Primary-Source Record · 2011-05-20

Austin-area severe weather on May 20, 2011

Hail up to 1.75 inches; wind up to 40 kt (46 mph). Counties: Bastrop, Caldwell, Hays, Travis. Every row below is a federal or NWS record; nothing on this page is an estimate.

NOAA Storm Events (certified) — 17

Time (local)CountyTypeMagnitudeLocationNOAA id
18:51TravisHail 0.88 Beecaves298189
18:54HaysHail 0.75 Mt Gaynor298191
18:55HaysHail 1 Driftwood298190
19:10TravisThunderstorm Wind 40 EG Austin Mabry298192
19:11TravisHail 0.75 Beecaves298193
19:18HaysHail 1 Driftwood298194
19:20HaysHail 1 Mt Gaynor298195
19:32HaysHail 1 Driftwood298196
19:50HaysHail 0.88 Driftwood298197
20:01CaldwellHail 0.88 Larremore298198
20:15BastropHail 1.75 Butler298199
20:17BastropHail 1 Elgin298200
20:25BastropHail 1 Butler298201
21:16BastropHail 0.75 Cedar Creek298203
21:17BastropHail 1.25 Cedar Creek298202
21:32BastropHail 1 Rockne298204
21:50CaldwellHail 1 Lockhart298205

Source: NOAA National Centers for Environmental Information, Storm Events Database (public domain) · data.json · data.csv

What this date means for a roof

A recorded storm is where to start asking, not the answer. Damage is decided by an inspection of the roof itself — dated photographs, measurements, and collateral evidence such as dented gutters, vents, or soft metals — and an insurer verifies the date of loss against that damage pattern, not against a weather record alone.

What Zilker Roofing does not do, as formal hash-verified policy:

Request an inspection · All dated storm pages · The full Austin storm record

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