Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 31-03-2020 and time 08:14:22 (UTC) in region 2 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 2 km E Norcia (PG), on

  • 31-03-2020 08:14:22 (UTC)
  • 31-03-2020 10:14:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8000, 13.1200 at 9 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.

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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 2 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Preci PG 11 724 5962
Cascia PG 12 3217 9179
Arquata del Tronto AP 15 1178 10357
Visso MC 15 1107 11464
Accumoli RI 16 667 12131
Ussita MC 16 444 12575
Cerreto di Spoleto PG 17 1075 13650
Poggiodomo PG 18 117 13767
Montegallo AP 18 523 14290
Sellano PG 19 1079 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km W of Pescara (121014 inhabitants)
99 Km NW of Chieti (51815 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 1.3 2020-03-31
08:14:22		 42.7997 13.1198 9 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78244251
Reviewed
Rev100 		ML 1.3 2020-03-31
08:14:22		 42.7908 13.1138 7 2020-03-31
08:26:03		 Sala Sismica INGV-Roma 77722901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 08:14:22 ± 0.04
Latitude 42.7997 ± 0.0018
Longitude 13.1198 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78244251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 324
Semi-minor axis of confidence ellipse (meter) 50
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
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) 52
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52970
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 78244251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-15 15:36:55

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 77722901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 08:26:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PCN.EHZ. 2020-03-31T08:15:57.73 3.0 undecidable manual Sn 0.58 0
IV.NDIM.HNZ. 2020-03-31T08:15:47.73 3.0 undecidable manual Sg 7.26 0
IV.APRC.HHZ. 2020-03-31T08:15:26.42 3.0 undecidable manual Sn 0.08 0
CR.STON.BHZ. 2020-03-31T08:15:26.38 3.0 positive manual Pg 10.24 0
IV.ROSPO.HHZ. 2020-03-31T08:15:10.92 3.0 undecidable manual S -0.2 0
IV.CIGN.HHZ. 2020-03-31T08:14:53.80 3.0 undecidable manual Pn 0.08 0
IV.EL6.EHZ. 2020-03-31T08:14:40.67 0.3 undecidable manual S 359 58.7967 50 0.05 69
IV.PE3.EHZ. 2020-03-31T08:14:39.56 3.0 undecidable manual P -3.82 0
IV.TERO.HHZ. 2020-03-31T08:14:36.45 0.3 undecidable manual S 116 44.0226 50 -0.24 68
IV.PF6.EHZ. 2020-03-31T08:14:35.20 0.6 undecidable manual S 9 38.0286 50 0.13 47
IV.CSP1.EHZ. 2020-03-31T08:14:33.91 0.3 undecidable manual S 12 33.1446 50 0.14 71
IV.EL6.EHZ. 2020-03-31T08:14:33.19 0.6 undecidable manual P 359 58.7967 50 0.43 43
IV.RM33.EHZ. 2020-03-31T08:14:33.29 0.6 undecidable manual S 166 33.1446 50 -0.49 44
IV.CESI.HHZ. 2020-03-31T08:14:32.48 0.3 undecidable manual S 323 28.749 107 0.02 73
IV.SMA1.EHZ. 2020-03-31T08:14:31.64 0.3 undecidable manual S 137 25.6521 109 0.17 72
IV.FDMO.HHZ. 2020-03-31T08:14:31.79 0.3 undecidable manual S 354 26.3514 109 0.09 73
IV.CESX.HHE. 2020-03-31T08:14:31.12 0.1 undecidable manual P 244 48.3183 50 -0.03 94
IV.MOMA.HHZ. 2020-03-31T08:14:30.76 0.3 undecidable manual P 271 44.7219 50 0.17 69
IV.MTRA.EHZ. 2020-03-31T08:14:30.59 0.3 undecidable manual S 102 23.0547 111 -0.01 74
IV.T1299.EHZ. 2020-03-31T08:14:30.80 0.3 undecidable manual S 144 22.6551 112 0.33 70
IV.LNSS.HHZ. 2020-03-31T08:14:30.79 0.3 undecidable manual S 197 22.755 112 0.27 71
IV.TERO.HHZ. 2020-03-31T08:14:30.45 0.3 undecidable manual P 116 44.0226 50 -0.04 71
IV.MMO1.EHZ. 2020-03-31T08:14:29.60 0.3 undecidable manual S 57 20.1687 114 -0.08 74
IV.MF5.EHZ. 2020-03-31T08:14:29.36 0.6 undecidable manual P 53 34.6431 50 0.32 46
IV.MML1.HNZ. 2020-03-31T08:14:29.56 0.3 undecidable manual P 341 36.8298 50 0.19 70
IV.PF6.EHZ. 2020-03-31T08:14:29.51 0.6 undecidable manual P 9 38.0286 50 -0.05 48
IV.CAMP.HHZ. 2020-03-31T08:14:29.35 0.3 undecidable manual P 141 37.629 50 -0.14 71
IV.RM33.EHZ. 2020-03-31T08:14:28.43 0.3 undecidable manual P 166 33.1446 50 -0.38 68
IV.CSP1.EHZ. 2020-03-31T08:14:28.69 0.3 undecidable manual P 12 33.1446 50 -0.12 71
IV.CESI.HHZ. 2020-03-31T08:14:28.01 0.3 undecidable manual P 323 28.749 107 -0.04 73
IV.LNSS.HHZ. 2020-03-31T08:14:27.12 0.3 undecidable manual P 197 22.755 112 0.19 72
IV.SMA1.EHZ. 2020-03-31T08:14:27.36 0.3 undecidable manual P 137 25.6521 109 -0.12 72
IT.MTCL.HGZ. 2020-03-31T08:14:27.02 0.1 undecidable manual P 336 23.6541 111 -0.07 98
IV.MC2.EHZ. 2020-03-31T08:14:27.92 0.3 undecidable manual S 24 13.5753 124 0.23 72
IV.T1299.EHZ. 2020-03-31T08:14:27.11 0.3 undecidable manual P 144 22.6551 112 0.21 71
IV.FDMO.HHZ. 2020-03-31T08:14:27.43 0.3 undecidable manual P 354 26.3514 109 -0.18 71
IV.MMO1.EHZ. 2020-03-31T08:14:26.38 0.3 undecidable manual P 57 20.1687 114 -0.06 74
IV.MTRA.EHZ. 2020-03-31T08:14:26.91 0.3 undecidable manual P 102 23.0547 111 -0.06 74
IV.MC2.EHZ. 2020-03-31T08:14:25.55 0.3 undecidable manual P 24 13.5753 124 0.26 72
IV.FEMA.HNE. 2020-03-31T08:14:25.79 0.6 undecidable manual P 342 18.87 116 -0.42 46
IV.NRCA.HNZ. 2020-03-31T08:14:24.92 0.3 undecidable manual S 353 3.7962 157 -0.49 69
IV.NRCA.HNZ. 2020-03-31T08:14:23.85 0.1 undecidable manual P 353 3.7962 157 -0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MF5.EHN. ML:1.4 0.00010244727000000001 0.3424 AML other m 2020-03-31T08:14:06.98
IV.NRCA.HHN. ML:2.2 0.0030170915 0.1152 AML other m 2020-03-31T08:14:25.24
IV.NRCA.HNN. ML:2.2 0.0029202775 0.1152 AML other m 2020-03-31T08:14:25.24
IV.NRCA.HHE. ML:2.3 0.0040253960000000005 0.1216 AML other m 2020-03-31T08:14:25.39
IV.NRCA.HNE. ML:2.3 0.0038694145 0.1216 AML other m 2020-03-31T08:14:25.39
IV.CESI.HNE. ML:1.4 0.00013389188499999998 1.1616 AML other m 2020-03-31T08:14:28.09
IV.CSP1.EHN. ML:0.8 0.000030431700000000002 0.7008 AML other m 2020-03-31T08:14:29.45
IV.MOMA.HNE. ML:1.6 0.00010882356500000002 1.424 AML other m 2020-03-31T08:14:29.93
IV.MOMA.HHN. ML:1.1 0.000034183425000000004 1.7216 AML other m 2020-03-31T08:14:30.04
IV.MF5.EHE. ML:1.9 0.0003200535 0.1952 AML other m 2020-03-31T08:14:31.61
IV.TERO.HNE. ML:1.5 0.00009588944 0.5824 AML other m 2020-03-31T08:14:32.31
IV.MTRA.HNN. ML:1.4 0.00016137404999999998 0.2752 AML other m 2020-03-31T08:14:32.52
IV.MTRA.EHN. ML:1.4 0.00014384560000000002 0.2624 AML other m 2020-03-31T08:14:32.65
IV.MTRA.HNE. ML:1.3 0.00013518049999999997 0.3904 AML other m 2020-03-31T08:14:32.75
IV.CESI.HHN. ML:1.2 0.000080614545 0.2048 AML other m 2020-03-31T08:14:33.00
IV.CESI.HNN. ML:1.4 0.000115926955 0.3328 AML other m 2020-03-31T08:14:33.00
IV.MTRA.EHE. ML:1.2 0.0001089425 0.2176 AML other m 2020-03-31T08:14:33.42
IV.FDMO.HHN. ML:1.0 0.000061938685 0.16 AML other m 2020-03-31T08:14:33.61
IV.RM33.EHN. ML:1.1 0.000052570334999999996 0.2816 AML other m 2020-03-31T08:14:33.79
IV.FDMO.HHE. ML:1.1 0.000062637605 0.1792 AML other m 2020-03-31T08:14:34.09
IV.SMA1.EHN. ML:1.2 0.00008613373000000001 0.2816 AML other m 2020-03-31T08:14:34.97
IV.RM33.EHE. ML:1.0 0.00004235260297 1.8208 AML other m 2020-03-31T08:14:35.91
IV.CESI.HHE. ML:1.0 0.000052776236 1.7632 AML other m 2020-03-31T08:14:35.91
IV.CSP1.EHE. ML:1.0 0.000043139874999999995 1.7824 AML other m 2020-03-31T08:14:36.91
IV.SMA1.EHE. ML:1.2 0.00010052859 0.416 AML other m 2020-03-31T08:14:36.34
IV.TERO.HHN. ML:0.9 0.000026340555 0.0576 AML other m 2020-03-31T08:14:37.82
IV.TERO.HHE. ML:0.9 0.000024685150000000002 0.16 AML other m 2020-03-31T08:14:38.18
IV.EL6.EHE. ML:1.9 0.00016290195 0.2208 AML other m 2020-03-31T08:14:38.24
IV.MOMA.HHE. ML:0.9 0.000023128760000000002 0.1344 AML other m 2020-03-31T08:14:39.11
IV.RM33.HNN. ML:1.3 0.000086825085 0.704 AML other m 2020-03-31T08:14:41.37
IV.EL6.EHN. ML:1.6 0.000079426715 1.4208 AML other m 2020-03-31T08:14:41.13
IV.MOMA.HNN. ML:1.6 0.00011859029500000002 0.7104 AML other m 2020-03-31T08:14:41.58
IV.RM33.HNE. ML:1.4 0.000115824995 0.6784 AML other m 2020-03-31T08:14:43.73
IV.TERO.HNN. ML:1.8 0.00017983310000000002 0.7712 AML other m 2020-03-31T08:14:51.60
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