Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 25-08-2019 and time 05:39:37 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 8 km E Norcia (PG), on

  • 25-08-2019 03:39:37 (UTC)
  • 25-08-2019 05:39:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.19 at 8 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.

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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 8 4957 4957
Arquata del Tronto AP 9 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Montegallo AP 13 523 7606
Cascia PG 16 3217 10823
Preci PG 17 724 11547
Montemonaco AP 17 604 12151
Acquasanta Terme AP 18 2916 15067
Cittareale RI 18 482 15549
Amatrice RI 19 2657 18206
Visso MC 19 1107 19313
Ussita MC 19 444 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
44 Km E of Foligno (57155 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
51 Km E of Terni (111501 inhabitants)
75 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km S of Ancona (100861 inhabitants)
98 Km E 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 1.3 2019-08-25
03:39:37		 42.78 13.19 8 2019-08-25
03:53:16		 Sala Sismica INGV-Roma 71782951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-25 03:39:37 ± 0.05
Latitude 42.78 ± 0.00
Longitude 13.19 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71782951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 247
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 0.74014
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 29
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 59
Type of magnitude ML
Reference to an origin 71782951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-25 03:53:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2019-08-25T03:40:03.83 0.3 undecidable manual S 346 0.7401 50 1.04 48
IV.MURB.HHZ. 2019-08-25T03:40:02.20 0.6 undecidable manual S 315 0.6862 50 1 33
IV.FOSV.EHZ. 2019-08-25T03:39:59.00 0.3 undecidable manual S 329 0.6025 50 0.27 66
IV.VCEL.EHZ. 2019-08-25T03:39:59.96 0.6 undecidable manual S 129 0.6133 50 0.93 35
IV.ATCC.EHZ. 2019-08-25T03:39:58.03 0.3 undecidable manual S 315 0.572 50 0.22 67
IV.EL6.EHZ. 2019-08-25T03:39:57.75 0.3 undecidable manual S 353 0.5522 50 0.52 63
IV.FIAM.HHZ. 2019-08-25T03:39:56.00 0.3 undecidable manual S 186 0.5162 50 -0.15 69
IV.SNTG.HHZ. 2019-08-25T03:39:56.10 0.3 undecidable manual S 339 0.5081 50 0.16 69
IV.MOMA.HHZ. 2019-08-25T03:39:54.51 0.3 undecidable manual S 273 0.4578 50 0.07 71
IV.GIGS.HHZ. 2019-08-25T03:39:53.23 0.3 undecidable manual S 139 0.4299 50 -0.39 66
IV.ARRO.EHZ. 2019-08-25T03:39:52.12 0.3 undecidable manual S 237 0.3732 50 0.18 70
IV.ARVD.HHZ. 2019-08-25T03:39:52.16 0.3 undecidable manual P 346 0.7401 50 0.01 67
IV.MURB.HHZ. 2019-08-25T03:39:51.13 0.3 undecidable manual P 315 0.6862 50 -0.1 67
IV.VCEL.EHZ. 2019-08-25T03:39:50.35 0.3 undecidable manual P 129 0.6133 50 0.37 64
IV.TERO.HHZ. 2019-08-25T03:39:50.25 0.3 undecidable manual S 118 0.3399 50 -0.7 61
IV.CSP1.EHZ. 2019-08-25T03:39:49.54 0.3 undecidable manual S 2 0.3103 102 -0.32 69
IV.MF5.EHZ. 2019-08-25T03:39:49.49 0.3 undecidable manual S 43 0.2842 103 0.64 63
IV.CESI.HHZ. 2019-08-25T03:39:49.29 0.3 undecidable manual S 317 0.3076 102 -0.46 67
IV.FOSV.EHZ. 2019-08-25T03:39:49.51 0.6 undecidable manual P 329 0.6025 50 -0.3 44
IV.GUMA.HHZ. 2019-08-25T03:39:49.47 0.3 undecidable manual S 20 0.3004 103 0.02 74
IV.EL6.EHZ. 2019-08-25T03:39:48.82 0.3 undecidable manual P 353 0.5522 50 -0.12 69
IV.FDMO.HHZ. 2019-08-25T03:39:48.06 0.6 undecidable manual S 343 0.2671 104 -0.16 48
IV.ATCC.EHZ. 2019-08-25T03:39:48.97 0.3 undecidable manual P 315 0.572 50 -0.31 66
IV.RM33.EHZ. 2019-08-25T03:39:48.49 0.3 undecidable manual S 177 0.2725 104 0.07 73
IV.CAMP.HHZ. 2019-08-25T03:39:48.54 0.3 undecidable manual S 147 0.2914 103 -0.61 64
IV.SNTG.HHZ. 2019-08-25T03:39:47.88 0.3 undecidable manual P 339 0.5081 50 -0.31 67
IV.MNTT.EHZ. 2019-08-25T03:39:47.27 3.0 undecidable manual P 0.4065 0.82 0
IV.GAVE.EHZ. 2019-08-25T03:39:47.55 0.3 undecidable manual S 248 0.2374 106 0.45 68
IT.MTCL.HGZ. 2019-08-25T03:39:47.47 0.6 undecidable manual S 326 0.2563 105 -0.33 46
IV.FIAM.HHZ. 2019-08-25T03:39:47.82 0.3 undecidable manual P 186 0.5162 50 -0.5 64
IV.MOMA.HHZ. 2019-08-25T03:39:47.11 0.3 undecidable manual P 273 0.4578 50 -0.22 69
IV.GIGS.HHZ. 2019-08-25T03:39:46.28 0.3 undecidable manual P 139 0.4299 50 -0.57 63
IV.OFFI.HHZ. 2019-08-25T03:39:46.71 0.3 undecidable manual P 67 0.3921 50 0.51 65
IV.FEMA.HNZ. 2019-08-25T03:39:46.09 0.6 undecidable manual S 330 0.2095 108 0.01 50
IV.LNSS.HHZ. 2019-08-25T03:39:46.70 0.3 undecidable manual S 212 0.2104 108 0.57 66
IV.T1299.HNZ. 2019-08-25T03:39:45.07 0.3 undecidable manual S 156 0.1601 113 0.75 62
IV.SMA1.EHZ. 2019-08-25T03:39:45.28 0.3 undecidable manual S 145 0.1826 110 0.16 73
IV.ARRO.EHZ. 2019-08-25T03:39:45.55 0.6 undecidable manual P 237 0.3732 50 -0.33 45
IV.CESI.HHZ. 2019-08-25T03:39:44.23 0.1 positive manual P 317 0.3076 102 -0.39 91
IV.MMO1.EHZ. 2019-08-25T03:39:44.06 0.3 undecidable manual S 39 0.1529 114 0 76
IV.GUMA.HHZ. 2019-08-25T03:39:44.47 0.6 undecidable manual P 20 0.3004 103 0.02 49
IV.MTRA.EHZ. 2019-08-25T03:39:44.31 0.3 undecidable manual S 99 0.1511 114 0.34 71
IV.TERO.HHZ. 2019-08-25T03:39:44.60 0.6 undecidable manual P 118 0.3399 50 -0.71 40
IV.CSP1.EHZ. 2019-08-25T03:39:44.31 0.1 positive manual P 2 0.3103 102 -0.37 91
IV.MF5.EHZ. 2019-08-25T03:39:44.27 0.3 undecidable manual P 43 0.2842 103 0.17 72
IT.MTCL.HGZ. 2019-08-25T03:39:43.20 0.6 undecidable manual P 326 0.2563 105 -0.3 47
IV.RM33.EHZ. 2019-08-25T03:39:43.65 0.3 undecidable manual P 177 0.2725 104 -0.2 71
IV.CAMP.HHZ. 2019-08-25T03:39:43.89 0.3 undecidable manual P 147 0.2914 103 -0.38 68
IV.GAVE.EHZ. 2019-08-25T03:39:43.06 0.3 undecidable manual P 248 0.2374 106 -0.03 74
IV.FDMO.HHZ. 2019-08-25T03:39:43.43 0.3 undecidable manual P 343 0.2671 104 -0.3 70
IV.SMA1.EHZ. 2019-08-25T03:39:42.00 0.1 undecidable manual P 145 0.1826 110 0.05 100
IV.FEMA.HNZ. 2019-08-25T03:39:42.73 0.6 undecidable manual P 330 0.2095 108 0.23 48
IV.LNSS.HHZ. 2019-08-25T03:39:42.59 0.3 undecidable manual P 212 0.2104 108 0.06 74
IV.MMO1.EHZ. 2019-08-25T03:39:41.29 0.3 undecidable manual P 39 0.1529 114 -0.05 75
IV.T1299.HNZ. 2019-08-25T03:39:41.88 0.3 undecidable manual P 156 0.1601 113 0.4 70
IV.MTRA.EHZ. 2019-08-25T03:39:41.30 0.3 undecidable manual P 99 0.1511 114 0.01 76
IV.NRCA.HNZ. 2019-08-25T03:39:41.58 0.3 undecidable manual S 312 0.0782 131 -0.01 77
IV.NRCA.HNZ. 2019-08-25T03:39:40.05 0.1 positive manual P 312 0.0782 131 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHN. ML:0 5.920126E-5 0.32 AML other m 2019-08-25T03:40:06.74
IV.MURB.HHE. ML:0 4.487391E-5 0.2192 AML other m 2019-08-25T03:40:07.00
IV.NRCA.HHE. ML:2.5 0.0058850405 0.1008 AML other m 2019-08-25T03:39:41.89
IV.NRCA.HHN. ML:2.3 0.0033713405 0.1008 AML other m 2019-08-25T03:39:41.81
IV.NRCA.HNE. ML:2.5 0.0055167285 0.1008 AML other m 2019-08-25T03:39:41.89
IV.NRCA.HNN. ML:2.2 0.0029143395 0.1008 AML other m 2019-08-25T03:39:41.81
IV.MTRA.EHE. ML:1.6 0.00033764965 0.3008 AML other m 2019-08-25T03:39:44.69
IV.MTRA.EHN. ML:1.6 0.0003462808 0.2192 AML other m 2019-08-25T03:39:44.74
IV.MTRA.HNE. ML:1.5 0.00032323805 0.2992 AML other m 2019-08-25T03:39:44.83
IV.MTRA.HNN. ML:1.6 0.00039043735 0.2208 AML other m 2019-08-25T03:39:44.73
IV.SMA1.EHE. ML:1.4 0.0001718996 0.3408 AML other m 2019-08-25T03:39:50.01
IV.SMA1.EHN. ML:1.5 0.0002329421 0.32 AML other m 2019-08-25T03:39:47.75
IV.LNSS.HNE. ML:1.1 8.3168965E-5 0.2 AML other m 2019-08-25T03:39:48.92
IV.LNSS.HNN. ML:1.4 0.00016893175 0.3408 AML other m 2019-08-25T03:39:49.20
IV.LNSS.HHE. ML:1.2 0.00010039355 0.1408 AML other m 2019-08-25T03:39:48.41
IV.LNSS.HHN. ML:1.3 0.000139813185 0.2 AML other m 2019-08-25T03:39:48.42
IV.GAVE.HNE. ML:1.4 0.00016232444 0.3008 AML other m 2019-08-25T03:39:50.02
IV.GAVE.EHE. ML:1.5 0.00016870065 0.1808 AML other m 2019-08-25T03:39:50.03
IV.GAVE.EHN. ML:1.3 0.00012130528 0.2 AML other m 2019-08-25T03:39:47.70
IV.FDMO.HHE. ML:1.1 6.6026025E-5 0.16 AML other m 2019-08-25T03:39:49.34
IV.FDMO.HHN. ML:1.2 7.9235825E-5 0.24 AML other m 2019-08-25T03:39:50.79
IV.RM33.HNE. ML:1.5 0.0001469666 0.1504 AML other m 2019-08-25T03:39:49.14
IV.RM33.HNN. ML:1.4 0.00013888285 0.16 AML other m 2019-08-25T03:39:49.64
IV.RM33.EHE. ML:1.4 0.00014164665 0.1408 AML other m 2019-08-25T03:39:49.22
IV.RM33.EHN. ML:1.4 0.000112354875 0.16 AML other m 2019-08-25T03:39:49.25
IV.CAMP.HHE. ML:1.2 6.7924495E-5 0.1808 AML other m 2019-08-25T03:39:48.86
IV.CAMP.HHN. ML:1.1 5.4771815E-5 0.2192 AML other m 2019-08-25T03:39:48.78
IV.CESI.HHE. ML:1.3 7.9344365E-5 0.2416 AML other m 2019-08-25T03:39:50.59
IV.CESI.HHN. ML:1.5 0.00014470285 0.28 AML other m 2019-08-25T03:39:49.76
IV.CESI.HNE. ML:1.4 9.399107E-5 0.3088 AML other m 2019-08-25T03:39:50.60
IV.CESI.HNN. ML:1.6 0.00014837685 0.2496 AML other m 2019-08-25T03:39:50.59
IV.MF5.EHE. ML:1.3 8.6404445E-5 0.4192 AML other m 2019-08-25T03:39:49.84
IV.MF5.EHN. ML:1.4 0.00012873465 0.4608 AML other m 2019-08-25T03:39:49.76
IV.CSP1.EHE. ML:1.5 0.0001196799 0.2608 AML other m 2019-08-25T03:39:49.82
IV.CSP1.EHN. ML:1.5 0.00011908595 0.2192 AML other m 2019-08-25T03:39:49.91
IV.GUMA.HHE. ML:1.8 0.00029173185 0.2192 AML other m 2019-08-25T03:39:51.44
IV.GUMA.HHN. ML:1.8 0.0002451341 0.3408 AML other m 2019-08-25T03:39:52.16
IV.GUMA.HNE. ML:1.7 0.00022772255 0.4704 AML other m 2019-08-25T03:39:52.17
IV.TERO.HHE. ML:1.2 6.09903E-5 0.08 AML other m 2019-08-25T03:39:50.57
IV.TERO.HHN. ML:1.5 0.000108648915 0.1008 AML other m 2019-08-25T03:39:50.57
IV.ARRO.EHE. ML:0.9 2.497263E-5 0.2208 AML other m 2019-08-25T03:39:53.09
IV.ARRO.EHN. ML:0.9 2.6548865E-5 0.1808 AML other m 2019-08-25T03:39:55.03
IV.GIGS.HHE. ML:0.6 1.21198405E-5 0.1008 AML other m 2019-08-25T03:39:53.84
IV.GIGS.HHN. ML:0.7 1.335574E-5 0.16 AML other m 2019-08-25T03:39:54.92
IV.MOMA.HHE. ML:1.5 7.304956E-5 0.16 AML other m 2019-08-25T03:39:57.36
IV.MOMA.HHN. ML:1.3 5.3395915E-5 0.16 AML other m 2019-08-25T03:39:56.27
IV.MOMA.HNE. ML:1.6 0.000101997815 0.2096 AML other m 2019-08-25T03:39:57.45
IV.MNTT.EHE. ML:1.6 0.0001311639 0.4592 AML other m 2019-08-25T03:39:56.57
IV.MNTT.EHN. ML:1.7 0.0001561993 0.2992 AML other m 2019-08-25T03:39:57.82
IV.FIAM.HHE. ML:0.8 1.461927E-5 0.16 AML other m 2019-08-25T03:39:56.92
IV.FIAM.HHN. ML:0.7 1.2059655E-5 0.1792 AML other m 2019-08-25T03:39:57.08
IV.SNTG.HHE. ML:1.1 2.812794E-5 0.12 AML other m 2019-08-25T03:39:56.77
IV.SNTG.HHN. ML:1.1 3.0046545E-5 0.16 AML other m 2019-08-25T03:39:56.53
IV.EL6.EHE. ML:1.4 4.7372145E-5 0.24 AML other m 2019-08-25T03:39:59.87
IV.EL6.EHN. ML:1.4 5.354824E-5 0.1392 AML other m 2019-08-25T03:39:58.89
IV.ATCC.EHE. ML:1.3 3.378407E-5 0.1808 AML other m 2019-08-25T03:40:00.65
IV.ATCC.EHN. ML:1.2 2.8214255E-5 0.28 AML other m 2019-08-25T03:40:02.43
IV.FOSV.EHE. ML:1.4 4.0967435E-5 0.32 AML other m 2019-08-25T03:39:59.71
IV.FOSV.EHN. ML:1.3 3.643707E-5 0.28 AML other m 2019-08-25T03:40:00.97
IV.VCEL.EHE. ML:1.2 2.56503355E-5 0.24 AML other m 2019-08-25T03:40:01.41
IV.VCEL.EHN. ML:1.1 1.781205E-5 0.1616 AML other m 2019-08-25T03:40:00.75
IV.ARVD.HHE. ML:1 1.3995785E-5 0.1408 AML other m 2019-08-25T03:40:07.56
IV.ARVD.HHN. ML:1 1.259774E-5 0.1408 AML other m 2019-08-25T03:40:04.83
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