Earthquake with magnitude of ML 0.3 on date 06-09-2021 and time 23:20:27 (Italy) in region 4 km N Pescasseroli (AQ)

A magnitude ML 0.3 earthquake occured in region: 4 km N Pescasseroli (AQ), on

  • 06-09-2021 21:20:27 (UTC)
  • 06-09-2021 23:20:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.845, 13.799 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
Pescasseroli AQ 4 2203 2203
Opi AQ 8 420 2623
Bisegna AQ 9 223 2846
Scanno AQ 10 1847 4693
Villalago AQ 11 568 5261
Villetta Barrea AQ 13 653 5914
Lecce nei Marsi AQ 14 1702 7616
Villavallelonga AQ 15 919 8535
Civitella Alfedena AQ 15 296 8831
Gioia dei Marsi AQ 15 1989 10820
San Donato Val di Comino FR 15 2107 12927
Campoli Appennino FR 15 1725 14652
Pescosolido FR 16 1555 16207
Anversa degli Abruzzi AQ 17 341 16548
Ortucchio AQ 18 1860 18408
Alvito FR 18 2713 21121
Rocca Pia AQ 18 178 21299
Ortona dei Marsi AQ 18 542 21841
Collelongo AQ 18 1233 23074
Barrea AQ 19 726 23800
Posta Fibreno FR 19 1139 24939
Pettorano sul Gizio AQ 20 1376 26315
Settefrati FR 20 728 27043
Balsorano AQ 20 3569 30612

Municipalities with at least 50000 inhabitants

An earthquake occurred to
64 Km SW of Chieti (51815 inhabitants)
65 Km SE of L'Aquila (69753 inhabitants)
77 Km SW of Pescara (121014 inhabitants)
80 Km SW of Montesilvano (53738 inhabitants)
84 Km E of Tivoli (56533 inhabitants)
85 Km NE of Latina (125985 inhabitants)
86 Km E of Velletri (53303 inhabitants)
90 Km E of Guidonia Montecelio (88673 inhabitants)
91 Km S of Teramo (54892 inhabitants)
96 Km NW of Caserta (76326 inhabitants)
99 Km E of Aprilia (73446 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.3 2021-09-06
21:20:27
41.8447 13.7987 6 2021-09-06
21:37:57
Sala Sismica INGV-Roma 95124061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-06 21:20:27 ± 0.12
Latitude 41.8447 ± 0.0018
Longitude 13.7987 ± 0.0036
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95124061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 159
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 123
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 182
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.06
Epicentral distance of station closest to the epicenter (degree) 0.1331
Epicentral distance of station farthest from the epicenter (degree) 0.18436
Number of stations at which the event was observed 3
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 95124061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-06 21:37:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.INTR.HHZ. 2021-09-06T21:20:34.92 0.6 undecidable manual S 25 0.1844 106 -0.03 50
IV.VVLD.HHZ. 2021-09-06T21:20:33.05 0.6 undecidable manual S 281 0.1331 112 -0.03 50
IV.POFI.HHZ. 2021-09-06T21:20:33.49 0.6 undecidable manual S 207 0.143 110 0.07 50
IV.INTR.HHZ. 2021-09-06T21:20:31.87 0.1 undecidable manual P 25 0.1844 106 0.04 100
IV.VVLD.HHZ. 2021-09-06T21:20:30.78 0.3 negative manual P 281 0.1331 112 0.04 75
IV.POFI.HHZ. 2021-09-06T21:20:30.89 0.1 undecidable manual P 207 0.143 110 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.POFI.HHE. ML:0.4 2.37E-5 0.46 AML other m 2021-09-06T21:20:35.52
IV.ECTS.HHE. ML:3.2 6.855E-5 0.74 AML other m 2021-09-06T21:21:22.43
IV.POFI.HHN. ML:0.2 1.41E-5 0.68 AML other m 2021-09-06T21:21:29.76
IV.ECTS.HHN. ML:3.2 6.315E-5 0.76 AML other m 2021-09-06T21:21:30.68
IV.SEI.HHN. ML:3.2 0.000171 0.68 AML other m 2021-09-06T21:21:40.20
IV.SEI.HHE. ML:2.9 9.075E-5 0.64 AML other m 2021-09-06T21:21:40.65
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