Earthquake with magnitude of ML 1.1 on date 27-09-2022 and time 09:22:15 (Italy) in region 4 km SE Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km SE Norcia (PG), on

  • 27-09-2022 07:22:15 (UTC)
  • 27-09-2022 09:22:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7760, 13.1300 at 12 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
Norcia PG 4 4957 4957
Cascia PG 11 3217 8174
Accumoli RI 13 667 8841
Castelsantangelo sul Nera MC 13 281 9122
Preci PG 14 724 9846
Arquata del Tronto AP 14 1178 11024
Poggiodomo PG 17 117 11141
Visso MC 18 1107 12248
Cittareale RI 18 482 12730
Cerreto di Spoleto PG 18 1075 13805
Montegallo AP 18 523 14328
Ussita MC 19 444 14772
Monteleone di Spoleto PG 20 599 15371

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km SE of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
95 Km W of Pescara (121014 inhabitants)
97 Km W of Chieti (51815 inhabitants)
99 Km SW of Ancona (100861 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 1.1 2022-09-27
07:22:15
42.776 13.1303 12 2022-09-27
07:43:44
Sala Sismica INGV-Roma 110207531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-27 07:22:15 ± 0.08
Latitude 42.7760 ± 0.0045
Longitude 13.1303 ± 0.0074
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 110207531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 573
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05846
Epicentral distance of station farthest from the epicenter (degree) 0.28239
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 20
Type of magnitude ML
Reference to an origin 110207531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-09-27 07:43:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2022-09-27T07:22:26.35 0.6 undecidable manual S 324 0.2824 92 -0.21 47
IV.MMO1.EHZ. 2022-09-27T07:22:23.48 0.6 undecidable manual S 49 0.1898 95 -0.34 46
IV.LNSS.HHZ. 2022-09-27T07:22:23.68 0.6 undecidable manual S 201 0.1853 95 -0.01 50
IV.GAVE.HNZ. 2022-09-27T07:22:23.87 0.6 undecidable manual S 244 0.1925 95 -0.04 50
IV.CESI.HHZ. 2022-09-27T07:22:22.04 0.6 negative manual P 324 0.2824 92 0.05 49
IV.MC2.EHZ. 2022-09-27T07:22:22.49 0.6 undecidable manual S 18 0.1421 102 0.06 50
IV.MMO1.EHZ. 2022-09-27T07:22:20.92 0.6 undecidable manual P 49 0.1898 95 0.51 45
IV.LNSS.HHZ. 2022-09-27T07:22:20.28 0.3 positive manual P 201 0.1853 95 -0.05 74
IV.NRCA.HHZ. 2022-09-27T07:22:20.24 0.6 undecidable manual S 348 0.0585 142 -0.1 50
IV.SMA1.EHZ. 2022-09-27T07:22:20.44 0.6 negative manual P 134 0.2095 94 -0.3 47
IV.GAVE.HNZ. 2022-09-27T07:22:20.55 0.3 undecidable manual P 244 0.1925 95 0.1 73
IV.MC2.EHZ. 2022-09-27T07:22:19.84 1.0 undecidable manual P 18 0.1421 102 0.24 24
IV.NRCA.HHZ. 2022-09-27T07:22:18.48 0.1 negative manual P 348 0.0585 142 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.00041799999999999997 0.08 AML other m 2022-09-27T07:22:20.27
IV.NRCA.HHE. ML:1.4 0.00032647285 0.08 AML other m 2022-09-27T07:22:20.39
IV.NRCA.HNE. ML:1.4 0.0003297712 0.08 AML other m 2022-09-27T07:22:20.31
IV.NRCA.HNN. ML:1.4 0.00036030089999999996 0.08 AML other m 2022-09-27T07:22:20.26
IV.MC2.EHE. ML:0.8 0.00006034302999999999 0.2624 AML other m 2022-09-27T07:22:24.95
IV.MC2.EHN. ML:1.0 0.00007833605000000001 0.2592 AML other m 2022-09-27T07:22:23.77
IV.LNSS.HNE. ML:1.3 0.000134814 0.8 AML other m 2022-09-27T07:22:22.53
IV.LNSS.HNN. ML:1.2 0.000107937755 0.7008 AML other m 2022-09-27T07:22:27.40
IV.LNSS.HHE. ML:0.9 0.0000517123 0.1408 AML other m 2022-09-27T07:22:24.50
IV.LNSS.HHN. ML:0.9 0.000055569104999999997 0.1408 AML other m 2022-09-27T07:22:24.51
IV.SMA1.EHE. ML:0.9 0.000048171695 0.4192 AML other m 2022-09-27T07:22:29.04
IV.SMA1.EHN. ML:0.9 0.000047334349999999995 0.2816 AML other m 2022-09-27T07:22:25.37
IV.MMO1.HNE. ML:2.9 0.005098268 0.6208 AML other m 2022-09-27T07:22:24.53
IV.MMO1.HNN. ML:2.8 0.004265947 0.592 AML other m 2022-09-27T07:22:28.27
IV.MMO1.EHE. ML:0.6 0.000025722889999999997 0.08 AML other m 2022-09-27T07:22:24.46
IV.MMO1.EHN. ML:1.0 0.000060303645000000006 0.2592 AML other m 2022-09-27T07:22:23.69
IV.CESI.HHE. ML:0.5 0.000016040095000000002 0.6208 AML other m 2022-09-27T07:22:33.87
IV.CESI.HHN. ML:0.6 0.000021487180000000002 0.1408 AML other m 2022-09-27T07:22:27.64
IV.CESI.HNE. ML:1.5 0.00013260595 0.72 AML other m 2022-09-27T07:22:25.88
IV.CESI.HNN. ML:1.3 0.00009740785 0.7712 AML other m 2022-09-27T07:22:34.98
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