Event Number 2142

M2.4 m SE of Portola Valley, CA - 2021/08/08 16:07:21 37.354 -122.199 M2.4 9.2 5km SE of Portola Valley, CA at 2021/08/08 16:07:21 UTC / 2021/08/08 09:07:21 PDT

Error Map and Stations Used to Locate Event

Errors from USGS Location and Magnitude:

EQPROC = 26.9km (16.7mi)
HYPO2K = 18.2km (11.3mi) Magnitude = -0.4

USGS Report:

Date       Time       Lat    Lon      Mag    Depth                Location   
-----------------------------------------------------------------------------------
2021/08/08 16:07:21  37.354 -122.199  M2.4   9.2 5km SE of Portola Valley, CA

EQPROC Summary:

2142 2021Aug 8 1607 20.02  37.5235 -121.9810 10.81 0.09 17.4 50.8 184  6
GLFBZ SHZ PN 01 2021Aug 8 1607 23.90 P D0  17.4  -0.00
ADUB1 SHZ PN 01 2021Aug 8 1607 26.05 P D0  30.7   0.02
MTUMZ SHZ PN 01 2021Aug 8 1607 27.76 P ?2  41.8  -0.10
B058  EHZ PB -- 2021Aug 8 1607 34.96 P D2  87.9   0.05
B054  EHZ PB -- 2021Aug 8 1607 31.36 S ?1  42.1  -2.24
B057  EHZ PB -- 2021Aug 8 1607 35.12 P U3  76.1   1.93

HYPO2K Report:

 YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH-M RMS   ERH   ERZ  XMAG1 FMAG1 PMAG GEOID-DEP
 2021-08-08  1607 21.25  37 27.583 122W 2.211 10.74  0.19 12.42 13.04        2.80  2.80E   10.72
                                                                                          SOURCE
 NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X
    5    5  10.2  Emb  186   9   4   5   0   5      -                          4  2.80 E  W W  

 XMAG2-N.XMG2-XMMAD-T-S  FMAG2-N.FMG2-FMMAD-T-S  PREF.MAG-N.PMAG-PRMAD-T DEPDAT NS ZT TYP
                                                     2.80      4  2.80 E     25  5  M CRH
 REGION=                          

 STA NET COM L CR DIST AZM  AN P/S WT   SEC (TOBS -TCAL -DLY  =RES)  WT   SR  INFO  CAL  DUR-W-FMAG-T -AMP-U-PER-W-XMAG-T DE
 GLFBZPN SHZ 01 A 10.2 261 133  PD    23.90  2.65  2.72 0.00 -0.07  1.54  W  0.960 0.00 47.0   2.77 E                        
 ADUB1PN SHZ 01 A 24.1 167 111  PD    26.05  4.80  4.66 0.00  0.14  1.54  W  0.835 0.00 45.0   2.82 E                        
 MTUMZPN SHZ 01 A 36.2 160 104  P  2  27.76  6.51  6.53 0.00 -0.02  0.77  W  0.975 0.00 21.0   2.16 E                        
 B057 PB EHZ -- A 78.4 324  96  PU 3  35.12 13.87 13.29 0.00  0.58* 0.38  W  0.830 0.00 21.0   2.22 E                        
 B058 PB EHZ -- A 83.7 150  96  PD 2  34.96 13.71 14.16 0.00 -0.45  0.77  W  0.397 0.00 1.00 4                               

Event Files: August 2021