Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 31-10-2020 and time 14:14:19 (Italy) in region 1 km W Sant'Angelo in Pontano (MC)

A magnitude ML 1.7 earthquake occured in region: 1 km W Sant'Angelo in Pontano (MC), on

  • 31-10-2020 13:14:19 (UTC)
  • 31-10-2020 14:14:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1, 13.39 at 24 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
Sant'Angelo in Pontano MC 1 1436 1436
Ripe San Ginesio MC 5 852 2288
Gualdo MC 6 815 3103
San Ginesio MC 6 3498 6601
Penna San Giovanni MC 6 1108 7709
Falerone FM 7 3337 11046
Colmurano MC 7 1263 12309
Loro Piceno MC 8 2401 14710
Montappone FM 8 1682 16392
Monte Vidon Corrado FM 8 731 17123
Servigliano FM 9 2336 19459
Monte San Martino MC 9 765 20224
Massa Fermana FM 9 963 21187
Sarnano MC 10 3264 24451
Camporotondo di Fiastrone MC 10 563 25014
Cessapalombo MC 10 512 25526
Urbisaglia MC 11 2628 28154
Smerillo FM 12 365 28519
Mogliano MC 12 4696 33215
Belmonte Piceno FM 12 646 33861
Montegiorgio FM 13 6851 40712
Santa Vittoria in Matenano FM 13 1330 42042
Monteleone di Fermo FM 13 395 42437
Caldarola MC 14 1823 44260
Amandola FM 14 3629 47889
Belforte del Chienti MC 14 1886 49775
Montefalcone Appennino FM 14 424 50199
Monsampietro Morico FM 14 659 50858
Tolentino MC 14 20069 70927
Petriolo MC 15 1998 72925
Montelparo FM 15 778 73703
Francavilla d'Ete FM 16 964 74667
Comunanza AP 16 3166 77833
Montottone FM 17 979 78812
Magliano di Tenna FM 17 1452 80264
Grottazzolina FM 18 3398 83662
Bolognola MC 18 142 83804
Force AP 18 1354 85158
Monte Rinaldo FM 18 379 85537
Rapagnano FM 18 2145 87682
Serrapetrona MC 18 966 88648
Montefortino FM 18 1178 89826
Monte San Pietrangeli FM 19 2458 92284
Pollenza MC 19 6618 98902
Corridonia MC 19 15430 114332
Acquacanina MC 19 121 114453
Ortezzano FM 20 774 115227
Monte Giberto FM 20 801 116028

Municipalities with at least 50000 inhabitants

An earthquake occurred to
56 Km NW of Teramo (54892 inhabitants)
58 Km E of Foligno (57155 inhabitants)
58 Km S of Ancona (100861 inhabitants)
81 Km E of Perugia (166134 inhabitants)
84 Km N of L'Aquila (69753 inhabitants)
85 Km NE of Terni (111501 inhabitants)
88 Km SE of Fano (60888 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
98 Km SE of Pesaro (94582 inhabitants)
98 Km NW of Pescara (121014 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 1.7 2020-10-31
13:14:19		 43.1 13.39 24 2020-10-31
13:23:00		 Sala Sismica INGV-Roma 84320721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-31 13:14:19 ± 0.12
Latitude 43.10 ± 0.01
Longitude 13.39 ± 0.01
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84320721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 524
Semi-minor axis of confidence ellipse (meter) 470
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 211
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01079
Epicentral distance of station farthest from the epicenter (degree) 0.60704
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 84320721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-31 13:23:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-10-31T13:14:39.05 0.3 undecidable manual S 264 0.5351 105 0.54 62
IV.ATCC.EHZ. 2020-10-31T13:14:39.78 0.3 undecidable manual S 279 0.5513 104 0.81 56
IV.MTRA.EHZ. 2020-10-31T13:14:33.24 0.6 undecidable manual S 179 0.3462 114 0.01 48
IV.NRCA.HHZ. 2020-10-31T13:14:33.07 0.3 undecidable manual S 217 0.3354 115 0.14 70
IV.EL6.EHZ. 2020-10-31T13:14:32.46 0.3 undecidable manual S 317 0.3067 118 0.28 70
IV.CAMP.HHZ. 2020-10-31T13:14:31.07 0.3 undecidable manual P 178 0.5675 104 -0.05 69
IV.RM33.EHZ. 2020-10-31T13:14:31.79 0.6 undecidable manual P 192 0.607 103 0 46
IV.TERO.HHZ. 2020-10-31T13:14:30.23 0.3 undecidable manual P 162 0.5054 106 0.13 68
IV.FDMO.HHZ. 2020-10-31T13:14:30.09 0.6 undecidable manual S 253 0.2284 127 -0.13 49
IV.MC2.EHZ. 2020-10-31T13:14:30.78 0.3 undecidable manual S 217 0.2401 125 0.29 69
IV.ASSB.HHZ. 2020-10-31T13:14:30.62 0.3 undecidable manual P 264 0.5351 105 0.03 70
IV.ATCC.EHZ. 2020-10-31T13:14:30.87 0.1 undecidable manual P 279 0.5513 104 0.02 92
IV.MNTT.EHZ. 2020-10-31T13:14:29.57 0.3 undecidable manual S 105 0.1574 139 0.91 58
IV.SMA1.EHZ. 2020-10-31T13:14:29.28 0.3 undecidable manual P 185 0.4739 107 -0.3 67
IV.MMO1.EHZ. 2020-10-31T13:14:29.66 0.3 undecidable manual S 192 0.2086 130 -0.08 74
IV.MF5.EHZ. 2020-10-31T13:14:28.41 0.6 undecidable manual S 155 0.1268 145 0.31 47
IV.GUMA.HHE. 2020-10-31T13:14:27.10 0.6 undecidable manual S 223 0.0558 164 -0.08 51
IV.NRCA.HHZ. 2020-10-31T13:14:27.24 0.1 positive manual P 217 0.3354 115 -0.13 95
IV.MTRA.EHZ. 2020-10-31T13:14:27.21 0.3 undecidable manual P 179 0.3462 114 -0.33 68
IV.CSP1.EHZ. 2020-10-31T13:14:27.96 0.3 undecidable manual S 265 0.1331 144 -0.25 72
IV.SNTG.HHZ. 2020-10-31T13:14:27.59 0.1 undecidable manual P 295 0.3588 113 -0.15 93
IV.EL6.EHZ. 2020-10-31T13:14:26.89 0.1 undecidable manual P 317 0.3067 118 -0.04 95
IV.SAP2.EHZ. 2020-10-31T13:14:26.74 0.3 undecidable manual S 127 0.0108 177 -0.21 74
IV.MMO1.EHZ. 2020-10-31T13:14:25.32 0.1 positive manual P 192 0.2086 130 -0.2 96
IV.FDMO.HHZ. 2020-10-31T13:14:25.59 0.1 undecidable manual P 253 0.2284 127 -0.21 95
IV.MNTT.EHZ. 2020-10-31T13:14:25.11 0.1 undecidable manual P 105 0.1574 139 0.21 97
IV.MC2.EHZ. 2020-10-31T13:14:25.91 0.3 positive manual P 217 0.2401 125 -0.05 74
IV.CSP1.EHZ. 2020-10-31T13:14:24.38 1.0 undecidable manual P 265 0.1331 144 -0.26 24
IV.MF5.EHZ. 2020-10-31T13:14:24.62 0.1 undecidable manual P 155 0.1268 145 0.04 100
IV.SAP2.EHZ. 2020-10-31T13:14:23.77 0.1 negative manual P 127 0.0108 177 -0.14 100
IV.GUMA.HHE. 2020-10-31T13:14:23.82 0.1 undecidable manual P 223 0.0558 164 -0.22 98
IV.MNTP.HNZ. 2020-10-31T13:14:23.93 0.1 undecidable manual P 60 0.0692 160 -0.19 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHE. ML:1.7 0.00031958305 0.1024 AML other m 2020-10-31T13:14:27.05
IV.SAP2.EHN. ML:2.5 0.002172276 0.1024 AML other m 2020-10-31T13:14:26.85
IV.MNTP.HNE. ML:2 0.00073900645 0.096 AML other m 2020-10-31T13:14:27.75
IV.MNTP.HNN. ML:2.3 0.0013466245 0.16 AML other m 2020-10-31T13:14:27.38
IV.CSP1.EHE. ML:1.7 0.000271314285 0.0576 AML other m 2020-10-31T13:14:28.26
IV.CSP1.EHN. ML:1.8 0.00034962605 0.1408 AML other m 2020-10-31T13:14:28.25
IV.MF5.EHE. ML:1.9 0.0004955739 0.3392 AML other m 2020-10-31T13:14:28.79
IV.MF5.EHN. ML:1.8 0.00034405415 0.16 AML other m 2020-10-31T13:14:28.44
IV.FDMO.HHE. ML:1.8 0.0002842829 0.1408 AML other m 2020-10-31T13:14:30.26
IV.FDMO.HHN. ML:1.6 0.00018120935 0.1344 AML other m 2020-10-31T13:14:30.70
IV.EL6.EHE. ML:1.7 0.0001874356 0.1408 AML other m 2020-10-31T13:14:32.91
IV.EL6.EHN. ML:2 0.00031717385 0.1792 AML other m 2020-10-31T13:14:33.05
IV.MTRA.HNE. ML:1.6 0.00012852745 0.1216 AML other m 2020-10-31T13:14:34.49
IV.MTRA.HNN. ML:1.6 0.000109073835 0.1408 AML other m 2020-10-31T13:14:34.18
IV.MTRA.EHE. ML:1.6 0.00012446216 0.1024 AML other m 2020-10-31T13:14:34.44
IV.MTRA.EHN. ML:1.6 0.00010916393 0.1408 AML other m 2020-10-31T13:14:34.18
IV.NRCA.HNE. ML:2 0.00032433655 0.1408 AML other m 2020-10-31T13:14:33.24
IV.NRCA.HNN. ML:1.7 0.00015791625 0.128 AML other m 2020-10-31T13:14:33.18
IV.NRCA.HHE. ML:2 0.00035634005 0.1408 AML other m 2020-10-31T13:14:33.24
IV.SNTG.HHE. ML:1.7 0.000134791255 0.2752 AML other m 2020-10-31T13:14:34.17
IV.SNTG.HHN. ML:1.7 0.000137770075 0.1408 AML other m 2020-10-31T13:14:34.13
IV.SMA1.EHE. ML:1.1 2.986758E-5 0.224 AML other m 2020-10-31T13:14:40.11
IV.SMA1.EHN. ML:1.3 3.999539E-5 0.1408 AML other m 2020-10-31T13:14:39.12
IV.TERO.HHE. ML:1.5 6.952079E-5 0.1024 AML other m 2020-10-31T13:14:39.78
IV.TERO.HHN. ML:1.6 9.00353E-5 0.0768 AML other m 2020-10-31T13:14:39.75
IV.TERO.HNE. ML:1.6 8.198282E-5 0.1024 AML other m 2020-10-31T13:14:40.05
IV.TERO.HNN. ML:1.8 0.00013346803 0.7104 AML other m 2020-10-31T13:14:37.58
IV.ASSB.HHE. ML:1.6 8.5192795E-5 0.1216 AML other m 2020-10-31T13:14:40.01
IV.ASSB.HHN. ML:1.6 8.3840025E-5 0.16 AML other m 2020-10-31T13:14:39.66
IV.ATCC.EHE. ML:1.6 6.8296045E-5 0.2368 AML other m 2020-10-31T13:14:40.69
IV.ATCC.EHN. ML:1.6 7.1726155E-5 0.3392 AML other m 2020-10-31T13:14:40.46
IV.CAMP.HHE. ML:1.2 2.3056945E-5 0.2816 AML other m 2020-10-31T13:14:42.44
IV.CAMP.HHN. ML:1 2.16872395E-5 0.2816 AML other m 2020-10-31T13:14:40.75
IV.RM33.EHE. ML:1.1 1.7595245E-5 0.1408 AML other m 2020-10-31T13:14:44.89
IV.RM33.EHN. ML:1.1 1.7540475E-5 0.2432 AML other m 2020-10-31T13:14:46.35
IV.RM33.HNE. ML:1.9 0.000125856185 0.8512 AML other m 2020-10-31T13:14:42.45
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