EF0 tornado 3 mi WNW of Johnstown
An EF-0 tornado with path length of 0.30 miles and a maximum path width of 80 yards occurred west of Bicknell. Damage mainly to large tree limbs and metal outbuilding roofs. Peak winds were 85 mph.
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Flat and low-slope roofs hold water longer, so small defects in the membrane, seams or drains turn into leaks quickly. Common membranes are TPO, EPDM, modified bitumen and built-up roofing.
For Knox County, NOAA lists 6 hail reports (largest 2 in), 44 damaging-wind reports (up to 70 mph) and 2 tornado reports from January 2024 to June 2026. These count reports, not damaged roofs.
An EF-0 tornado with path length of 0.30 miles and a maximum path width of 80 yards occurred west of Bicknell. Damage mainly to large tree limbs and metal outbuilding roofs. Peak winds were 85 mph.
Scattered trees and utility lines downed by thunderstorm winds around Vincennes.
Scattered trees and utility lines were downed from thunderstorm straight line winds north of Bicknell.
Source: NOAA NCEI Storm Events Database, data through Jun 30, 2026. All storm reports for Ragsdale
| Job | Typical US range |
|---|---|
| Flat roof (TPO / EPDM), average home | $5,000 – $12,000 |
| Minor roof repair (leak, flashing, a few shingles) | $350 – $1,500 |
| Larger repair or partial re-roof | $1,500 – $5,000 |
National planning ranges for an average ~2,000 sq ft home, not quotes. Local labor, roof pitch, layers to remove, materials and permits change the price.
Ponding water, failed seams, punctures, worn flashing and clogged drains are the usual causes.
Localized damage can be patched. If the membrane is old or wet insulation is widespread, replacement or a recover system may be the better value.
Many cities and counties require a building permit for roof work; the roofing company normally pulls it. Ask who is responsible and request a copy. Check with the Knox County building department for local rules.
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