Earthquake with magnitude of ML 1.0 on date 01-03-2020 and time 03:21:20 (Italy) in region 1 km SE Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 1 km SE Norcia (PG), on

  • 01-03-2020 02:21:20 (UTC)
  • 01-03-2020 03:21:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.1 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.

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 1 4957 4957
Cascia PG 11 3217 8174
Preci PG 11 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Cerreto di Spoleto PG 15 1075 10254
Visso MC 16 1107 11361
Poggiodomo PG 16 117 11478
Accumoli RI 16 667 12145
Arquata del Tronto AP 16 1178 13323
Ussita MC 18 444 13767
Sellano PG 18 1079 14846
Vallo di Nera PG 20 364 15210
Monteleone di Spoleto PG 20 599 15809
Cittareale RI 20 482 16291
Montegallo AP 20 523 16814

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SE of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
100 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 1.0 2020-03-01
02:21:20
42.79 13.1 9 2020-03-01
02:29:11
Sala Sismica INGV-Roma 76940501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-01 02:21:20 ± 0.09
Latitude 42.79 ± 0.00
Longitude 13.10 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76940501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 425
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 119
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.32915
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 76940501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-01 02:29:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.GIZZ.HHZ. 2020-03-01T02:22:32.53 3.0 undecidable manual Pg 8.19 0
SI.KOSI.HHZ. 2020-03-01T02:22:10.88 3.0 negative manual Pg 0.27 0
IV.FIR.HHZ. 2020-03-01T02:22:00.30 3.0 undecidable manual Sg -1.78 0
IV.MAON.HHZ. 2020-03-01T02:21:58.91 3.0 undecidable manual Sg -4.15 0
TV.SF04.EHZ. 2020-03-01T02:21:52.62 3.0 undecidable manual Sg 1.52 0
IV.APEC.HHZ. 2020-03-01T02:21:42.10 3.0 undecidable manual Sg -0.21 0
IV.SFI.EHZ. 2020-03-01T02:21:40.25 3.0 undecidable manual Pg 1.95 0
IV.MF5.EHZ. 2020-03-01T02:21:33.30 0.6 undecidable manual S 53 0.3292 50 0.17 46
IV.CESI.HHZ. 2020-03-01T02:21:30.40 0.3 undecidable manual S 326 0.259 107 -0.39 67
IV.SMA1.EHN. 2020-03-01T02:21:29.46 0.3 undecidable manual S 133 0.2347 108 -0.45 66
IV.LNSS.HHZ. 2020-03-01T02:21:28.68 0.6 undecidable manual S 193 0.1925 112 0.31 46
IV.MMO1.EHZ. 2020-03-01T02:21:28.32 0.3 undecidable manual S 56 0.1988 111 -0.28 69
IV.TERO.HHZ. 2020-03-01T02:21:27.41 3.0 undecidable manual P -0.55 0
IV.GAVE.EHN. 2020-03-01T02:21:27.82 0.3 undecidable manual S 237 0.1808 113 -0.14 71
IV.MF5.EHZ. 2020-03-01T02:21:27.76 0.3 undecidable manual P 53 0.3292 50 0.01 71
IV.CSP1.EHZ. 2020-03-01T02:21:27.15 3.0 negative manual Pg 3.27 0
IV.CESI.HHZ. 2020-03-01T02:21:26.24 0.3 undecidable manual P 326 0.259 107 -0.16 70
IV.MC2.EHZ. 2020-03-01T02:21:26.77 0.3 undecidable manual S 28 0.1376 120 0.29 70
IV.SMA1.EHN. 2020-03-01T02:21:25.96 0.3 undecidable manual P 133 0.2347 108 0.08 72
IV.MMO1.EHZ. 2020-03-01T02:21:25.01 0.3 undecidable manual P 56 0.1988 111 -0.12 71
IV.LNSS.HHZ. 2020-03-01T02:21:25.08 0.1 undecidable manual P 193 0.1925 112 0.08 96
IV.GAVE.EHN. 2020-03-01T02:21:24.85 0.3 undecidable manual P 237 0.1808 113 0.09 72
IV.MC2.EHZ. 2020-03-01T02:21:24.21 0.3 undecidable manual P 28 0.1376 120 0.3 70
IV.NRCA.HHZ. 2020-03-01T02:21:23.88 0.1 undecidable manual S 13 0.045 150 0.03 100
IV.NRCA.HHZ. 2020-03-01T02:21:22.66 0.3 undecidable manual P 13 0.045 150 0.27 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.3 0.000361 1.28 AML other m 2020-03-01T02:21:24.02
IV.NRCA.HNE. ML:1.6 0.0007895 0.1 AML other m 2020-03-01T02:21:24.11
IV.NRCA.HHE. ML:1.6 0.000824 0.1 AML other m 2020-03-01T02:21:24.11
IV.NRCA.HHN. ML:1.3 0.0003845 0.78 AML other m 2020-03-01T02:21:24.59
IV.FIR.HHN. ML:2.7 0.0001695 1.48 AML other m 2020-03-01T02:22:03.24
IV.FIR.HHE. ML:2.9 0.000267 0.14 AML other m 2020-03-01T02:22:04.12
IV.FIR.HNE. ML:2.8 0.000247 0.62 AML other m 2020-03-01T02:22:05.54
IV.FIR.HNN. ML:2.8 0.0002325 0.5 AML other m 2020-03-01T02:22:06.40
IV.LNSS.HHE. ML:0.8 3.858886E-5 0.12 AML other m 2020-03-01T02:21:29.83
IV.LNSS.HHN. ML:0.8 3.7818395E-5 0.12 AML other m 2020-03-01T02:21:29.10
IV.LNSS.HNE. ML:0.8 3.7980505E-5 0.3104 AML other m 2020-03-01T02:21:29.06
IV.LNSS.HNN. ML:0.6 2.343075E-5 0.2592 AML other m 2020-03-01T02:21:28.80
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