Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 21-01-2017 and time 19:10:46 (Italy) in region 3 km NW Sant'Angelo in Pontano (MC)

A magnitude ML 2.1 earthquake occured in region: 3 km NW Sant'Angelo in Pontano (MC), on

  • 21-01-2017 18:10:46 (UTC)
  • 21-01-2017 19:10:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1160, 13.3740 at 24 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
Ripe San Ginesio MC 3 852 2288
San Ginesio MC 5 3498 5786
Colmurano MC 6 1263 7049
Gualdo MC 6 815 7864
Loro Piceno MC 7 2401 10265
Penna San Giovanni MC 8 1108 11373
Montappone FM 8 1682 13055
Falerone FM 8 3337 16392
Camporotondo di Fiastrone MC 9 563 16955
Urbisaglia MC 9 2628 19583
Monte Vidon Corrado FM 9 731 20314
Massa Fermana FM 9 963 21277
Cessapalombo MC 9 512 21789
Servigliano FM 10 2336 24125
Sarnano MC 11 3264 27389
Monte San Martino MC 11 765 28154
Mogliano MC 12 4696 32850
Caldarola MC 12 1823 34673
Belforte del Chienti MC 12 1886 36559
Tolentino MC 13 20069 56628
Montegiorgio FM 14 6851 63479
Smerillo FM 14 365 63844
Belmonte Piceno FM 14 646 64490
Petriolo MC 14 1998 66488
Santa Vittoria in Matenano FM 15 1330 67818
Monteleone di Fermo FM 15 395 68213
Amandola FM 15 3629 71842
Monsampietro Morico FM 16 659 72501
Francavilla d'Ete FM 16 964 73465
Montefalcone Appennino FM 16 424 73889
Serrapetrona MC 16 966 74855
Montelparo FM 17 778 75633
Pollenza MC 17 6618 82251
Magliano di Tenna FM 18 1452 83703
Comunanza AP 18 3166 86869
Bolognola MC 18 142 87011
Montottone FM 18 979 87990
Corridonia MC 18 15430 103420
Rapagnano FM 19 2145 105565
Grottazzolina FM 19 3398 108963
Acquacanina MC 19 121 109084
Monte San Pietrangeli FM 19 2458 111542
Montefortino FM 19 1178 112720
Force AP 20 1354 114074
Monte Rinaldo FM 20 379 114453
Fiastra MC 20 559 115012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
57 Km S of Ancona (100861 inhabitants)
57 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
80 Km E of Perugia (166134 inhabitants)
85 Km N of L'Aquila (69753 inhabitants)
86 Km NE of Terni (111501 inhabitants)
86 Km SE of Fano (60888 inhabitants)
92 Km NW of Montesilvano (53738 inhabitants)
96 Km SE of Pesaro (94582 inhabitants)
100 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 2.1 2017-01-21
18:10:46		 43.1165 13.3738 24 2019-07-19
13:20:29		 Bollettino Sismico Italiano INGV 49740811
Reviewed
Rev100 		ML 1.9 2017-01-21
18:10:46		 43.1075 13.4467 10 2017-01-21
18:32:54		 Sala Sismica INGV-Roma 39516331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-21 18:10:46 ± 0.17
Latitude 43.1165 ± 0.0063
Longitude 13.3738 ± 0.0074
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 49740811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 746
Semi-minor axis of confidence ellipse (meter) 166
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 138
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.06115
Epicentral distance of station farthest from the epicenter (degree) 0.34354
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 39516331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-21 18:32:54

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 49740811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-09-05 13:21:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1216.EHZ. 2017-01-21T18:10:59.88 0.3 undecidable manual S 229 38.1285 115 0.19 71
IV.CING.HHZ. 2017-01-21T18:10:58.55 0.3 undecidable manual S 333 32.1456 120 0.28 70
IV.MC2.EHZ. 2017-01-21T18:10:57.26 0.3 undecidable manual S 213 27.2505 125 0.1 74
IV.FDMO.HHZ. 2017-01-21T18:10:56.71 0.6 undecidable manual S 249 24.8529 128 0.06 50
IV.T1220.EHZ. 2017-01-21T18:10:56.55 0.6 undecidable manual S 268 23.0547 130 0.27 48
IV.CING.HHZ. 2017-01-21T18:10:53.17 0.1 undecidable manual P 333 32.1456 120 -0.02 99
IV.OFFI.HHZ. 2017-01-21T18:10:53.79 0.3 undecidable manual P 128 32.3454 120 0.57 67
IV.GUMA.HHZ. 2017-01-21T18:10:53.76 0.3 undecidable manual S 208 6.7932 162 -0.03 78
IV.MNTP.HNZ. 2017-01-21T18:10:53.85 0.6 undecidable manual S 73 8.0808 159 -0.06 51
IV.T1216.EHZ. 2017-01-21T18:10:53.86 0.1 undecidable manual P 229 38.1285 115 -0.16 95
IV.FDMO.HHZ. 2017-01-21T18:10:52.14 0.1 undecidable manual P 249 24.8529 128 -0.12 98
IV.MC2.EHZ. 2017-01-21T18:10:52.42 0.1 undecidable manual P 213 27.2505 125 -0.13 97
IV.T1220.EHZ. 2017-01-21T18:10:51.99 0.1 undecidable manual P 268 23.0547 130 -0.06 100
IV.GUMA.HHZ. 2017-01-21T18:10:50.43 0.1 undecidable manual P 208 6.7932 162 -0.18 100
IV.MNTP.HNZ. 2017-01-21T18:10:50.44 0.1 undecidable manual P 73 8.0808 159 -0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.8 0.000273 0.18 AML other m 2017-01-21T18:10:56.89
IV.FDMO.HHN. ML:1.7 0.00020850000000000003 1.56 AML other m 2017-01-21T18:10:57.18
IV.GUMA.HHN. ML:2.2 0.0011159999999999998 0.18 AML other m 2017-01-21T18:10:53.82
IV.GUMA.HHE. ML:1.8 0.000463 1.54 AML other m 2017-01-21T18:10:53.06
IV.GUMA.HNN. ML:2.1 0.000844 0.16 AML other m 2017-01-21T18:10:53.80
IV.GUMA.HNE. ML:2.1 0.0009155 0.16 AML other m 2017-01-21T18:10:53.81
IV.T1220.EHN. ML:2.2 0.000736 1.36 AML other m 2017-01-21T18:10:57.08
IV.T1220.HNN. ML:2.2 0.0007745 1.36 AML other m 2017-01-21T18:10:57.08
IV.T1220.HNE. ML:2.1 0.0006459999999999999 0.22 AML other m 2017-01-21T18:10:57.65
IV.T1220.EHE. ML:2.1 0.0006355 0.24 AML other m 2017-01-21T18:10:57.66
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