Storm · Denver metro

The hail of Jul 4, 2021

Hail of 1″ and up crossed 910 roofs in Denver metro on Jul 4, 2021. Of the 467 in offices whose permits we read, 29 have a roofing permit since and 438 have none, counted through Jul 4, 2022.

The hail

Bands
1″ and up: 910 roofs
Confirmed
Aug 23, 2021, 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: 1.1×

The most roofs permitted in one week: 3, in week 5.

Roofs permitted each week since the storm
WeekRoofs permitted
10
20
32
40
53
61
73
81
91
101
111
121
130
140
150
162
171
182
190
202
210
222
230
240
250
261
270
280
290
300
311
320
330
340
351
360
370
380
391
400
411
420
431
440
450
460
470
480
490
500
510
520
530

What was read

Offices
Douglas County (unincorporated), Parker
Counties
Douglas
Window
Permits issued from Jul 4, 2021 through Jul 4, 2022. The storm has had its year, so these counts no longer change.
Left out
443 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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