Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 28-04-2023 and time 11:15:42 (UTC) in region 3 km W Falerone (FM)

A magnitude ML 1.1 earthquake occured in region: 3 km W Falerone (FM), on

  • 28-04-2023 11:15:42 (UTC)
  • 28-04-2023 13:15:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1070, 13.4420 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
Falerone FM 3 3337 3337
Sant'Angelo in Pontano MC 4 1436 4773
Monte Vidon Corrado FM 4 731 5504
Montappone FM 4 1682 7186
Servigliano FM 5 2336 9522
Penna San Giovanni MC 6 1108 10630
Massa Fermana FM 6 963 11593
Loro Piceno MC 7 2401 13994
Ripe San Ginesio MC 7 852 14846
Belmonte Piceno FM 8 646 15492
Montegiorgio FM 8 6851 22343
Monte San Martino MC 8 765 23108
Colmurano MC 9 1263 24371
Gualdo MC 9 815 25186
Mogliano MC 10 4696 29882
Monteleone di Fermo FM 10 395 30277
San Ginesio MC 10 3498 33775
Monsampietro Morico FM 10 659 34434
Santa Vittoria in Matenano FM 11 1330 35764
Smerillo FM 11 365 36129
Urbisaglia MC 11 2628 38757
Magliano di Tenna FM 12 1452 40209
Montelparo FM 12 778 40987
Francavilla d'Ete FM 12 964 41951
Montottone FM 13 979 42930
Grottazzolina FM 13 3398 46328
Petriolo MC 13 1998 48326
Montefalcone Appennino FM 13 424 48750
Rapagnano FM 14 2145 50895
Sarnano MC 14 3264 54159
Monte Rinaldo FM 14 379 54538
Camporotondo di Fiastrone MC 15 563 55101
Monte San Pietrangeli FM 15 2458 57559
Cessapalombo MC 15 512 58071
Monte Giberto FM 16 801 58872
Amandola FM 16 3629 62501
Ortezzano FM 16 774 63275
Torre San Patrizio FM 16 2048 65323
Force AP 16 1354 66677
Comunanza AP 17 3166 69843
Monte Vidon Combatte FM 17 433 70276
Corridonia MC 17 15430 85706
Tolentino MC 17 20069 105775
Ponzano di Fermo FM 18 1674 107449
Caldarola MC 18 1823 109272
Belforte del Chienti MC 18 1886 111158
Petritoli FM 18 2335 113493
Montalto delle Marche AP 19 2122 115615
Montedinove AP 19 488 116103
Monte San Giusto MC 19 8191 124294
Rotella AP 19 906 125200
Pollenza MC 20 6618 131818
Montefortino FM 20 1178 132996

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km NW of Teramo (54892 inhabitants)
57 Km S of Ancona (100861 inhabitants)
62 Km E of Foligno (57155 inhabitants)
84 Km N of L'Aquila (69753 inhabitants)
86 Km E of Perugia (166134 inhabitants)
88 Km NW of Montesilvano (53738 inhabitants)
89 Km NE of Terni (111501 inhabitants)
89 Km SE of Fano (60888 inhabitants)
95 Km NW of Pescara (121014 inhabitants)
99 Km SE of Pesaro (94582 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 1.1 2023-04-28
11:15:42		 43.1067 13.4423 24 2024-03-01
17:18:09		 Bollettino Sismico Italiano INGV 117426081
Reviewed
Rev100 		ML 1.0 2023-04-28
11:15:43		 43.1142 13.4372 21 2023-04-28
11:25:16		 Sala Sismica INGV-Roma 116834731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-28 11:15:42 ± 0.14
Latitude 43.1067 ± 0.0036
Longitude 13.4423 ± 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 117426081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 482
Semi-minor axis of confidence ellipse (meter) 318
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 28
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40559
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 117426081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-29 12:07:01

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 116834731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-28 11:25:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2023-04-28T11:17:18.81 3.0 undecidable manual Pg 9.61 0
IV.CLTA.HHZ. 2023-04-28T11:17:07.72 3.0 negative manual Pn -2.88 0
IV.GIZZ.HHZ. 2023-04-28T11:17:05.15 3.0 positive manual Pg 13.26 0
GU.BURY.HHZ. 2023-04-28T11:17:01.35 3.0 undecidable manual Pg 20.559999 0
IV.VENT.EHZ. 2023-04-28T11:16:57.61 3.0 undecidable manual Sg 3.28 0
IV.PIPA.HHZ. 2023-04-28T11:16:54.25 3.0 undecidable manual Pg 5.5 0
IV.MRB1.HHZ. 2023-04-28T11:16:43.03 3.0 undecidable manual Sn -9.84 0
IV.MCI.EHZ. 2023-04-28T11:16:37.32 3.0 undecidable manual Sg -0.6 0
GU.POPM.HHZ. 2023-04-28T11:16:34.82 3.0 undecidable manual Sn 0.01 0
IV.MCRV.HHZ. 2023-04-28T11:16:33.07 3.0 undecidable manual Pg 8.24 0
IV.VENT.EHZ. 2023-04-28T11:16:25.04 3.0 undecidable manual Pg 4.49 0
IV.CSNT.HHZ. 2023-04-28T11:16:23.69 3.0 undecidable manual Sn -0.45 0
IV.MRB1.HHZ. 2023-04-28T11:16:22.78 3.0 positive manual Pn 3.05 0
NI.VINO.HHZ. 2023-04-28T11:16:19.65 3.0 undecidable manual Pn 0.06 0
IV.LMD.HHZ. 2023-04-28T11:16:00.56 3.0 positive manual P -0.19 0
IV.CESI.HHZ. 2023-04-28T11:15:58.57 0.3 undecidable manual S 256 45.0216 111 0.61 62
IV.NRCA.HHZ. 2023-04-28T11:15:57.09 0.6 undecidable manual S 221 40.3263 113 0.29 46
IV.EL6.EHZ. 2023-04-28T11:15:56.10 0.3 undecidable manual S 312 37.0296 116 0.11 71
IV.CING.HNZ. 2023-04-28T11:15:55.71 0.3 undecidable manual S 326 35.9418 116 -0.02 73
7F.SIB3.EHN. 2023-04-28T11:15:54.06 0.6 undecidable manual S 209 29.2485 123 -0.12 48
IV.FDMO.HHZ. 2023-04-28T11:15:54.34 0.3 undecidable manual S 255 29.8479 122 0.03 74
IV.MMO1.EHN. 2023-04-28T11:15:53.20 0.6 undecidable manual S 202 24.8529 128 -0.01 49
7F.SIB2.EHE. 2023-04-28T11:15:53.52 0.6 undecidable manual S 205 26.4513 126 -0.04 49
IV.CSP1.EHZ. 2023-04-28T11:15:52.03 0.6 undecidable manual S 265 19.2696 136 -0.08 50
IV.MNTT.EHE. 2023-04-28T11:15:51.88 0.6 undecidable manual S 112 13.3755 147 0.76 42
IV.CESI.HHZ. 2023-04-28T11:15:51.62 0.1 undecidable manual P 256 45.0216 111 0.04 96
IV.MF5.EHZ. 2023-04-28T11:15:51.39 0.3 undecidable manual S 174 13.2756 147 0.29 72
IV.EL6.EHZ. 2023-04-28T11:15:50.46 0.3 undecidable manual P 312 37.0296 116 0.02 73
IV.GUMA.HNN. 2023-04-28T11:15:50.57 0.6 undecidable manual S 241 9.9789 154 -0.1 50
IV.NRCA.HHZ. 2023-04-28T11:15:50.90 0.1 undecidable manual P 221 40.3263 113 -0.01 97
IV.MNTP.HNZ. 2023-04-28T11:15:50.07 0.6 undecidable manual S 32 4.0959 169 -0.11 51
IV.CING.HNZ. 2023-04-28T11:15:50.43 0.3 undecidable manual P 326 35.9418 116 0.14 71
IV.FDMO.HHZ. 2023-04-28T11:15:49.28 0.1 undecidable manual P 255 29.8479 122 -0.19 95
7F.SIB3.EHN. 2023-04-28T11:15:49.24 0.1 undecidable manual P 209 29.2485 123 -0.16 96
IV.SAP2.EHE. 2023-04-28T11:15:49.89 0.6 undecidable manual S 253 3.6963 170 -0.27 49
IV.CSP1.EHZ. 2023-04-28T11:15:48.02 0.1 undecidable manual P 265 19.2696 136 -0.18 97
IV.MMO1.EHN. 2023-04-28T11:15:48.75 0.1 undecidable manual P 202 24.8529 128 -0.09 98
7F.SIB2.EHE. 2023-04-28T11:15:48.88 0.1 undecidable manual P 205 26.4513 126 -0.16 96
IV.MF5.EHZ. 2023-04-28T11:15:47.73 0.1 undecidable manual P 174 13.2756 147 0.11 100
IV.GUMA.HNN. 2023-04-28T11:15:47.19 0.3 undecidable manual P 241 9.9789 154 -0.18 74
IV.MNTT.EHE. 2023-04-28T11:15:47.88 0.1 undecidable manual P 112 13.3755 147 0.25 97
IV.MNTP.HNZ. 2023-04-28T11:15:46.86 0.3 undecidable manual P 32 4.0959 169 -0.23 74
IV.SAP2.EHE. 2023-04-28T11:15:46.72 0.6 undecidable manual P 253 3.6963 170 -0.36 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.9 0.000029700000000000004 1.02 AML other m 2023-04-28T11:15:54.45
IV.FDMO.HHE. ML:0.7 0.0000207 0.22 AML other m 2023-04-28T11:15:55.66
IV.NRCA.HHE. ML:1.5 0.0000866 0.14 AML other m 2023-04-28T11:15:57.24
IV.NRCA.HHN. ML:1.6 0.0001107 0.12 AML other m 2023-04-28T11:15:57.81
IV.CESI.HHE. ML:1.0 0.0000249 1.12 AML other m 2023-04-28T11:15:58.41
IV.CESI.HHN. ML:0.9 0.00002235 1.04 AML other m 2023-04-28T11:15:59.31
IV.ASSB.HHE. ML:1.2 0.0000226 0.36 AML other m 2023-04-28T11:16:17.86
IV.ASSB.HHN. ML:1.1 0.0000197 1.02 AML other m 2023-04-28T11:16:18.57
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