Earthquake with magnitude of ML 1.1 on date 31-03-2020 and time 14:00:45 (UTC) in region 4 km W Preci (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km W Preci (PG), on

  • 31-03-2020 14:00:45 (UTC)
  • 31-03-2020 16:00:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.88, 12.99 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
Preci PG 4 724 724
Sellano PG 5 1079 1803
Cerreto di Spoleto PG 9 1075 2878
Visso MC 10 1107 3985
Monte Cavallo MC 12 145 4130
Norcia PG 13 4957 9087
Castelsantangelo sul Nera MC 14 281 9368
Ussita MC 14 444 9812
Vallo di Nera PG 16 364 10176
Cascia PG 18 3217 13393
Campello sul Clitunno PG 19 2442 15835
Pieve Torina MC 19 1458 17293
Fiordimonte MC 19 202 17495
Poggiodomo PG 20 117 17612
Trevi PG 20 8469 26081

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
92 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
Rev 100 ML 1.1 2020-03-31
14:00:45
42.88 12.99 9 2020-03-31
14:11:53
Sala Sismica INGV-Roma 77730011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-31 14:00:45 ± 0.04
Latitude 42.88 ± 0.00
Longitude 12.99 ± 0.00
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 77730011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 254
Semi-minor axis of confidence ellipse (meter) 182
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.08993
Epicentral distance of station farthest from the epicenter (degree) 0.45326
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 77730011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-31 14:11:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-03-31T14:01:02.12 0.3 undecidable manual S 10 0.4533 50 0.4 65
IV.RM33.HNZ. 2020-03-31T14:01:00.59 0.3 undecidable manual S 156 0.4092 50 0.16 69
IV.CESX.HHE. 2020-03-31T14:01:00.32 0.6 undecidable manual S 227 0.4038 50 0.07 47
IV.SNTG.HHZ. 2020-03-31T14:00:59.46 0.6 undecidable manual S 355 0.3732 50 0.11 46
IV.PF6.EHE. 2020-03-31T14:00:56.78 0.3 undecidable manual S 31 0.295 50 -0.26 69
IV.LNSS.HNE. 2020-03-31T14:00:56.55 0.3 undecidable manual S 172 0.2833 50 -0.14 71
IV.CSP1.EHZ. 2020-03-31T14:00:56.11 0.3 undecidable manual S 37 0.2608 108 0.08 72
IV.MMO1.EHZ. 2020-03-31T14:00:55.44 0.3 undecidable manual S 86 0.2482 109 -0.1 72
IV.MML1.HNN. 2020-03-31T14:00:54.82 0.3 undecidable manual S 357 0.2302 110 -0.07 72
IV.EL6.EHZ. 2020-03-31T14:00:54.71 0.6 undecidable manual P 10 0.4533 50 -0.14 46
IV.CESX.HHE. 2020-03-31T14:00:54.04 0.1 undecidable manual P 227 0.4038 50 0.04 94
IV.ATCC.HNE. 2020-03-31T14:00:54.19 0.6 undecidable manual P 320 0.3948 50 0.34 44
IV.ARRO.EHE. 2020-03-31T14:00:53.11 0.3 undecidable manual P 208 0.3453 50 0.1 70
IV.RM33.HNZ. 2020-03-31T14:00:53.87 0.1 undecidable manual P 156 0.4092 50 -0.23 90
IV.SNTG.HHZ. 2020-03-31T14:00:53.39 0.3 undecidable manual P 355 0.3732 50 -0.09 70
IV.MOMA.HNN. 2020-03-31T14:00:52.70 0.6 undecidable manual P 256 0.3175 50 0.17 46
IV.MC2.EHZ. 2020-03-31T14:00:52.36 0.3 undecidable manual S 79 0.1493 119 0.31 70
IV.FDMO.HHZ. 2020-03-31T14:00:52.80 0.3 undecidable manual S 25 0.1691 116 0.08 73
IV.PF6.EHE. 2020-03-31T14:00:52.01 0.1 undecidable manual P 31 0.295 50 -0.14 94
IV.CSP1.EHZ. 2020-03-31T14:00:51.47 0.3 undecidable manual P 37 0.2608 108 -0.09 72
IV.CESI.HHZ. 2020-03-31T14:00:51.43 0.3 undecidable manual S 333 0.1358 122 -0.18 72
IV.MMO1.EHZ. 2020-03-31T14:00:51.05 0.6 undecidable manual P 86 0.2482 109 -0.23 47
IV.LNSS.HNE. 2020-03-31T14:00:51.87 0.1 undecidable manual P 172 0.2833 50 -0.07 95
IV.NRCA.HHZ. 2020-03-31T14:00:50.57 0.3 undecidable manual S 119 0.1043 129 -0.05 74
IV.MML1.HNN. 2020-03-31T14:00:50.78 0.1 undecidable manual P 357 0.2302 110 -0.12 95
IT.MTCL.HGE. 2020-03-31T14:00:50.60 0.3 undecidable manual S 4 0.1106 127 -0.2 72
IV.FEMA.HNE. 2020-03-31T14:00:50.28 0.3 undecidable manual S 30 0.0899 133 0.08 74
IV.CESI.HHZ. 2020-03-31T14:00:49.11 0.1 positive manual P 333 0.1358 122 0.1 98
IV.MC2.EHZ. 2020-03-31T14:00:49.45 0.6 undecidable manual P 79 0.1493 119 0.19 48
IV.FDMO.HHZ. 2020-03-31T14:00:49.63 0.3 undecidable manual P 25 0.1691 116 -0.02 74
IV.FEMA.HNE. 2020-03-31T14:00:48.32 0.1 undecidable manual P 30 0.0899 133 0.12 98
IV.NRCA.HHZ. 2020-03-31T14:00:48.52 0.1 undecidable manual P 119 0.1043 129 0.08 99
IT.MTCL.HGE. 2020-03-31T14:00:48.54 0.1 undecidable manual P 4 0.1106 127 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0002045 0.12 AML other m 2020-03-31T14:00:50.72
IV.NRCA.HHE. ML:1 0.0001315 0.1 AML other m 2020-03-31T14:00:51.07
IV.CESI.HHN. ML:1 0.0001105 1.02 AML other m 2020-03-31T14:00:52.02
IV.CESI.HHE. ML:1 8.84E-5 0.42 AML other m 2020-03-31T14:00:53.56
IV.FDMO.HHE. ML:1.2 0.000136 0.52 AML other m 2020-03-31T14:00:53.71
IV.FDMO.HHN. ML:1.1 0.0001039 0.58 AML other m 2020-03-31T14:00:53.25
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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