Knox County Hail Map & Storm Reports
Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Nov 1, 2026
Looking for storm and wind reports in Knox County, Tennessee? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records show 48 severe weather events in the last 12 months — 27 high-wind reports with gusts up to 55 mph, plus 21 hail reports with hail up to 0.88". The most recent recorded storm activity was on Sep 23, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.
Knox County hail map
Where hail and high-wind reports clustered across Knox County over the last 12 months. Heat shows report density and significance, not radar.
What the radar showed
Storm exposure for an address in Knox County
Get a free report in your folder. A city is enough if you do not have a street.
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.
Wednesday, September 23, 2026
1 NWS warning — hail up to 0.25"
“At 817 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles northwest of New Market to 6 miles northeast of Knoxville. Movement was south at 20 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
Friday, September 18, 2026
2 NWS warnings — hail up to 0.88"
“At 630 PM EDT, Doppler radar was tracking a strong thunderstorm near Plainview, or 8 miles southeast of Maynardville, moving southeast at 15 mph. Hazard: Wind gusts up to 50 mph and nickel 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...”
“At 341 PM EDT, Doppler radar was tracking a strong thunderstorm over Farragut, or 8 miles east of Lenoir City, moving southwest at 15 mph. Hazard: Wind gusts up to 50 mph and nickel 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 0.88" Knox County NWS severe weather mention
- Hail 0.88" Knox County NWS severe weather mention
Sunday, September 6, 2026
1 NWS warning — hail up to 0.25"
“At 547 PM EDT, Doppler radar was tracking a strong thunderstorm over Oak Ridge, moving south at 20 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, September 5, 2026
3 NWS warnings — wind gusts up to 50 mph
“At 1259 PM EDT, Doppler radar was tracking a strong thunderstorm over Oliver Springs, or near Oak Ridge, moving 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... Oak Ridge, Lenoir City, Kingston, Loudon, Farragut, Oliver Springs, Louisville, Friendsville, Coalfield, and Bradbury.”
“At 1258 PM EDT, Doppler radar was tracking a strong thunderstorm near Knoxville, moving south at 25 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, Alcoa, Farragut, Louisville, Rockford, Eagleton Village, Friendsville, and Karns.”
- 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
Thursday, August 20, 2026
1 NWS warning — hail up to 0.25"
“At 928 PM EDT, Doppler radar was tracking a strong thunderstorm near Loudon, moving northeast 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 0.25" Knox County NWS severe weather mention
Monday, August 17, 2026
2 SPC verified storm reports · 1 NWS warning — wind gusts up to 50 mph
“At 528 PM EDT, Doppler radar was tracking a strong thunderstorm 7 miles west of Knoxville, moving east at 40 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, Sevierville, Clinton, Alcoa, Gatlinburg, Farragut, Pigeon Forge, Louisville, and Karns.”
“Automated dispatch email. Tree fallen onto power lines and blocking road at Fairmont Blvd. (MRX)”
- Wind 50 mph Knox County NWS severe weather mention
- Wind Unknown 3 NE Knoxville SPC verified report
- Wind Unknown 3 SW Powell SPC verified report
Friday, August 14, 2026
1 SPC verified storm report
“Trees blown down... one at Norwood Elementary School and one on Lacy Road. (MRX)”
- Wind Unknown 5 NW Knoxville SPC verified report
Thursday, August 13, 2026
1 NWS warning — hail up to 0.5"
“At 453 PM EDT, Doppler radar was tracking a strong thunderstorm 7 miles southeast of Knoxville, moving southeast at 15 mph. Hazard: Wind gusts up to 50 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
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
Monday, March 16, 2026
1 SPC verified storm report
- Wind Unknown 3 NNE Lake Forest SPC verified report
Friday, February 20, 2026
1 SPC verified storm report
“Multiple trees and powerlines down across Knoxville... with at least one tree falling on a home in East Knoxville. (MRX)”
- Wind Unknown 4 ENE Knoxville SPC verified report
Thursday, December 18, 2025
3 SPC verified storm reports · 3 NWS warnings — wind gusts up to 55 mph
“At 1054 PM EST, Doppler radar was tracking gusty showers along a line extending from near Lenoir City to near Sweetwater to 6 miles west of Etowah. Movement was east at 50 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
“At 1107 PM EST, Doppler radar was tracking gusty showers along a line extending from near Noetown to near Farragut. Movement was east at 50 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 55 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
- Wind Unknown 1 ESE Knoxville SPC verified report
- Wind Unknown 2 ENE Bearden SPC verified report
- Wind Unknown Powell SPC verified report
Sunday, November 2, 2025
1 NWS warning — hail up to 0.5"
“At 330 PM EST, Doppler radar was tracking a strong thunderstorm 8 miles west of Sevierville, moving northeast at 20 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...”
- Hail 0.5" 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 on Sep 23, 2026. Official NWS and SPC records show 48 severe weather events in Knox County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.
Did it hail in Knox County recently?
Yes — 21 hail reports in the last 12 months, with hail up to 0.88" recorded. The hail map above shows where reports clustered; the storm log lists each day.
How do I see hail history for a specific address in Knox County?
Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property, including the most recent 30 days — county-level pages like this one only tell part of the story.
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