Earthquake with magnitude of ML 0.9 on date 07-07-2021 and time 06:46:58 (Italy) in region 3 km N Sora (FR)

A magnitude ML 0.9 earthquake occured in region: 3 km N Sora (FR), on

  • 07-07-2021 04:46:58 (UTC)
  • 07-07-2021 06:46:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7490, 13.6180 at 14 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
Sora FR 3 26144 26144
Pescosolido FR 3 1555 27699
Broccostella FR 5 2741 30440
Campoli Appennino FR 5 1725 32165
Balsorano AQ 8 3569 35734
Isola del Liri FR 9 11715 47449
Posta Fibreno FR 9 1139 48588
Castelliri FR 9 3454 52042
Fontechiari FR 10 1303 53345
Vicalvi FR 11 783 54128
Arpino FR 11 7262 61390
San Vincenzo Valle Roveto AQ 12 2347 63737
Alvito FR 12 2713 66450
Villavallelonga AQ 13 919 67369
Monte San Giovanni Campano FR 15 12929 80298
Casalvieri FR 15 2698 82996
Collelongo AQ 16 1233 84229
Pescasseroli AQ 16 2203 86432
Santopadre FR 16 1357 87789
Fontana Liri FR 16 2953 90742
Casalattico FR 17 574 91316
San Donato Val di Comino FR 17 2107 93423
Boville Ernica FR 17 8737 102160
Veroli FR 18 20560 122720
Opi AQ 18 420 123140
Gallinaro FR 18 1269 124409
Rocca d'Arce FR 18 959 125368
Arce FR 18 5756 131124
Morino AQ 19 1448 132572
Strangolagalli FR 19 2491 135063
Civita d'Antino AQ 20 979 136042

Municipalities with at least 50000 inhabitants

An earthquake occurred to
67 Km E of Latina (125985 inhabitants)
70 Km S of L'Aquila (69753 inhabitants)
70 Km E of Velletri (53303 inhabitants)
72 Km E of Tivoli (56533 inhabitants)
79 Km E of Guidonia Montecelio (88673 inhabitants)
81 Km SW of Chieti (51815 inhabitants)
82 Km E of Aprilia (73446 inhabitants)
89 Km E of Anzio (54211 inhabitants)
93 Km E of Pomezia (62966 inhabitants)
94 Km SW of Pescara (121014 inhabitants)
95 Km E of Roma (2864731 inhabitants)
96 Km NW of Caserta (76326 inhabitants)
96 Km SW of Montesilvano (53738 inhabitants)
99 Km NW of Aversa (53047 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 0.9 2021-07-07
04:46:58
41.749 13.6183 14 2021-07-07
04:59:02
Sala Sismica INGV-Roma 92336121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-07 04:46:58 ± 0.08
Latitude 41.7490 ± 0.0036
Longitude 13.6183 ± 0.0036
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92336121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 44
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 192
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51441
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 92336121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-07 04:59:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TDS.HHZ. 2021-07-07T04:48:33.79 3.0 undecidable manual Sg 13.06 0
IV.HAVL.HHZ. 2021-07-07T04:48:19.18 3.0 undecidable manual Pg 15.6 0
IV.VENL.EHZ. 2021-07-07T04:48:18.01 3.0 undecidable manual Sn -6.77 0
GU.MGRO.HHZ. 2021-07-07T04:48:02.91 3.0 undecidable manual Pg 11.72 0
ST.DOSS.HHZ. 2021-07-07T04:47:54.40 3.0 positive manual Pn 3.56 0
IV.CSLB.HHZ. 2021-07-07T04:47:49.01 3.0 positive manual Pn 1.71 0
IV.FIR.HHZ. 2021-07-07T04:47:48.23 3.0 undecidable manual Sn -3.06 0
IV.SCIAR.HHZ. 2021-07-07T04:47:47.12 3.0 undecidable manual Pn 0.61 0
IV.CAVE.HHZ. 2021-07-07T04:47:38.59 3.0 negative manual Pn 0.31 0
IV.PZUN.HHZ. 2021-07-07T04:47:35.74 3.0 undecidable manual Pg 7.61 0
IV.SCHR.EHZ. 2021-07-07T04:47:31.81 3.0 positive manual Pn -1.85 0
IV.BRSN.EHZ. 2021-07-07T04:47:29.42 3.0 negative manual Pn 1.92 0
IV.SLCN.HHZ. 2021-07-07T04:47:28.20 3.0 undecidable manual Pn -0.13 0
IX.SSB3.HHZ.02 2021-07-07T04:47:26.15 3.0 negative manual Pg 5.96 0
IV.RUFI.EHZ. 2021-07-07T04:47:24.01 3.0 negative manual Pn 0.65 0
IV.MTMR.EHZ. 2021-07-07T04:47:20.54 3.0 undecidable manual Pn 1.58 0
IV.MMUR.HNZ. 2021-07-07T04:47:19.10 3.0 positive manual Pg 3.63 0
IV.CERT.HNE. 2021-07-07T04:47:15.83 0.1 undecidable manual S 293 0.5144 94 0 92
IV.CERA.HHZ. 2021-07-07T04:47:10.47 0.6 undecidable manual S 117 0.3345 97 -0.06 47
IV.GIUL.HHZ. 2021-07-07T04:47:10.70 0.1 undecidable manual S 235 0.3318 97 0.25 92
IV.PTQR.HHE. 2021-07-07T04:47:10.62 0.3 undecidable manual S 329 0.3175 98 0.6 63
IV.INTR.HHZ. 2021-07-07T04:47:10.54 0.1 undecidable manual S 39 0.3381 97 -0.09 94
IV.CERT.HNE. 2021-07-07T04:47:07.96 0.1 undecidable manual P 293 0.5144 94 -0.38 85
IV.GUAR.HHZ. 2021-07-07T04:47:07.47 0.1 undecidable manual S 281 0.2329 103 -0.08 96
IV.INTR.HHZ. 2021-07-07T04:47:05.21 0.3 positive manual P 39 0.3381 97 -0.13 70
IV.CERA.HHZ. 2021-07-07T04:47:05.64 0.3 undecidable manual P 117 0.3345 97 0.36 68
IV.GIUL.HHZ. 2021-07-07T04:47:05.16 0.1 undecidable manual P 235 0.3318 97 -0.08 94
IT.OPI.HGN. 2021-07-07T04:47:05.54 0.1 undecidable manual S 80 0.1601 114 0.03 100
IV.LRP.EHZ. 2021-07-07T04:47:04.00 0.1 undecidable manual S 193 0.1043 130 -0.11 98
IV.VVLD.HHZ. 2021-07-07T04:47:04.46 0.1 undecidable manual S 2 0.1205 125 -0.03 100
IV.PTQR.HHE. 2021-07-07T04:47:04.92 0.3 undecidable manual P 329 0.3175 98 -0.07 71
IV.POFI.HHZ. 2021-07-07T04:47:03.48 0.1 undecidable manual S 114 0.0764 141 -0.05 100
IV.GUAR.HHZ. 2021-07-07T04:47:03.51 0.1 undecidable manual P 281 0.2329 103 -0.05 97
IT.OPI.HGN. 2021-07-07T04:47:02.38 0.1 undecidable manual P 80 0.1601 114 0 99
IV.VVLD.HHZ. 2021-07-07T04:47:01.92 0.1 positive manual P 2 0.1205 125 0.13 98
IV.VIVA.HHZ. 2021-07-07T04:47:01.11 3.0 undecidable manual P 0
IV.POFI.HHZ. 2021-07-07T04:47:01.32 0.3 undecidable manual P 114 0.0764 141 0.08 75
IV.LRP.EHZ. 2021-07-07T04:47:01.57 1.0 undecidable manual P 193 0.1043 130 -0.01 25
IV.VIVA.HHZ. 2021-07-07T04:47:01.83 3.0 undecidable manual S 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:0.8 0.000065914615 0.0576 AML other m 2021-07-07T04:47:03.94
IV.POFI.HHN. ML:0.8 0.00006341395499999999 0.24 AML other m 2021-07-07T04:47:03.96
IV.LRP.EHN. ML:1.1 0.00011303751500000001 0.1408 AML other m 2021-07-07T04:47:04.20
IV.VVLD.HHN. ML:1.4 0.00021450000000000004 0.28 AML other m 2021-07-07T04:47:04.75
IV.VVLD.HHE. ML:1.1 0.000102197325 0.1184 AML other m 2021-07-07T04:47:04.60
IV.LRP.EHE. ML:1.3 0.000179870065 0.08 AML other m 2021-07-07T04:47:04.92
IV.GIUL.HHN. ML:0.7 0.00002210964 0.1408 AML other m 2021-07-07T04:47:10.80
IV.GIUL.HHE. ML:0.6 0.000016841675 0.1408 AML other m 2021-07-07T04:47:11.88
IV.INTR.HHE. ML:0.8 0.00002630027 0.3008 AML other m 2021-07-07T04:47:12.51
IV.INTR.HHN. ML:0.8 0.000026092525 0.2016 AML other m 2021-07-07T04:47:13.66
IV.BRSN.HNE. ML:3.5 0.00035820430000000004 0.0512 AML other m 2021-07-07T04:47:35.95
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