Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 18-05-2020 and time 05:22:59 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 6 km E Norcia (PG), on

  • 18-05-2020 03:22:59 (UTC)
  • 18-05-2020 05:22:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7760, 13.1640 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Norcia PG 6 4957 4957
Arquata del Tronto AP 11 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 14 3217 10300
Preci PG 15 724 11024
Montegallo AP 16 523 11547
Cittareale RI 18 482 12029
Visso MC 18 1107 13136
Ussita MC 19 444 13580
Amatrice RI 19 2657 16237
Montemonaco AP 19 604 16841
Poggiodomo PG 20 117 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
49 Km E of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
98 Km SW of Ancona (100861 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 		ML 1.7 2020-05-18
03:22:59		 42.7755 13.1642 10 2020-11-19
12:36:52		 Bollettino Sismico Italiano INGV 80860871
Reviewed
Rev100 		ML 1.7 2020-05-18
03:22:59		 42.772 13.1642 10 2020-05-18
03:29:49		 Sala Sismica INGV-Roma 79259561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 03:22:59 ± 0.05
Latitude 42.7755 ± 0.0027
Longitude 13.1642 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80860871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 316
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.74014
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 79259561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 03:29:49

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 80860871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-07 13:46:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESX.HHZ. 2020-05-18T03:23:16.07 0.3 undecidable manual S 249 50.616 50 0.43 66
IV.MOMA.HHZ. 2020-05-18T03:23:15.55 0.3 undecidable manual S 274 48.5181 50 0.48 65
IV.ARVD.HHZ. 2020-05-18T03:23:13.61 0.3 undecidable manual P 347 82.1511 50 -0.01 68
IV.ARRO.EHZ. 2020-05-18T03:23:12.65 0.1 undecidable manual S 236 39.1275 50 0.08 96
IV.ATCC.EHZ. 2020-05-18T03:23:11.34 0.3 undecidable manual P 317 62.2932 50 0.79 57
IV.GUMA.HHZ. 2020-05-18T03:23:11.87 0.1 undecidable manual S 23 34.743 50 0.46 90
IV.MF5.EHZ. 2020-05-18T03:23:11.67 0.3 undecidable manual S 45 33.6441 50 0.56 65
IV.CAMP.HHZ. 2020-05-18T03:23:10.69 0.6 undecidable manual S 143 33.2445 50 -0.32 46
IV.RM33.EHZ. 2020-05-18T03:23:10.02 0.1 undecidable manual S 172 29.8479 50 -0.08 98
IV.CESI.HHZ. 2020-05-18T03:23:10.59 0.1 undecidable manual S 320 33.0447 50 -0.37 92
IV.FIAM.HHZ. 2020-05-18T03:23:09.40 0.3 undecidable manual P 184 56.3991 50 -0.25 68
IV.FDMO.HHZ. 2020-05-18T03:23:09.52 0.3 undecidable manual S 348 29.6481 50 -0.52 67
IV.SNTG.HHZ. 2020-05-18T03:23:09.39 0.3 undecidable manual P 341 56.1993 50 -0.23 68
IV.MNTT.EHZ. 2020-05-18T03:23:09.01 0.3 undecidable manual P 48 47.3193 50 0.76 59
IV.CESX.HHZ. 2020-05-18T03:23:08.61 0.1 undecidable manual P 249 50.616 50 -0.15 93
IV.MOMA.HHZ. 2020-05-18T03:23:08.74 0.3 undecidable manual P 274 48.5181 50 0.31 68
IV.SMA1.EHZ. 2020-05-18T03:23:07.63 0.3 undecidable manual S 139 21.2676 114 0.16 73
IV.TERO.HHZ. 2020-05-18T03:23:07.02 0.1 undecidable manual P 115 39.627 50 -0.05 97
IV.SAP2.EHE. 2020-05-18T03:23:07.49 0.1 undecidable manual P 28 40.4262 50 0.3 92
IV.MML1.HNE. 2020-05-18T03:23:07.05 0.3 undecidable manual P 337 40.626 50 -0.17 71
IV.LNSS.HHZ. 2020-05-18T03:23:07.66 0.1 undecidable manual S 208 21.6672 114 0.08 99
IV.MMO1.EHZ. 2020-05-18T03:23:06.60 0.1 undecidable manual S 44 19.0698 117 -0.18 98
IV.MF5.EHZ. 2020-05-18T03:23:06.20 0.1 undecidable manual P 45 33.6441 50 0.06 98
IV.PF6.EHN. 2020-05-18T03:23:06.86 0.3 undecidable manual P 3 40.2264 50 -0.31 69
IV.MTRA.EHZ. 2020-05-18T03:23:06.51 0.1 undecidable manual S 96 19.0698 117 -0.26 96
IV.GUMA.HHZ. 2020-05-18T03:23:06.41 0.1 undecidable manual P 23 34.743 50 0.09 97
IV.CSP1.EHZ. 2020-05-18T03:23:06.15 0.1 positive manual P 5 35.2425 50 -0.24 94
IV.ARRO.EHZ. 2020-05-18T03:23:06.85 0.1 undecidable manual P 236 39.1275 50 -0.14 95
IV.MC2.EHZ. 2020-05-18T03:23:05.93 0.3 undecidable manual S 8 15.1737 122 0.32 72
IV.CESI.HHZ. 2020-05-18T03:23:05.84 0.3 undecidable manual P 320 33.0447 50 -0.22 71
IV.CAMP.HHZ. 2020-05-18T03:23:05.78 0.1 undecidable manual P 143 33.2445 50 -0.3 93
IV.FDMO.HHZ. 2020-05-18T03:23:05.20 0.1 undecidable manual P 348 29.6481 50 -0.32 93
IV.RM33.EHZ. 2020-05-18T03:23:05.40 0.1 undecidable manual P 172 29.8479 50 -0.16 96
IV.LNSS.HHZ. 2020-05-18T03:23:04.22 0.1 positive manual P 208 21.6672 114 0.11 99
IV.SMA1.EHZ. 2020-05-18T03:23:04.24 0.1 undecidable manual P 139 21.2676 114 0.2 97
IT.MTCL.HGZ. 2020-05-18T03:23:04.90 0.1 undecidable manual P 331 27.6501 50 -0.33 93
IV.FEMA.HNE. 2020-05-18T03:23:04.21 0.3 undecidable manual P 336 22.6551 113 -0.09 74
IV.MC2.EHZ. 2020-05-18T03:23:03.14 0.1 positive manual P 8 15.1737 122 0.17 99
IV.MMO1.EHZ. 2020-05-18T03:23:03.54 0.1 positive manual P 44 19.0698 117 -0.1 99
IV.NRCA.HNZ. 2020-05-18T03:23:03.41 0.1 undecidable manual S 328 7.5813 142 -0.22 99
IV.MTRA.EHZ. 2020-05-18T03:23:03.71 0.1 undecidable manual P 96 19.0698 117 0.08 100
IV.NRCA.HNZ. 2020-05-18T03:23:01.99 0.1 negative manual P 328 7.5813 142 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.5 0.005465 0.12 AML other m 2020-05-18T03:23:03.50
IV.NRCA.HNN. ML:2.5 0.0047 0.12 AML other m 2020-05-18T03:23:03.51
IV.NRCA.HHE. ML:2.6 0.0058249999999999994 0.16 AML other m 2020-05-18T03:23:03.55
IV.NRCA.HNE. ML:2.6 0.0056300000000000005 0.14 AML other m 2020-05-18T03:23:03.56
IV.MTRA.EHE. ML:1.8 0.0004735 1.66 AML other m 2020-05-18T03:23:06.98
IV.MTRA.HNE. ML:1.8 0.000455 1.66 AML other m 2020-05-18T03:23:06.15
IV.MTRA.HNN. ML:1.7 0.000425 0.22 AML other m 2020-05-18T03:23:07.14
IV.MTRA.EHN. ML:1.7 0.000419 0.24 AML other m 2020-05-18T03:23:07.26
IV.LNSS.HHE. ML:2.0 0.0006684999999999999 0.7 AML other m 2020-05-18T03:23:08.03
IV.LNSS.HHN. ML:1.9 0.0006465 0.24 AML other m 2020-05-18T03:23:08.42
IV.FDMO.HHN. ML:1.4 0.0001325 1.2 AML other m 2020-05-18T03:23:09.89
IV.SMA1.EHE. ML:1.6 0.000272 0.56 AML other m 2020-05-18T03:23:10.18
IV.RM33.EHN. ML:1.3 0.0001031 0.36 AML other m 2020-05-18T03:23:10.79
IV.CAMP.HHE. ML:1.2 0.00007635 0.84 AML other m 2020-05-18T03:23:10.48
IV.CESI.HHE. ML:1.6 0.0001785 0.46 AML other m 2020-05-18T03:23:11.14
IV.CESI.HHN. ML:1.6 0.0001835 0.3 AML other m 2020-05-18T03:23:11.15
IV.SMA1.EHN. ML:1.6 0.00030000000000000003 0.42 AML other m 2020-05-18T03:23:11.42
IV.FDMO.HHE. ML:1.3 0.00010700000000000001 1.02 AML other m 2020-05-18T03:23:11.60
IV.RM33.EHE. ML:1.5 0.0001525 0.14 AML other m 2020-05-18T03:23:11.72
IV.CAMP.HHN. ML:1.0 0.000047350000000000006 1.34 AML other m 2020-05-18T03:23:11.80
IV.GUMA.HHE. ML:1.8 0.000253 1.78 AML other m 2020-05-18T03:23:13.00
IV.GUMA.HHN. ML:1.8 0.0002615 0.24 AML other m 2020-05-18T03:23:13.13
IV.ARRO.EHE. ML:1.3 0.0000632 0.46 AML other m 2020-05-18T03:23:14.84
IV.ARRO.EHN. ML:1.3 0.00006975 1.38 AML other m 2020-05-18T03:23:14.03
IV.MOMA.HHE. ML:1.5 0.00009575 0.2 AML other m 2020-05-18T03:23:16.74
IV.MOMA.HHN. ML:1.5 0.0000861 0.2 AML other m 2020-05-18T03:23:17.34
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