Earthquake with magnitude of ML 0.9 on date 25-04-2017 and time 23:25:11 (UTC) in region 2 km NE Albano Laziale (RM)

A magnitude ML 0.9 earthquake occured in region: 2 km NE Albano Laziale (RM), on

  • 25-04-2017 23:25:11 (UTC)
  • 26-04-2017 01:25:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7430, 12.6840 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Albano Laziale RM 3 41715 41715
Ariccia RM 3 19407 61122
Castel Gandolfo RM 3 8997 70119
Rocca di Papa RM 3 17034 87153
Nemi RM 4 1943 89096
Marino RM 4 43026 132122
Genzano di Roma RM 4 23970 156092
Grottaferrata RM 5 20327 176419
Lanuvio RM 7 13632 190051
Frascati RM 7 22087 212138
Monte Porzio Catone RM 9 8693 220831
Monte Compatri RM 9 11978 232809
Rocca Priora RM 9 11962 244771
Ciampino RM 10 38412 283183
Velletri RM 10 53303 336486
Colonna RM 12 4287 340773
Lariano RM 13 13432 354205
San Cesareo RM 13 15153 369358
Zagarolo RM 16 17843 387201
Aprilia LT 17 73446 460647
Pomezia RM 17 62966 523613
Labico RM 18 6379 529992
Gallicano nel Lazio RM 18 6334 536326
Ardea RM 19 49183 585509
Artena RM 19 14276 599785
Valmontone RM 20 15959 615744

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km NW of Velletri (53303 inhabitants)
17 Km N of Aprilia (73446 inhabitants)
17 Km E of Pomezia (62966 inhabitants)
24 Km SE of Roma (2864731 inhabitants)
26 Km SW of Tivoli (56533 inhabitants)
29 Km S of Guidonia Montecelio (88673 inhabitants)
33 Km N of Anzio (54211 inhabitants)
36 Km NW of Latina (125985 inhabitants)
37 Km E of Fiumicino (78395 inhabitants)
83 Km E of Civitavecchia (52991 inhabitants)
89 Km SE of Viterbo (67173 inhabitants)
90 Km SW of L'Aquila (69753 inhabitants)
91 Km S of Terni (111501 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 1.2
ML 0.9
2017-04-25
23:25:11
41.743 12.6838 7 2018-01-10
09:56:12
Bollettino Sismico Italiano INGV 44586941
Reviewed
Rev100
ML 1.4 2017-04-25
23:25:10
41.7383 12.6818 8 2017-04-25
23:40:22
Sala Sismica INGV-Roma 44400791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-25 23:25:11 ± 0.2
Latitude 41.7430 ± 0.0054
Longitude 12.6838 ± 0.0072
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 44586941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 587
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 32
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.30307
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 44586941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-04-29 11:30:28

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 44400791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-25 23:40:22

Md:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 2
Type of magnitude Md
Reference to an origin 44586941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-04-29 11:30:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHE. 2017-04-25T23:25:22.66 0.6 undecidable manual S 47 33.6441 101 -0.4 44
IV.CERT.HHE. 2017-04-25T23:25:17.68 0.3 undecidable manual P 47 33.6441 101 -0.35 67
IV.SAMA.HHE. 2017-04-25T23:25:15.05 0.3 undecidable manual S 299 8.6802 128 0.09 73
IV.VIVA.HHZ. 2017-04-25T23:25:14.93 0.3 undecidable manual S 84 7.1928 133 0.35 70
IV.RMP.HHZ. 2017-04-25T23:25:14.96 0.3 undecidable manual S 11 7.6812 131 0.25 71
IV.LAV9.HHZ. 2017-04-25T23:25:14.54 0.3 undecidable manual S 170 7.3815 132 -0.08 74
IV.LAV9.HHZ. 2017-04-25T23:25:13.19 0.1 undecidable manual P 170 7.3815 132 0.03 99
IV.RDP.HHZ. 2017-04-25T23:25:13.49 0.3 undecidable manual S 49 2.8971 157 -0.21 72
IV.SAMA.HHE. 2017-04-25T23:25:13.35 0.1 undecidable manual P 299 8.6802 128 0 100
IV.MA9.HHZ. 2017-04-25T23:25:13.45 0.3 undecidable manual S 325 3.5964 152 -0.36 70
IV.VIVA.HHZ. 2017-04-25T23:25:13.21 0.1 undecidable manual P 84 7.1928 133 0.08 98
IV.RMP.HHZ. 2017-04-25T23:25:13.70 0.3 undecidable manual P 11 7.6812 131 0.49 68
IV.RDP.HHZ. 2017-04-25T23:25:12.56 0.1 undecidable manual P 49 2.8971 157 -0.07 99
IV.MA9.HHZ. 2017-04-25T23:25:12.72 0.1 undecidable manual P 325 3.5964 152 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MA9.HHE. ML:0.0 0.00019105069999999998 0.3584 AML other m 2017-04-25T23:25:13.77
IV.RMP.HHE. ML:0.9 0.0001485 0.54 AML other m 2017-04-25T23:25:16.14
IV.RMP.HHN. ML:1.0 0.00017449999999999999 0.6 AML other m 2017-04-25T23:25:15.66
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download