Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 11-01-2021 and time 06:34:23 (UTC) in region 3 km SW Falerone (FM)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Falerone (FM), on

  • 11-01-2021 06:34:23 (UTC)
  • 11-01-2021 07:34:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0880, 13.4450 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
Falerone FM 3 3337 3337
Penna San Giovanni MC 4 1108 4445
Servigliano FM 4 2336 6781
Sant'Angelo in Pontano MC 4 1436 8217
Monte Vidon Corrado FM 5 731 8948
Montappone FM 6 1682 10630
Monte San Martino MC 6 765 11395
Massa Fermana FM 8 963 12358
Belmonte Piceno FM 8 646 13004
Monteleone di Fermo FM 8 395 13399
Santa Vittoria in Matenano FM 9 1330 14729
Ripe San Ginesio MC 9 852 15581
Gualdo MC 9 815 16396
Montegiorgio FM 9 6851 23247
Loro Piceno MC 9 2401 25648
Smerillo FM 9 365 26013
Monsampietro Morico FM 9 659 26672
Montelparo FM 11 778 27450
San Ginesio MC 11 3498 30948
Montefalcone Appennino FM 11 424 31372
Colmurano MC 11 1263 32635
Mogliano MC 11 4696 37331
Montottone FM 12 979 38310
Monte Rinaldo FM 13 379 38689
Magliano di Tenna FM 13 1452 40141
Sarnano MC 13 3264 43405
Grottazzolina FM 13 3398 46803
Urbisaglia MC 13 2628 49431
Amandola FM 14 3629 53060
Francavilla d'Ete FM 14 964 54024
Force AP 14 1354 55378
Comunanza AP 15 3166 58544
Ortezzano FM 15 774 59318
Rapagnano FM 15 2145 61463
Petriolo MC 15 1998 63461
Monte Giberto FM 15 801 64262
Cessapalombo MC 15 512 64774
Camporotondo di Fiastrone MC 15 563 65337
Monte Vidon Combatte FM 16 433 65770
Monte San Pietrangeli FM 16 2458 68228
Torre San Patrizio FM 17 2048 70276
Montalto delle Marche AP 17 2122 72398
Petritoli FM 17 2335 74733
Montedinove AP 17 488 75221
Rotella AP 18 906 76127
Ponzano di Fermo FM 18 1674 77801
Montefortino FM 18 1178 78979
Caldarola MC 19 1823 80802
Corridonia MC 19 15430 96232
Tolentino MC 19 20069 116301
Belforte del Chienti MC 19 1886 118187

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km NW of Teramo (54892 inhabitants)
59 Km S of Ancona (100861 inhabitants)
62 Km E of Foligno (57155 inhabitants)
82 Km N of L'Aquila (69753 inhabitants)
86 Km E of Perugia (166134 inhabitants)
86 Km NW of Montesilvano (53738 inhabitants)
88 Km NE of Terni (111501 inhabitants)
91 Km SE of Fano (60888 inhabitants)
93 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 1.8 2021-01-11
06:34:23		 43.0878 13.4453 23 2021-07-12
16:54:55		 Bollettino Sismico Italiano INGV 86205401
Reviewed
Rev100 		ML 1.8 2021-01-11
06:34:23		 43.0917 13.4598 25 2021-01-11
06:41:06		 Sala Sismica INGV-Roma 86164841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-11 06:34:23 ± 0.09
Latitude 43.0878 ± 0.0036
Longitude 13.4453 ± 0.0062
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 86205401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 404
Semi-minor axis of confidence ellipse (meter) 254
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 258
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.03507
Epicentral distance of station farthest from the epicenter (degree) 0.47934
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 86164841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-11 06:41:06

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 86205401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-02 15:00:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-01-11T06:34:40.80 0.3 undecidable manual S 166 53.2023 107 0.21 66
IV.SMA1.EHZ. 2021-01-11T06:34:40.10 0.6 undecidable manual S 190 51.5151 107 -0.07 46
IV.CESI.HHZ. 2021-01-11T06:34:39.12 0.3 undecidable manual S 258 44.8218 110 0.65 61
IV.SNTG.HHZ. 2021-01-11T06:34:38.81 0.6 undecidable manual S 295 44.8218 110 0.33 45
IV.NRCA.HHZ. 2021-01-11T06:34:37.34 0.6 undecidable manual S 224 38.9277 114 0.32 45
IV.EL6.EHZ. 2021-01-11T06:34:37.46 0.3 undecidable manual S 314 38.628 114 0.52 65
IV.MTRA.EHE. 2021-01-11T06:34:36.24 0.3 undecidable manual S 186 36.9297 115 -0.29 68
IV.FEMA.HNE. 2021-01-11T06:34:36.60 0.6 undecidable manual S 247 34.9428 117 0.54 43
IV.CING.HNN. 2021-01-11T06:34:36.86 0.6 undecidable manual S 328 37.7289 115 0.12 47
IV.MC2.EHZ. 2021-01-11T06:34:34.81 0.6 undecidable manual S 227 28.5492 123 0.24 46
IV.FDMO.HHZ. 2021-01-11T06:34:34.84 0.6 undecidable manual S 259 29.5482 122 0.04 48
IV.MMO1.EHZ. 2021-01-11T06:34:33.09 0.6 undecidable manual S 205 22.9548 130 -0.29 46
IV.SMA1.EHZ. 2021-01-11T06:34:33.05 0.3 undecidable manual P 190 51.5151 107 -0.05 69
IV.TERO.HHZ. 2021-01-11T06:34:33.13 0.3 undecidable manual P 166 53.2023 107 -0.22 67
IV.AOI.HHE. 2021-01-11T06:34:33.39 0.3 undecidable manual P 14 52.8027 107 0.09 68
IV.CESI.HHZ. 2021-01-11T06:34:32.21 0.1 positive manual P 258 44.8218 110 0.09 93
IV.MNTT.EHZ. 2021-01-11T06:34:32.04 0.6 undecidable manual S 103 12.4764 148 0.52 43
IV.SNTG.HHZ. 2021-01-11T06:34:32.09 0.1 undecidable manual P 295 44.8218 110 -0.04 92
IV.PF6.EHZ. 2021-01-11T06:34:32.69 0.6 undecidable manual S 285 21.0678 132 -0.3 46
IV.CSP1.EHZ. 2021-01-11T06:34:32.49 0.3 undecidable manual S 271 19.4694 135 -0.19 70
IV.MF5.EHZ. 2021-01-11T06:34:31.27 0.6 undecidable manual S 174 11.1777 151 -0.07 50
IV.NRCA.HHZ. 2021-01-11T06:34:31.22 0.1 positive manual P 224 38.9277 114 -0.07 93
IV.MTRA.EHE. 2021-01-11T06:34:31.34 0.3 undecidable manual P 186 36.9297 115 0.33 66
IV.EL6.EHZ. 2021-01-11T06:34:31.19 0.1 undecidable manual P 314 38.628 114 -0.05 93
IV.MNTP.HNZ. 2021-01-11T06:34:30.74 0.6 undecidable manual S 19 5.7942 164 -0.06 50
IV.CING.HNN. 2021-01-11T06:34:30.82 0.1 undecidable manual P 328 37.7289 115 -0.3 89
IV.SAP2.EHZ. 2021-01-11T06:34:30.67 0.1 undecidable manual S 285 3.8961 169 -0.01 100
IV.GUMA.HHZ. 2021-01-11T06:34:30.89 0.6 undecidable manual S 253 9.3795 155 -0.23 48
IV.FEMA.HNE. 2021-01-11T06:34:30.75 0.3 undecidable manual P 247 34.9428 117 0.02 71
IV.FDMO.HHZ. 2021-01-11T06:34:29.89 0.1 positive manual P 259 29.5482 122 -0.12 94
IV.MMO1.EHZ. 2021-01-11T06:34:29.03 0.1 positive manual P 205 22.9548 130 -0.15 95
IV.MC2.EHZ. 2021-01-11T06:34:29.93 0.1 positive manual P 227 28.5492 123 0.06 96
IV.PF6.EHZ. 2021-01-11T06:34:28.74 0.1 positive manual P 285 21.0678 132 -0.22 93
IV.CSP1.EHZ. 2021-01-11T06:34:28.66 0.1 positive manual P 271 19.4694 135 -0.12 95
IV.MNTT.EHZ. 2021-01-11T06:34:28.22 0.1 undecidable manual P 103 12.4764 148 0.11 96
IV.MF5.EHZ. 2021-01-11T06:34:28.06 0.1 negative manual P 174 11.1777 151 0.06 98
IV.SAP2.EHZ. 2021-01-11T06:34:27.48 0.1 undecidable manual P 285 3.8961 169 -0.14 98
IV.GUMA.HHZ. 2021-01-11T06:34:27.78 0.1 positive manual P 253 9.3795 155 -0.1 98
IV.MNTP.HNZ. 2021-01-11T06:34:27.58 0.3 undecidable manual P 19 5.7942 164 -0.11 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SAP2.EHE. ML:1.9 0.0005200000000000001 1.2 AML other m 2021-01-11T06:34:30.28
IV.GUMA.HHN. ML:2.0 0.0006924999999999999 0.3 AML other m 2021-01-11T06:34:31.39
IV.SAP2.EHN. ML:2.5 0.0020800000000000003 1.22 AML other m 2021-01-11T06:34:31.95
IV.MF5.EHN. ML:2.0 0.0006315 0.22 AML other m 2021-01-11T06:34:31.76
IV.GUMA.HHE. ML:1.8 0.00038950000000000003 0.24 AML other m 2021-01-11T06:34:31.92
IV.MF5.EHE. ML:2.0 0.0005605 1.44 AML other m 2021-01-11T06:34:32.83
IV.MNTT.EHN. ML:2.2 0.0008979999999999999 0.28 AML other m 2021-01-11T06:34:32.23
IV.CSP1.EHN. ML:2.0 0.0005895 0.36 AML other m 2021-01-11T06:34:32.78
IV.CSP1.EHE. ML:2.0 0.0005115 0.16 AML other m 2021-01-11T06:34:32.97
IV.MNTT.EHE. ML:2.4 0.0015350000000000001 0.32 AML other m 2021-01-11T06:34:33.06
IV.FDMO.HHN. ML:1.4 0.0000877 0.42 AML other m 2021-01-11T06:34:35.03
IV.FDMO.HHE. ML:1.7 0.00020400000000000003 0.22 AML other m 2021-01-11T06:34:35.14
IV.NRCA.HHN. ML:1.8 0.000191 0.16 AML other m 2021-01-11T06:34:37.50
IV.NRCA.HHE. ML:1.8 0.000213 0.54 AML other m 2021-01-11T06:34:38.48
IV.SNTG.HHN. ML:1.7 0.00014450000000000002 0.28 AML other m 2021-01-11T06:34:39.36
IV.CESI.HHN. ML:1.6 0.00010089999999999999 0.22 AML other m 2021-01-11T06:34:39.45
IV.CESI.HHE. ML:1.4 0.0000711 0.7 AML other m 2021-01-11T06:34:39.62
IV.SNTG.HHE. ML:1.6 0.0001057 0.58 AML other m 2021-01-11T06:34:40.33
IV.TERO.HHN. ML:1.6 0.0000971824 0.5824 AML other m 2021-01-11T06:34:40.26
IV.SMA1.EHN. ML:1.6 0.00007764999999999999 0.84 AML other m 2021-01-11T06:34:42.05
IV.TERO.HHE. ML:1.1 0.00003158072 0.1792 AML other m 2021-01-11T06:34:42.08
IV.SMA1.EHE. ML:1.7 0.00010435 0.58 AML other m 2021-01-11T06:34:44.40
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