US Tech Automations

Other dated records Earthquake record archive 111 rows held

What is and is not in the earthquake archive

For a stretch of days we saved a dated copy of the USGS feed of the last 24 hours. This page says which days we hold, how many records each of those days brought, and the days we tried and got nothing. Reading was switched back on by a dated decision on 23 Aug 2026, after a pause, so this list can still grow. Our newest copy is 15 Oct 2026 and a newer one may follow.

Price
Not for sale
Built for
Researchers and reporters who need what USGS said on a past day
Read
About once a day. Reading again since 23 Aug 2026.
Newest sealed read
2026-10-15

Email us about the copies we holdNo card needed to ask. We reply with what we hold.

Newest sealed read: 2026-10-15. We read this source about once a day. We hold 310 sealed runs going back to 2026-06-23.

What this page is111 rows held · newest sealed read 2026-10-15

  • We hold 37,791 dated event records covering 26,355 separate events.
  • We ran 310 times, on 111 separate days, from 23 Jun 2026 to 15 Oct 2026. Reading was switched back on by a dated decision on 23 Aug 2026, after a pause, so this list can still grow.
  • 11,436 events were caught on two different days, which is what makes a before and after possible. 14,919 were caught once.
  • Of those 11,436, USGS had changed something on 998 by the second read.
  • We hold two or more dated copies for 11,436 of 26,355 events, and a single copy for the other 14,919. Where we hold two copies you can see what changed between them; where we hold one there is nothing to compare it with. USGS publishes this history itself, including superseded versions, so we do not charge for it.

Real rows out of our sealed copies

These are rows we read out of dated copies we keep ourselves. The live source shows today only, so once a row moves, what it said before is gone from the place you would go to look.

The last 12 days we ran, and how many event records each of them brought back. We ran on 111 separate days in all, and the last of them is the last there will be. 4 Oct 2026 – 15 Oct 2026
DayEvent records savedWhat happened
4 Oct 2026376sealed
5 Oct 2026417sealed
6 Oct 2026460sealed
7 Oct 2026512sealed
8 Oct 2026444sealed
9 Oct 2026481sealed
10 Oct 2026448sealed
11 Oct 2026356sealed
12 Oct 2026444sealed
13 Oct 2026503sealed
14 Oct 2026477sealed
15 Oct 2026208sealed
What USGS actually moved, counted across the 998 revisions we caught. 23 Jun 2026 – 15 Oct 2026
What USGS changedHow many events
review status808
depth in km678
longitude664
latitude659
significance score521
title509
magnitude481
place343
time it happened124
how the magnitude was measured31
kind of event20
alert level4
Where the records we hold are. Top 12 of 183 regions USGS named. sealed 23 Jun 2026 – 15 Oct 2026
Region USGS namedDated event records we hold
California14,452
Alaska9,057
Texas2,574
Hawaii2,385
Utah1,118
New Mexico1,080
Puerto Rico1,032
Washington831
Nevada592
Indonesia407
Mexico317
Oklahoma265

What this page cannot tell you

  • We can only show a change between two of our own reads. USGS can revise an event whenever it likes, so if it changed a number and changed it back between two of our reads, we never saw it and it is not on this page.
  • Each file we saved holds the last 24 hours of events, and our runs were about 24 hours apart, so two copies sealed on consecutive days usually share no event at all: only 58 of our 106 consecutive day pairs had one in common. A before and an after exists only where two runs landed closer together than usual.
  • 14,919 of the 26,355 events we hold were caught on one day only. There is no second reading to compare them with, so they cannot show a revision.
  • We ran on 14 Aug 2026, 15 Aug 2026, 16 Aug 2026, 17 Aug 2026 and the feed gave us nothing back, so there is no copy for those days. We say that rather than skipping over it.
  • 4 days inside our range have no run at all: 4 Jul 2026, 15 Jul 2026, 22 Aug 2026, 23 Aug 2026.
  • We hold what USGS published. We are not saying which reading is right. The current catalogue keeps only the later one.
  • We saved the USGS feed of the last 24 hours. An event older than that never entered the archive unless it was still in that feed on a day we read it.
  • This archive starts on 23 Jun 2026. Nothing before that day exists in it, and no amount of paying will produce it.

See the file we hold

You do not have to take our word for what is in the file. Here are 25 rows of the real thing, carrying all 7 of its columns, cut out of the dated copies we sealed ourselves. Nothing in it is made up and nothing in it is tidied up.

  • Open the 25 rows as a CSVA plain spreadsheet file. It saves to your machine rather than painting itself into a browser tab, and it opens in Excel, Numbers or Google Sheets.
  • The same 25 rows as JSONThe same rows again, laid out for reading with code.

Nothing on this page is for sale. The sample file is free to read, and so is every row on the page above it.

These 25 rows are a slice of the file, not the whole of it. What we cannot show you here is how far back it goes: the file goes back further than these rows do.

Ask what we hold for a named event

No pay button on this one yet. Email operations@ustechautomations.com. We reply with what we hold for this one, and with what we do not hold, before you spend anything.

Email us about the copies we hold

Say that you want What is and is not in the earthquake archive and we will tell you which weeks we hold for it and since when.

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