Earthquake with magnitude of ML 1.3 on date 01-07-2020 and time 00:22:36 (Italy) in region 3 km SE Guidonia Montecelio (RM)

A magnitude ML 1.3 earthquake occured in region: 3 km SE Guidonia Montecelio (RM), on

  • 30-06-2020 22:22:36 (UTC)
  • 01-07-2020 00:22:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.99, 12.75 at 7 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
Guidonia Montecelio RM 3 88673 88673
Tivoli RM 5 56533 145206
Marcellina RM 6 7280 152486
Sant'Angelo Romano RM 6 5018 157504
San Polo dei Cavalieri RM 8 2992 160496
Palombara Sabina RM 9 13269 173765
Castel Madama RM 10 7399 181164
Mentana RM 11 22921 204085
Fonte Nuova RM 11 32562 236647
Vicovaro RM 12 4019 240666
San Gregorio da Sassola RM 13 1619 242285
Monterotondo RM 13 40830 283115
Gallicano nel Lazio RM 14 6334 289449
Casape RM 14 744 290193
Roccagiovine RM 14 263 290456
Moricone RM 15 2650 293106
Mandela RM 15 917 294023
Sambuci RM 15 925 294948
Monteflavio RM 16 1348 296296
Licenza RM 16 1011 297307
Poli RM 16 2418 299725
Ciciliano RM 16 1336 301061
Colonna RM 17 4287 305348
Montelibretti RM 17 5323 310671
Saracinesco RM 17 185 310856
Zagarolo RM 17 17843 328699
Montorio Romano RM 18 1984 330683
Percile RM 18 255 330938
San Cesareo RM 19 15153 346091
Monte Porzio Catone RM 19 8693 354784
Cineto Romano RM 19 601 355385
Pisoniano RM 19 770 356155
Castel San Pietro Romano RM 19 902 357057
Cerreto Laziale RM 20 1118 358175
Monte Compatri RM 20 11978 370153
Palestrina RM 20 21672 391825
Nerola RM 20 1926 393751
Anticoli Corrado RM 20 915 394666

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SE of Guidonia Montecelio (88673 inhabitants)
5 Km NW of Tivoli (56533 inhabitants)
24 Km E of Roma (2864731 inhabitants)
33 Km N of Velletri (53303 inhabitants)
41 Km NE of Pomezia (62966 inhabitants)
44 Km N of Aprilia (73446 inhabitants)
49 Km E of Fiumicino (78395 inhabitants)
59 Km N of Latina (125985 inhabitants)
61 Km N of Anzio (54211 inhabitants)
65 Km S of Terni (111501 inhabitants)
67 Km SW of L'Aquila (69753 inhabitants)
72 Km SE of Viterbo (67173 inhabitants)
80 Km E of Civitavecchia (52991 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
Reviewed
Rev100
ML 1.3 2020-06-30
22:22:36
41.99 12.75 7 2020-06-30
22:37:52
Sala Sismica INGV-Roma 80658901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-30 22:22:36 ± 0.06
Latitude 41.99 ± 0.00
Longitude 12.75 ± 0.00
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80658901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 307
Semi-minor axis of confidence ellipse (meter) 151
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3912
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 80658901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-30 22:37:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PZUN.HHZ. 2020-06-30T22:23:55.25 3.0 undecidable manual Sn 0.83 0
IV.PAOL.HHZ. 2020-06-30T22:23:32.23 3.0 undecidable manual Sn 0.72 0
IV.ROSPO.HHZ. 2020-06-30T22:23:20.65 3.0 undecidable manual Sg -0.22 0
IV.FIAM.HNE. 2020-06-30T22:22:51.78 0.6 undecidable manual S 44 0.3912 50 0.08 62
IV.FIAM.HNE. 2020-06-30T22:22:45.43 0.6 undecidable manual P 44 0.3912 50 0.03 63
IV.RMP.HHN. 2020-06-30T22:22:44.23 0.6 undecidable manual S 191 0.1772 110 0.17 64
IV.RCAV.EHE. 2020-06-30T22:22:44.94 0.6 undecidable manual S 134 0.1996 108 0.07 65
IV.CERT.HHZ. 2020-06-30T22:22:43.98 0.6 undecidable manual S 102 0.1745 110 0.02 66
IV.RCAV.EHE. 2020-06-30T22:22:41.35 0.3 undecidable manual P 134 0.1996 108 -0.1 97
IV.RMP.HHN. 2020-06-30T22:22:40.87 0.6 undecidable manual P 191 0.1772 110 -0.12 65
IV.ARVD.HHZ. 2020-06-30T22:22:40.63 3.0 undecidable manual P -0.84 0
IV.CERT.HHZ. 2020-06-30T22:22:40.90 0.3 undecidable manual P 102 0.1745 110 -0.03 99
IV.MTCE.HHZ. 2020-06-30T22:22:39.75 0.3 undecidable manual S 349 0.0378 150 0.09 100
IV.TERO.HHZ. 2020-06-30T22:22:39.71 3.0 undecidable manual P 0.01 0
IV.ATMI.HHZ. 2020-06-30T22:22:38.89 3.0 negative manual P 0.29 0
IV.MTCE.HHZ. 2020-06-30T22:22:38.34 0.3 undecidable manual P 349 0.0378 150 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHE. ML:1.6 0.00028913735 0.32 AML other m 2020-06-30T22:22:45.04
IV.MTCE.HHE. ML:0 0.00018904432 0.2432 AML other m 2020-06-30T22:22:40.38
IV.MTCE.HHN. ML:0 0.00037623875 0.2816 AML other m 2020-06-30T22:22:40.12
IV.ATMI.HHE. ML:1.5 1.67886395E-5 0.1664 AML other m 2020-06-30T22:22:41.33
IV.ATMI.HHN. ML:1.5 1.718083E-5 0.576 AML other m 2020-06-30T22:22:38.71
IV.TERO.HHE. ML:0.7 4.049479E-6 0.32 AML other m 2020-06-30T22:23:12.93
IV.TERO.HHN. ML:0.7 4.706097E-6 0.3328 AML other m 2020-06-30T22:23:14.68
IV.TERO.HNE. ML:2.1 0.000127198515 0.8448 AML other m 2020-06-30T22:22:42.35
IV.TERO.HNN. ML:2.2 0.00014429303 0.768 AML other m 2020-06-30T22:22:50.48
IV.ARVD.HHE. ML:1.7 1.835355E-5 0.0512 AML other m 2020-06-30T22:22:45.27
IV.ARVD.HHN. ML:1.1 7.2084975E-6 0.064 AML other m 2020-06-30T22:22:50.66
IV.RMP.HHN. ML:1.6 0.00033658415 0.32 AML other m 2020-06-30T22:22:48.79
IV.CERT.HHE. ML:1 8.5402405E-5 0.6016 AML other m 2020-06-30T22:22:48.22
IV.CERT.HHN. ML:0.8 4.7815255E-5 0.4608 AML other m 2020-06-30T22:22:44.49
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