NOAA-verified historic hailstorm
August 11, 1991 Morgan County, CO Hailstorm
On August 11, 1991, NOAA's Storm Events Database recorded hail in the 2.5″+ size class in Morgan County, Colorado, across 1 hail event. These are records of hail exposure, not of damage: size is a class, not a measurement, and a hail record near a property is not a finding that the property was damaged.
Peak hail size: 4", recorded between 7:13 PM MDT and 7:13 PM MDT.
On August 11, 1991, NOAA recorded hail up to 4" in Morgan County, Colorado — 1 hail event between 7:13 PM MDT and 7:13 PM MDT. Source: NOAA Storm Events Database (NCEI), via HailScore. Data current as of October 5, 2026.
The 1st-largest hailstorm recorded in Morgan County since 2015 — out of 54 separate hail days on NOAA's record.
The biggest on record: May 10, 2023 — 4" hail.
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.
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Official Hail History Report
Every hail event recorded within 1 mile of your address over the past 10 years — each with its date, size, distance, and government source ID — plus an optional date-of-loss check for one specific storm. Built to hand to an adjuster, a buyer, or your own file.
It documents the storm record for an address. It is not a roof inspection or a damage assessment.
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Hail history for cities in Morgan County
Every recorded storm for each area, not just this one:
Hail size distribution
Below the 1″ inspection threshold
Can bruise asphalt shingles
Can crack shingles and dent soft metal
Inspection is the normal next step
Individual NOAA event records
Every record carries a unique NOAA event ID adjusters can independently verify.
| Time | Hail size | Location | NOAA event ID |
|---|---|---|---|
| 7:13 PM MDT | 4" | 40.520, -103.800 | 9988083 |
Frequently asked questions
Did it hail in Morgan County, Colorado on August 11, 1991?+
On August 11, 1991, NOAA's Storm Events Database recorded hail in the 2.5″+ size class in Morgan County, Colorado, across 1 hail event. These are records of hail exposure, not of damage: size is a class, not a measurement, and a hail record near a property is not a finding that the property was damaged.
What was the largest hail size on August 11, 1991 in Morgan County?+
NOAA's Storm Events Database recorded a peak hail size of 4" during the August 11, 1991 storm in Morgan County, Colorado. Hail at 4" is large enough that a professional roof inspection is the normal next step for roofs in the storm path. Only a licensed roof inspection can determine whether a specific roof was damaged; coverage depends on the policy and carrier.
How many hail events were recorded during this storm?+
1 individual hail observations were recorded in Morgan County on August 11, 1991, between approximately 7:13 PM MDT and 7:13 PM MDT. 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?+
Many standard homeowner's policies include hail under a "wind and hail" peril. Claim deadlines and coverage rules vary by carrier and policy — confirm yours with your insurer or, in Colorado, the Colorado Division of Insurance (doi.colorado.gov). August 11, 1991 is the date NOAA recorded hail in Morgan County — a record of exposure an adjuster can check against your address, not a finding that any property was damaged. If your address was in the storm path, a professional roof inspection is the standard first step.
How accurate is NOAA's hail size measurement?+
NOAA combines ground-verified reports (hail reported by trained spotters, NWS offices, law enforcement and others) with NEXRAD radar-derived size estimates. Ground reports are the stronger evidence of what actually fell. Radar estimates are a class rather than a measurement: MESH is tuned so that roughly 75% of measured hail comes in at or below the estimate — a bias, not a symmetric error bar. 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 searches NOAA Storm Events, NEXRAD radar and MRMS radar, plus CoCoRaHS volunteer reports, around your exact coordinates.