Earthquake with magnitude of ML 0.7 on date 20-07-2019 and time 04:16:34 (UTC) in region 7 km SE Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 7 km SE Norcia (PG), on

  • 20-07-2019 04:16:34 (UTC)
  • 20-07-2019 06:16:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.74, 13.13 at 16 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.

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 7 4957 4957
Cascia PG 10 3217 8174
Accumoli RI 11 667 8841
Cittareale RI 14 482 9323
Arquata del Tronto AP 14 1178 10501
Poggiodomo PG 16 117 10618
Monteleone di Spoleto PG 17 599 11217
Preci PG 17 724 11941
Castelsantangelo sul Nera MC 18 281 12222
Amatrice RI 18 2657 14879
Cerreto di Spoleto PG 20 1075 15954

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of Foligno (57155 inhabitants)
44 Km E of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km W of Chieti (51815 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 0.7 2019-07-20
04:16:34
42.74 13.13 16 2019-07-20
04:24:13
Sala Sismica INGV-Roma 70728361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-20 04:16:34 ± 0.08
Latitude 42.74 ± 0.00
Longitude 13.13 ± 0.00
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70728361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 277
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
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) 99
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.29947
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 70728361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-20 04:24:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BRES.EHZ. 2019-07-20T04:18:06.51 3.0 undecidable manual Sn 7.43 0
GU.GSCL.HHZ. 2019-07-20T04:17:45.24 3.0 undecidable manual Sg 7.77 0
IV.PZUN.HHZ. 2019-07-20T04:17:40.41 3.0 undecidable manual Sn -3.49 0
IV.IMTC.HHZ. 2019-07-20T04:17:39.52 3.0 undecidable manual Sg 3.03 0
IV.GIUL.HHZ. 2019-07-20T04:17:09.39 3.0 undecidable manual Sn -9.99 0
IV.ATPI.EHZ. 2019-07-20T04:17:04.93 3.0 undecidable manual Sn -5.34 0
IV.MBAL.HNZ. 2019-07-20T04:17:04.22 3.0 undecidable manual Pn -3.34 0
IV.VULT.HHZ. 2019-07-20T04:17:01.17 3.0 positive manual Pn 0.74 0
IV.ZCCA.HHZ. 2019-07-20T04:17:00.73 3.0 undecidable manual Pg 2.87 0
IV.SERM.HNZ. 2019-07-20T04:16:57.37 3.0 undecidable manual Pn -2 0
IV.FDMO.HHZ. 2019-07-20T04:16:45.70 0.6 undecidable manual S 354 0.2995 102 -0.04 48
IV.MMO1.EHZ. 2019-07-20T04:16:43.40 0.6 undecidable manual S 42 0.2158 110 0.04 49
IV.RM33.EHZ. 2019-07-20T04:16:43.92 0.6 undecidable manual S 165 0.2374 107 -0.04 49
IV.SMA1.EHZ. 2019-07-20T04:16:42.42 0.6 undecidable manual S 125 0.1853 114 -0.1 49
IV.GAVE.EHZ. 2019-07-20T04:16:42.32 0.6 undecidable manual S 255 0.179 116 -0.03 49
IV.LNSS.HHZ. 2019-07-20T04:16:41.58 0.6 undecidable manual S 206 0.1502 122 -0.03 50
IV.FDMO.HHZ. 2019-07-20T04:16:40.70 0.3 undecidable manual P 354 0.2995 102 -0.2 70
IV.NARO.HHZ. 2019-07-20T04:16:40.95 3.0 undecidable manual P -3.77 0
IV.SMA1.EHZ. 2019-07-20T04:16:39.04 0.3 undecidable manual P 125 0.1853 114 0 75
IV.GAVE.EHZ. 2019-07-20T04:16:39.04 0.1 undecidable manual P 255 0.179 116 0.1 98
IV.MMO1.EHZ. 2019-07-20T04:16:39.68 0.3 undecidable manual P 42 0.2158 110 0.16 72
IV.RM33.EHZ. 2019-07-20T04:16:39.90 0.1 undecidable manual P 165 0.2374 107 0.03 98
IV.LNSS.HHZ. 2019-07-20T04:16:38.52 0.1 undecidable manual P 206 0.1502 122 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:0.8 3.58E-5 0.22 AML other m 2019-07-20T04:16:43.54
IV.SMA1.EHN. ML:0.6 2.415E-5 0.38 AML other m 2019-07-20T04:16:43.81
IV.GAVE.EHN. ML:0.7 3.685E-5 0.7 AML other m 2019-07-20T04:16:44.35
IV.GAVE.EHE. ML:0.8 3.77E-5 0.18 AML other m 2019-07-20T04:16:44.41
IV.RM33.EHN. ML:0.6 2.145E-5 0.78 AML other m 2019-07-20T04:16:44.30
IV.RM33.EHE. ML:0.7 2.28E-5 1.52 AML other m 2019-07-20T04:16:44.83
IV.VULT.HHN. ML:2.8 9.36E-5 0.06 AML other m 2019-07-20T04:17:08.18
IV.VULT.HHE. ML:3 0.0001295 0.06 AML other m 2019-07-20T04:17:08.16
IV.BRES.EHE. ML:2.9 3.01E-5 1.58 AML other m 2019-07-20T04:18:12.96
IV.BRES.EHN. ML:3 4.285E-5 1.54 AML other m 2019-07-20T04:18:30.18
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