Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 28-10-2020 and time 20:59:19 (UTC) in region 3 km SE Sant'Angelo in Pontano (MC)

A magnitude ML 1.5 earthquake occured in region: 3 km SE Sant'Angelo in Pontano (MC), on

  • 28-10-2020 20:59:19 (UTC)
  • 28-10-2020 21:59:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0870, 13.4220 at 23 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 3 1436 1436
Penna San Giovanni MC 3 1108 2544
Falerone FM 5 3337 5881
Servigliano FM 6 2336 8217
Monte San Martino MC 6 765 8982
Monte Vidon Corrado FM 6 731 9713
Montappone FM 7 1682 11395
Gualdo MC 7 815 12210
Ripe San Ginesio MC 8 852 13062
Massa Fermana FM 8 963 14025
San Ginesio MC 9 3498 17523
Loro Piceno MC 9 2401 19924
Smerillo FM 9 365 20289
Belmonte Piceno FM 10 646 20935
Santa Vittoria in Matenano FM 10 1330 22265
Monteleone di Fermo FM 10 395 22660
Colmurano MC 10 1263 23923
Montegiorgio FM 11 6851 30774
Monsampietro Morico FM 11 659 31433
Sarnano MC 11 3264 34697
Montefalcone Appennino FM 11 424 35121
Montelparo FM 12 778 35899
Mogliano MC 12 4696 40595
Urbisaglia MC 13 2628 43223
Amandola FM 13 3629 46852
Cessapalombo MC 14 512 47364
Montottone FM 14 979 48343
Camporotondo di Fiastrone MC 14 563 48906
Comunanza AP 14 3166 52072
Monte Rinaldo FM 15 379 52451
Magliano di Tenna FM 15 1452 53903
Force AP 15 1354 55257
Grottazzolina FM 15 3398 58655
Francavilla d'Ete FM 15 964 59619
Petriolo MC 15 1998 61617
Rapagnano FM 16 2145 63762
Ortezzano FM 16 774 64536
Caldarola MC 17 1823 66359
Monte Giberto FM 17 801 67160
Belforte del Chienti MC 17 1886 69046
Montefortino FM 17 1178 70224
Monte San Pietrangeli FM 17 2458 72682
Monte Vidon Combatte FM 18 433 73115
Tolentino MC 18 20069 93184
Rotella AP 19 906 94090
Torre San Patrizio FM 19 2048 96138
Montedinove AP 19 488 96626
Montalto delle Marche AP 19 2122 98748
Bolognola MC 19 142 98890
Petritoli FM 19 2335 101225
Ponzano di Fermo FM 19 1674 102899
Corridonia MC 19 15430 118329

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km NW of Teramo (54892 inhabitants)
60 Km S of Ancona (100861 inhabitants)
60 Km E of Foligno (57155 inhabitants)
82 Km N of L'Aquila (69753 inhabitants)
84 Km E of Perugia (166134 inhabitants)
86 Km NE of Terni (111501 inhabitants)
87 Km NW of Montesilvano (53738 inhabitants)
90 Km SE of Fano (60888 inhabitants)
95 Km NW of Pescara (121014 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2020-10-28
20:59:19		 43.0873 13.4225 23 2021-02-26
14:56:03		 Bollettino Sismico Italiano INGV 84503961
Reviewed
Rev100 		ML 1.6 2020-10-28
20:59:19		 43.0898 13.4193 25 2020-10-28
21:42:57		 Sala Sismica INGV-Roma 84220171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-28 20:59:19 ± 0.15
Latitude 43.0873 ± 0.0054
Longitude 13.4225 ± 0.0074
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84503961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 589
Semi-minor axis of confidence ellipse (meter) 446
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 162
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
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) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.46135
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 84503961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-11 16:31:43

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 84220171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 21:42:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2020-10-28T20:59:34.47 0.6 undecidable manual S 296 43.2234 111 0.35 44
IV.EL6.EHZ. 2020-10-28T20:59:33.13 0.6 undecidable manual S 316 37.3293 115 0.46 43
IV.NRCA.HHZ. 2020-10-28T20:59:33.01 0.3 undecidable manual S 222 37.629 114 0.25 68
IV.FDMO.HHZ. 2020-10-28T20:59:30.50 0.6 undecidable manual S 258 27.75 123 0.07 48
IV.MC2.EHZ. 2020-10-28T20:59:30.78 0.6 undecidable manual S 224 27.1506 124 0.47 44
IV.MMO1.EHZ. 2020-10-28T20:59:29.18 0.3 undecidable manual S 200 22.2555 130 -0.07 73
IV.PF6.EHN. 2020-10-28T20:59:28.46 0.3 undecidable manual S 287 19.2696 135 -0.21 72
IV.SNTG.HHZ. 2020-10-28T20:59:28.17 0.3 undecidable manual P 296 43.2234 111 0.22 68
IV.CSP1.EHZ. 2020-10-28T20:59:28.30 0.6 undecidable manual S 272 17.6712 138 -0.07 50
IV.SMA1.EHZ. 2020-10-28T20:59:28.74 0.3 undecidable manual P 188 51.2154 107 -0.37 65
IV.MNTT.EHZ. 2020-10-28T20:59:28.51 0.3 undecidable manual S 101 14.2746 144 0.7 64
IV.MF5.EHZ. 2020-10-28T20:59:27.69 0.6 undecidable manual S 165 11.4774 150 0.3 47
IV.NRCA.HHZ. 2020-10-28T20:59:27.07 0.3 undecidable manual P 222 37.629 114 -0.09 71
IV.EL6.EHZ. 2020-10-28T20:59:27.02 0.3 undecidable manual P 316 37.3293 115 -0.09 71
IV.MNTP.HNZ. 2020-10-28T20:59:26.84 0.3 undecidable manual S 34 6.6933 162 -0.03 75
IV.SAP2.EHZ. 2020-10-28T20:59:26.43 0.1 undecidable manual S 299 2.1978 174 -0.19 98
IV.GUMA.HHZ. 2020-10-28T20:59:26.95 0.3 undecidable manual S 249 7.5813 160 0 75
IV.MC2.EHZ. 2020-10-28T20:59:25.77 0.1 undecidable manual P 224 27.1506 124 0.02 97
IV.FDMO.HHZ. 2020-10-28T20:59:25.64 0.1 undecidable manual P 258 27.75 123 -0.18 95
IV.PF6.EHN. 2020-10-28T20:59:25.34 0.3 undecidable manual P 287 19.2696 135 0.54 66
IV.CSP1.EHZ. 2020-10-28T20:59:24.46 0.1 undecidable manual P 272 17.6712 138 -0.17 96
IV.MMO1.EHZ. 2020-10-28T20:59:24.94 0.1 undecidable manual P 200 22.2555 130 -0.2 95
IV.MF5.EHZ. 2020-10-28T20:59:24.10 0.1 positive manual P 165 11.4774 150 0.04 100
IV.MNTT.EHZ. 2020-10-28T20:59:24.42 0.3 undecidable manual P 101 14.2746 144 0.12 74
IV.MNTP.HNZ. 2020-10-28T20:59:23.57 0.1 undecidable manual P 34 6.6933 162 -0.2 97
IV.SAP2.EHZ. 2020-10-28T20:59:23.29 0.1 undecidable manual P 299 2.1978 174 -0.33 95
IV.GUMA.HHZ. 2020-10-28T20:59:23.69 0.1 undecidable manual P 249 7.5813 160 -0.13 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHN. ML:2.2 0.001051132 0.1536 AML other m 2020-10-28T20:59:26.85
IV.SAP2.EHE. ML:1.6 0.00031571725 0.2048 AML other m 2020-10-28T20:59:26.96
IV.GUMA.HHN. ML:1.7 0.00034940119999999996 0.192 AML other m 2020-10-28T20:59:27.09
IV.GUMA.HHE. ML:1.6 0.0002610169 0.3712 AML other m 2020-10-28T20:59:27.19
IV.MF5.EHN. ML:1.4 0.00015513965 0.256 AML other m 2020-10-28T20:59:27.76
IV.GUMA.HNE. ML:1.5 0.00020315830000000002 0.3072 AML other m 2020-10-28T20:59:27.77
IV.MF5.EHE. ML:1.6 0.00024669695 0.256 AML other m 2020-10-28T20:59:27.96
IV.CSP1.EHE. ML:1.8 0.000314311 0.1536 AML other m 2020-10-28T20:59:28.57
IV.CSP1.EHN. ML:1.6 0.000191922905 0.0768 AML other m 2020-10-28T20:59:28.55
IV.MNTT.EHN. ML:1.7 0.00030949725 0.32 AML other m 2020-10-28T20:59:28.61
IV.MNTT.EHE. ML:1.5 0.00017818804999999999 1.7568 AML other m 2020-10-28T20:59:29.03
IV.FDMO.HHE. ML:1.2 0.000059343524999999994 0.2176 AML other m 2020-10-28T20:59:30.73
IV.FDMO.HHN. ML:0.8 0.000027396014999999998 0.128 AML other m 2020-10-28T20:59:30.91
IV.NRCA.HHN. ML:1.4 0.00006978695 0.1024 AML other m 2020-10-28T20:59:33.25
IV.NRCA.HHE. ML:1.4 0.00007447073 0.1152 AML other m 2020-10-28T20:59:33.25
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download