Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 18-12-2020 and time 22:08:57 (Italy) in region 3 km SE Ripe San Ginesio (MC)

A magnitude ML 1.7 earthquake occured in region: 3 km SE Ripe San Ginesio (MC), on

  • 18-12-2020 21:08:57 (UTC)
  • 18-12-2020 22:08:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1280, 13.3970 at 19 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
Ripe San Ginesio MC 3 852 852
Sant'Angelo in Pontano MC 3 1436 2288
Loro Piceno MC 5 2401 4689
Colmurano MC 5 1263 5952
Montappone FM 6 1682 7634
Falerone FM 7 3337 10971
San Ginesio MC 7 3498 14469
Massa Fermana FM 7 963 15432
Monte Vidon Corrado FM 7 731 16163
Urbisaglia MC 8 2628 18791
Gualdo MC 8 815 19606
Penna San Giovanni MC 8 1108 20714
Servigliano FM 9 2336 23050
Mogliano MC 10 4696 27746
Camporotondo di Fiastrone MC 11 563 28309
Monte San Martino MC 11 765 29074
Cessapalombo MC 11 512 29586
Montegiorgio FM 12 6851 36437
Petriolo MC 12 1998 38435
Belmonte Piceno FM 12 646 39081
Sarnano MC 13 3264 42345
Tolentino MC 13 20069 62414
Belforte del Chienti MC 14 1886 64300
Francavilla d'Ete FM 14 964 65264
Caldarola MC 14 1823 67087
Monteleone di Fermo FM 14 395 67482
Smerillo FM 14 365 67847
Santa Vittoria in Matenano FM 14 1330 69177
Monsampietro Morico FM 15 659 69836
Magliano di Tenna FM 16 1452 71288
Pollenza MC 16 6618 77906
Montefalcone Appennino FM 16 424 78330
Corridonia MC 16 15430 93760
Rapagnano FM 16 2145 95905
Montelparo FM 17 778 96683
Amandola FM 17 3629 100312
Monte San Pietrangeli FM 17 2458 102770
Grottazzolina FM 17 3398 106168
Montottone FM 17 979 107147
Serrapetrona MC 18 966 108113
Torre San Patrizio FM 18 2048 110161
Monte Rinaldo FM 19 379 110540
Comunanza AP 19 3166 113706
Monte Giberto FM 20 801 114507
Force AP 20 1354 115861
Macerata MC 20 42473 158334

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km S of Ancona (100861 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
59 Km E of Foligno (57155 inhabitants)
82 Km E of Perugia (166134 inhabitants)
85 Km SE of Fano (60888 inhabitants)
86 Km N of L'Aquila (69753 inhabitants)
88 Km NE of Terni (111501 inhabitants)
92 Km NW of Montesilvano (53738 inhabitants)
95 Km SE of Pesaro (94582 inhabitants)
99 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 1.7 2020-12-18
21:08:57		 43.1278 13.3967 19 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 86902121
Reviewed
Rev100 		ML 1.8 2020-12-18
21:08:57		 43.1337 13.4053 20 2020-12-18
21:15:31		 Sala Sismica INGV-Roma 85528531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-18 21:08:57 ± 0.1
Latitude 43.1278 ± 0.0036
Longitude 13.3967 ± 0.0062
Depth (km) 19 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86902121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 450
Semi-minor axis of confidence ellipse (meter) 59
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 59
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.93979
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 48
Type of magnitude ML
Reference to an origin 85528531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-18 21:15:31

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 48
Type of magnitude ML
Reference to an origin 86902121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-24 11:59:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2020-12-18T21:09:21.15 0.6 undecidable manual S 282 72.0723 97 1.62 24
IV.LNSS.HHZ. 2020-12-18T21:09:18.75 0.6 undecidable manual S 207 65.0904 98 1.08 33
IV.CAMP.HHZ. 2020-12-18T21:09:18.75 0.6 undecidable manual S 179 65.6898 98 0.92 35
IV.ASSB.HHZ. 2020-12-18T21:09:17.17 0.6 undecidable manual S 261 60.495 99 0.7 39
IV.FOSV.EHZ. 2020-12-18T21:09:15.75 0.6 undecidable manual S 290 54.6009 100 0.83 37
IV.SMA1.EHZ. 2020-12-18T21:09:15.55 0.6 undecidable manual S 185 55.4001 100 0.42 43
IV.T0110.HHZ. 2020-12-18T21:09:15.21 0.6 undecidable manual P 163 104.3178 95 -0.04 43
IV.AOI.HHE. 2020-12-18T21:09:14.08 0.3 undecidable manual S 19 49.7169 102 0.44 63
IV.NARO.HHZ. 2020-12-18T21:09:12.33 0.6 undecidable manual P 309 84.8484 96 0.07 44
IV.VCEL.EHZ. 2020-12-18T21:09:12.99 0.6 undecidable manual P 156 89.0442 96 0.1 43
IV.CESI.HHZ. 2020-12-18T21:09:12.03 0.3 undecidable manual S 251 42.1245 105 0.36 67
IV.MTRA.EHZ. 2020-12-18T21:09:11.67 0.3 undecidable manual S 180 41.1255 105 0.25 68
IV.SNTG.HHZ. 2020-12-18T21:09:11.36 0.3 undecidable manual S 291 39.5271 106 0.37 67
IV.NRCA.HHZ. 2020-12-18T21:09:11.44 0.3 undecidable manual S 215 39.9267 106 0.35 68
IV.MOMA.HHZ. 2020-12-18T21:09:11.13 0.6 undecidable manual P 242 76.0683 97 0.22 43
IV.MPAG.EHZ. 2020-12-18T21:09:10.80 1.0 undecidable manual P 317 75.6687 97 -0.06 22
IV.MURB.HHZ. 2020-12-18T21:09:10.54 0.3 undecidable manual P 282 72.0723 97 0.24 65
IV.CING.HNE. 2020-12-18T21:09:09.01 0.1 undecidable manual S 329 31.9458 111 -0.06 97
IV.CIMA.HNE. 2020-12-18T21:09:09.97 0.6 undecidable manual S 48 29.6481 113 1.48 26
IV.EL6.EHZ. 2020-12-18T21:09:09.56 0.3 undecidable manual S 313 32.6451 110 0.31 69
IV.LNSS.HHZ. 2020-12-18T21:09:08.92 0.3 undecidable manual P 207 65.0904 98 -0.3 65
IV.SSFR.HHZ. 2020-12-18T21:09:08.43 0.3 undecidable manual P 305 60.2952 99 -0.07 69
IV.ATCC.EHZ. 2020-12-18T21:09:08.69 0.3 undecidable manual P 276 61.5939 99 -0.01 69
IV.ASSB.HHZ. 2020-12-18T21:09:08.57 0.3 undecidable manual P 261 60.495 99 0.03 69
IV.CAMP.HHZ. 2020-12-18T21:09:08.97 0.1 undecidable manual P 179 65.6898 98 -0.35 86
IV.FDMO.HHZ. 2020-12-18T21:09:08.00 0.3 undecidable manual S 248 27.0507 115 0.14 73
IV.SMA1.EHZ. 2020-12-18T21:09:07.25 0.3 undecidable manual P 185 55.4001 100 -0.51 63
IV.FOSV.EHZ. 2020-12-18T21:09:07.53 0.3 undecidable manual P 290 54.6009 100 -0.11 69
IV.TERO.HHZ. 2020-12-18T21:09:07.95 0.3 undecidable manual P 163 58.497 100 -0.28 66
IV.MMO1.EHZ. 2020-12-18T21:09:07.69 0.3 undecidable manual S 193 25.9518 117 0.08 73
IV.ARVD.HHZ. 2020-12-18T21:09:07.57 0.3 undecidable manual P 318 55.1004 100 -0.14 68
IV.AOI.HHE. 2020-12-18T21:09:06.22 0.6 undecidable manual P 19 49.7169 102 -0.68 41
IV.MNTT.EHZ. 2020-12-18T21:09:06.48 0.3 undecidable manual S 114 17.6712 129 0.73 60
IV.SSM1.HNE. 2020-12-18T21:09:06.43 0.6 undecidable manual S 302 20.9679 123 -0.03 49
IV.CESI.HHZ. 2020-12-18T21:09:05.69 0.1 undecidable manual P 251 42.1245 105 -0.08 94
IV.NRCA.HHZ. 2020-12-18T21:09:05.13 0.1 undecidable manual P 215 39.9267 106 -0.29 90
IV.CSP1.EHZ. 2020-12-18T21:09:05.37 0.3 undecidable manual S 256 16.0728 133 -0.05 74
IV.MTRA.EHZ. 2020-12-18T21:09:05.15 0.1 undecidable manual P 180 41.1255 105 -0.47 87
IV.MF5.EHZ. 2020-12-18T21:09:05.79 0.3 undecidable manual S 162 16.3725 132 0.31 70
IV.SNTG.HHZ. 2020-12-18T21:09:05.16 0.3 undecidable manual P 291 39.5271 106 -0.21 69
IV.PF6.EHZ. 2020-12-18T21:09:05.24 0.1 undecidable manual S 274 16.3725 132 -0.25 94
IV.PP3.HNN. 2020-12-18T21:09:04.33 0.3 undecidable manual P 32 32.6451 110 -0.04 73
IV.CIMA.HNE. 2020-12-18T21:09:04.04 0.3 undecidable manual P 48 29.6481 113 0.11 71
IV.GUMA.HHZ. 2020-12-18T21:09:04.33 0.3 undecidable manual S 215 8.7801 151 0.12 75
IV.EL6.EHZ. 2020-12-18T21:09:04.14 0.3 undecidable manual P 313 32.6451 110 -0.23 70
IV.OFFI.HHZ. 2020-12-18T21:09:04.82 0.1 undecidable manual P 132 31.746 111 0.59 83
IV.SAP2.EHZ. 2020-12-18T21:09:03.48 0.3 undecidable manual S 177 3.4965 168 -0.23 73
IV.MMO1.EHZ. 2020-12-18T21:09:03.08 0.1 undecidable manual P 193 25.9518 117 -0.34 92
IV.FDMO.HHZ. 2020-12-18T21:09:03.27 0.1 undecidable manual P 248 27.0507 115 -0.29 92
IV.CING.HNE. 2020-12-18T21:09:03.87 0.1 undecidable manual P 329 31.9458 111 -0.4 90
IV.MNTP.HNZ. 2020-12-18T21:09:03.68 0.3 undecidable manual S 80 5.994 160 -0.21 74
IV.MF5.EHZ. 2020-12-18T21:09:02.15 0.1 positive manual P 162 16.3725 132 -0.04 100
IV.MNTT.EHZ. 2020-12-18T21:09:02.35 0.1 positive manual P 114 17.6712 129 0.01 99
IV.SSM1.HNE. 2020-12-18T21:09:02.79 0.3 undecidable manual P 302 20.9679 123 0.03 74
IV.GUMA.HHZ. 2020-12-18T21:09:01.29 0.1 undecidable manual P 215 8.7801 151 -0.16 98
IV.PF6.EHZ. 2020-12-18T21:09:01.84 0.1 undecidable manual P 274 16.3725 132 -0.35 93
IV.CSP1.EHZ. 2020-12-18T21:09:01.95 0.1 undecidable manual P 256 16.0728 133 -0.2 96
IV.MNTP.HNZ. 2020-12-18T21:09:00.82 0.1 undecidable manual P 80 5.994 160 -0.45 94
IV.SAP2.EHZ. 2020-12-18T21:09:00.85 0.1 undecidable manual P 177 3.4965 168 -0.31 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHE. ML:1.9 0.0007405 1.7 AML other m 2020-12-18T21:09:04.05
IV.SAP2.EHN. ML:2.4 0.0023650000000000003 0.46 AML other m 2020-12-18T21:09:04.33
IV.GUMA.HHN. ML:2.2 0.0014100000000000002 0.2 AML other m 2020-12-18T21:09:04.41
IV.GUMA.HHE. ML:1.9 0.000717 0.98 AML other m 2020-12-18T21:09:04.43
IV.CSP1.EHN. ML:1.9 0.0004965000000000001 0.52 AML other m 2020-12-18T21:09:05.78
IV.MF5.EHN. ML:2.1 0.0008345000000000001 1.74 AML other m 2020-12-18T21:09:06.07
IV.CSP1.EHE. ML:1.8 0.000389 0.14 AML other m 2020-12-18T21:09:06.06
IV.MF5.EHE. ML:2.3 0.001245 0.3 AML other m 2020-12-18T21:09:06.03
IV.MNTT.EHN. ML:1.8 0.0004075 0.66 AML other m 2020-12-18T21:09:06.65
IV.FDMO.HHE. ML:1.8 0.000284 0.22 AML other m 2020-12-18T21:09:08.22
IV.FDMO.HHN. ML:1.7 0.000219 0.12 AML other m 2020-12-18T21:09:08.20
IV.EL6.EHN. ML:1.6 0.000141 0.16 AML other m 2020-12-18T21:09:10.59
IV.EL6.EHE. ML:1.6 0.0001485 1.54 AML other m 2020-12-18T21:09:10.18
IV.SNTG.HHN. ML:1.9 0.00023299999999999997 0.16 AML other m 2020-12-18T21:09:11.91
IV.SNTG.HHE. ML:1.7 0.000174 1.84 AML other m 2020-12-18T21:09:12.95
IV.NRCA.HHE. ML:2.2 0.0005385 0.12 AML other m 2020-12-18T21:09:12.16
IV.MNTT.EHE. ML:1.7 0.00028649999999999997 0.34 AML other m 2020-12-18T21:09:12.39
IV.MTRA.EHE. ML:1.9 0.000248 0.46 AML other m 2020-12-18T21:09:12.41
IV.MTRA.EHN. ML:1.7 0.0001375 1.34 AML other m 2020-12-18T21:09:12.04
IV.CESI.HHE. ML:1.5 0.0000929 0.22 AML other m 2020-12-18T21:09:12.86
IV.NRCA.HHN. ML:2.0 0.000328 0.12 AML other m 2020-12-18T21:09:12.93
IV.CESI.HHN. ML:1.7 0.000151 0.88 AML other m 2020-12-18T21:09:13.23
IV.OFFI.HHN. ML:2.1 0.000497 0.5 AML other m 2020-12-18T21:09:13.85
IV.OFFI.HHE. ML:2.1 0.0004665 0.62 AML other m 2020-12-18T21:09:13.62
IV.FOSV.EHE. ML:1.4 0.00006135 1.7 AML other m 2020-12-18T21:09:15.95
IV.FOSV.EHN. ML:1.5 0.00006355 0.26 AML other m 2020-12-18T21:09:16.81
IV.TERO.HHE. ML:1.8 0.00011295 0.18 AML other m 2020-12-18T21:09:17.96
IV.TERO.HHN. ML:1.9 0.000152 1.3 AML other m 2020-12-18T21:09:18.03
IV.SSFR.HHN. ML:1.8 0.00011729999999999999 0.16 AML other m 2020-12-18T21:09:18.28
IV.SSFR.HHE. ML:1.7 0.00009775 0.18 AML other m 2020-12-18T21:09:18.39
IV.ASSB.HHE. ML:1.6 0.00008405 0.8 AML other m 2020-12-18T21:09:18.10
IV.ASSB.HHN. ML:1.7 0.00009615 0.12 AML other m 2020-12-18T21:09:19.16
IV.ATCC.EHE. ML:1.5 0.00005885 0.56 AML other m 2020-12-18T21:09:19.50
IV.CAMP.HHN. ML:1.4 0.00003805 0.54 AML other m 2020-12-18T21:09:19.56
IV.ATCC.EHN. ML:1.5 0.00006565 0.96 AML other m 2020-12-18T21:09:19.32
IV.CAMP.HHE. ML:1.3 0.0000352 0.42 AML other m 2020-12-18T21:09:19.26
IV.LNSS.HHN. ML:1.7 0.00009029999999999999 0.44 AML other m 2020-12-18T21:09:19.48
IV.LNSS.HHE. ML:1.8 0.0001142 0.16 AML other m 2020-12-18T21:09:19.56
IV.MURB.HHN. ML:1.8 0.0001055 0.24 AML other m 2020-12-18T21:09:21.73
IV.MURB.HHE. ML:1.9 0.000135 0.26 AML other m 2020-12-18T21:09:21.74
IV.MOMA.HHN. ML:1.7 0.00007384999999999999 0.2 AML other m 2020-12-18T21:09:23.34
IV.MOMA.HHE. ML:1.5 0.000047600000000000005 0.2 AML other m 2020-12-18T21:09:23.32
IV.MPAG.EHN. ML:1.4 0.000034450000000000004 0.36 AML other m 2020-12-18T21:09:23.64
IV.MPAG.EHE. ML:1.1 0.0000207 1.5 AML other m 2020-12-18T21:09:25.88
IV.NARO.HHE. ML:1.4 0.0000294 0.48 AML other m 2020-12-18T21:09:25.48
IV.NARO.HHN. ML:1.3 0.0000247 0.2 AML other m 2020-12-18T21:09:25.56
IV.VCEL.EHE. ML:1.9 0.00008295 0.22 AML other m 2020-12-18T21:09:28.06
IV.VCEL.EHN. ML:1.8 0.0000703 0.84 AML other m 2020-12-18T21:09:30.98
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