NOAA-verified historic hailstorm
July 15, 1958 Prowers County, CO Hailstorm
2 hail events recorded between 10:00 PM GMT-7 and 10:00 PM GMT-7. Peak hail size: 2".
Storm map
Each pin marks one NOAA-recorded hail event. Larger pins = larger hail.
Source: NOAA Storm Events Database (NCEI). Coordinates are NWS-reported event locations.
Was your property in this storm's path?
Enter your Prowers County address to see if hail from July 15, 1958 hit your specific street. Free, no signup, results in seconds.
Check My Address — FreeHail size distribution
Cosmetic damage potential
Damages asphalt shingles
Severe roof damage
Total roof replacement
Individual NOAA event records
Every record carries a unique NOAA event ID adjusters can independently verify.
| Time (MT) | Hail size | Location | NOAA event ID |
|---|---|---|---|
| 10:00 PM GMT-7 | 2" | 38.200, -102.580 | 9992440 |
| 10:00 PM GMT-7 | 2" | 38.200, -102.580 | 9992441 |
Frequently asked questions
What was the largest hail size on July 15, 1958 in Prowers County?+
NOAA's Storm Events Database recorded a peak hail size of 2" during the July 15, 1958 storm in Prowers County, Colorado. Hail at 2" causes significant damage to asphalt shingle roofs and often requires partial or full replacement. Prowers County properties in the storm path are likely candidates for insurance claims.
How many hail events were recorded during this storm?+
2 individual hail observations were recorded in Prowers County on July 15, 1958, between approximately 10:00 PM GMT-7 and 10:00 PM GMT-7. Each NOAA record represents either a ground-verified observation by a National Weather Service spotter or a radar-derived measurement.
Can I file an insurance claim for hail damage from this storm?+
Most homeowner's insurance policies in Colorado cover hail damage under the "wind and hail" peril. Standard policies require claims to be filed within 1-2 years of the date of loss, though this varies by carrier. The July 15, 1958 date is the NOAA-recorded date of loss for properties in Prowers County. If your roof shows damage and your address was in the storm path, scheduling a free professional inspection is the standard first step.
How accurate is NOAA's hail size measurement?+
NOAA combines ground-verified reports (physically observed and measured hailstones reported by trained spotters, NWS offices, or law enforcement) with NEXRAD radar-derived size estimates. Ground reports are the gold standard. Radar estimates carry approximately a ±0.25 inch margin compared to ground measurements. Each event in NOAA's Storm Events Database has a unique event ID that adjusters can independently verify.
Was my property in the storm path?+
The storm map above shows the location of each individual hail event in this storm. Enter your address in the HailScore lookup tool for a property-level report that checks all four NOAA publishers (Storm Events, NEXRAD radar, MRMS, CoCoRaHS) against your exact coordinates.