Earthquake with magnitude of ML 1.2 on date 18-10-2023 and time 03:29:35 (Italy) in region 2 km SW Urbisaglia (MC)

A magnitude ML 1.2 earthquake occured in region: 2 km SW Urbisaglia (MC), on

  • 18-10-2023 01:29:35 (UTC)
  • 18-10-2023 03:29:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1830, 13.3700 at 31 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Urbisaglia MC 2 2628 2628
Colmurano MC 2 1263 3891
Loro Piceno MC 4 2401 6292
Ripe San Ginesio MC 4 852 7144
Tolentino MC 8 20069 27213
Petriolo MC 9 1998 29211
Mogliano MC 9 4696 33907
San Ginesio MC 9 3498 37405
Massa Fermana FM 9 963 38368
Sant'Angelo in Pontano MC 9 1436 39804
Montappone FM 10 1682 41486
Pollenza MC 10 6618 48104
Camporotondo di Fiastrone MC 10 563 48667
Belforte del Chienti MC 11 1886 50553
Monte Vidon Corrado FM 12 731 51284
Falerone FM 12 3337 54621
Cessapalombo MC 12 512 55133
Caldarola MC 13 1823 56956
Gualdo MC 13 815 57771
Corridonia MC 14 15430 73201
Francavilla d'Ete FM 14 964 74165
Serrapetrona MC 15 966 75131
Penna San Giovanni MC 15 1108 76239
Macerata MC 15 42473 118712
Montegiorgio FM 15 6851 125563
Servigliano FM 15 2336 127899
Treia MC 15 9403 137302
San Severino Marche MC 17 12726 150028
Belmonte Piceno FM 17 646 150674
Monte San Pietrangeli FM 17 2458 153132
Sarnano MC 17 3264 156396
Monte San Martino MC 18 765 157161
Magliano di Tenna FM 18 1452 158613
Rapagnano FM 18 2145 160758
Monte San Giusto MC 19 8191 168949
Torre San Patrizio FM 19 2048 170997
Monsampietro Morico FM 20 659 171656
Monteleone di Fermo FM 20 395 172051

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km S of Ancona (100861 inhabitants)
60 Km E of Foligno (57155 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
79 Km SE of Fano (60888 inhabitants)
80 Km E of Perugia (166134 inhabitants)
89 Km SE of Pesaro (94582 inhabitants)
91 Km NE of Terni (111501 inhabitants)
92 Km N of L'Aquila (69753 inhabitants)
98 Km NW of Montesilvano (53738 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 2023-10-18
01:29:35
43.1828 13.3705 31 2023-10-18
01:45:58
Sala Sismica INGV-Roma 122164641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-18 01:29:35 ± 0.37
Latitude 43.1828 ± 0.0108
Longitude 13.3705 ± 0.0185
Depth (km) 31 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 122164641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1463
Semi-minor axis of confidence ellipse (meter) 863
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 1460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 194
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
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) 0.12321
Epicentral distance of station farthest from the epicenter (degree) 0.44337
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 122164641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-18 01:45:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-10-18T01:29:50.75 0.6 undecidable manual S 208 43.9227 120 -0.22 45
IV.MML1.EHZ. 2023-10-18T01:29:48.79 0.6 undecidable manual S 257 33.1446 129 0.2 47
IV.CING.HHZ. 2023-10-18T01:29:47.31 0.6 undecidable manual S 327 25.6521 137 0.19 48
IV.MF5.EHZ. 2023-10-18T01:29:46.87 0.6 undecidable manual S 161 22.755 140 0.25 47
IV.GUMA.HHZ. 2023-10-18T01:29:44.93 0.6 undecidable manual S 192 13.6752 154 -0.35 46
IV.NRCA.HHZ. 2023-10-18T01:29:44.35 0.6 negative manual P 208 43.9227 120 0.02 47
IV.ARVD.HHZ. 2023-10-18T01:29:44.58 0.3 undecidable manual P 315 49.2174 117 -0.46 63
IV.MML1.EHZ. 2023-10-18T01:29:43.05 1.0 positive manual P 257 33.1446 129 0.09 24
IV.MF5.EHZ. 2023-10-18T01:29:42.14 1.0 undecidable manual P 161 22.755 140 0.32 23
IV.CING.HHZ. 2023-10-18T01:29:42.49 1.0 positive manual P 327 25.6521 137 0.38 23
IV.GUMA.HHZ. 2023-10-18T01:29:41.11 0.1 negative manual P 192 13.6752 154 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:1.5 0.00012759999999999998 0.16 AML other m 2023-10-18T01:29:45.11
IV.GUMA.HHN. ML:1.3 0.0000845 0.34 AML other m 2023-10-18T01:29:45.29
IV.NRCA.HHE. ML:1.0 0.00002355 0.44 AML other m 2023-10-18T01:29:51.32
IV.NRCA.HHN. ML:0.6 0.000012175 0.64 AML other m 2023-10-18T01:29:51.72
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