Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-02-2021 and time 11:20:21 (UTC) in region 4 km NE Sant'Angelo in Pontano (MC)

A magnitude ML 1.7 earthquake occured in region: 4 km NE Sant'Angelo in Pontano (MC), on

  • 17-02-2021 11:20:21 (UTC)
  • 17-02-2021 12:20:21 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1280, 13.4160 at 25 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 4 1436 1436
Ripe San Ginesio MC 4 852 2288
Loro Piceno MC 4 2401 4689
Montappone FM 5 1682 6371
Falerone FM 5 3337 9708
Massa Fermana FM 6 963 10671
Monte Vidon Corrado FM 6 731 11402
Colmurano MC 6 1263 12665
Penna San Giovanni MC 8 1108 13773
Servigliano FM 8 2336 16109
San Ginesio MC 8 3498 19607
Urbisaglia MC 8 2628 22235
Mogliano MC 8 4696 26931
Gualdo MC 9 815 27746
Montegiorgio FM 10 6851 34597
Monte San Martino MC 11 765 35362
Belmonte Piceno FM 11 646 36008
Petriolo MC 11 1998 38006
Camporotondo di Fiastrone MC 12 563 38569
Francavilla d'Ete FM 12 964 39533
Cessapalombo MC 13 512 40045
Monteleone di Fermo FM 13 395 40440
Monsampietro Morico FM 13 659 41099
Santa Vittoria in Matenano FM 14 1330 42429
Sarnano MC 14 3264 45693
Tolentino MC 14 20069 65762
Smerillo FM 14 365 66127
Magliano di Tenna FM 14 1452 67579
Belforte del Chienti MC 15 1886 69465
Rapagnano FM 15 2145 71610
Monte San Pietrangeli FM 15 2458 74068
Grottazzolina FM 15 3398 77466
Caldarola MC 15 1823 79289
Corridonia MC 15 15430 94719
Montottone FM 16 979 95698
Montelparo FM 16 778 96476
Montefalcone Appennino FM 16 424 96900
Pollenza MC 17 6618 103518
Torre San Patrizio FM 17 2048 105566
Amandola FM 17 3629 109195
Monte Rinaldo FM 17 379 109574
Monte Giberto FM 18 801 110375
Monte San Giusto MC 19 8191 118566
Comunanza AP 19 3166 121732
Ortezzano FM 19 774 122506
Serrapetrona MC 19 966 123472
Force AP 19 1354 124826
Macerata MC 20 42473 167299
Monte Vidon Combatte FM 20 433 167732

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km S of Ancona (100861 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
61 Km E of Foligno (57155 inhabitants)
83 Km E of Perugia (166134 inhabitants)
86 Km SE of Fano (60888 inhabitants)
86 Km N of L'Aquila (69753 inhabitants)
89 Km NE of Terni (111501 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
96 Km SE of Pesaro (94582 inhabitants)
98 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 2021-02-17
11:20:21		 43.1285 13.4155 25 2021-07-12
16:55:00		 Bollettino Sismico Italiano INGV 87602601
Reviewed
Rev100 		ML 1.7 2021-02-17
11:20:20		 43.137 13.4248 26 2021-02-17
11:29:01		 Sala Sismica INGV-Roma 87237331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 11:20:21 ± 0.16
Latitude 43.1285 ± 0.0063
Longitude 13.4155 ± 0.0099
Depth (km) 25 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87602601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 788
Semi-minor axis of confidence ellipse (meter) 565
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.44247
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 87602601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-09 13:26:45

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 87237331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-17 11:29:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2021-02-17T11:20:36.82 0.3 undecidable manual S 252 43.623 114 0.73 61
IV.SNTG.HHE. 2021-02-17T11:20:35.95 0.3 undecidable manual S 290 40.9257 115 0.52 65
IV.NRCA.HHZ. 2021-02-17T11:20:35.61 0.3 undecidable manual S 217 40.8258 115 0.2 71
IV.CING.HNZ. 2021-02-17T11:20:33.42 0.6 undecidable manual S 327 32.6451 122 -0.07 49
IV.MC2.EHZ. 2021-02-17T11:20:33.34 0.3 undecidable manual S 217 30.2475 124 0.38 70
IV.EL6.EHZ. 2021-02-17T11:20:33.94 0.6 undecidable manual S 311 33.744 121 0.2 47
IV.MMO1.EHN. 2021-02-17T11:20:32.06 0.3 undecidable manual S 196 26.4513 128 -0.07 73
IV.FDMO.HHZ. 2021-02-17T11:20:32.66 0.3 undecidable manual S 249 28.4493 126 0.1 74
IV.MNTT.EHZ. 2021-02-17T11:20:30.97 0.3 undecidable manual S 117 16.3725 143 0.73 62
IV.CSP1.EHZ. 2021-02-17T11:20:30.43 0.6 undecidable manual S 257 17.5713 141 0 51
IV.MF5.EHZ. 2021-02-17T11:20:30.33 0.6 undecidable manual S 167 15.9729 144 0.14 50
IV.AOI.HHE. 2021-02-17T11:20:30.97 0.3 undecidable manual P 18 49.1175 111 0.4 66
IV.CESI.HHZ. 2021-02-17T11:20:29.69 0.3 undecidable manual P 252 43.623 114 -0.09 71
IV.SNTG.HHE. 2021-02-17T11:20:29.34 0.1 undecidable manual P 290 40.9257 115 -0.06 96
IV.GUMA.HHZ. 2021-02-17T11:20:29.34 0.3 undecidable manual S 222 9.7791 156 -0.02 77
IV.NRCA.HHZ. 2021-02-17T11:20:29.18 0.1 undecidable manual P 217 40.8258 115 -0.21 92
IV.SAP2.EHZ. 2021-02-17T11:20:28.83 0.3 undecidable manual S 201 3.7962 171 -0.07 77
IV.OFFI.HHE. 2021-02-17T11:20:28.76 0.3 undecidable manual P 134 30.6471 124 0.74 61
IV.MNTP.HNZ. 2021-02-17T11:20:28.70 0.3 undecidable manual S 77 4.4955 169 -0.23 75
IV.EL6.EHZ. 2021-02-17T11:20:28.37 0.3 undecidable manual P 311 33.744 121 -0.06 74
IV.FDMO.HHZ. 2021-02-17T11:20:27.54 0.1 undecidable manual P 249 28.4493 126 -0.21 95
IV.MC2.EHZ. 2021-02-17T11:20:27.83 0.3 undecidable manual P 217 30.2475 124 -0.15 72
IV.CING.HNZ. 2021-02-17T11:20:27.99 0.6 undecidable manual P 327 32.6451 122 -0.3 47
IV.MMO1.EHN. 2021-02-17T11:20:27.14 0.3 undecidable manual P 196 26.4513 128 -0.35 69
IV.MF5.EHZ. 2021-02-17T11:20:26.30 0.1 undecidable manual P 167 15.9729 144 -0.07 100
IV.CSP1.EHZ. 2021-02-17T11:20:26.26 0.1 undecidable manual P 257 17.5713 141 -0.26 96
IV.MNTT.EHZ. 2021-02-17T11:20:26.43 0.3 undecidable manual P 117 16.3725 143 0.02 76
IV.MNTP.HNZ. 2021-02-17T11:20:25.31 0.1 undecidable manual P 77 4.4955 169 -0.34 97
IV.SAP2.EHZ. 2021-02-17T11:20:25.33 0.3 undecidable manual P 201 3.7962 171 -0.3 73
IV.GUMA.HHZ. 2021-02-17T11:20:25.63 0.3 undecidable manual P 222 9.7791 156 -0.27 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHN. ML:2.4 0.001405 0.62 AML other m 2021-02-17T11:20:29.50
IV.MF5.EHE. ML:1.8 0.000314 0.28 AML other m 2021-02-17T11:20:30.60
IV.MF5.EHN. ML:1.6 0.00020750000000000003 0.46 AML other m 2021-02-17T11:20:30.51
IV.SAP2.EHE. ML:1.9 0.0004755 0.26 AML other m 2021-02-17T11:20:32.40
IV.MNTT.EHN. ML:1.8 0.0002935 0.2 AML other m 2021-02-17T11:20:32.55
IV.GUMA.HHE. ML:1.9 0.00045299999999999995 0.54 AML other m 2021-02-17T11:20:32.52
IV.GUMA.HHN. ML:2.1 0.0008449999999999999 0.24 AML other m 2021-02-17T11:20:32.68
IV.FDMO.HHE. ML:1.3 0.00007944999999999999 0.12 AML other m 2021-02-17T11:20:32.97
IV.FDMO.HHN. ML:1.1 0.0000523 1.92 AML other m 2021-02-17T11:20:32.01
IV.MNTT.EHE. ML:2.1 0.0006160000000000001 0.14 AML other m 2021-02-17T11:20:33.93
IV.CSP1.EHE. ML:1.7 0.000223 1.26 AML other m 2021-02-17T11:20:33.29
IV.CSP1.EHN. ML:1.6 0.00021218330000000003 1.0176 AML other m 2021-02-17T11:20:34.12
IV.NRCA.HHN. ML:1.6 0.00011344999999999999 0.16 AML other m 2021-02-17T11:20:35.79
IV.NRCA.HHE. ML:1.8 0.00015945865 0.5216 AML other m 2021-02-17T11:20:36.06
IV.CESI.HHN. ML:1.0 0.000029299640000000003 0.7232 AML other m 2021-02-17T11:20:37.22
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