No Warning, Advisory or Watch is in effect for Puerto Rico and the Virgin Islands.


Earthquake Information


This information is Issued for Puerto Rico and the Virgin Islands.For more information visit your corresponding Seismological Institution or theTsunami Warning Centers
Event Details
Estimated Maximum Intensity: II in Toa Alta, PR
Date: April 23, 2023 03:48:55 UTC
April 22, 2023 23:48:55 Hora Local
Region: Sombrero Seismic Zone
Distances: 57.13 Km North-Northwest of Anegada,BVI
80.99 Km North-Northwest of Virgin Gorda,BVI
185.33 Km East-Northeast of San Juan,PR
Magnitude: 3.55 Md
Location: Latitude: 19.1965 Longitude: -64.5816
Depth: 34 Km
Tsunami Warning Level: No Warning, Advisory or Watch is in effect for Puerto Rico and the Virgin Islands
Issued Date & Time 2023-04-23 00:29:07
ID: 20230423034839

Epicentral Map

Epicentral Map (PRSN), Last Modified: 2023-04-23 00:29:13 Hora Local.
BULLETIN 1
Seismic Event/Tsunami
DATE: April 22, 2023
LOCAL TIME: 23:48:55
LATITUDE: 19.1965 N
LONGITUDE: 64.5816 W
LOCATION: 57.1 Km North-Northwest of Anegada,BVI
185.3 Km East-Northeast of San Juan,PR
DEPTH: 34 Km
MAGNITUDE: 3.55 Md
ESTIMATED MAXIMUM INTENSITY: II in Toa Alta, PR
TSUNAMI ALERT LEVEL: No Warning, Advisory or Watch is in effect for Puerto Rico and the Virgin Islands
DATE & ISSUED TIME 2023-04-23 00:29:13
The Puerto Rico Seismic Network (PRSN) received information that this minor earthquake was reported as felt in Toa Alta with a maximum intensity of II (Modified Mercalli Scale, MM). At the moment of generating this bulletin no damages has been reported and are not expected to occur

Based on magnitude, location and historic records the earthquake was not sufficient to generate a destructive tsunami to Puerto Rico and Virgin Islands.

Technical Information

YEAR MO DA  --ORIGIN--  --LAT N-  --LON W--  DEPTH   RMS   ERH   ERZ  XMAG  FMAG  PMAG  INT                            
2023-04-23  0348 55.24  19 11.79   64 34.90  34.04  0.28  4.00 19.39        3.55  3.55D II                               
                                                                                         SOURCE                        
NSTA NPHS  DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH  N.XMG-XMMAD-T   N.FMG-FMMAD-T  L F X                         
  18   18  97.8  PR1  309  15   8  16   8  16     Q- PPD   0.00  0.00      5.00  0.09 D                                
                                                                                                                       
XMAG2-N.XMG2-XMMAD-T-S  FMAG2-N.FMG2-FMMAD-T-S  PREF.MAG-N.PMAG-PRMAD-T                                                
                         3.55   5.00  0.09 Z        3.55   5.00  0.09 D                                                

REGION= Sombrero Seismic Zone                                                                                          
                                                                                                                       
STA NET COM 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  
SJVI PR HHZ  A 97.8 192 101 EP+ 1  69.84 14.60 14.63 0.00 -0.03  1.00     0.239 0.55  78   3.46 Z                      
SJVI PR HH2  A 97.8 192 101 ES  1  81.31 26.07 26.04 0.00  0.03  1.00S    0.398                                        
STVI PR HHZ  A101.5 203 100 EP+ 1  69.96 14.72 15.08 0.00 -0.36  1.00     0.180 0.55  78   3.46 Z                      
STVI PR HH1  A101.5 203 100 ES  1  81.69 26.45 26.84 0.00 -0.39  1.00S    0.344                                        
CUPR PR HHZ  A123.1 218  98 EP+ 1  72.94 17.70 17.78 0.00 -0.08  1.00     0.115 0.55  84   3.55 Z                      
CUPR PR HH1  A123.1 218  98 ES  1  87.44 32.20 31.65 0.00  0.55* 1.00S    0.187                                        
MTP  PR HHZ  A159.1 221  96 EP+ 1  77.69 22.45 22.30 0.00  0.15  1.00     0.235 0.55  87   3.62 Z                      
MTP  PR HH2  A159.1 221  96 ES  1  94.90 39.66 39.69 0.00 -0.03  1.00S    0.497                                        
HUMP PR HHZ  A177.5 230  95 EP- 1  80.24 25.00 24.62 0.00  0.38  1.00     0.149 0.55  89   3.66 Z                      
HUMP PR HH1  A177.5 230  95 ES  1  99.28 44.04 43.82 0.00  0.22  1.00S    0.223                                        
GCPR PR HHZ  A186.4 239  95 EP+ 1  81.02 25.78 25.74 0.00  0.04  1.00     0.175                                        
GCPR PR HH2  A186.4 239  95 ES  1 101.08 45.84 45.82 0.00  0.02  1.00S    0.291                                        
ECPR PR HHZ  A211.5 243  94 EP+ 1  83.87 28.63 28.91 0.00 -0.28  1.00     0.205                                        
ECPR PR HH1  A211.5 243  94 ES  1 106.73 51.49 51.46 0.00  0.03  1.00S    0.348                                        
CELP PR HHZ  A244.7 240  93 EP+ 1  88.59 33.35 33.10 0.00  0.25  1.00     0.174                                        
CELP PR HH1  A244.7 240  93 ES  1 113.58 58.34 58.92 0.00 -0.58* 1.00S    0.232                                        
   2 UNWEIGHTED STATIONS NOT PRINTED.                                                                                  

Event Maps



Spectral Acceleration


Intensity Map


Peak Ground Velocity


Peak Ground Acceleration


DYFI Map

Google Map for this Event