Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 31-07-2019 and time 13:01:29 (Italy) in region Preci (PG)

A magnitude ML 1.2 earthquake occured in region: Preci (PG), on

  • 31-07-2019 11:01:29 (UTC)
  • 31-07-2019 13:01:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8820, 13.0370 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.

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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
Preci PG 0 724 724
Visso MC 7 1107 1831
Sellano PG 9 1079 2910
Castelsantangelo sul Nera MC 10 281 3191
Norcia PG 11 4957 8148
Ussita MC 11 444 8592
Cerreto di Spoleto PG 12 1075 9667
Monte Cavallo MC 13 145 9812
Fiordimonte MC 18 202 10014
Pieve Torina MC 18 1458 11472
Cascia PG 18 3217 14689
Vallo di Nera PG 19 364 15053
Fiastra MC 20 559 15612

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
58 Km E of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
100 Km W of Montesilvano (53738 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 1.2 2019-07-31
11:01:29		 42.8817 13.0368 9 2019-07-31
11:09:52		 Sala Sismica INGV-Roma 71056081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-31 11:01:29 ± 0.05
Latitude 42.8817 ± 0.0027
Longitude 13.0368 ± 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 71056081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 290
Semi-minor axis of confidence ellipse (meter) 277
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39480
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 71056081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-31 11:09:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2019-07-31T11:01:51.53 3.0 positive manual P 1.72 0
IV.RM33.EHZ. 2019-07-31T11:01:43.48 0.3 undecidable manual S 161 43.8228 50 -0.24 68
IV.MF5.EHZ. 2019-07-31T11:01:42.13 0.1 undecidable manual S 71 36.3414 50 0.41 88
IV.MOMA.HHZ. 2019-07-31T11:01:42.57 0.1 undecidable manual S 257 38.9277 50 0.14 93
IT.GNU.HGE. 2019-07-31T11:01:42.86 0.3 undecidable manual S 257 38.9277 50 0.44 65
IV.ASSB.HHZ. 2019-07-31T11:01:41.00 0.1 undecidable manual S 300 35.5422 50 -0.51 86
IV.LNSS.HHE. 2019-07-31T11:01:40.18 0.3 undecidable manual S 179 30.9468 50 -0.11 71
IV.MML1.EHE. 2019-07-31T11:01:38.47 0.1 undecidable manual S 348 26.2515 109 -0.29 92
IV.RM33.EHZ. 2019-07-31T11:01:37.36 0.3 undecidable manual P 161 43.8228 50 -0.19 68
IV.MMO1.EHZ. 2019-07-31T11:01:37.44 0.1 undecidable manual S 85 23.6541 111 -0.47 89
IV.GAVE.EHZ. 2019-07-31T11:01:37.81 0.1 undecidable manual S 209 24.0537 111 -0.22 94
IV.CESI.HHZ. 2019-07-31T11:01:36.08 0.1 undecidable manual S 322 17.3715 117 0.15 96
IV.ASSB.HHZ. 2019-07-31T11:01:36.00 0.1 undecidable manual P 300 35.5422 50 -0.28 91
IV.MF5.EHZ. 2019-07-31T11:01:36.41 0.1 undecidable manual P 71 36.3414 50 0.01 96
IV.MOMA.HHZ. 2019-07-31T11:01:36.97 0.1 undecidable manual P 257 38.9277 50 0.17 92
IT.GNU.HGE. 2019-07-31T11:01:36.97 0.3 undecidable manual P 257 38.9277 50 0.17 69
IV.LNSS.HHE. 2019-07-31T11:01:35.90 0.3 undecidable manual P 179 30.9468 50 0.33 68
IV.FDMO.HHZ. 2019-07-31T11:01:35.83 0.1 undecidable manual S 13 17.6712 117 -0.18 95
IV.GAVE.EHZ. 2019-07-31T11:01:34.18 0.1 undecidable manual P 209 24.0537 111 -0.09 96
IT.MTCL.HGE. 2019-07-31T11:01:34.57 0.1 undecidable manual S 346 12.7761 125 0 100
IV.MML1.EHE. 2019-07-31T11:01:34.60 0.1 undecidable manual P 348 26.2515 109 -0.09 96
IV.MC2.EHZ. 2019-07-31T11:01:34.81 0.1 undecidable manual S 75 12.7761 125 0.25 95
IV.FDMO.HHZ. 2019-07-31T11:01:33.10 0.1 undecidable manual P 13 17.6712 117 0 99
IV.NRCA.HNZ. 2019-07-31T11:01:33.41 0.1 undecidable manual S 130 8.2806 138 0.04 100
IV.CESI.HHZ. 2019-07-31T11:01:33.17 0.1 undecidable manual P 322 17.3715 117 0.12 97
IV.FEMA.HNE. 2019-07-31T11:01:33.66 0.1 undecidable manual S 7 8.9799 135 0.11 98
IV.MMO1.EHZ. 2019-07-31T11:01:33.93 0.1 negative manual P 85 23.6541 111 -0.27 93
IV.MC2.EHZ. 2019-07-31T11:01:32.45 0.1 negative manual P 75 12.7761 125 0.18 96
IT.MTCL.HGE. 2019-07-31T11:01:32.33 0.1 undecidable manual P 346 12.7761 125 0.06 99
IV.NRCA.HNZ. 2019-07-31T11:01:31.71 0.1 undecidable manual P 130 8.2806 138 0.13 98
IV.FEMA.HNE. 2019-07-31T11:01:31.97 0.1 undecidable manual P 7 8.9799 135 0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.0004317878 0.1216 AML other m 2019-07-31T11:01:34.02
IV.NRCA.HHN. ML:1.8 0.0008885853999999999 0.1152 AML other m 2019-07-31T11:01:33.51
IV.NRCA.HNE. ML:1.4 0.00037815814999999996 0.1088 AML other m 2019-07-31T11:01:34.01
IV.NRCA.HNN. ML:1.7 0.00079900325 0.1152 AML other m 2019-07-31T11:01:33.51
IV.FDMO.HHE. ML:1.3 0.00018255375000000002 0.16 AML other m 2019-07-31T11:01:36.11
IV.FDMO.HHN. ML:1.1 0.000104355325 0.1408 AML other m 2019-07-31T11:01:36.44
IV.CESI.HNE. ML:1.2 0.00014383047499999998 0.192 AML other m 2019-07-31T11:01:36.12
IV.CESI.HHE. ML:1.2 0.00013859464999999997 0.1792 AML other m 2019-07-31T11:01:36.11
IV.CESI.HHN. ML:1.3 0.00015794057 0.0832 AML other m 2019-07-31T11:01:36.12
IV.GAVE.EHE. ML:1.3 0.00012812 0.1216 AML other m 2019-07-31T11:01:38.38
IV.GAVE.EHN. ML:1.2 0.00010732096 0.1984 AML other m 2019-07-31T11:01:38.43
IV.ASSB.HHE. ML:1.0 0.00004332814 0.0832 AML other m 2019-07-31T11:01:41.51
IV.ASSB.HHN. ML:1.2 0.000058376635 0.1408 AML other m 2019-07-31T11:01:41.28
IV.MF5.EHE. ML:1.2 0.000066279165 0.224 AML other m 2019-07-31T11:01:42.50
IV.MF5.EHN. ML:1.1 0.000050958379999999995 0.1984 AML other m 2019-07-31T11:01:42.83
IV.MOMA.HHE. ML:1.2 0.00005866361 0.1408 AML other m 2019-07-31T11:01:44.24
IV.MOMA.HHN. ML:1.1 0.000046241370000000005 0.1408 AML other m 2019-07-31T11:01:44.26
IV.RM33.EHE. ML:0.7 0.000016632738 0.48 AML other m 2019-07-31T11:01:45.65
IV.RM33.EHN. ML:0.7 0.000012992584 0.1216 AML other m 2019-07-31T11:01:45.13
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