Storm · Denver metro

The hail of Jul 20, 2023

Hail of 1″ and up crossed 8,818 roofs in Denver metro on Jul 20, 2023. Of the 1,832 in offices whose permits we read, 181 have a roofing permit since and 1,651 have none, counted through Jul 19, 2024.

The hail

Bands
1″ and up: 8,818 roofs · 1.5″ and up: 483 roofs · 2″ and up: 5 roofs
Confirmed
Aug 19, 2023, when its roofing permits passed the share that storms with no real damage reach.

Where it fell

Shaded bands: where the hail fell, darker for bigger stones. Drawn from the map of Nov 2, 2026.

Permit pace

Against storms its size at the same age: 1.7×

The most roofs permitted in one week: 13, in week 13.

Roofs permitted each week since the storm
WeekRoofs permitted
11
23
33
45
55
61
76
85
95
1010
112
123
1313
146
155
160
175
185
192
205
214
224
230
241
252
260
273
281
294
301
313
320
331
342
353
360
370
388
396
402
417
424
433
442
457
463
475
482
496
501
513
523
530

What was read

Offices
Adams County, Lakewood, Littleton
Counties
Adams, Arapahoe, Douglas, Jefferson
Window
Permits issued from Jul 20, 2023 through Jul 19, 2024. The storm has had its year, so these counts no longer change.
Left out
6,986 roofs under the hail sit where we do not read a permit on file, so they are in no count but the first.
Source
Read from the cities' own permit records. No owner, address or roofing firm is shown here.

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