Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 24-07-2020 and time 00:23:58 (Italy) in region 2 km NE Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 2 km NE Norcia (PG), on

  • 23-07-2020 22:23:58 (UTC)
  • 24-07-2020 00:23:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8070, 13.1150 at 9 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.

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 2 4957 4957
Preci PG 10 724 5681
Castelsantangelo sul Nera MC 10 281 5962
Cascia PG 13 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 15 1178 11464
Ussita MC 15 444 11908
Cerreto di Spoleto PG 16 1075 12983
Accumoli RI 17 667 13650
Sellano PG 18 1079 14729
Poggiodomo PG 18 117 14846
Montegallo AP 18 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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
Reviewed
Rev100 		ML 1.4 2020-07-23
22:23:58		 42.8073 13.1152 9 2020-07-23
22:29:05		 Sala Sismica INGV-Roma 81287321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-23 22:23:58 ± 0.05
Latitude 42.8073 ± 0.0027
Longitude 13.1152 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81287321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 245
Semi-minor axis of confidence ellipse (meter) 226
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 35
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51261
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 81287321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-23 22:29:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-07-23T22:24:23.84 3.0 undecidable manual S 0.06 0
IV.EL6.EHZ. 2020-07-23T22:24:17.77 3.0 undecidable manual S -0.09 0
IV.MF5.EHZ. 2020-07-23T22:24:11.28 0.3 undecidable manual S 54 34.4433 50 0.54 66
IV.RM33.EHZ. 2020-07-23T22:24:10.67 0.6 undecidable manual S 166 34.0437 50 0.03 49
IV.GUMA.HHZ. 2020-07-23T22:24:10.62 0.6 undecidable manual S 32 33.5442 50 0.12 48
IV.ATCC.EHZ. 2020-07-23T22:24:09.12 0.6 positive manual P 318 56.8986 50 0.02 48
IV.CSP1.EHZ. 2020-07-23T22:24:09.87 0.6 undecidable manual S 13 32.3454 50 -0.33 47
IV.EL6.EHZ. 2020-07-23T22:24:09.15 3.0 negative manual P -0.29 0
IV.CESI.HHZ. 2020-07-23T22:24:08.62 0.3 undecidable manual S 322 27.8499 108 -0.18 73
IV.OFFI.HHZ. 2020-07-23T22:24:08.42 0.6 negative manual P 73 48.5181 50 0.62 42
IV.SMA1.EHZ. 2020-07-23T22:24:08.21 0.6 undecidable manual S 137 26.5512 109 -0.18 48
IV.MNTT.EHZ. 2020-07-23T22:24:08.37 0.6 negative manual P 54 48.2184 50 0.62 42
IV.MTRA.EHZ. 2020-07-23T22:24:07.27 0.6 undecidable manual S 104 23.5542 111 -0.14 49
IV.MOMA.HHZ. 2020-07-23T22:24:07.26 1.0 negative manual P 270 44.3223 50 0.1 24
IV.LNSS.HHZ. 2020-07-23T22:24:07.54 0.3 undecidable manual S 195 23.4543 111 0.16 74
IV.FDMO.HHZ. 2020-07-23T22:24:07.81 0.3 undecidable manual S 355 25.5522 110 -0.24 72
IV.ASSB.HHZ. 2020-07-23T22:24:07.09 0.3 negative manual P 305 45.3213 50 -0.22 70
IV.GAVE.EHZ. 2020-07-23T22:24:07.05 0.3 undecidable manual S 235 22.0668 112 0.12 74
IV.MMO1.EHZ. 2020-07-23T22:24:06.16 0.3 undecidable manual S 59 20.0688 114 -0.12 75
IV.ARRO.EHZ. 2020-07-23T22:24:06.06 0.6 positive manual P 229 38.1285 50 -0.14 48
IV.TERO.HHZ. 2020-07-23T22:24:06.99 0.3 undecidable manual P 117 44.8218 50 -0.23 70
IV.GUMA.HHZ. 2020-07-23T22:24:05.49 0.1 negative manual P 32 33.5442 50 0 99
IV.CAMP.HHZ. 2020-07-23T22:24:05.88 0.1 undecidable manual P 141 38.5281 50 -0.37 91
IV.MF5.EHZ. 2020-07-23T22:24:05.68 0.6 positive manual P 54 34.4433 50 0.05 49
IV.CSP1.EHZ. 2020-07-23T22:24:05.07 1.0 negative manual P 13 32.3454 50 -0.25 24
IV.RM33.EHZ. 2020-07-23T22:24:05.29 1.0 undecidable manual P 166 34.0437 50 -0.29 23
IV.SMA1.EHZ. 2020-07-23T22:24:04.13 0.6 negative manual P 137 26.5512 109 -0.14 49
IV.CESI.HHZ. 2020-07-23T22:24:04.48 0.6 positive manual P 322 27.8499 108 -0.03 50
IV.GAVE.EHZ. 2020-07-23T22:24:03.55 0.1 positive manual P 235 22.0668 112 0.12 99
IV.MTRA.EHZ. 2020-07-23T22:24:03.58 0.1 undecidable manual P 104 23.5542 111 -0.13 99
IV.LNSS.HHZ. 2020-07-23T22:24:03.82 0.3 undecidable manual P 195 23.4543 111 0.13 74
IV.FDMO.HHZ. 2020-07-23T22:24:03.94 0.6 negative manual P 355 25.5522 110 -0.14 49
IV.MC2.EHZ. 2020-07-23T22:24:02.11 0.1 positive manual P 27 12.9759 125 0.28 97
IV.MMO1.EHZ. 2020-07-23T22:24:02.96 0.1 positive manual P 59 20.0688 114 -0.09 100
IV.NRCA.HHZ. 2020-07-23T22:24:01.95 0.6 undecidable manual S 359 2.8971 162 0 52
IV.NRCA.HHZ. 2020-07-23T22:24:00.80 0.1 undecidable manual P 359 2.8971 162 0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.6 0.000225 0.66 AML other m 2020-07-23T22:24:07.55
IV.LNSS.HHE. ML:1.7 0.0003005 0.4 AML other m 2020-07-23T22:24:07.70
IV.GAVE.EHN. ML:1.6 0.0002615 1.54 AML other m 2020-07-23T22:24:08.02
IV.MTRA.EHN. ML:1.5 0.0002205 1.82 AML other m 2020-07-23T22:24:08.96
IV.LNSS.HHN. ML:1.5 0.0002065 1.2 AML other m 2020-07-23T22:24:08.78
IV.FDMO.HHE. ML:1.1 0.00007500000000000001 0.58 AML other m 2020-07-23T22:24:08.46
IV.GAVE.EHE. ML:1.6 0.000248 0.26 AML other m 2020-07-23T22:24:08.94
IV.CESI.HHN. ML:1.7 0.00028000000000000003 1.66 AML other m 2020-07-23T22:24:08.03
IV.SMA1.EHN. ML:1.2 0.00010155 0.2 AML other m 2020-07-23T22:24:09.20
IV.CESI.HHE. ML:1.5 0.00015949999999999997 0.26 AML other m 2020-07-23T22:24:09.09
IV.FDMO.HHN. ML:1.1 0.00006839999999999998 0.14 AML other m 2020-07-23T22:24:09.71
IV.SMA1.EHE. ML:1.4 0.0001565 0.36 AML other m 2020-07-23T22:24:10.75
IV.RM33.EHN. ML:1.0 0.000043650000000000004 0.08 AML other m 2020-07-23T22:24:11.18
IV.CAMP.HHN. ML:1.1 0.00004445 0.6 AML other m 2020-07-23T22:24:11.52
IV.GUMA.HHE. ML:1.7 0.0001955 0.24 AML other m 2020-07-23T22:24:11.58
IV.CAMP.HHE. ML:1.1 0.0000431 0.22 AML other m 2020-07-23T22:24:11.50
IV.RM33.EHE. ML:1.1 0.000047600000000000005 0.14 AML other m 2020-07-23T22:24:12.40
IV.ARRO.EHN. ML:1.1 0.000044899999999999994 0.24 AML other m 2020-07-23T22:24:12.57
IV.TERO.HHN. ML:1.4 0.0000698 0.32 AML other m 2020-07-23T22:24:13.46
IV.GUMA.HHN. ML:1.7 0.00021050000000000002 0.52 AML other m 2020-07-23T22:24:13.34
IV.ASSB.HHN. ML:1.3 0.00005485 1.16 AML other m 2020-07-23T22:24:13.99
IV.ARRO.EHE. ML:1.0 0.0000395 0.92 AML other m 2020-07-23T22:24:14.05
IV.ASSB.HHE. ML:1.4 0.0000707 0.88 AML other m 2020-07-23T22:24:14.42
IV.TERO.HHE. ML:1.3 0.00005355 1.54 AML other m 2020-07-23T22:24:14.12
IV.MOMA.HHE. ML:1.3 0.00005605 0.62 AML other m 2020-07-23T22:24:15.26
IV.MOMA.HHN. ML:1.1 0.00003795 1.72 AML other m 2020-07-23T22:24:16.12
IV.MNTT.EHE. ML:1.8 0.0001565 0.22 AML other m 2020-07-23T22:24:16.48
IV.MNTT.EHN. ML:1.9 0.0002185 0.88 AML other m 2020-07-23T22:24:17.16
IV.ATCC.EHE. ML:1.3 0.000041349999999999995 0.14 AML other m 2020-07-23T22:24:18.20
IV.OFFI.HHN. ML:1.5 0.000084 0.3 AML other m 2020-07-23T22:24:18.29
IV.ATCC.EHN. ML:1.3 0.0000446 0.64 AML other m 2020-07-23T22:24:18.00
IV.OFFI.HHE. ML:1.4 0.00007435 0.52 AML other m 2020-07-23T22:24:19.36
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