McKinney hail storm history
Collin County·NOAA NCEI Storm Events Database·~75-day publication lag
McKinney, located in Collin County, has recorded 32 hail events of at least 1 inch in diameter over the past 10 years, with 17 of those classified as significant storms producing hail 1.5 inches or larger. The city's position in the heart of Tornado Alley means supercell thunderstorms regularly track northeast off the Llano Estacado, creating conditions favorable for large-diameter hail. The largest recorded hailstone in McKinney measured 2.5 inches—roughly the size of a tennis ball.
Hail season in McKinney peaks from April through June, with May producing the most frequent large-diameter hail events. Secondary hail activity occurs in March and July as storm systems transition into and out of the primary season. An average of 3.2 hail events per year strike the McKinney area, making spring the critical period for roof and property inspections.
Annual frequency — last 10 years
When hail hits — monthly pattern
Avg events per month · all years · NOAA data
All recorded hail events
Of 259 recorded events, 99 (38%) reached 1.5" or larger — the threshold for likely functional damage on standard asphalt shingles.
Numerous social media reports indicated small hail up to the size of nickels, covering the ground in…
Reported via mPing.
Report from mPING: Quarter (1.00 in.).
A trained spotter reported penny sized hail in Van Alstyne.
Reported via mPING northwest of Allen.
Emergency management reported 1.25 inch hail in Sherman near Washington and 1417.
Reported via mPING 2 miles north of Wylie.
Emergency Management reported quarter sized hail in Tom Bean.
Trained spotter reported golf ball sized hail northeast of Princeton.
Reported via mPing.
Leonard VFD reported golf ball sized hail in the city of Leonard.
Emergency manager reported 1 inch hail in Van Alstyne.
Report from mPING: Quarter (1.00 in.).
Report from MPing.
Report from mPING: Half Dollar (1.25 in.).
Reported via mPing.
Quarter size hail was reported in Sherman.
Two-inch diameter hail was reported in Farmersville.
A 2.5 inch hail stone was measured near Greenville Avenue and Exchange Parkway in Allen.
Amateur radio reported 1-inch diameter hail in Randolph, TX.
Emergency management reported quarter sized hail in Southmayd.
Reported via mPing.
Golf ball size hail was reported at the intersection of U.S. Highway 75 and State Highway 56 in Sher…
A trained spotter reported golf ball sized hail in Farmersville, TX.
Penny sized hail and a wind gust to 48 mph was reported between Howe and Luella.
Golf ball sized hail was reported near Allen.
A trained spotter reported quarter sized hail in Celeste, TX.
Amateur radio reported half-dollar sized hail about a mile west of Kingston, TX.
A public report indicated quarter sized hail in Southmayd, TX.
A public report indicated half-dollar sized hail in Princeton, TX.
Reported via mPing.
A public report indicated quarter sized hail about a mile west of Bells, TX.
A public report indicated quarter sized hail approximately 2 miles west-northwest of the city of She…
Fire and rescue reported ping pong ball sized hail near the city of Nevada, TX.
Quarter size hail was reported near Caddo Mills.
A report of nickel size hail was received.
A public report indicated nickel-sized hail in the city of Sherman, TX.
Quarter size hail was reported at SH56 and US75 in Sherman.
A trained spotter reported quarter-sized hail immediately north-northeast of the city of Melissa, TX…
A social media report indicated half-dollar size hail in the city of McKinney, TX.
A trained spotter reported dime size hail just south of the city of Anna, TX.
Amateur radio reported penny size hail in the city of Greenville, TX.
Emergency management reported pea to penny size hail in the city of Sherman, TX.
Amateur radio reported quarter-size hail in the city of Celeste, TX.
A social media report indicated tennis-ball size hail near the intersection of White Stallion Trail …
A trained spotter reported quarter-sized hail approximately 3 miles north-northwest of the city of A…
A trained spotter reported quarter sized hail approximately 4 miles south of the city of Van Alstyne…
A trained spotter reported ping-pong ball sized hail in the city of Lowry Crossing, TX.
Emergency management reported quarter-sized hail at the Courthouse in the city of McKinney, TX.
Amateur radio reported quarter-sized hail in the city of Leonard, TX.
Amateur radio reported half-dollar sized hail in the city of Tom Bean, TX.
Broadcast media reported golfball sized hail near the intersection of Elldorado Parkway and Stonebri…
Emergency Manager reported golfball size hail near Celeste.
Emergency Manager reported golf ball size hail in Mckinney.
A social media report indicated one inch diameter hail in McKinney, TX.
A trained spotter reported quarter-sized hail 3 miles south of the city of Celeste, TX.
A trained spotter reported quarter-sized hail approximately 3 miles north of Celeste, TX.
Just over 1 sized hail was reported 2 miles southwest of Anna.
Nickel sized hail was reported in Tom Bean.
A public report indicated half-dollar sized hail in South McKinney.
Nickel sized hail reported 2 miles southwest of Blue Ridge.
Hail event counts for McKinney are derived from NOAA Storm Data records for Collin County, which includes 35 documented events. Because hail reporting depends on trained spotters and property damage reports, smaller hail events and storms in unpopulated areas may not appear in official records.
NOAA Storm Events Database source