Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 23-09-2022 and time 01:07:09 (UTC) in region 4 km SW Folignano (AP)

A magnitude ML 1.4 earthquake occured in region: 4 km SW Folignano (AP), on

  • 23-09-2022 01:07:09 (UTC)
  • 23-09-2022 03:07:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7860, 13.6160 at 20 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
Folignano AP 4 9241 9241
Civitella del Tronto TE 4 5116 14357
Maltignano AP 8 2401 16758
Ascoli Piceno AP 8 49407 66165
Campli TE 9 7209 73374
Sant'Egidio alla Vibrata TE 9 9811 83185
Valle Castellana TE 11 977 84162
Ancarano TE 12 1857 86019
Castel di Lama AP 12 8634 94653
Rocca Santa Maria TE 13 537 95190
Appignano del Tronto AP 13 1785 96975
Torano Nuovo TE 14 1611 98586
Roccafluvione AP 14 2010 100596
Torricella Sicura TE 15 2641 103237
Venarotta AP 15 2066 105303
Colli del Tronto AP 15 3668 108971
Sant'Omero TE 15 5243 114214
Castorano AP 16 2380 116594
Teramo TE 16 54892 171486
Bellante TE 16 7152 178638
Acquasanta Terme AP 17 2916 181554
Castignano AP 17 2796 184350
Nereto TE 17 5242 189592
Spinetoli AP 17 7215 196807
Offida AP 18 5058 201865
Palmiano AP 18 196 202061
Controguerra TE 19 2436 204497
Corropoli TE 19 5045 209542
Monsampolo del Tronto AP 19 4611 214153
Rotella AP 19 906 215059

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km NW of Teramo (54892 inhabitants)
51 Km NE of L'Aquila (69753 inhabitants)
53 Km NW of Montesilvano (53738 inhabitants)
61 Km NW of Pescara (121014 inhabitants)
66 Km NW of Chieti (51815 inhabitants)
77 Km E of Foligno (57155 inhabitants)
83 Km E of Terni (111501 inhabitants)
93 Km S of Ancona (100861 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 1.4 2022-09-23
01:07:09		 42.7858 13.6162 20 2024-03-01
15:28:21		 Bollettino Sismico Italiano INGV 116311041
Reviewed
Rev100 		ML 1.3 2022-09-23
01:07:10		 42.7895 13.5812 10 2022-09-23
01:14:20		 Sala Sismica INGV-Roma 110033941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-23 01:07:09 ± 0.2
Latitude 42.7858 ± 0.0072
Longitude 13.6162 ± 0.0110
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116311041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 909
Semi-minor axis of confidence ellipse (meter) 153
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.46135
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 116311041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-12 12:27:25

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 110033941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-09-23 01:14:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2022-09-23T01:08:24.69 3.0 undecidable manual Sg 4.44 0
IV.ECTS.HHZ. 2022-09-23T01:08:11.38 3.0 positive manual Pg 8.41 0
IV.OSSC.HHZ. 2022-09-23T01:07:48.18 3.0 undecidable manual Pg 8.44 0
IV.PTRJ.HHZ. 2022-09-23T01:07:35.79 3.0 undecidable manual Sg 2.54 0
IV.FDMO.HHZ. 2022-09-23T01:07:25.98 0.6 undecidable manual S 303 51.2154 103 0.23 45
IV.CSP1.EHZ. 2022-09-23T01:07:24.98 0.6 undecidable manual S 316 47.619 104 0.16 46
IV.MC2.EHZ. 2022-09-23T01:07:22.61 0.3 undecidable manual S 292 37.4292 109 0.4 67
IV.MNTT.EHZ. 2022-09-23T01:07:22.13 0.6 undecidable manual S 357 30.6471 114 1.6 26
IV.SMA1.EHZ. 2022-09-23T01:07:20.47 0.3 undecidable manual S 233 28.6491 116 0.42 68
IV.MF5.EHZ. 2022-09-23T01:07:19.49 0.3 undecidable manual S 330 25.752 119 0.13 73
IV.MMO1.EHZ. 2022-09-23T01:07:19.43 0.3 undecidable manual S 298 26.6511 118 -0.15 72
IV.OFFI.HHZ. 2022-09-23T01:07:18.10 0.6 undecidable manual S 19 17.4714 132 0.54 45
IV.FDMO.HHZ. 2022-09-23T01:07:18.52 0.3 undecidable manual P 303 51.2154 103 -0.3 67
IV.TERO.HHZ. 2022-09-23T01:07:17.89 0.3 undecidable manual S 183 18.1707 131 0.2 73
IV.MTRA.EHE. 2022-09-23T01:07:17.71 0.6 undecidable manual S 260 18.1707 131 0.01 50
IV.CSP1.EHZ. 2022-09-23T01:07:17.91 0.1 undecidable manual P 316 47.619 104 -0.38 89
IV.MNTT.EHZ. 2022-09-23T01:07:16.01 0.1 undecidable manual P 357 30.6471 114 0.2 95
IV.MC2.EHZ. 2022-09-23T01:07:16.71 0.3 undecidable manual P 292 37.4292 109 -0.07 72
IV.MMO1.EHZ. 2022-09-23T01:07:15.01 0.1 undecidable manual P 298 26.6511 118 -0.25 94
IV.TRTR.HHE. 2022-09-23T01:07:15.16 0.3 undecidable manual P 84 24.3534 121 0.21 72
IV.PAOL.HHZ. 2022-09-23T01:07:15.13 3.0 undecidable manual P -4.87 0
IV.SMA1.EHZ. 2022-09-23T01:07:15.56 0.1 undecidable manual P 233 28.6491 116 0.03 98
IV.OFFI.HHZ. 2022-09-23T01:07:14.05 0.1 undecidable manual P 19 17.4714 132 -0.04 100
IV.TERO.HHZ. 2022-09-23T01:07:14.11 0.1 undecidable manual P 183 18.1707 131 -0.06 100
IV.ASCOL.EHN. 2022-09-23T01:07:14.84 0.6 undecidable manual S 343 7.5813 156 -1.14 35
IV.MTRA.EHE. 2022-09-23T01:07:14.15 0.3 undecidable manual P 260 18.1707 131 -0.03 75
IV.MF5.EHZ. 2022-09-23T01:07:14.96 0.3 undecidable manual P 330 25.752 119 -0.17 72
IV.PTRJ.HHZ. 2022-09-23T01:07:12.88 3.0 positive manual P -2.63 0
IV.ASCOL.EHN. 2022-09-23T01:07:12.55 0.3 undecidable manual P 343 7.5813 156 -0.64 66
IV.MSAG.HHZ. 2022-09-23T01:07:03.91 3.0 undecidable manual P -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TERO.HNE. ML:1.2 0.00010325092999999999 1.8496 AML other m 2022-09-23T01:07:18.96
IV.OFFI.HHN. ML:1.7 0.0002985 0.4 AML other m 2022-09-23T01:07:18.55
IV.OFFI.HHE. ML:1.6 0.00023687765 0.54 AML other m 2022-09-23T01:07:19.53
IV.SMA1.EHN. ML:1.1 0.00005375 0.1 AML other m 2022-09-23T01:07:20.54
IV.SMA1.EHE. ML:1.1 0.00005205 0.16 AML other m 2022-09-23T01:07:20.63
IV.TERO.HHN. ML:2.0 0.0005924723 0.24 AML other m 2022-09-23T01:07:21.43
IV.MF5.EHN. ML:1.2 0.000081390202 1.36 AML other m 2022-09-23T01:07:26.88
IV.TERO.HHE. ML:1.8 0.00036812298499999994 0.38 AML other m 2022-09-23T01:07:26.57
IV.TERO.HNN. ML:1.4 0.0001399029 0.78 AML other m 2022-09-23T01:07:28.53
IV.MF5.EHE. ML:1.2 0.00007167743 1.24 AML other m 2022-09-23T01:07:37.94
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