Earthquake with magnitude of ML 1.6 on date 27-09-2022 and time 04:48:51 (UTC) in region 7 km S Castel Ritaldi (PG)

A magnitude ML 1.6 earthquake occured in region: 7 km S Castel Ritaldi (PG), on

  • 27-09-2022 04:48:51 (UTC)
  • 27-09-2022 06:48:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7610, 12.6580 at 6 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
Castel Ritaldi PG 7 3278 3278
Spoleto PG 7 38218 41496
Giano dell'Umbria PG 11 3846 45342
Massa Martana PG 11 3770 49112
Acquasparta TR 12 4778 53890
Campello sul Clitunno PG 12 2442 56332
Montefalco PG 15 5679 62011
Sant'Anatolia di Narco PG 15 564 62575
Trevi PG 15 8469 71044
Scheggino PG 15 461 71505
Vallo di Nera PG 17 364 71869
Montecastrilli TR 19 5022 76891
Gualdo Cattaneo PG 19 6155 83046
San Gemini TR 19 5018 88064
Ferentillo TR 19 1913 89977
Bevagna PG 20 5081 95058

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km S of Foligno (57155 inhabitants)
22 Km N of Terni (111501 inhabitants)
44 Km SE of Perugia (166134 inhabitants)
59 Km NE of Viterbo (67173 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
85 Km N of Guidonia Montecelio (88673 inhabitants)
86 Km W of Teramo (54892 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
98 Km N of Roma (2864731 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.6 2022-09-27
04:48:51
42.7608 12.6578 6 2022-09-27
05:00:58
Sala Sismica INGV-Roma 110202281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-27 04:48:51 ± 0.11
Latitude 42.7608 ± 0.0045
Longitude 12.6578 ± 0.0086
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 110202281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 557
Semi-minor axis of confidence ellipse (meter) 495
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76532
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 110202281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-09-27 05:00:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CELB.HHZ. 2022-09-27T04:49:25.20 3.0 positive manual Pg 1.77 0
IV.ARVD.HHZ. 2022-09-27T04:49:18.47 0.3 undecidable manual S 16 0.7653 50 0.92 51
IV.CING.HHZ. 2022-09-27T04:49:17.11 0.3 undecidable manual S 32 0.7293 50 0.63 58
IV.ATPI.EHZ. 2022-09-27T04:49:17.22 1.0 undecidable manual S 345 0.7141 50 1.18 15
IV.SSFR.HHZ. 2022-09-27T04:49:15.87 0.3 undecidable manual S 8 0.6808 50 0.81 55
IV.FIAM.HHZ. 2022-09-27T04:49:12.67 0.6 undecidable manual S 145 0.5971 50 0.08 46
IV.GUMA.HHZ. 2022-09-27T04:49:12.44 0.3 undecidable manual S 58 0.5801 50 0.36 65
IV.SMA1.EHZ. 2022-09-27T04:49:10.41 0.3 undecidable manual S 104 0.5144 50 0.29 67
IV.CSP1.EHZ. 2022-09-27T04:49:10.43 0.6 undecidable manual S 50 0.5189 50 0.16 46
IV.MMO1.EHZ. 2022-09-27T04:49:09.89 0.6 undecidable manual S 74 0.5099 50 -0.09 47
IV.RM33.EHZ. 2022-09-27T04:49:08.73 0.6 undecidable manual S 121 0.4802 50 -0.39 44
IV.MML1.EHZ. 2022-09-27T04:49:07.06 0.6 undecidable manual S 33 0.4209 50 -0.28 46
IV.ARVD.HHZ. 2022-09-27T04:49:07.15 0.1 undecidable manual P 16 0.7653 50 0.66 76
IV.MC2.EHZ. 2022-09-27T04:49:07.30 0.6 undecidable manual S 69 0.4173 50 0.05 48
IV.ATCC.EHZ. 2022-09-27T04:49:06.76 0.6 undecidable manual S 358 0.4245 50 -0.69 40
IV.MURB.HNZ. 2022-09-27T04:49:06.45 3.0 undecidable manual S -5.09 0
IV.FDMO.HHZ. 2022-09-27T04:49:06.88 0.6 undecidable manual S 49 0.4182 50 -0.39 45
IV.CING.HHZ. 2022-09-27T04:49:05.49 0.1 undecidable manual P 32 0.7293 50 -0.38 84
IV.NRCA.HHZ. 2022-09-27T04:49:04.49 0.6 undecidable manual S 78 0.3426 99 -0.25 47
IV.ATPI.EHZ. 2022-09-27T04:49:04.65 0.1 undecidable manual P 345 0.7141 50 -0.96 68
IV.SSFR.HHZ. 2022-09-27T04:49:04.96 0.1 undecidable manual P 8 0.6808 50 -0.09 90
IV.GUMA.HHZ. 2022-09-27T04:49:03.72 1.0 negative manual P 58 0.5801 50 0.4 22
IV.LNSS.HHZ. 2022-09-27T04:49:03.49 0.6 undecidable manual S 119 0.3220 100 -0.48 45
IV.FIAM.HHZ. 2022-09-27T04:49:03.56 0.6 positive manual P 145 0.5971 50 -0.06 46
IV.CESI.HHZ. 2022-09-27T04:49:03.36 0.6 undecidable manual S 36 0.3040 101 0.1 49
IV.SMA1.EHZ. 2022-09-27T04:49:02.07 1.0 positive manual P 104 0.5144 50 -0.12 23
IV.ASSB.HHZ. 2022-09-27T04:49:02.53 0.6 undecidable manual S 0 0.2815 101 0.1 49
IV.CSP1.EHZ. 2022-09-27T04:49:01.76 1.0 negative manual P 50 0.5189 50 -0.52 21
IV.MMO1.EHZ. 2022-09-27T04:49:01.83 0.3 undecidable manual P 74 0.5099 50 -0.28 67
IV.RM33.EHZ. 2022-09-27T04:49:01.43 1.0 positive manual P 121 0.4802 50 -0.19 23
IV.FDMO.HHZ. 2022-09-27T04:49:00.21 0.1 undecidable manual P 49 0.4182 50 -0.34 90
IV.MC2.EHZ. 2022-09-27T04:49:00.40 1.0 negative manual P 69 0.4173 50 -0.13 24
IV.ATCC.EHZ. 2022-09-27T04:49:00.33 0.1 undecidable manual P 358 0.4245 50 -0.32 90
IV.MML1.EHZ. 2022-09-27T04:49:00.22 0.6 positive manual P 33 0.4209 50 -0.37 45
IV.ARRO.EHZ. 2022-09-27T04:48:59.69 0.6 undecidable manual S 156 0.1979 106 0.39 47
IV.GAVE.EHZ. 2022-09-27T04:48:59.66 0.6 undecidable manual S 111 0.1871 107 0.78 41
IV.CESI.HHZ. 2022-09-27T04:48:58.22 0.3 positive manual P 36 0.3040 101 -0.01 74
IV.NRCA.HHZ. 2022-09-27T04:48:58.84 0.3 positive manual P 78 0.3426 99 -0.25 70
IV.CESX.HHZ. 2022-09-27T04:48:58.14 0.6 undecidable manual S 199 0.1610 109 0.2 49
IV.LNSS.HHZ. 2022-09-27T04:48:58.36 0.1 undecidable manual P 119 0.3220 100 -0.28 93
IV.ASSB.HHZ. 2022-09-27T04:48:57.94 0.6 negative manual P 0 0.2815 101 0.19 48
IV.ARRO.EHZ. 2022-09-27T04:48:56.17 0.1 undecidable manual P 156 0.1979 106 0.22 97
IV.CESX.HHZ. 2022-09-27T04:48:55.36 0.3 positive manual P 199 0.1610 109 0.2 73
IV.GAVE.EHZ. 2022-09-27T04:48:55.77 0.1 undecidable manual P 111 0.1871 107 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.9 0.0007675 0.24 AML other m 2022-09-27T04:48:59.31
IV.CESX.HHE. ML:1.8 0.000607 1.02 AML other m 2022-09-27T04:48:59.45
IV.ARRO.EHN. ML:1.3 0.00013585 0.46 AML other m 2022-09-27T04:49:01.15
IV.GAVE.EHE. ML:1.5 0.00021999999999999998 0.48 AML other m 2022-09-27T04:49:02.81
IV.GAVE.EHN. ML:1.5 0.0002345 0.92 AML other m 2022-09-27T04:49:03.51
IV.ASSB.HHN. ML:1.5 0.000165 1 AML other m 2022-09-27T04:49:03.03
IV.ARRO.EHE. ML:1.3 0.00012895000000000002 1.2 AML other m 2022-09-27T04:49:03.69
IV.ASSB.HHE. ML:1.4 0.000121 0.2 AML other m 2022-09-27T04:49:04.38
IV.CESI.HHE. ML:1.2 0.00007425 1.28 AML other m 2022-09-27T04:49:05.95
IV.LNSS.HHN. ML:1.6 0.0001535 0.86 AML other m 2022-09-27T04:49:05.46
IV.CESI.HHN. ML:1.5 0.000149 0.26 AML other m 2022-09-27T04:49:05.35
IV.NRCA.HHN. ML:1.7 0.0001785 0.66 AML other m 2022-09-27T04:49:05.16
IV.NRCA.HHE. ML:1.6 0.000147 0.52 AML other m 2022-09-27T04:49:05.98
IV.LNSS.HHE. ML:1.6 0.0001565 1.06 AML other m 2022-09-27T04:49:05.35
IV.FDMO.HHE. ML:1.5 0.00009955 0.42 AML other m 2022-09-27T04:49:07.70
IV.FDMO.HHN. ML:1.4 0.00007580000000000001 0.4 AML other m 2022-09-27T04:49:08.26
IV.MML1.EHN. ML:1.4 0.0000694 0.58 AML other m 2022-09-27T04:49:08.28
IV.ATCC.HNE. ML:1.8 0.00017749999999999998 0.64 AML other m 2022-09-27T04:49:09.42
IV.MMO1.EHE. ML:1.6 0.0000809 1.08 AML other m 2022-09-27T04:49:11.61
IV.MML1.EHE. ML:1.4 0.00006819999999999999 0.46 AML other m 2022-09-27T04:49:11.13
IV.MMO1.EHN. ML:1.6 0.00008925 0.42 AML other m 2022-09-27T04:49:11.42
IV.SMA1.EHE. ML:1.5 0.00007230000000000001 0.84 AML other m 2022-09-27T04:49:11.73
IV.SMA1.EHN. ML:1.6 0.00008225000000000001 1.18 AML other m 2022-09-27T04:49:12.71
IV.ATCC.HNN. ML:1.8 0.00016299999999999998 1.16 AML other m 2022-09-27T04:49:12.82
IV.GUMA.HHE. ML:1.8 0.00011899999999999999 1.04 AML other m 2022-09-27T04:49:14.73
IV.GUMA.HHN. ML:1.7 0.00009135 0.3 AML other m 2022-09-27T04:49:16.52
IV.CELB.HHN. ML:3.1 0.00039949999999999995 0.4 AML other m 2022-09-27T04:49:26.62
IV.CELB.HHE. ML:3.0 0.000323 0.06 AML other m 2022-09-27T04:49:26.63
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download