Storm Prediction Center preliminary storm reports. Both are US Government works in the public domain. This is a record of past weather; the live alert list at the top of this page is the only authority on what is running in Tennessee now.

What these storms do to a roof

The damage mechanisms that matter in Tennessee, in the order they generate work here.

Hail

Hail damages an asphalt shingle in two ways at once. The impact knocks granules off the surface, and it can bruise or fracture the asphalt mat underneath without breaking the surface open. Granules are what shield the asphalt from ultraviolet light, so a roof that has lost them ages faster from that point on. A fractured mat is the reason hail damage is often described as latent: the roof may not leak the week of the storm, and the failure shows up later. On metal panels and metal accessories, hail leaves dents, which raises the separate question of whether the damage is cosmetic or has actually compromised the panel or its coating.

Straight-line wind

Wind damage on a shingle roof usually starts as a broken seal rather than a missing shingle. Uplift pressure is highest at the edges — rakes, eaves, ridges and hips — and along any line where the roof plane changes, so that is where tabs lift and the factory sealant strip lets go first. Once the seal is broken, a shingle that still looks fine from the ground is no longer bonded to the course below it and every later wind event works on the same spot. Wind also drives debris, and impact damage from a branch or from another roof’s material is a separate mechanism from uplift.

Tornado

Tornado damage is structural rather than incremental. Rather than degrading a covering, the event tends to remove decking, displace framing and fail the connections between the roof and the walls, which is a rebuild question rather than a re-cover question. The damage is also very sharply bounded: the path can take one street and leave the next one untouched, which is why the county list on a warning is a starting point and not a damage map.

Ice storms

An ice storm coats a roof, and everything above it, in accreted ice. The weight on the roof itself is one part of it; the larger roofing consequence is usually what the same ice does to trees and limbs overhead, which then come down onto the covering. Ice accretion also works into any existing gap — a lifted shingle, an open seam, a tired flashing — and freeze-thaw cycling widens what it gets into.

Why the storm date matters

Property insurance works from a date of loss — a specific storm on a specific day over a specific area, not a general observation that a roof looks worn. That is why the county list and the effective and expiry times on each alert above are the useful part of this page: they are the National Weather Service’s own record that a given event covered a given county at a given time.

It also matters because hail damage is frequently latent. A fractured shingle mat can take a long time to become a leak, so the gap between the storm and the discovery can be considerable — and by then, establishing which storm did it is a records question rather than an observation. An alert naming a county is not evidence that any particular building was damaged; it is evidence of what the weather was doing over that county, which is where an assessment starts rather than where it ends.

Next steps in Tennessee

Roofing contractors in TennesseeBrowse the Tennessee directory by city and county.Tennessee licensing rulesWhether roofers must be licensed here, which board issues it, and the bond and insurance rules.Storm damage roof repair guideHow hail and wind damage is identified, documented and repaired.National storm centerActive alerts across all 50 states and DC, busiest first.

Source: the National Weather Service. Every alert on this page comes from the NWS public alerts feed at api.weather.gov, a free US Government service, and is reproduced as the issuing office wrote it. The office that issued each alert is named on the alert itself.

This site does not edit, summarise or re-grade Weather Service text. Alerts are filtered into two separate lists — the event types that affect roofs, and the smoke, fire and airborne-particulate family — and each list is sorted. Nothing else is changed, and no alert is moved between the two lists to suit a heading.

weather.gov