69 mph measured gust 6 mi WNW of Fortuna
Fortuna NDAWN reported wind gusts up to 79 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 Divide County, NOAA lists 12 hail reports (largest 3 in), 11 damaging-wind reports (up to 69 mph) and 1 tornado report from January 2024 to June 2026. These count reports, not damaged roofs.
Fortuna NDAWN reported wind gusts up to 79 mph.
Grenora NDAWN reported wind gusts up to 67 mph.
Storm chaser reported brief tornado at this approximate location. No known damage to evaluate and no other information available. By National Weather Service policy the tornado is rated EF-U (Unknown).
Source: NOAA NCEI Storm Events Database, data through Jun 30, 2026. All storm reports for Crosby
| 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 Divide County building department for local rules.
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