Hail Storm Summary for Powell, WY

Powell, Wyoming has experienced 527 documented hail events within a 15-mile radius since 2015, according to NOAA NEXRAD radar data. The largest recorded hailstone measured 2.25 inches in diameter, and the average hail size across all events is 0.84 inches. The most recent significant event was detected on October 12, 2025. On average, the Powell area sees approximately 53 hail events per year, placing it among the most hail-prone cities in Wyoming.

Based on NOAA radar data, properties in Powell face a high risk of hail damage. Of the recorded events, 331 produced hail under 1 inch, 192 produced hail between 1 and 2 inches (sufficient to damage standard asphalt shingles), and 4 produced hail over 2 inches (capable of causing severe structural damage). Storms producing hail over 2 inches have been recorded 4 times in the Powell area.

Given the high storm frequency in Powell, homeowners should schedule a professional roof inspection at least once a year, ideally before hail season begins (June through August). Properties with asphalt shingle roofs are especially vulnerable. If your roof is more than 10 years old and has been through multiple hail events, there is a strong chance of hidden damage that qualifies for an insurance claim. Document any storm damage promptly, as most Wyoming insurance policies require claims within 1 to 2 years of the event. Typical repair costs in the Powell area range from $8,000–$25,000+ for full roof replacement.

PARK County, WY

Hail Damage Risk in Powell, WY

10 years of verified NOAA hail data for Powell and surrounding areas. 527 events recorded since 2015.

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Total Hail Events

527

Within 15 miles

Largest Hail

2.25"

Severe, likely roof damage

Most Recent Event

October 12, 2025

Last recorded hail

Avg Hail Size

0.84"

Across all events

Hail Storm Summary for Powell, WY

Storm History

Total events527
Largest hailstone2.25"
Average size0.84"
Most recentOctober 12, 2025
Per year avg53

Data from 2015 to present, 15-mile radius

Risk Assessment

High Risk
Under 1"331 (63%)
1" to 2"192 (36%)
Over 2"4 (1%)

Hail 1"+ can damage shingles. Over 2" causes severe structural damage.

What You Should Do

Schedule a professional roof inspection at least once a year, ideally before hail season (June through August). Properties with asphalt shingle roofs are especially vulnerable. If your roof is more than 10 years old and has been through multiple hail events, there is a strong chance of hidden damage that qualifies for an insurance claim. Typical repair costs range from $8,000–$25,000+ for full roof replacement.

Most Wyoming insurance policies cover hail damage
File claims within 1-2 years of the storm date
Free inspections available from local contractors

Hail Events Near Powell

100 events within 15 miles · Click for details

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Significant Hail Events

Events with hail 1" or larger near Powell

DateHail SizeCountyDistance
Oct 12, 20251"10.5 mi
Jul 18, 20251.5"14.6 mi
Jul 18, 20251.5"13.6 mi
Jul 18, 20251.25"12.7 mi
Jul 18, 20251.25"12.0 mi
Jul 18, 20251.25"12.9 mi
Jul 18, 20251"12.3 mi
Jul 18, 20251.25"6.3 mi
Jul 18, 20251.25"5.7 mi
Jul 18, 20251.5"8.1 mi
Jul 18, 20251.25"9.2 mi
Jul 18, 20251.5"9.2 mi
Jul 18, 20251.25"10.9 mi
Jul 18, 20251.25"10.4 mi
Jul 18, 20251"10.8 mi
Jul 18, 20251"12.8 mi
Jul 18, 20251.25"14.0 mi
Jun 16, 20251.25"14.3 mi
Jun 16, 20251"13.4 mi
Jun 15, 20251"3.3 mi
Jun 15, 20251"3.6 mi
Jun 15, 20251"4.6 mi
Jun 15, 20251"6.0 mi
Aug 20, 20241"8.6 mi
Aug 20, 20241"8.0 mi

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Powell Hail Damage FAQ

How many hail events has Powell, WY experienced?+

Powell, WY has recorded 527 hail events within a 15-mile radius since 2015, based on NOAA NEXRAD radar data. With over 527 events in a decade, Powell is considered a high-risk hail area.

What is the average hail size in Powell?+

The average hail size recorded near Powell is 0.84 inches. The largest single event recorded reached 2.25 inches. Hail above 1 inch is capable of cracking shingles, and hail above 1.75 inches can cause severe structural damage requiring full roof replacement.

When is hail season in Wyoming?+

Hail season in Wyoming typically runs June through August. During these months, atmospheric conditions create powerful convective thunderstorms capable of producing large hail. Powell residents should inspect their roofs after any storm and consider a professional inspection each spring.

Does insurance cover hail damage in Wyoming?+

Yes, standard homeowner's insurance policies in Wyoming typically cover hail damage as part of the "wind and hail" peril. Most policies require you to file a claim within 1–2 years of the storm date, though this varies by insurer and state law. It's important to document damage promptly. Even if damage isn't visually obvious from the ground, a licensed roofer can identify hail impacts during a free inspection.

How do I check my roof for hail damage in Powell?+

Start by looking for obvious signs from the ground: dented gutters, dings on metal vents, chipped paint, or broken skylight glass. On the roof itself, hail damage appears as dark circular bruises or "spatter" marks on asphalt shingles where granules have been knocked away. Because roof damage is often subtle, many Powell homeowners miss it without a professional inspection. If HailScore shows events of 1 inch or larger near your property, scheduling a free inspection with a local contractor is strongly recommended.

What is a HailScore and how is it calculated?+

A HailScore is a 0–100 risk index that measures historical hail activity near a specific property. The score is calculated from five factors derived from NOAA NEXRAD radar data: storm frequency (how many events), recency (recent storms score higher), hail size (larger hail = more damage potential), cumulative damage (repeated storms compound wear), and proximity (storms closer to your address weigh more). A score of 0–30 is low risk, 31–60 is moderate, 61–80 is significant, and 81–100 indicates a high-impact hail history.

Should I get a roof inspection in Powell?+

If your property is in Powell and any nearby storms have produced hail of 1 inch or larger, a free professional roof inspection is highly recommended. Given that Powell has recorded hail up to 2.25 inches, there is a real probability of roof damage that insurance may cover. Many roofing contractors in WY offer free inspections and can document damage for your insurance claim at no upfront cost.

How much does hail damage roof repair cost in Powell?+

Hail damage repair costs in Powell typically range from $8,000–$25,000+ for full roof replacement. The final cost depends on roof size, pitch, material type (asphalt shingles vs. metal vs. tile), and the extent of damage. In most cases, if hail damage is confirmed, your homeowner's insurance will cover the cost of repair or replacement minus your deductible. Getting multiple contractor estimates before filing a claim is a smart approach.

What NOAA data does HailScore use for Powell?+

HailScore uses data from the NOAA NEXRAD radar network (Next Generation Weather Radar), specifically the SWDI (Severe Weather Data Inventory) maintained by NCEI (National Centers for Environmental Information). For Powell, we analyze all radar-detected hail events within a 15-mile radius from 2015 to 2025, totaling over 527 verified events. Each record includes the storm's timestamp, geographic coordinates, and measured hail diameter in inches.

How accurate is HailScore data for Powell?+

HailScore data comes directly from NOAA's NEXRAD radar network, which is the same system used by the National Weather Service for official storm reporting. Radar detection has a small margin of error. Hail size estimates can vary by ±0.25 inch compared to ground truth measurements. We use the 15-mile radius to capture hail that may have affected your specific neighborhood even if the storm center was nearby. For the most precise assessment of your individual property, a physical roof inspection by a licensed contractor is always recommended.

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Weather data provided by NOAA National Weather Service and Storm Prediction Center. This product is not affiliated with or endorsed by the U.S. Government. Data covers 2015-2025 within a 15-mile radius of Powell city center.