Earthquake with magnitude of ML 1.6 on date 22-03-2020 and time 20:30:24 (Italy) in region 5 km E Rocca Priora (RM)

A magnitude ML 1.6 earthquake occured in region: 5 km E Rocca Priora (RM), on

  • 22-03-2020 19:30:24 (UTC)
  • 22-03-2020 20:30:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.78, 12.82 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Rocca Priora RM 5 11962 11962
San Cesareo RM 5 15153 27115
Lariano RM 6 13432 40547
Labico RM 6 6379 46926
Zagarolo RM 7 17843 64769
Monte Compatri RM 7 11978 76747
Colonna RM 8 4287 81034
Valmontone RM 9 15959 96993
Monte Porzio Catone RM 9 8693 105686
Rocca di Papa RM 9 17034 122720
Palestrina RM 9 21672 144392
Artena RM 10 14276 158668
Castel San Pietro Romano RM 10 902 159570
Gallicano nel Lazio RM 10 6334 165904
Nemi RM 11 1943 167847
Cave RM 11 11287 179134
Velletri RM 11 53303 232437
Frascati RM 12 22087 254524
Grottaferrata RM 12 20327 274851
Marino RM 13 43026 317877
Genzano di Roma RM 13 23970 341847
Rocca di Cave RM 13 377 342224
Ariccia RM 14 19407 361631
Poli RM 14 2418 364049
Albano Laziale RM 14 41715 405764
Castel Gandolfo RM 14 8997 414761
Rocca Massima LT 14 1136 415897
Genazzano RM 14 6036 421933
Lanuvio RM 14 13632 435565
Capranica Prenestina RM 15 351 435916
Casape RM 15 744 436660
San Gregorio da Sassola RM 16 1619 438279
Colleferro RM 17 21595 459874
Cori LT 17 11065 470939
Ciampino RM 18 38412 509351
San Vito Romano RM 18 3273 512624
Pisoniano RM 19 770 513394
Segni RM 20 9159 522553

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km N of Velletri (53303 inhabitants)
21 Km S of Tivoli (56533 inhabitants)
25 Km NE of Aprilia (73446 inhabitants)
26 Km S of Guidonia Montecelio (88673 inhabitants)
29 Km E of Pomezia (62966 inhabitants)
30 Km E of Roma (2864731 inhabitants)
35 Km N of Latina (125985 inhabitants)
40 Km NE of Anzio (54211 inhabitants)
48 Km E of Fiumicino (78395 inhabitants)
80 Km SW of L'Aquila (69753 inhabitants)
88 Km S of Terni (111501 inhabitants)
91 Km E of Civitavecchia (52991 inhabitants)
92 Km SE of Viterbo (67173 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2020-03-22
19:30:24
41.78 12.82 11 2020-03-22
19:38:02
Sala Sismica INGV-Roma 77475061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-22 19:30:24 ± 0.11
Latitude 41.78 ± 0.01
Longitude 12.82 ± 0.01
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77475061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1550
Semi-minor axis of confidence ellipse (meter) 800
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 1550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3957
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 77475061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-22 19:38:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.KBN.HHZ. 2020-03-22T19:31:56.12 3.0 positive manual Pg 14.87 0
IV.CAGR.HHZ. 2020-03-22T19:31:38.64 3.0 undecidable manual Pg 16.68 0
OX.FUSE.HHZ. 2020-03-22T19:31:33.81 3.0 undecidable manual Pg 7.44 0
IV.CSNT.HHZ. 2020-03-22T19:31:26.91 3.0 undecidable manual Sg 3.46 0
IV.PCN.EHZ. 2020-03-22T19:31:24.19 3.0 undecidable manual Pn 3.35 0
IV.MAON.HHZ. 2020-03-22T19:31:17.18 3.0 undecidable manual Sg 5.14 0
IV.MURB.HHZ. 2020-03-22T19:30:59.79 3.0 undecidable manual S -6.65 0
IV.VITU.HNZ. 2020-03-22T19:30:53.34 3.0 undecidable manual S -1.29 0
IV.APEC.HHZ. 2020-03-22T19:30:43.19 3.0 negative manual Pn -5.97 0
IV.GIUL.HHZ. 2020-03-22T19:30:39.06 0.3 undecidable manual S 124 0.3957 90 0.27 66
IV.LATB.EHE. 2020-03-22T19:30:35.18 0.3 undecidable manual S 159 0.3067 90 -0.96 57
IV.CERT.HHZ. 2020-03-22T19:30:33.22 0.6 undecidable manual S 36 0.2095 90 -0.04 48
IV.GIUL.HHZ. 2020-03-22T19:30:32.67 0.1 undecidable manual P 124 0.3957 90 -0.12 94
IV.LATB.EHE. 2020-03-22T19:30:31.03 0.1 undecidable manual P 159 0.3067 90 -0.23 94
IV.SAMA.EHZ. 2020-03-22T19:30:31.88 0.3 undecidable manual S 270 0.1664 90 -0.09 73
IV.RCAV.EHN. 2020-03-22T19:30:30.48 0.6 undecidable manual S 55 0.1178 98 -0.07 49
IV.RMP.HHZ. 2020-03-22T19:30:29.72 0.6 undecidable manual S 291 0.0881 121 -0.01 50
IV.CERT.HHZ. 2020-03-22T19:30:29.46 0.1 undecidable manual P 36 0.2095 90 -0.14 95
IV.RDP.HHZ. 2020-03-22T19:30:29.37 0.3 undecidable manual S 256 0.0809 125 -0.18 73
IV.SAMA.EHZ. 2020-03-22T19:30:29.02 1.0 negative manual P 270 0.1664 90 0.16 24
IV.LAV9.HHZ. 2020-03-22T19:30:28.63 0.1 undecidable manual P 220 0.134 90 0.32 93
IV.RDP.HHZ. 2020-03-22T19:30:28.08 0.3 undecidable manual P 256 0.0809 125 0.62 65
IV.VIVA.HHZ. 2020-03-22T19:30:28.19 0.6 undecidable manual S 228 0.045 148 -0.63 44
IV.RCAV.EHN. 2020-03-22T19:30:28.40 0.1 undecidable manual P 55 0.1178 98 0.36 93
IV.RMP.HHZ. 2020-03-22T19:30:27.93 0.6 undecidable manual P 291 0.0881 121 0.37 47
IV.VIVA.HHZ. 2020-03-22T19:30:26.93 0.1 negative manual P 228 0.045 148 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHN. ML:2 0.001385 0.2 AML other m 2020-03-22T19:30:28.27
IV.VIVA.HHE. ML:2 0.001415 0.2 AML other m 2020-03-22T19:30:28.52
IV.RDP.HHE. ML:1.5 0.0003595 1.56 AML other m 2020-03-22T19:30:29.05
IV.RDP.HHN. ML:1.7 0.000684 0.46 AML other m 2020-03-22T19:30:29.91
IV.RMP.HHE. ML:1.6 0.000467 0.44 AML other m 2020-03-22T19:30:30.49
IV.RMP.HHN. ML:1.6 0.000504 0.42 AML other m 2020-03-22T19:30:32.68
IV.LAV9.HHN. ML:1.5 0.000298 0.46 AML other m 2020-03-22T19:30:34.30
IV.CERT.HHN. ML:0.9 4.43E-5 0.54 AML other m 2020-03-22T19:30:34.17
IV.LAV9.HHE. ML:1.7 0.0004585 0.28 AML other m 2020-03-22T19:30:36.49
IV.CERT.HHE. ML:1 5.785E-5 1.18 AML other m 2020-03-22T19:30:37.36
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download