Knox County Storm Activity
Wind, hail, and tornado activity from official NOAA sources (NWS & SPC) · Last 180 days · Updated Sep 11, 2026
Looking for storm and wind reports in Knox County, Tennessee? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records show 36 severe weather events in the last 180 days — 19 high-wind reports with gusts up to 50 mph, plus 17 hail reports with hail up to 0.5". The most recent recorded storm activity was in September 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.
What the radar showed
Last 30 days in Knox County
Recent storms — full detail available in the app
Storm activity from the last 30 days is summarized at the county level on this page. Exact locations, radar snapshots, and official warning boundaries for recent events are available with a free account.
See the specifics — free →Storm log — the official record, day by day
Events older than 30 days, as recorded by the National Weather Service and Storm Prediction Center. Excerpts are quoted directly from official warnings and verified reports.
Tuesday, August 11, 2026
4 NWS warnings — hail up to 0.25", wind gusts up to 50 mph
“At 934 PM EDT, trained weather spotters reported gusty showers along a line extending from 7 miles south of Plainview to 9 miles east of Knoxville to 11 miles northwest of Pigeon Forge to near Sevierville to near Gatlinburg. Movement was southwest at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”
“At 922 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from 9 miles northeast of La Follette to near Rutledge to near Parrottsville. Movement was south at 20 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Knox County NWS severe weather mention
- Wind 50 mph Knox County NWS severe weather mention
- Wind 50 mph Knox County NWS severe weather mention
- Hail 0.25" Knox County NWS severe weather mention
Sunday, August 9, 2026
1 NWS warning — hail up to 0.25"
“At 504 PM EDT, Doppler radar was tracking a strong thunderstorm 10 miles northwest of Sevierville, moving northeast at 10 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Knoxville, Sevierville, Strawberry Plains, Kodak, and Mascot.”
- Hail 0.25" Knox County NWS severe weather mention
Friday, August 7, 2026
1 NWS warning — hail up to 0.25"
“At 313 PM EDT, Doppler radar was tracking a strong thunderstorm near Maryville, moving northeast at 15 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.25" Knox County NWS severe weather mention
Monday, July 27, 2026
1 NWS warning — wind gusts up to 50 mph
“At 252 AM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Morristown to 9 miles east of Knoxville. Movement was southeast at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Knox County NWS severe weather mention
Saturday, July 18, 2026
1 NWS warning — wind gusts up to 50 mph
“At 555 PM EDT, Doppler radar was tracking a strong thunderstorm over Maynardville, moving southeast at 10 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Knoxville, Morristown, Jefferson City, Maynardville, Rutledge, New Tazewell, Bean Station, Tazewell, Plainview, and New Market.”
- Wind 50 mph Knox County NWS severe weather mention
Sunday, July 12, 2026
1 NWS warning — wind gusts up to 50 mph
“At 806 PM EDT, Doppler radar was tracking a strong thunderstorm over Alcoa, moving northeast at 10 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Knoxville, Maryville, Alcoa, Louisville, Rockford, Eagleton Village, Lake Forest, Wildwood, and Seymour.”
- Wind 50 mph Knox County NWS severe weather mention
Monday, July 6, 2026
1 NWS warning — hail up to 0.25"
“At 534 PM EDT, Doppler radar was tracking a strong thunderstorm 9 miles south of Plainview, or 12 miles northeast of Knoxville. This thunderstorm was drifting slowly south. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.25" Knox County NWS severe weather mention
Sunday, July 5, 2026
1 NWS warning — wind gusts up to 50 mph
“At 1233 PM EDT, Doppler radar was tracking a strong thunderstorm over Oliver Springs, or near Oak Ridge, moving east at 10 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Knoxville, Oak Ridge, Clinton, Oliver Springs, Karns, and Coalfield.”
- Wind 50 mph Knox County NWS severe weather mention
Friday, July 3, 2026
1 NWS warning — hail up to 0.25"
“At 1020 PM EDT, Doppler radar was tracking a strong thunderstorm 8 miles east of Knoxville, moving northwest at 10 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.25" Knox County NWS severe weather mention
Sunday, June 28, 2026
1 NWS warning — wind gusts up to 50 mph
“At 1040 AM EDT, Doppler radar was tracking strong thunderstorms along a line extending from 10 miles east of Knoxville to Kingston. Movement was southeast at 35 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Knox County NWS severe weather mention
Saturday, June 27, 2026
1 NWS warning — hail up to 0.25"
“At 1209 PM EDT, Doppler radar was tracking a strong thunderstorm near Knoxville, moving east at 35 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.25" Knox County NWS severe weather mention
Sunday, May 24, 2026
1 NWS warning — wind gusts up to 50 mph
“At 717 PM EDT, Doppler radar was tracking a strong thunderstorm near Farragut, or near Lenoir City, moving northeast at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Knoxville, Oak Ridge, Maryville, Clinton, Lenoir City, Alcoa, Farragut, Louisville, Rockford, and Halls.”
- Wind 50 mph Knox County NWS severe weather mention
Friday, May 22, 2026
2 NWS warnings — hail up to 0.5"
“At 518 PM EDT, Doppler radar was tracking a strong thunderstorm over Clinton, moving northeast at 30 mph. Hazard: Wind gusts up to 40 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
“At 229 PM EDT, Doppler radar was tracking a strong thunderstorm over Lenoir City, moving northeast at 30 mph. Hazard: Wind gusts up to 40 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.5" Knox County NWS severe weather mention
- Hail 0.5" Knox County NWS severe weather mention
Wednesday, May 20, 2026
2 SPC verified storm reports · 3 NWS warnings — hail up to 0.25", wind gusts up to 50 mph
“At 723 PM EDT, Doppler radar was tracking a strong thunderstorm 8 miles north of Knoxville, moving north at 15 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Clinton, Maynardville, Plainview, Halls, Norris, Luttrell, Norris Dam State Park, Andersonville, Maloneyville, and Paulette.”
“At 621 PM EDT, Doppler radar was tracking a strong thunderstorm over Rockford, or near Alcoa, moving northeast at 15 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Wind 50 mph Knox County NWS severe weather mention
- Hail 0.25" Knox County NWS severe weather mention
- Hail 0.25" Knox County NWS severe weather mention
- Wind Unknown 5 SW Lake Forest SPC verified report
- Wind Unknown 2 SE Knoxville SPC verified report
Thursday, April 16, 2026
1 NWS warning — hail up to 0.25"
“At 647 PM EDT, Doppler radar was tracking a strong thunderstorm near Plainview, or near Maynardville, moving east at 40 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.25" Knox County NWS severe weather mention
Saturday, March 21, 2026
3 NWS warnings — hail up to 0.5"
“At 555 PM EDT, Doppler radar was tracking a strong thunderstorm near New Market, or 10 miles southwest of Jefferson City, moving east at 25 mph. Hazard: Winds in excess of 30 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
“At 446 PM EDT, Doppler radar was tracking a strong thunderstorm 9 miles northeast of Clinton, moving east at 25 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include...”
- Hail 0.5" Knox County NWS severe weather mention
- Hail 0.25" Knox County NWS severe weather mention
- Hail 0.25" Knox County NWS severe weather mention
Today's severe weather outlook
Common questions
When was the last severe storm in Knox County, TN?
The most recent recorded event was in September 2026. Official NWS and SPC records show 36 severe weather events in Knox County over the last 180 days. Exact dates and locations for recent storms are available in the app with a free account.
Has there been hail in Knox County recently?
Yes — 17 hail reports in the last 180 days, with hail up to 0.5" recorded.
How do I check whether a specific address was affected?
Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property — county-level pages like this one only tell part of the story.