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 Adjuntas, PR |
| Date: |
July 28, 2026 17:59:12 UTC July 28, 2026 13:59:12 Hora Local |
| Region: | South Region of Puerto Rico |
| Distances: |
8.68 Km East-Southeast of Guánica,PR 12.27 Km South-Southeast of Guayanilla,PR 27.68 Km West-Southeast of Ponce,PR |
| Magnitude: | 3.47 Md |
| Location: | Latitude: 17.9568 Longitude: -66.841 |
| Depth: | 12 Km |
| Tsunami Warning Level: | No Warning, Advisory or Watch is in effect for Puerto Rico and the Virgin Islands |
| Issued Date & Time | 2026-07-28 14:29:16 |
| ID: | 20260728175913 |
Epicentral Map
| BULLETIN 2 Seismic Event/Tsunami |
|
|---|---|
| DATE: | July 28, 2026 |
| LOCAL TIME: | 13:59:12 |
| LATITUDE: | 17.9568 N |
| LONGITUDE: | 66.841 W |
| LOCATION: |
8.7 Km East-Southeast of Guánica,PR
27.7 Km West-Southeast of Ponce,PR |
| DEPTH: | 12 Km |
| MAGNITUDE: | 3.47 Md |
| ESTIMATED MAXIMUM INTENSITY: | II in Adjuntas, PR |
| TSUNAMI ALERT LEVEL: | No Warning, Advisory or Watch is in effect for Puerto Rico and the Virgin Islands |
| DATE & ISSUED TIME | 2026-07-28 14:29:29 |
|
The Puerto Rico Seismic Network (PRSN) received information that this
minor earthquake was reported as
felt in Adjuntas 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. |
|
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|
Technical Information
YEAR MO DA --ORIGIN-- --LAT N- --LON W-- DEPTH RMS ERH ERZ XMAG FMAG PMAG INT
2026-07-28 1759 12.96 17 57.41 66 50.46 12.01 0.17 0.36 0.46 3.47 3.47D
SOURCE
NSTA NPHS DMIN MODEL GAP ITR NFM NWR NWS NVR REMRKS-AVH N.XMG-XMMAD-T N.FMG-FMMAD-T L F X
47 47 4.5 PR1 171 18 24 32 15 47 Q PPT 0.00 0.00 17.00 0.06 D
XMAG2-N.XMG2-XMMAD-T-S FMAG2-N.FMG2-FMMAD-T-S PREF.MAG-N.PMAG-PRMAD-T
3.47 17.00 0.06 Z 3.47 17.00 0.06 D
REGION= Southern Puerto Rico
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
GBPR PR HHZ A 4.5 297 156 EP- 1 15.38 2.42 2.32 0.00 0.10 1.18 0.142
GBPR PR HH1 A 4.5 297 156 ES 1 17.43 4.47 4.13 0.00 0.34 1.18S 0.417
MLPR PR HHZ A 21.6 274 108 EP- 1 17.27 4.31 4.36 0.00 -0.05 1.18 0.127
MLPR PR HH1 A 21.6 274 108 ES 1 20.66 7.70 7.76 0.00 -0.06 1.18S 0.196
OBIP PR HHZ A 26.6 69 103 EP- 1 17.85 4.89 5.11 0.00 -0.22 1.18 0.067 0.44 96 3.58 Z
OBIP PR HH2 A 26.6 69 103 ES 1 22.01 9.05 9.10 0.00 -0.05 1.18S 0.148
CRPR PR HHZ A 29.0 281 102 EP+ 1 18.25 5.29 5.46 0.00 -0.17 1.18 0.119 0.55 97 3.51 Z
CRPR PR HH2 A 29.0 281 102 ES 1 22.43 9.47 9.72 0.00 -0.25 1.18S 0.183
CELP PR HHZ A 30.7 64 101 EP- 1 18.47 5.51 5.71 0.00 -0.20 1.18 0.060 0.55 93 3.48 Z
CELP PR HH1 A 30.7 64 101 ES 1 23.23 10.27 10.16 0.00 0.11 1.18S 0.137
ICMP PR HHZ A 34.2 103 99 EP+ 1 19.11 6.15 6.25 0.00 -0.10 1.18 0.160
ICMP PR HH1 A 34.2 103 99 ES 1 24.16 11.20 11.12 0.00 0.07 1.18S 0.275
UUPR PR HHZ A 35.2 21 99 EP- 1 19.35 6.39 6.40 0.00 -0.01 1.18 0.056 0.55 90 3.47 Z
UUPR PR HH1 A 35.2 21 99 ES 1 24.12 11.16 11.39 0.00 -0.23 1.18S 0.232
LSP PR HHZ A 35.5 314 99 EP+ 1 19.47 6.51 6.45 0.00 0.06 1.18 0.077 0.58 80 3.35 Z
LSP PR HH1 A 35.5 314 99 ES 1 25.21 12.25 11.48 0.00 0.77* 0.00S 0.000
CVPR PR HNZ A 40.6 63 97 EP+ 1 20.16 7.20 7.23 0.00 -0.03 1.18 0.058
CVPR PR HN1 A 40.6 63 97 ES 1 25.81 12.85 12.87 0.00 -0.02 1.18S 0.125
PRSN PR HHZ A 43.2 312 97 EP+ 1 20.65 7.69 7.62 0.00 0.07 1.18 0.081 0.55 72 3.30 Z
PRSN PR HH2 A 43.2 312 97 ES 1 26.42 13.46 13.56 0.00 -0.10 1.18S 0.185
AOPR PR HHZ A 44.1 12 96 EP+ 1 20.82 7.86 7.76 0.00 0.10 1.18 0.061 0.55 86 3.47 Z
AOPR PR HH2 A 44.1 12 96 ES 1 26.58 13.62 13.81 0.00 -0.19 1.18S 0.245
AGPR PR HHZ A 63.3 334 66 EP+ 1 23.81 10.85 10.48 0.00 0.37 1.05 0.119 0.55 80 3.42 Z
AGPR PR HH1 A 63.3 334 66 ES 1 32.33 19.37 18.65 0.00 0.72* 0.00S 0.000
ECPR PR HHZ A 64.5 51 66 EP- 1 23.55 10.59 10.65 0.00 -0.06 1.03 0.082 0.55 86 3.49 Z
ECPR PR HH1 A 64.5 51 66 ES 1 32.02 19.06 18.96 0.00 0.10 1.03S 0.155
ASPR PR HHZ A 64.7 82 66 EP- 1 23.61 10.65 10.67 0.00 -0.02 1.03 0.123
ASPR PR HH1 A 64.7 82 66 ES 2 31.52 18.56 18.99 0.00 -0.43 0.25S 0.011
EMPR PR HHZ A 66.4 29 66 EP- 1 24.62 11.66 10.90 0.00 0.76* 0.00 0.000 0.55 79 3.41 Z
EMPR PR HH1 A 66.4 29 66 ES 1 32.60 19.64 19.40 0.00 0.24 0.99S 0.174
IGPR PR HHZ A 77.8 89 55 EP+ 1 25.70 12.74 12.46 0.00 0.28 0.62 0.065 0.55 80 3.44 Z
IGPR PR HH1 A 77.8 89 55 ES 1 35.56 22.60 22.18 0.00 0.42 0.47S 0.068
PDPR PR HHZ A 87.0 85 55 EP+ 1 26.87 13.91 13.63 0.00 0.28 0.31 0.015 0.55 87 3.52 Z
PDPR PR HH2 A 87.0 85 55 ES 1 38.24 25.28 24.26 0.00 1.02* 0.00S 0.000
GCPR PR HHZ A 89.1 63 55 EP- 1 27.16 14.20 13.90 0.00 0.30 0.25 0.007 0.55 64 3.25 Z
GCPR PR HH1 A 89.1 63 55 ES 1 37.60 24.64 24.74 0.00 -0.10 0.25S 0.013
FAPR PR HHZ A128.6 76 55 EP+ 1 33.14 20.18 18.90 0.00 1.28* 0.00 0.000 0.55 60 3.23 Z
FAPR PR HH1 A128.6 76 55 ES 1 48.44 35.48 33.64 0.00 1.84* 0.00S 0.000
CUPR PR HHZ A169.4 76 55 EP+ 1 39.56 26.60 24.06 0.00 2.54* 0.00 0.000 0.55 93 3.68 Z
CUPR PR HH1 A169.4 76 55 ES 1 59.52 46.56 42.83 0.00 3.73* 0.00S 0.000
STVI PR HHZ A204.2 77 55 EP- 1 44.88 31.92 28.46 0.00 3.46* 0.00 0.000 0.55 78 3.55 Z
STVI PR HH1 A204.2 77 55 ES 1 68.34 55.38 50.66 0.00 4.72* 0.00S 0.000
TBVI PR HHZ A240.5 77 55 EP+ 3 50.27 37.31 33.06 0.00 4.25* 0.00 0.000
VGBI PR HHZ A264.7 76 55 EP+ 1 52.02 39.06 36.12 0.00 2.94* 0.00 0.000 0.00 96 2.95 Z
VGBI PR HH1 A264.7 76 55 ES 2 80.94 67.98 64.29 0.00 3.69* 0.00S 0.000
HMDR DR BHZ A283.8 290 55 EP+ 1 56.75 43.79 38.54 0.00 5.25* 0.00 0.000
HMDR DR BHE A283.8 290 55 ES 1 87.76 74.80 68.60 0.00 6.20* 0.00S 0.000
Event Maps
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 Intensity Map |
 Peak Ground Velocity |
 Peak Ground Acceleration |
 DYFI Map |
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