Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 18-04-2021 and time 06:19:36 (Italy) in region 2 km E Sant'Angelo in Pontano (MC)

A magnitude ML 1.6 earthquake occured in region: 2 km E Sant'Angelo in Pontano (MC), on

  • 18-04-2021 04:19:36 (UTC)
  • 18-04-2021 06:19:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1060, 13.4260 at 22 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
Falerone FM 4 3337 4773
Montappone FM 5 1682 6455
Monte Vidon Corrado FM 5 731 7186
Penna San Giovanni MC 5 1108 8294
Servigliano FM 6 2336 10630
Ripe San Ginesio MC 6 852 11482
Massa Fermana FM 7 963 12445
Loro Piceno MC 7 2401 14846
Gualdo MC 8 815 15661
Monte San Martino MC 8 765 16426
Colmurano MC 9 1263 17689
San Ginesio MC 9 3498 21187
Belmonte Piceno FM 9 646 21833
Montegiorgio FM 10 6851 28684
Mogliano MC 10 4696 33380
Monteleone di Fermo FM 11 395 33775
Urbisaglia MC 11 2628 36403
Santa Vittoria in Matenano FM 11 1330 37733
Smerillo FM 11 365 38098
Monsampietro Morico FM 11 659 38757
Sarnano MC 13 3264 42021
Montelparo FM 13 778 42799
Montefalcone Appennino FM 13 424 43223
Camporotondo di Fiastrone MC 13 563 43786
Petriolo MC 13 1998 45784
Francavilla d'Ete FM 13 964 46748
Magliano di Tenna FM 14 1452 48200
Cessapalombo MC 14 512 48712
Montottone FM 14 979 49691
Grottazzolina FM 14 3398 53089
Amandola FM 15 3629 56718
Rapagnano FM 15 2145 58863
Monte Rinaldo FM 15 379 59242
Monte San Pietrangeli FM 16 2458 61700
Tolentino MC 16 20069 81769
Comunanza AP 16 3166 84935
Caldarola MC 17 1823 86758
Force AP 17 1354 88112
Belforte del Chienti MC 17 1886 89998
Monte Giberto FM 17 801 90799
Ortezzano FM 17 774 91573
Torre San Patrizio FM 17 2048 93621
Corridonia MC 17 15430 109051
Monte Vidon Combatte FM 18 433 109484
Ponzano di Fermo FM 19 1674 111158
Petritoli FM 19 2335 113493
Pollenza MC 19 6618 120111
Montefortino FM 19 1178 121289
Montalto delle Marche AP 20 2122 123411
Montedinove AP 20 488 123899
Rotella AP 20 906 124805

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km NW of Teramo (54892 inhabitants)
57 Km S of Ancona (100861 inhabitants)
61 Km E of Foligno (57155 inhabitants)
84 Km N of L'Aquila (69753 inhabitants)
84 Km E of Perugia (166134 inhabitants)
88 Km NE of Terni (111501 inhabitants)
88 Km NW of Montesilvano (53738 inhabitants)
88 Km SE of Fano (60888 inhabitants)
96 Km NW of Pescara (121014 inhabitants)
99 Km SE of Pesaro (94582 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 1.6 2021-04-18
04:19:36		 43.1057 13.4262 22 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90083431
Reviewed
Rev100 		ML 1.6 2021-04-18
04:19:36		 43.108 13.4217 22 2021-04-18
04:31:37		 Sala Sismica INGV-Roma 89201981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-18 04:19:36 ± 0.09
Latitude 43.1057 ± 0.0036
Longitude 13.4262 ± 0.0049
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90083431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 342
Semi-minor axis of confidence ellipse (meter) 166
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
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 45
Number of defining phases 45
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) 0.02158
Epicentral distance of station farthest from the epicenter (degree) 0.57916
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 90083431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-28 13:57:05

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 89201981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-18 04:31:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2021-04-18T04:19:57.05 0.3 undecidable manual S 278 64.2912 102 0.32 67
IV.ASSB.HHZ. 2021-04-18T04:19:56.53 0.3 undecidable manual S 264 62.5929 102 0.24 68
IV.AOI.HHE. 2021-04-18T04:19:53.53 0.3 undecidable manual S 16 51.3153 106 0.15 70
IV.SMA1.EHZ. 2021-04-18T04:19:53.53 0.3 undecidable manual S 188 53.2023 105 -0.34 67
IV.SNTG.HHE. 2021-04-18T04:19:51.16 0.6 undecidable manual S 293 42.624 110 -0.01 49
IV.CESI.HHZ. 2021-04-18T04:19:51.84 0.3 undecidable manual S 255 43.7229 109 0.4 68
IV.NRCA.HHZ. 2021-04-18T04:19:50.60 0.3 undecidable manual S 220 39.4272 111 0.24 71
IV.MML1.HNE. 2021-04-18T04:19:50.19 0.6 undecidable manual S 272 36.8298 113 0.47 45
IV.MTRA.EHE. 2021-04-18T04:19:50.04 0.6 undecidable manual S 184 38.7279 112 -0.17 48
IV.EL6.EHZ. 2021-04-18T04:19:49.74 0.3 undecidable manual S 314 36.1416 114 0.19 72
IV.FEMA.HNE. 2021-04-18T04:19:49.68 0.6 undecidable manual S 243 34.4433 115 0.54 44
IV.CING.HNZ. 2021-04-18T04:19:49.29 0.6 undecidable manual S 328 35.2425 114 -0.06 49
IV.ATCC.EHZ. 2021-04-18T04:19:48.38 0.3 undecidable manual P 278 64.2912 102 0.07 70
IV.MC2.EHZ. 2021-04-18T04:19:48.17 0.3 undecidable manual S 222 28.8489 120 0.34 70
IV.ASSB.HHZ. 2021-04-18T04:19:47.87 0.3 undecidable manual P 264 62.5929 102 -0.19 68
IV.FDMO.HHZ. 2021-04-18T04:19:47.91 0.3 undecidable manual S 255 28.5492 121 0.17 73
IV.AOI.HHE. 2021-04-18T04:19:46.37 0.1 undecidable manual P 16 51.3153 106 0 96
IV.SMA1.EHZ. 2021-04-18T04:19:46.39 0.3 undecidable manual P 188 53.2023 105 -0.27 68
IV.MMO1.EHZ. 2021-04-18T04:19:46.94 0.3 undecidable manual S 199 24.2535 126 0.15 73
IV.TERO.HHZ. 2021-04-18T04:19:46.64 0.3 undecidable manual P 165 55.5 104 -0.35 67
IV.CESI.HHZ. 2021-04-18T04:19:45.31 0.1 undecidable manual P 255 43.7229 109 0.05 97
IV.CSP1.EHZ. 2021-04-18T04:19:45.43 0.3 undecidable manual S 265 17.9709 135 -0.09 75
IV.SNTG.HHE. 2021-04-18T04:19:45.06 0.1 undecidable manual P 293 42.624 110 -0.04 97
IV.PF6.EHZ. 2021-04-18T04:19:45.55 0.3 undecidable manual S 281 19.0698 133 -0.18 74
IV.PP3.HNZ. 2021-04-18T04:19:44.19 0.3 undecidable manual P 26 33.6441 116 0.37 69
IV.MTRA.EHE. 2021-04-18T04:19:44.23 0.3 undecidable manual P 184 38.7279 112 -0.31 70
IV.MF5.EHZ. 2021-04-18T04:19:44.52 0.6 undecidable manual S 168 13.3755 145 -0.2 50
IV.NRCA.HHZ. 2021-04-18T04:19:44.56 0.1 positive manual P 220 39.4272 111 -0.07 97
IV.MNTT.EHZ. 2021-04-18T04:19:44.98 0.6 undecidable manual S 109 14.5743 142 0.07 50
IV.MML1.HNE. 2021-04-18T04:19:44.00 0.1 undecidable manual P 272 36.8298 113 -0.26 93
IV.MC2.EHZ. 2021-04-18T04:19:43.15 0.1 undecidable manual P 222 28.8489 120 -0.02 100
IV.SAP2.EHZ. 2021-04-18T04:19:43.60 0.3 undecidable manual S 246 2.3976 173 -0.04 79
IV.OFFI.HHZ. 2021-04-18T04:19:43.90 0.1 undecidable manual P 132 28.3494 121 0.81 79
IV.EL6.EHZ. 2021-04-18T04:19:43.97 0.3 undecidable manual P 314 36.1416 114 -0.2 71
IV.MNTP.HNZ. 2021-04-18T04:19:43.74 0.3 undecidable manual S 45 4.995 166 -0.03 78
IV.FEMA.HNE. 2021-04-18T04:19:43.74 0.1 undecidable manual P 243 34.4433 115 -0.19 95
IV.CING.HNZ. 2021-04-18T04:19:43.78 0.1 undecidable manual P 328 35.2425 114 -0.27 94
IV.FDMO.HHZ. 2021-04-18T04:19:42.97 0.1 undecidable manual P 255 28.5492 121 -0.15 97
IV.MMO1.EHZ. 2021-04-18T04:19:42.46 0.1 positive manual P 199 24.2535 126 -0.11 99
IV.MNTT.EHZ. 2021-04-18T04:19:41.68 0.3 undecidable manual P 109 14.5743 142 0.19 74
IV.CSP1.EHZ. 2021-04-18T04:19:41.71 0.1 undecidable manual P 265 17.9709 135 -0.13 100
IV.MF5.EHZ. 2021-04-18T04:19:41.48 0.3 undecidable manual P 168 13.3755 145 0.11 75
IV.PF6.EHZ. 2021-04-18T04:19:41.67 0.3 undecidable manual P 281 19.0698 133 -0.29 72
IV.MNTP.HNZ. 2021-04-18T04:19:40.63 0.3 undecidable manual P 45 4.995 166 -0.2 76
IV.SAP2.EHZ. 2021-04-18T04:19:40.63 0.3 undecidable manual P 246 2.3976 173 -0.12 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHE. ML:1.8 0.00043 0.18 AML other m 2021-04-18T04:19:44.12
IV.SAP2.EHN. ML:2.2 0.0012749999999999999 0.72 AML other m 2021-04-18T04:19:44.47
IV.CSP1.EHE. ML:1.7 0.0002985 0.2 AML other m 2021-04-18T04:19:45.85
IV.CSP1.EHN. ML:1.7 0.00026700000000000004 1.06 AML other m 2021-04-18T04:19:46.38
IV.MNTT.EHE. ML:2.1 0.000773 0.64 AML other m 2021-04-18T04:19:46.51
IV.MNTT.EHN. ML:1.9 0.0004555 0.16 AML other m 2021-04-18T04:19:47.63
IV.FDMO.HHN. ML:1.1 0.00005075 0.16 AML other m 2021-04-18T04:19:48.11
IV.FDMO.HHE. ML:1.3 0.00008795 1.22 AML other m 2021-04-18T04:19:48.18
IV.EL6.EHE. ML:1.6 0.00012185000000000001 0.22 AML other m 2021-04-18T04:19:50.02
IV.EL6.EHN. ML:1.6 0.00014250000000000002 0.18 AML other m 2021-04-18T04:19:50.25
IV.NRCA.HHN. ML:1.6 0.0001305 1.62 AML other m 2021-04-18T04:19:50.96
IV.NRCA.HHE. ML:1.7 0.00014900000000000002 1.04 AML other m 2021-04-18T04:19:51.92
IV.CESI.HHE. ML:1.2 0.0000391 0.44 AML other m 2021-04-18T04:19:52.61
IV.CESI.HHN. ML:1.5 0.0000775 1.06 AML other m 2021-04-18T04:19:52.68
IV.TERO.HHE. ML:1.0 0.000022199999999999998 1.06 AML other m 2021-04-18T04:19:56.94
IV.TERO.HHN. ML:1.2 0.000029449999999999998 0.76 AML other m 2021-04-18T04:19:57.76
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