Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 22-09-2023 and time 13:56:45 (Italy) in region 2 km N Gualdo (MC)

A magnitude ML 1.9 earthquake occured in region: 2 km N Gualdo (MC), on

  • 22-09-2023 11:56:45 (UTC)
  • 22-09-2023 13:56:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0900, 13.3400 at 22 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
Gualdo MC 2 815 815
San Ginesio MC 3 3498 4313
Sant'Angelo in Pontano MC 5 1436 5749
Ripe San Ginesio MC 6 852 6601
Sarnano MC 7 3264 9865
Cessapalombo MC 7 512 10377
Camporotondo di Fiastrone MC 8 563 10940
Penna San Giovanni MC 8 1108 12048
Colmurano MC 8 1263 13311
Monte San Martino MC 10 765 14076
Loro Piceno MC 11 2401 16477
Caldarola MC 11 1823 18300
Falerone FM 11 3337 21637
Montappone FM 12 1682 23319
Belforte del Chienti MC 12 1886 25205
Amandola FM 12 3629 28834
Monte Vidon Corrado FM 12 731 29565
Urbisaglia MC 12 2628 32193
Servigliano FM 13 2336 34529
Smerillo FM 13 365 34894
Massa Fermana FM 13 963 35857
Bolognola MC 14 142 35999
Tolentino MC 14 20069 56068
Montefalcone Appennino FM 15 424 56492
Santa Vittoria in Matenano FM 15 1330 57822
Acquacanina MC 15 121 57943
Serrapetrona MC 16 966 58909
Mogliano MC 16 4696 63605
Comunanza AP 16 3166 66771
Fiastra MC 16 559 67330
Monteleone di Fermo FM 16 395 67725
Belmonte Piceno FM 16 646 68371
Montefortino FM 16 1178 69549
Montegiorgio FM 17 6851 76400
Monsampietro Morico FM 18 659 77059
Montelparo FM 18 778 77837
Petriolo MC 18 1998 79835
Force AP 19 1354 81189
Francavilla d'Ete FM 20 964 82153
Pollenza MC 20 6618 88771

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
60 Km S of Ancona (100861 inhabitants)
77 Km E of Perugia (166134 inhabitants)
82 Km NE of Terni (111501 inhabitants)
82 Km N of L'Aquila (69753 inhabitants)
88 Km SE of Fano (60888 inhabitants)
92 Km NW of Montesilvano (53738 inhabitants)
98 Km SE of Pesaro (94582 inhabitants)
100 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 1.9 2023-09-22
11:56:45		 43.0903 13.3402 22 2023-09-22
12:09:42		 Sala Sismica INGV-Roma 121357171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-22 11:56:45 ± 0.09
Latitude 43.0903 ± 0.0036
Longitude 13.3402 ± 0.0062
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121357171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 222
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 66
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51981
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 26
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 121357171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-22 12:09:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
ST.RONC.EHZ. 2023-09-22T11:58:22.99 3.0 undecidable manual Sn 1.36 0
IV.MUCR.HHZ. 2023-09-22T11:58:18.87 3.0 undecidable manual Pg 15.54 0
OX.AGOR.HHZ. 2023-09-22T11:58:12.36 3.0 undecidable manual Sn -5.5 0
IV.ESML.HHZ. 2023-09-22T11:58:07.91 3.0 negative manual Pn -1.12 0
IV.SICLA.EHZ. 2023-09-22T11:58:05.78 3.0 positive manual Pn 2.69 0
ST.RONC.HNZ. 2023-09-22T11:57:47.84 3.0 undecidable manual Pg 8.01 0
IV.FNVD.HHZ. 2023-09-22T11:57:45.26 3.0 undecidable manual Sn 1.45 0
OX.AGOR.HHZ. 2023-09-22T11:57:35.26 3.0 undecidable manual Pn -2.45 0
ST.VARA.EHZ. 2023-09-22T11:57:33.58 3.0 undecidable manual Pn -3.03 0
IV.MCRV.HHZ. 2023-09-22T11:57:31.09 3.0 undecidable manual Pn 1.96 0
IV.MRB1.HNZ. 2023-09-22T11:57:26.67 3.0 undecidable manual Pg 2.61 0
MN.TRI.HHZ. 2023-09-22T11:57:25.18 3.0 positive manual Pn -3.19 0
IV.ZCCA.HNZ. 2023-09-22T11:57:24.52 3.0 undecidable manual Pg 3.33 0
IV.RIBO.EHZ.01 2023-09-22T11:57:19.59 3.0 positive manual Pg 4.45 0
IV.PIEI.HHZ. 2023-09-22T11:57:11.48 3.0 undecidable manual S -0.53 0
IV.MPAG.EHZ. 2023-09-22T11:57:09.94 3.0 undecidable manual S -0.45 0
IV.MURB.HHZ. 2023-09-22T11:57:08.71 3.0 undecidable manual S 0.59 0
IV.AOI.HHE. 2023-09-22T11:57:03.87 0.6 undecidable manual S 22 55.2003 104 0.47 43
IV.T0110.HHZ. 2023-09-22T11:57:00.65 3.0 undecidable manual P -3.87 0
IV.PIEI.HHZ. 2023-09-22T11:56:59.76 3.0 positive manual P -0.96 0
IV.SNTG.HHZ. 2023-09-22T11:56:59.19 0.6 undecidable manual S 300 37.1295 113 0.38 45
IV.CING.HHZ. 2023-09-22T11:56:58.00 0.6 undecidable manual S 340 33.744 115 0.02 49
IV.NRCA.HHZ. 2023-09-22T11:56:58.36 0.6 undecidable manual S 213 33.8439 115 0.35 46
IV.GIGS.HHZ. 2023-09-22T11:56:58.33 3.0 undecidable manual P -1.36 0
IV.RM33.EHZ. 2023-09-22T11:56:57.45 3.0 positive manual P -0.81 0
IV.ATFO.HHZ. 2023-09-22T11:56:57.12 3.0 negative manual P -1.52 0
IV.TERO.HNZ. 2023-09-22T11:56:56.61 3.0 undecidable manual P -0.29 0
IV.FEMA.HNZ. 2023-09-22T11:56:56.95 0.6 undecidable manual S 239 27.5502 121 0.44 45
IV.ATCC.EHZ. 2023-09-22T11:56:56.37 0.1 negative manual P 281 57.6978 103 0.03 94
IV.MC2.EHZ. 2023-09-22T11:56:56.03 0.6 undecidable manual S 212 23.3544 127 0.44 46
IV.ARVD.HHZ. 2023-09-22T11:56:56.07 0.6 undecidable manual P 325 55.5 104 0.05 47
IV.AOI.HHE. 2023-09-22T11:56:55.75 0.1 undecidable manual P 22 55.2003 104 -0.23 90
IV.FOSV.EHZ. 2023-09-22T11:56:55.52 0.3 positive manual P 296 52.0035 105 0.01 71
IV.MMO1.EHZ. 2023-09-22T11:56:55.13 0.6 undecidable manual S 183 21.1677 130 -0.01 50
7F.SIB2.EHZ. 2023-09-22T11:56:55.33 0.6 undecidable manual S 188 22.2555 128 -0.04 50
IV.FDMO.HHZ. 2023-09-22T11:56:55.37 0.6 undecidable manual S 254 21.3675 129 0.2 48
7F.SIB1.EHZ. 2023-09-22T11:56:55.72 0.6 undecidable manual S 195 22.4553 128 0.32 47
7F.SIB3.EHZ. 2023-09-22T11:56:55.87 0.6 undecidable manual S 193 24.5532 125 0.02 49
IV.MF5.EHZ. 2023-09-22T11:56:54.10 0.6 undecidable manual S 140 14.9739 141 0.14 49
IV.SMA1.EHZ. 2023-09-22T11:56:54.87 3.0 positive manual P -1.05 0
IV.SNTG.HHZ. 2023-09-22T11:56:53.13 1.0 undecidable manual P 300 37.1295 113 -0.2 23
IV.PF6.EHZ. 2023-09-22T11:56:53.47 0.6 undecidable manual S 294 12.9759 145 -0.17 49
IV.OFFI.HHZ. 2023-09-22T11:56:53.20 0.6 negative manual P 121 32.9448 116 0.47 44
VM.MRSC.HNE. 2023-09-22T11:56:53.12 0.1 undecidable manual P 91 31.746 117 0.55 85
IV.CSP1.EHZ. 2023-09-22T11:56:53.36 0.6 undecidable manual S 271 10.9779 150 0 51
IV.CESI.HHZ. 2023-09-22T11:56:53.34 0.3 undecidable manual P 255 36.5412 113 0.09 72
IV.FEMA.HNZ. 2023-09-22T11:56:52.12 0.1 undecidable manual P 239 27.5502 121 0.12 97
IV.CING.HHZ. 2023-09-22T11:56:52.52 0.1 positive manual P 340 33.744 115 -0.33 91
IV.GUMA.HHZ. 2023-09-22T11:56:52.60 0.6 undecidable manual S 188 3.0969 171 -0.04 51
IT.MTCL.HGZ. 2023-09-22T11:56:52.27 0.1 undecidable manual P 249 29.6481 119 -0.01 98
IV.NRCA.HHZ. 2023-09-22T11:56:52.74 0.1 undecidable manual P 213 33.8439 115 -0.13 95
IV.SAP2.EHZ. 2023-09-22T11:56:52.55 0.6 undecidable manual S 82 4.7952 166 -0.18 50
IV.MML1.EHZ. 2023-09-22T11:56:52.31 1.0 undecidable manual P 275 29.9478 119 -0.02 24
IV.FDMO.HHZ. 2023-09-22T11:56:51.13 1.0 undecidable manual P 254 21.3675 129 -0.1 24
7F.SIB1.EHZ. 2023-09-22T11:56:51.20 0.1 undecidable manual P 195 22.4553 128 -0.16 97
IV.MNTT.EHZ. 2023-09-22T11:56:51.16 0.1 negative manual P 99 20.9679 130 -0.02 100
7F.SIB3.EHZ. 2023-09-22T11:56:51.36 0.1 undecidable manual P 193 24.5532 125 -0.26 95
IV.MDAR.HNZ. 2023-09-22T11:56:51.61 0.1 undecidable manual P 305 19.5693 132 0.58 88
7F.SIB2.EHZ. 2023-09-22T11:56:51.00 0.1 undecidable manual P 188 22.2555 128 -0.34 93
IV.MC2.EHZ. 2023-09-22T11:56:51.45 0.1 undecidable manual P 212 23.3544 127 -0.02 99
IV.CSP1.EHZ. 2023-09-22T11:56:50.00 1.0 undecidable manual P 271 10.9779 150 -0.18 24
IV.MF5.EHZ. 2023-09-22T11:56:50.44 0.1 negative manual P 140 14.9739 141 -0.09 100
IV.PF6.EHZ. 2023-09-22T11:56:50.04 0.1 undecidable manual P 294 12.9759 145 -0.3 95
IV.MMO1.EHZ. 2023-09-22T11:56:50.94 0.1 positive manual P 183 21.1677 130 -0.27 95
IV.GUMA.HHZ. 2023-09-22T11:56:49.43 0.6 undecidable manual P 188 3.0969 171 -0.34 48
IV.SAP2.EHZ. 2023-09-22T11:56:49.62 0.1 undecidable manual P 82 4.7952 166 -0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GUMA.HHE. ML:2.0 0.0008914999999999999 0.26 AML other m 2023-09-22T11:56:52.73
IV.GUMA.HNN. ML:2.0 0.000798 0.16 AML other m 2023-09-22T11:56:52.82
IV.GUMA.HHN. ML:1.9 0.000694 0.16 AML other m 2023-09-22T11:56:52.83
IV.GUMA.HNE. ML:1.8 0.000477 1.2 AML other m 2023-09-22T11:56:53.26
IV.CSP1.EHE. ML:2.5 0.002225 0.14 AML other m 2023-09-22T11:56:53.65
IV.CSP1.EHN. ML:2.5 0.001985 0.32 AML other m 2023-09-22T11:56:53.56
IV.MF5.EHN. ML:2.1 0.0007175 0.28 AML other m 2023-09-22T11:56:54.25
IV.MF5.EHE. ML:2.0 0.0006810000000000001 0.62 AML other m 2023-09-22T11:56:54.33
IV.MMO1.EHE. ML:1.7 0.0002665 0.58 AML other m 2023-09-22T11:56:55.66
IV.FDMO.HHE. ML:2.1 0.000618 0.78 AML other m 2023-09-22T11:56:55.58
IV.MNTT.EHN. ML:2.1 0.0006054999999999999 0.7 AML other m 2023-09-22T11:56:55.85
IV.MNTT.EHE. ML:2.1 0.0007055 1.72 AML other m 2023-09-22T11:56:55.07
IV.MMO1.EHN. ML:2.0 0.00046399999999999995 0.82 AML other m 2023-09-22T11:56:56.02
IV.FDMO.HHN. ML:1.9 0.000431 1.42 AML other m 2023-09-22T11:56:56.94
IV.MML1.EHE. ML:1.7 0.000214 0.12 AML other m 2023-09-22T11:56:57.82
IV.CING.HHN. ML:1.9 0.0003075 0.18 AML other m 2023-09-22T11:56:58.25
IV.CING.HHE. ML:2.0 0.000334 0.2 AML other m 2023-09-22T11:56:58.28
IV.MML1.EHN. ML:1.9 0.000331 0.76 AML other m 2023-09-22T11:56:58.84
IV.NRCA.HHE. ML:2.4 0.000878 0.14 AML other m 2023-09-22T11:56:58.68
IV.NRCA.HHN. ML:2.2 0.000614 0.6 AML other m 2023-09-22T11:56:59.52
IV.SNTG.HHN. ML:2.1 0.000375 0.18 AML other m 2023-09-22T11:56:59.46
IV.SNTG.HHE. ML:1.8 0.000212 0.58 AML other m 2023-09-22T11:56:59.49
IV.CESI.HHN. ML:1.9 0.0002405 1.14 AML other m 2023-09-22T11:56:59.92
IV.OFFI.HHN. ML:1.8 0.000241 0.66 AML other m 2023-09-22T11:57:00.07
IV.CESI.HHE. ML:1.7 0.00014749999999999998 0.68 AML other m 2023-09-22T11:57:00.40
IV.OFFI.HHE. ML:1.9 0.000291 0.64 AML other m 2023-09-22T11:57:01.54
IV.FOSV.EHN. ML:1.9 0.000178 0.36 AML other m 2023-09-22T11:57:03.74
IV.FOSV.EHE. ML:1.7 0.00012255 1.38 AML other m 2023-09-22T11:57:03.75
IV.SMA1.EHN. ML:1.6 0.00008360000000000001 1.04 AML other m 2023-09-22T11:57:04.23
IV.ARVD.HHN. ML:1.5 0.00006435 0.58 AML other m 2023-09-22T11:57:04.15
IV.SMA1.EHE. ML:1.6 0.00008455 0.84 AML other m 2023-09-22T11:57:04.54
IV.TERO.HHN. ML:1.8 0.00013350000000000002 0.08 AML other m 2023-09-22T11:57:05.40
IV.TERO.HHE. ML:1.7 0.000117 0.28 AML other m 2023-09-22T11:57:05.51
IV.ATCC.EHN. ML:1.6 0.00007905 0.32 AML other m 2023-09-22T11:57:06.30
IV.ATCC.EHE. ML:1.7 0.00009815 0.96 AML other m 2023-09-22T11:57:06.87
IV.ARVD.HHE. ML:1.4 0.000054499999999999997 0.44 AML other m 2023-09-22T11:57:07.61
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