Recent Major Storm Days in Idaho: Hail and Wind History

By StormAuditor Editorial Team · Published 2026-07-20 · Updated 2026-08-11

Based on public NOAA and National Weather Service records, published under StormAuditor's methodology and data-source standards. Radar-derived hail sizes are estimates unless attributed to a ground report.

Damage-threshold ranges in this article are general guidance synthesized from industry and federal research — IBHS building-performance research, NWS severe criteria, and product standards such as UL 2218 (hail impact resistance) and ASTM D3161/D7158 (shingle wind ratings). Actual performance depends on product rating, age, installation quality, exposure, and impact characteristics — thresholds describe when damage becomes possible, not when it occurs.

Understanding Idaho's recent major storm days, including significant hail and wind events, is crucial for property owners and those involved in date-of-loss research.

Idaho has diverse geography and varied weather. That includes significant hail and wind events. Property owners, insurance professionals, and contractors can benefit from this weather history. It helps them understand possible property damage. StormAuditor provides detailed historical weather data. It helps you uncover the dates and traits of past severe weather.

What are Major Storm Days?

Major storm days feature severe weather that meets or exceeds official National Weather Service (NWS) criteria. This includes:

  • Hail of 1.00 inch (quarter size) or larger,
  • Wind gusts of 58 mph (50 knots) or greater, or
  • The occurrence of a tornado.

These events can cause major property damage. Impacts range from cosmetic dents to functional failures on roofs and structures.

For example, asphalt shingles typically begin showing functional hail damage from impacts of 1.00–1.25 inches. Wind gusts above 75 mph can lead to widespread shingle blow-off. Older roofing materials are most at risk. Knowing these thresholds is key to reading storm data.

How StormAuditor Measures and Estimates Hail and Wind Events

StormAuditor uses a strong method to build accurate historical weather estimates. Our SAHE-2 (Storm Auditor Hail Estimate v2) system mainly uses MRMS MESH (Maximum Estimated Size of Hail) swaths. These determine hail sizes at a property location. SPC (Storm Prediction Center) storm reports and NWS severe thunderstorm warnings add support. This approach pinpoints not just that hail occurred, but its estimated size at your property.

For wind, our SAWE-2 (Storm Auditor Wind Estimate) method creates a detailed background wind field. It is built from high-resolution rapid refresh (HRRR) models and daily peak gust readings from NOAA ASOS/AWOS stations. We then apply an objective analysis. It uses measured wind gusts from these stations and NWS Local Storm Reports (LSRs) to refine wind speed estimates. Note: StormAuditor provides estimations based on these broad data sources, not direct measurements at every specific point.

Our system reports data 'at location' if your address falls within a warning polygon or hail swath (with a 0.25-mile buffer). If no at-location data exists, we show nearby information within 1, 3, or 10 miles for context. Learn more about our approach at /methodology/wind and /methodology/hail.

Recent Notable Storm Days in Idaho

StormAuditor carefully collects and processes National Weather Service (NWS) storm reports and other data. This helps us identify significant weather events. Here are some recent storm reports in Idaho that show impactful weather, including strong wind gusts and hail:

  • July 19, 2026 — 1 NW Ucon — TSTM WND GST 45.0 mph
  • July 19, 2026 — 2 NW Idaho Falls — TSTM WND GST 45.0 mph
  • July 19, 2026 — 5 SSE Roberts — TSTM WND GST 45.0 mph
  • July 19, 2026 — 3 E Idahome — TSTM WND GST 47.0 mph
  • July 18, 2026 — 9 SSW Mud Lake — TSTM WND GST 52.0 mph
  • July 18, 2026 — 12 E Howe — TSTM WND GST 57.0 mph
  • July 18, 2026 — 7 S Howe — TSTM WND GST 56.0 mph
  • July 18, 2026 — 6 SE Albion — NON-TSTM WND GST 52.0 mph
  • July 17, 2026 — 2 SSE Weippe — HAIL 1.0 inch

These reports highlight specific cases across Idaho. Strong winds, some approaching severe thresholds, and severe hail were observed. Even wind gusts below the 58 mph severe threshold can cause damage. Older or weaker structures are most at risk.

Practical Guidance for Date of Loss Research in Idaho

Investigating possible weather-related property damage? Accurate historical storm data is essential. You may be a homeowner, an insurance adjuster, a contractor, or an attorney. Either way, StormAuditor can streamline your date of loss research. Knowing the exact timing and strength of past storms informs decisions about inspections, claims, and repairs.

How to Research a Date of Loss in Idaho

1. Start with the Address: Use our /address-lookup tool to get a property-specific historical weather report. It details any severe hail, significant wind gusts, and NWS warnings that crossed your location.

2. Explore the Date: Have a specific date in mind? Our /date-of-loss-weather-research page walks you through event timelines and data for that period. You can also check general weather for a past date with our /weather-on-this-date feature.

3. Review Hail Swaths: For hail questions, the /hail explorer maps MRMS MESH hail swaths across Idaho. It shows areas possibly hit by different hail sizes.

4. Analyze Wind Events: The /wind explorer covers historical wind gusts and severe thunderstorm warnings for the state. It helps you see regional wind patterns and specific event strengths.

Cross-reference these tools to build a full picture of the weather at a property on a given date. This supports accurate, informed decisions.

Limitations

StormAuditor provides powerful insights, but weather data has built-in limits. Radar-derived hail estimates (MESH) can sometimes under-estimate wet hail size. They can also over-estimate in areas of very high reflectivity. Station-based wind readings are reliable, but they are point measurements. They may miss a microburst or localized high gust between stations. Tornadoes are very localized. That makes them hard to map perfectly after the fact. Also, a property inside an NWS warning polygon was under a _warning_. That does not confirm it experienced the peak conditions in the warning. StormAuditor provides estimates of weather events. We do not offer legal, insurance, or engineering advice. We do not confirm damage causation. Qualified experts are needed for that. Read more on our /limitations page.

Related StormAuditor Tools

FAQ

When was the last major hail storm in Idaho?

According to recent storm reports, Idaho saw a hail event of 1.0 inch in size on July 17, 2026, near Weippe. Use our /hail explorer to search for other significant hail events.

How do I find storm history for my Idaho address?

Use StormAuditor's /address-lookup tool. Enter your property address to generate a detailed report of past hail, wind, and warning events.

What is considered a severe wind gust in Idaho?

The National Weather Service generally defines a severe wind gust as 58 mph (50 knots) or higher. Gusts around this speed can cause property damage. Even strong gusts below this threshold can too.

Can StormAuditor confirm if my roof was damaged by a storm?

StormAuditor provides detailed historical weather data. That includes estimated hail sizes and wind speeds at your location. This data can inform talks with qualified inspectors and engineers. StormAuditor does not determine damage causation or condition. We provide the weather context; an expert evaluates the damage.

What size hail typically causes damage to asphalt shingles?

Asphalt shingles typically begin showing functional hail damage with impacts from 1.00 inch to 1.25 inches. Older or softer shingles might show damage from smaller hail sizes. Hail of 1.75 inches or larger can commonly cause window breakage.

Where can I learn more about StormAuditor's data sources?

For a complete list of the data sources StormAuditor uses, visit our /data-sources page. We rely on trusted sources like NOAA, SPC, NCEI, and IEM archives.