Hi Roger. You’re using a 29 day period aren’t you? I used the Yountville quake of 09/03/2000, which was a M>5.2. I did a search of all the M>5.0 quakes for the next 29 days within a radius of 5000Kms. This is what I found.

The Yountville quake occurred at 38.3770/-122.4137. There was a quake that was more then 2000Kms, but less then 3000Kms occurred at 57.50/-142.84. There were 2 quakes that occurred more then 3000Km, but less then 4000Kms. One was at 57.17/-154.30 the other at 57.84/-153.94.

Here is the list of all the quakes that occurred with 29 days of the Yountville quake. Take Care…Don in creepy town

FILE CREATED: Mon Mar 1 17:54:08 2004
Circle Search Earthquakes= 7
Circle Center Point Latitude: 38.377N Longitude: 122.413W
Radius: 5000.000 km
Catalog Used: PDE
Date Range: Year: 2000 - 2000 Month: 09/Day: 03 Month: 10/Day: 02
Magnitude Range: 5.0 - 7.0
Data Selection: Historical & Preliminary Data

CAT YEAR MO DA ORIG TIME LAT LONG DEP MAGNITUDE IEFM DTSVNWG DIST
NFPO km
TFS

PDE 2000 09 03 083630.09 38.38 -122.41 10 5.20 MLNC 7C.. ....... 0
PDE 2000 09 05 174826.08 51.47 -178.44 33 5.40 mb GS 4F.G ....... 4533
PDE 2000 09 10 235659.49 11.51 -86.20 83 5.40 MwHRV .F.G ....... 4657
PDE 2000 09 17 225003.85 52.56 -178.28 205 5.30 MwHRV ...G ....... 4515
PDE 2000 09 19 201957.64 57.17 -154.30 28 5.20 mb GS 4F.G ....... 3124
PDE 2000 09 25 115503.95 57.84 -153.94 52 5.10 MwHRV .F.G ....... 3141
PDE 2000 09 30 190508.34 57.50 -142.84 33 5.30 MwHRV ...G ....... 2595