Hail in Chicago on Friday, July 28, 2023
The Storm Prediction Center logged 8 hail reports in Chicago on Friday, July 28, 2023, between 7:30 pm and 8:05 pm CDT, in 1 of the metro's 7 counties. The largest was 1.75 inches at Winfield (DuPage County) at 7:50 pm. NOAA radar flagged 2,467 hail signatures inside the metro that day: 701 rated a 100% chance of hail and 503 with a maximum expected size of 1 inch or more.
Where hail was reported
Reports came from 6 places in DuPage County, named as the National Weather Service described them.
- Carol Stream 2 reports, up to 1.25 in
- Winfield 2 reports, up to 1.75 in
- Glen Ellyn 1 report, up to 1.00 in
- Warrenville 1 report, up to 1.25 in
- West Chicago 1 report, up to 1.00 in
- Wheaton 1 report, up to 1.00 in
Every hail report logged that day
Times are Central Daylight Time. Sizes are in inches, as reported. The comment is the National Weather Service's text as published in the Storm Prediction Center's daily log.
| Time | Size | Place | County | NWS comment |
|---|---|---|---|---|
| 7:30 pm | 1.25 | 1 E Warrenville | DuPage | Report from mPING: Half Dollar (1.25 in.). (LOT) |
| 7:43 pm | 1.50 | 1 SSW Winfield | DuPage | Minor leaf damage and car dents. (LOT) |
| 7:47 pm | 1.00 | West Chicago | DuPage | Quarter size hail near IL-59 and Washington in West Chicago. (LOT) |
| 7:50 pm | 1.75 | Winfield | DuPage | Just west of central DuPage hospital. (LOT) |
| 7:55 pm | 1.00 | 1 ENE Wheaton | DuPage | In Wheaton near College Ave Metra. (LOT) |
| 8:00 pm | 1.25 | 1 W Carol Stream | DuPage | Picture from Twitter. (LOT) |
| 8:02 pm | 1.00 | 1 SW Glen Ellyn | DuPage | Report from mPING: Quarter (1.00 in.). (LOT) |
| 8:05 pm | 1.25 | 1 W Carol Stream | DuPage | Just west of Carol Stream. (LOT) |
What NEXRAD radar recorded inside the metro
2,467 signatures from 11 radars fell inside the metro's counties on this local date, counting every cell the algorithm rated from a 10% to a 100% chance of hail; 701 were rated 100% and 5 had a maximum expected size of 2 inches or more.
| Radar | Signatures | Rated 100% | 1 in or more | 2 in or more | Largest expected | First | Last |
|---|---|---|---|---|---|---|---|
| KORD | 605 | 103 | 94 | 3 | 2.00 in | 2:04 am | 11:46 pm |
| KMDW | 550 | 178 | 148 | 1 | 2.25 in | 2:30 am | 11:39 pm |
| KMKE | 288 | 51 | 15 | 0 | 1.25 in | 2:04 am | 10:48 pm |
| KMKX | 233 | 85 | 55 | 1 | 2.00 in | 2:02 am | 11:33 pm |
| KDVN | 196 | 82 | 52 | 0 | 1.75 in | 2:04 am | 11:46 pm |
| KLOT | 189 | 69 | 58 | 0 | 1.75 in | 2:05 am | 11:33 pm |
| KILX | 171 | 66 | 43 | 0 | 1.75 in | 3:30 am | 11:37 pm |
| KIWX | 141 | 44 | 23 | 0 | 1.50 in | 2:46 am | 11:33 pm |
| KGRR | 68 | 20 | 15 | 0 | 1.50 in | 2:24 am | 11:36 pm |
| KGRB | 16 | 3 | 0 | 0 | 0.75 in | 2:04 am | 11:54 pm |
| KIND | 10 | 0 | 0 | 0 | 0.75 in | 4:37 am | 11:34 pm |
Each radar that scans a storm writes its own signature about every 4 to 6 minutes, so one storm produces many rows and overlapping radars count it more than once. The raw rows for this day are in NOAA's Severe Weather Data Inventory.
Check an address for July 28, 2023
See, free, how many hail signatures NOAA recorded within 1, 3 and 5 miles of one address that day and the nearest spotter report. The full report is $19.
Spotter reports come from the Storm Prediction Center's preliminary daily logs, grouped here by local calendar date (Central Daylight Time) and by county: a report counts for Chicago when its coordinates fall inside one of the metro's 7 counties (Cook, DuPage, Kane, Lake, McHenry, Will and Kendall counties). Radar signatures are estimates from the Hail Detection Algorithm, not measured stones; they include every cell it rated, from a 10% to a 100% probability of hail. How these pages are built.