Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 04-12-2023 and time 14:46:16 (Italy) in region 2 km NE Massa Fermana (FM)

A magnitude ML 1.2 earthquake occured in region: 2 km NE Massa Fermana (FM), on

  • 04-12-2023 13:46:16 (UTC)
  • 04-12-2023 14:46:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1650, 13.4880 at 23 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Massa Fermana FM 2 963 963
Mogliano MC 3 4696 5659
Montappone FM 4 1682 7341
Monte Vidon Corrado FM 5 731 8072
Francavilla d'Ete FM 5 964 9036
Montegiorgio FM 6 6851 15887
Loro Piceno MC 6 2401 18288
Falerone FM 6 3337 21625
Petriolo MC 7 1998 23623
Monte San Pietrangeli FM 8 2458 26081
Magliano di Tenna FM 9 1452 27533
Rapagnano FM 9 2145 29678
Belmonte Piceno FM 9 646 30324
Servigliano FM 9 2336 32660
Corridonia MC 10 15430 48090
Urbisaglia MC 10 2628 50718
Ripe San Ginesio MC 10 852 51570
Torre San Patrizio FM 10 2048 53618
Sant'Angelo in Pontano MC 10 1436 55054
Colmurano MC 11 1263 56317
Grottazzolina FM 11 3398 59715
Monte San Giusto MC 12 8191 67906
Monsampietro Morico FM 12 659 68565
Penna San Giovanni MC 13 1108 69673
Monteleone di Fermo FM 13 395 70068
Montottone FM 14 979 71047
Montegranaro FM 14 12990 84037
Monte Giberto FM 14 801 84838
San Ginesio MC 15 3498 88336
Monte San Martino MC 15 765 89101
Macerata MC 15 42473 131574
Ponzano di Fermo FM 16 1674 133248
Monte Urano FM 16 8353 141601
Pollenza MC 16 6618 148219
Santa Vittoria in Matenano FM 16 1330 149549
Gualdo MC 16 815 150364
Montelparo FM 17 778 151142
Monte Rinaldo FM 17 379 151521
Tolentino MC 17 20069 171590
Monte Vidon Combatte FM 17 433 172023
Petritoli FM 18 2335 174358
Sant'Elpidio a Mare FM 18 17110 191468
Ortezzano FM 18 774 192242
Smerillo FM 18 365 192607
Morrovalle MC 18 10195 202802
Camporotondo di Fiastrone MC 18 563 203365
Fermo FM 19 37655 241020
Cessapalombo MC 20 512 241532
Montefalcone Appennino FM 20 424 241956

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km S of Ancona (100861 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
68 Km E of Foligno (57155 inhabitants)
84 Km SE of Fano (60888 inhabitants)
89 Km E of Perugia (166134 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
91 Km N of L'Aquila (69753 inhabitants)
95 Km SE of Pesaro (94582 inhabitants)
96 Km NE of Terni (111501 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
Reviewed
Rev100 		ML 1.2 2023-12-04
13:46:16		 43.1653 13.4883 23 2023-12-04
13:56:15		 Sala Sismica INGV-Roma 123806671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-04 13:46:16 ± 0.21
Latitude 43.1653 ± 0.0063
Longitude 13.4883 ± 0.0099
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123806671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 919
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 920.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 216
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.09443
Epicentral distance of station farthest from the epicenter (degree) 0.54859
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 123806671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-04 13:56:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MML1.EHZ. 2023-12-04T13:46:31.43 0.3 undecidable manual S 262 42.2244 111 0.39 88
IV.FDMO.HHZ. 2023-12-04T13:46:29.29 0.6 undecidable manual S 246 35.5422 115 -0.1 63
IV.CING.HHZ. 2023-12-04T13:46:28.95 0.6 undecidable manual S 315 33.2445 117 0.1 63
IV.TERO.HHZ. 2023-12-04T13:46:27.49 1.0 positive manual P 171 60.8946 104 -0.25 29
IV.MF5.EHZ. 2023-12-04T13:46:26.21 0.3 undecidable manual S 187 19.869 134 0.29 94
IV.CSP1.EHZ. 2023-12-04T13:46:26.60 0.3 undecidable manual S 251 24.3534 127 -0.24 94
IV.MML1.EHZ. 2023-12-04T13:46:24.90 0.6 positive manual P 262 42.2244 111 -0.09 63
IV.SAP2.EHZ. 2023-12-04T13:46:24.26 0.3 undecidable manual S 223 10.4784 152 -0.14 98
IV.CING.HHZ. 2023-12-04T13:46:23.91 0.6 positive manual P 315 33.2445 117 0.19 62
IV.FDMO.HHZ. 2023-12-04T13:46:23.80 0.6 negative manual P 246 35.5422 115 -0.23 62
IV.MF5.EHZ. 2023-12-04T13:46:22.16 0.3 undecidable manual P 187 19.869 134 0.13 97
IV.CSP1.EHZ. 2023-12-04T13:46:22.40 0.3 undecidable manual P 251 24.3534 127 -0.16 96
IV.SAP2.EHZ. 2023-12-04T13:46:21.11 0.3 undecidable manual P 223 10.4784 152 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.3 0.00006975 0.58 AML other m 2023-12-04T13:46:29.76
IV.CING.HHE. ML:1.0 0.00003955 1.32 AML other m 2023-12-04T13:46:29.11
IV.FDMO.HHN. ML:1.3 0.00006475 0.1 AML other m 2023-12-04T13:46:29.79
IV.CING.HHN. ML:0.9 0.00003093759 0.2368 AML other m 2023-12-04T13:46:29.42
IV.NRCA.HNN. ML:2.1 0.0003005 0.12 AML other m 2023-12-04T13:46:33.40
IV.NRCA.HHN. ML:2.1 0.00028900000000000003 0.1 AML other m 2023-12-04T13:46:33.34
IV.MF5.EHE. ML:1.5 0.00015198006 0.16 AML other m 2023-12-04T13:46:26.45
IV.MF5.EHN. ML:1.5 0.00014795245000000001 0.16 AML other m 2023-12-04T13:46:26.46
IV.CSP1.EHE. ML:1.1 0.00005850137 0.4992 AML other m 2023-12-04T13:46:27.14
IV.CSP1.EHN. ML:1.2 0.000073321845 0.6976 AML other m 2023-12-04T13:46:26.72
IV.MML1.EHE. ML:1.0 0.000024506605 0.6208 AML other m 2023-12-04T13:46:31.87
IV.MML1.EHN. ML:1.0 0.000028689224999999998 0.2048 AML other m 2023-12-04T13:46:32.22
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