Check for earthquakes near you

Here's how to check for recent earthquakes near you with ChatGPT or Claude: every quake near a city in the last 30 days from USGS, and the strongest one.

1. 1

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2. 2

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   ChatGPTClaudeMCP & CLI

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   @Firecrawl Use Alexandria to list every earthquake within 100 miles of San Francisco in the last 30 days, and tell me the strongest one.

   Open in ChatGPT with this prompt
3. 3

   What came back

   Claude Code (Claude Opus 5.5) sent back, word for word:

   There were 1,293 earthquakes within 100 miles of San Francisco in the last 30 days (Sept 20 – Oct 20, 2026), from the USGS catalog via Firecrawl Alexandria. The strongest was a magnitude 3.3 about 27 km west-southwest of Westley, CA.

   Strongest: M 3.32

   • When: Sept 27, 2026, 7:21 AM PDT (14:21:50 UTC)
   • Where: 27 km WSW of Westley, CA, in the Diablo Range southeast of the Bay Area
   • Depth: 3.4 km
   • Felt reports: 15
   • USGS event: https://earthquake.usgs.gov/earthquakes/eventpage/nc75443097

   A magnitude 2.6 aftershock hit the same spot 19 minutes later.

   Every quake of M2.5 or higher (9 total)

   Mag	Date (UTC)	Location	Depth	Felt reports
   3.32	Sep 27 14:21	27 km WSW of Westley	3.4 km	15
   3.05	Oct 15 06:06	7 km NW of The Geysers	2.5 km	1
   2.88	Sep 30 21:07	8 km ESE of Cloverdale	5.4 km	15
   2.60	Sep 27 14:40	26 km WSW of Westley	4.1 km	0
   2.56	Sep 23 16:00	2 km NW of Hollister	7.4 km	24
   2.54	Oct 15 17:57	10 km ESE of Gilroy	5.1 km	3
   2.53	Sep 30 20:48	1 km SSW of Anderson Springs	2.4 km	6
   2.51	Sep 29 16:06	5 km W of Yountville	7.9 km	51
   2.51	Oct 20 16:23	2 km NW of The Geysers	0.5 km	1

   All 1,293 by size

   Magnitude	Count
   Below 0	8
   0.0 – 0.9	714
   1.0 – 1.9	530
   2.0 – 2.9	39
   3.0 – 3.9	2

   • Mostly tiny quakes: nearly all of them are microquakes below M2, many at The Geysers geothermal field. Nothing reached M4.
   • Different scales: USGS measured the M3.32 on the moment magnitude scale and most of the others on duration or local scales. Small differences, like 3.32 against 3.05, are roughly comparable, not exact.
   • Search area: a 160.9 km (100-mile) circle centred on downtown SF (37.7749, −122.4194).

   I didn't paste all 1,293 rows here. I can save the full list to a CSV if you want it.

   Sources usedUSGSOct 20, 2026