37 mph measured gust 73 mi S of Morongo Lodge
Lucky Five SDGE weather station recorded a thunderstorm wind gust of 43 mph at 240 pm August 11, 2024.
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TPO is a heat-welded single-ply membrane common on commercial and low-slope roofs. It is white and reflective, and seam quality is what mostly decides its lifespan.
For San Diego County, NOAA lists 2 hail reports (largest 0.5 in), 13 damaging-wind reports (up to 56 mph) and 0 tornado reports from January 2024 to June 2026. These count reports, not damaged roofs.
Lucky Five SDGE weather station recorded a thunderstorm wind gust of 43 mph at 240 pm August 11, 2024.
An eucalyptus tree was blown over and blocked all lanes on Sweetwater Road in Bonita. Wind gusts of 30-35 mph were recorded at the time. Severe trees were downed along I-805 and required emergency clean up by Caltrans. Strong winds from...
Pine Valley Horse mesonet reported gusts 53 mph from thunderstorms along Interstate 8.
Source: NOAA NCEI Storm Events Database, data through Jun 30, 2026. All storm reports for La Mesa
| Job | Typical US range |
|---|---|
| Flat roof (TPO / EPDM), average home | $5,000 – $12,000 |
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.
A thermoplastic polyolefin single-ply membrane whose seams are heat-welded; common on flat commercial roofs.
Both work. TPO is heat-welded and reflective; EPDM is a rubber membrane with glued or taped seams. Installer experience matters more than the name.
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 San Diego County building department for local rules.
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