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Counties · Ohio

Knox County

53 storm reports in the past 12 months. This page is a summary of National Weather Service reports; it is not a Knox County government page.

Largest hail, 12 months

1 in (estimated)

3 S Butler, Mar 26, 2026

Tornado reports, 12 months

1

Tornado reports are confirmed or ruled out later by NWS damage surveys.

Reports

53 reports match.

  1. Sun, Aug 16, 2026

  2. FloodingFlood

    6 ENE Martinsburg, Knox County

    Water over Front Royal Road in far southeast Knox County. Time estimated.

    Reported by 911 Call Center · NWS Cleveland

  3. FloodingFlood

    5 SSE Danville, Knox County

    Water over Walhonding Road in far eastern Knox County. Time estimated.

    Reported by 911 Call Center · NWS Cleveland

  4. FloodingFlood

    5 W Danville, Knox County

    Several photos of minor flooding from near Apple Valley Lake in Howard Township. Overflowing drainage ditches led to some water over roadways.

    Reported by Amateur Radio · NWS Cleveland

  5. Sat, Jul 18, 2026

  6. WindThunderstorm wind damage

    5 NNE Mount Vernon, Knox County

    Knox County Sheriff Dispatch reported a tree down at North Liberty Road and Proper Road. Time estimated via radar.

    Reported by 911 Call Center · NWS Cleveland

  7. WindThunderstorm wind damage

    2 SE Fredericktown, Knox County

    Knox County Sheriff Dispatch reported a tree down at Hyatt Road and Z Street. Time estimated via radar.

    Reported by 911 Call Center · NWS Cleveland

  8. Sun, Jun 14, 2026

  9. WindThunderstorm wind gust 56 mph measured

    5 SSW Mount Vernon, Knox County

    AWOS station K4I3 Mt Vernon Knox.

    Reported by AWOS · NWS Cleveland

  10. Sat, Jun 6, 2026

  11. WindThunderstorm wind damage

    2 ENE Mount Vernon, Knox County

    Extensive roof damage to a building along with surrounding tree damage with limbs down. Time estimated via radar.

    Reported by Broadcast Media · NWS Cleveland

  12. WindThunderstorm wind damage

    3 NW Mount Vernon, Knox County

    Large Tree and power lines down on State Route 13 between Mount Vernon and Green Valley.

    Reported by Amateur Radio · NWS Cleveland

  13. Fri, Apr 3, 2026

  14. FloodingFlood

    4 SW Butler, Knox County

    Knox County branch of Ohio DOT reported flooding on SR95 near the Knox/Richland county line.

    Reported by Dept Of Highways · NWS Cleveland

  15. FloodingFlash flood

    4 NNE Fredericktown, Knox County

    The Knox County branch of the Ohio DOT sent a photo of water 3 to 4 inches deep on Yankee Street just east of Roberts Road.

    Reported by Dept Of Highways · NWS Cleveland

  16. Thu, Mar 26, 2026

  17. HailHail 1 in (quarter) estimated

    3 S Butler, Knox County

    Reported by Trained Spotter · NWS Cleveland

  18. WindThunderstorm wind damage

    Mount Vernon, Knox County

    A few calls for downed trees and powerlines in the Mt Vernon area.

    Reported by 911 Call Center · NWS Cleveland

  19. WindThunderstorm wind damage

    3 SSE Fredericktown, Knox County

    Sporadic trees down across Knox County. Most of the down trees were observed in Fredericktown and Mount Vernon. Time estimated via radar.

    Reported by Emergency Mngr · NWS Cleveland

  20. TornadoTornado

    4 SW Fredericktown, Knox County

    A brief EF-0 tornado with maximum wind speeds of 75 mph and a maximum width of 20 yards began just west of Granny Creek road southwest of Fredricktown. The tornado ripped off part of a metal roof of a barn and carried it southeast, with debris scattered across a field on the east side of the road.

    Reported by NWS Storm Survey · NWS Cleveland

  21. WindThunderstorm wind damage

    Fredericktown, Knox County

    Tree downed on a house near Fredericktown.

    Reported by 911 Call Center · NWS Cleveland

  22. Sun, Mar 22, 2026

  23. HailHail 1 in (quarter) estimated

    Mount Vernon, Knox County

    Reported by Public · NWS Cleveland

  24. HailHail 1 in (quarter) estimated

    Mount Vernon, Knox County

    Reported by Public · NWS Cleveland

  25. HailHail 1 in (quarter) estimated

    5 E Sparta, Knox County

    Reported by Public · NWS Cleveland

  26. HailHail 0.75 in (penny) estimated

    1 S Mount Vernon, Knox County

    Reported by Public · NWS Cleveland

  27. Fri, Mar 13, 2026

  28. WindWind damage (not from a thunderstorm)

    1 NW Mount Vernon, Knox County

    Reports of multiple downed power poles and trees in Knox County, especially Mount Vernon.

    Reported by Public · NWS Cleveland

  29. WindWind damage (not from a thunderstorm)

    3 SW Mount Vernon, Knox County

    Sheriff has roads blocked off from down trees on Route 3 into southwest Mount Vernon.

    Reported by Public · NWS Cleveland

  30. Mon, Feb 23, 2026

  31. SnowSnow 2.1 in measured

    4 NNW Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland

  32. SnowSnow 2 in measured

    1 SE Centerburg, Knox County

    24-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  33. Sat, Feb 7, 2026

  34. SnowSnow 2.5 in measured

    2 SE Centerburg, Knox County

    24-hour snowfall.

    Reported by CO-OP Observer · NWS Cleveland

  35. Fri, Feb 6, 2026

  36. SnowSnow 2 in measured

    1 SE Centerburg, Knox County

    24-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  37. Mon, Jan 26, 2026

  38. SnowSnow 2 in measured

    3 ESE Fredericktown, Knox County

    12-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  39. SnowSnow 8 in measured

    3 NE Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland

  40. SnowSnow 6 in measured

    4 NNW Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland

  41. Sun, Jan 25, 2026

  42. SnowSnow 11 in measured

    3 ESE Fredericktown, Knox County

    24-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  43. SnowSnow 8.5 in measured

    1 SE Centerburg, Knox County

    12-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  44. SnowSnow 10.8 in measured

    Mount Vernon, Knox County

    Reported by Public · NWS Cleveland

  45. SnowSnow 8 in measured

    Mount Vernon, Knox County

    Reported by Public · NWS Cleveland

  46. SnowSnow 4 in measured

    Gambier, Knox County

    12-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  47. SnowSnow 4 in measured

    4 NNW Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland

  48. SnowSnow 4 in measured

    3 NE Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland

  49. SnowSnow 2.5 in measured

    1 SE Centerburg, Knox County

    12-hour snowfall.

    Reported by Trained Spotter · NWS Cleveland

  50. Mon, Jan 19, 2026

  51. SnowSnow 2.5 in measured

    2 SE Centerburg, Knox County

    24-hour snowfall.

    Reported by CO-OP Observer · NWS Cleveland

  52. Thu, Jan 1, 2026

  53. SnowSnow 3 in measured

    Greer, Knox County

    24-hour snowfall.

    Reported by CO-OP Observer · NWS Cleveland

  54. SnowSnow 2.5 in measured

    3 NE Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland

  55. SnowSnow 2.5 in measured

    4 NNW Fredericktown, Knox County

    24-hour snowfall.

    Reported by CoCoRaHS · NWS Cleveland