Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 07-07-2021 and time 04:49:17 (Italy) in region 3 km NW Sora (FR)

A magnitude ML 0.5 earthquake occured in region: 3 km NW Sora (FR), on

  • 07-07-2021 02:49:17 (UTC)
  • 07-07-2021 04:49:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7460, 13.5980 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 5 1555 27699
Broccostella FR 6 2741 30440
Campoli Appennino FR 7 1725 32165
Balsorano AQ 7 3569 35734
Isola del Liri FR 8 11715 47449
Castelliri FR 8 3454 50903
Posta Fibreno FR 10 1139 52042
Fontechiari FR 11 1303 53345
Arpino FR 11 7262 60607
San Vincenzo Valle Roveto AQ 12 2347 62954
Vicalvi FR 12 783 63737
Monte San Giovanni Campano FR 14 12929 76666
Alvito FR 14 2713 79379
Villavallelonga AQ 14 919 80298
Fontana Liri FR 15 2953 83251
Boville Ernica FR 15 8737 91988
Collelongo AQ 16 1233 93221
Casalvieri FR 16 2698 95919
Veroli FR 16 20560 116479
Santopadre FR 16 1357 117836
Pescasseroli AQ 17 2203 120039
Casalattico FR 17 574 120613
Morino AQ 18 1448 122061
Arce FR 18 5756 127817
Rocca d'Arce FR 18 959 128776
Strangolagalli FR 18 2491 131267
San Donato Val di Comino FR 19 2107 133374
Civita d'Antino AQ 19 979 134353
Collepardo FR 19 968 135321
Gallinaro FR 19 1269 136590
Opi AQ 20 420 137010

Municipalities with at least 50000 inhabitants

An earthquake occurred to
65 Km E of Latina (125985 inhabitants)
68 Km E of Velletri (53303 inhabitants)
69 Km S of L'Aquila (69753 inhabitants)
70 Km E of Tivoli (56533 inhabitants)
77 Km E of Guidonia Montecelio (88673 inhabitants)
81 Km E of Aprilia (73446 inhabitants)
82 Km SW of Chieti (51815 inhabitants)
87 Km E of Anzio (54211 inhabitants)
91 Km E of Pomezia (62966 inhabitants)
94 Km E of Roma (2864731 inhabitants)
95 Km SW of Pescara (121014 inhabitants)
97 Km NW of Caserta (76326 inhabitants)
97 Km SW of Montesilvano (53738 inhabitants)
100 Km NW of Aversa (53047 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 0.5 2021-07-07
02:49:17		 41.7463 13.5977 10 2021-07-07
03:01:44		 Sala Sismica INGV-Roma 92332471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-07 02:49:17 ± 0.23
Latitude 41.7463 ± 0.0027
Longitude 13.5977 ± 0.0084
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92332471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 636
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.12501
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 92332471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-07 03:01:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2021-07-07T02:49:24.16 3.0 positive manual P 0 0
IV.VVLD.HHZ. 2021-07-07T02:49:23.15 0.3 undecidable manual S 9 13.875 125 -0.02 75
IV.POFI.HHZ. 2021-07-07T02:49:22.23 0.3 undecidable manual S 109 9.9789 135 0.09 75
IV.LRP.EHZ. 2021-07-07T02:49:22.35 0.1 undecidable manual S 185 11.0778 132 -0.06 100
IV.LRP.EHZ. 2021-07-07T02:49:20.33 0.1 undecidable manual P 185 11.0778 132 0.1 99
IV.VVLD.HHZ. 2021-07-07T02:49:20.72 0.6 undecidable manual P 9 13.875 125 0.05 50
IV.POFI.HHZ. 2021-07-07T02:49:19.96 0.1 undecidable manual P 109 9.9789 135 -0.12 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:0.2 0.00001805 0.28 AML other m 2021-07-07T02:49:22.71
IV.POFI.HHN. ML:0.1 0.000016550000000000002 0.52 AML other m 2021-07-07T02:49:22.70
IV.LRP.EHN. ML:0.5 0.0000367 1.08 AML other m 2021-07-07T02:49:23.94
IV.VVLD.HHN. ML:0.7 0.00004845 0.28 AML other m 2021-07-07T02:49:23.48
IV.VVLD.HHE. ML:0.5 0.00003734999999999999 0.42 AML other m 2021-07-07T02:49:23.33
IV.LRP.EHE. ML:0.8 0.00007494999999999999 1.3 AML other m 2021-07-07T02:49:23.00
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