Earthquake with magnitude of ML 0.9 on date 01-07-2020 and time 22:40:04 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 7 km E Norcia (PG), on

  • 01-07-2020 20:40:04 (UTC)
  • 01-07-2020 22:40:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.17 at 10 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
Arquata del Tronto AP 10 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 15 3217 10300
Montegallo AP 15 523 10823
Preci PG 15 724 11547
Cittareale RI 18 482 12029
Visso MC 18 1107 13136
Montemonaco AP 18 604 13740
Ussita MC 18 444 14184
Amatrice RI 19 2657 16841
Acquasanta Terme AP 19 2916 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
49 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
97 Km SW of Ancona (100861 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
Reviewed
Rev100
ML 0.9 2020-07-01
20:40:04
42.78 13.17 10 2020-07-01
20:48:39
Sala Sismica INGV-Roma 80684931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-01 20:40:04 ± 0.06
Latitude 42.78 ± 0.00
Longitude 13.17 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80684931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 322
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 17
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
Epicentral distance of station farthest from the epicenter (degree) 0.29768
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 80684931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-01 20:48:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-07-01T20:40:20.88 3.0 negative manual P 1.69 0
IV.CESI.HHZ. 2020-07-01T20:40:15.85 0.3 undecidable manual S 319 0.2977 50 0.04 73
IV.FDMO.HHZ. 2020-07-01T20:40:14.45 0.3 undecidable manual S 346 0.2626 50 -0.33 69
IV.SMA1.EHZ. 2020-07-01T20:40:12.65 0.1 undecidable manual S 142 0.1925 115 0.1 98
IV.LNSS.HHZ. 2020-07-01T20:40:12.87 0.3 undecidable manual S 209 0.2032 114 -0.06 74
IV.MTRA.EHZ. 2020-07-01T20:40:11.29 0.3 undecidable manual S 98 0.1664 119 -0.36 70
IV.MF5.EHZ. 2020-07-01T20:40:11.27 0.3 undecidable manual P 45 0.295 50 0.35 68
IV.TERO.HHZ. 2020-07-01T20:40:11.89 3.0 undecidable manual P -0.25 0
IV.MMO1.EHZ. 2020-07-01T20:40:11.39 0.3 undecidable manual S 44 0.1637 119 -0.17 73
IV.CSP1.EHZ. 2020-07-01T20:40:11.46 3.0 undecidable manual P 0.15 0
IV.CESI.HHZ. 2020-07-01T20:40:10.93 0.1 undecidable manual P 319 0.2977 50 -0.04 97
IV.FDMO.HHZ. 2020-07-01T20:40:10.27 0.3 undecidable manual P 346 0.2626 50 -0.1 72
IV.RM33.EHZ. 2020-07-01T20:40:10.63 3.0 negative manual P -0.04 0
IV.MC2.EHZ. 2020-07-01T20:40:10.72 0.1 undecidable manual S 5 0.1304 125 0.23 96
IV.SMA1.EHZ. 2020-07-01T20:40:09.03 0.1 undecidable manual P 142 0.1925 115 -0.05 99
IV.LNSS.HHZ. 2020-07-01T20:40:09.33 0.1 undecidable manual P 209 0.2032 114 0.03 99
IV.MMO1.EHZ. 2020-07-01T20:40:08.49 0.1 undecidable manual P 44 0.1637 119 -0.02 100
IV.NRCA.HHZ. 2020-07-01T20:40:08.48 0.1 undecidable manual S 321 0.0674 144 -0.25 97
IV.MTRA.EHZ. 2020-07-01T20:40:08.63 0.1 undecidable manual P 98 0.1664 119 0.07 99
IV.MC2.EHZ. 2020-07-01T20:40:08.10 0.1 undecidable manual P 5 0.1304 125 0.21 97
IV.NRCA.HHZ. 2020-07-01T20:40:07.01 0.1 undecidable manual P 321 0.0674 144 0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0002105 0.22 AML other m 2020-07-01T20:40:08.55
IV.NRCA.HHE. ML:1.4 0.0003505 0.18 AML other m 2020-07-01T20:40:08.68
IV.MTRA.EHN. ML:1.3 0.0001675 1.8 AML other m 2020-07-01T20:40:12.95
IV.MTRA.EHE. ML:1.3 0.0001455 0.16 AML other m 2020-07-01T20:40:12.77
IV.LNSS.HHN. ML:1.4 0.00015 0.26 AML other m 2020-07-01T20:40:13.18
IV.LNSS.HHE. ML:1.1 9.025E-5 0.28 AML other m 2020-07-01T20:40:13.19
IV.SMA1.EHN. ML:0.6 2.36E-5 0.5 AML other m 2020-07-01T20:40:14.48
IV.SMA1.EHE. ML:0.6 2.99E-5 1.26 AML other m 2020-07-01T20:40:14.34
IV.FDMO.HHE. ML:0.5 1.34E-5 0.86 AML other m 2020-07-01T20:40:15.17
IV.FDMO.HHN. ML:0.5 1.67E-5 0.22 AML other m 2020-07-01T20:40:15.34
IV.CESI.HHE. ML:0.8 2.445E-5 0.5 AML other m 2020-07-01T20:40:16.29
IV.RM33.EHN. ML:0.6 2.235E-5 0.28 AML other m 2020-07-01T20:40:16.18
IV.CESI.HHN. ML:1.1 5.09E-5 0.22 AML other m 2020-07-01T20:40:16.11
IV.RM33.EHE. ML:0.7 2.5E-5 1.3 AML other m 2020-07-01T20:40:16.90
IV.TERO.HHN. ML:0.6 1.615E-5 0.5 AML other m 2020-07-01T20:40:17.76
IV.TERO.HHE. ML:0.4 1.17E-5 1.1 AML other m 2020-07-01T20:40:19.01
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download